Synthex Forge — x402 Paid Agent Services

Ebook Download VALUE: The full 121-page book 'x402 — The Agent Economy' — the definitive account of building machine-native services agents pay for, in one file. PRICE: $29.00 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount and put it in the `X-PAYMENT` header, then retry

The BioTrust service catalogue an agent routes from (PAID $0.02) VALUE: BioTrust Service 07 — the machine-readable index of this namespace. PRICE: $0.02 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount and put it in the `X-PAYMENT` header, then retry the same call. An unpa

Signed reference rates, always as-of stamped. FX leg is the ECB euro reference rates (official, daily); crypto leg is the Binance public spot bookTicker. On a weekend or holiday the LAST BUSINESS DAY is returned with is_stale=true and the real staleness in seconds — a stale rate is never presented as live. VALUE: What is this amount worth right now? PRICE: $0.01 USDC per call. HOW TO PAY: USDC

Signed Research VALUE: Paid route: $0.50 USDC on eip155:8453 (USD). An unauthenticated request is answered HTTP 402 with a machine-readable price challenge in the `Payment-Required` response header and a JSON body carrying `error`, `error_reason`, `error_message` and `x402Version`. Error codes and their remedies are published at https://x402.synthexforge.com/v1/errors. PRICE: $0.50 USDC per call

Multi-channel social-signal search (PAID $0.02) VALUE: Paid route: $0.02 USDC on eip155:8453 (USD). An unauthenticated request is answered HTTP 402 with a machine-readable price challenge in the `Payment-Required` response header and a JSON body carrying `error`, `error_reason`, `error_message` and `x402Version`. Error codes and their remedies are published at https://x402.synthexforge.com/v1/err

Turn a deal between two agents into signed, machine-checkable release terms (PAID $0.50) VALUE: Produce the release-terms document for a deal. PRICE: $0.50 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount and put it in the `X-PAYMENT` header, then retry the same call. An u

What does agent A owe agent B, and is the evidence sufficient to settle it? (PAID $0.25) VALUE: Adjudicate what one agent owes another. PRICE: $0.25 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount and put it in the `X-PAYMENT` header, then retry the same call. An unpaid c

Compute a signed agent-reputation composite from an agent id and its event list. VALUE: Reputation scored from dated, signed behaviour events rather than self-reported claims — so you can price trust before you trade. PRICE: $0.25 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact

Compute a signed trusted-route ranking for a counterparty. VALUE: The specific routes an agent is cleared to call, with the evidence behind each clearance — so you can enforce a least-privilege allowlist instead of trusting a name. PRICE: $0.30 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization

Hand a task from one agent to another without losing the thread (PAID $0.10) VALUE: Assess a handoff of task state between two agents. PRICE: $0.10 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount and put it in the `X-PAYMENT` header, then retry the same call. An unpaid ca

Attested Agent Execution — bounded agent run (PAID $1.00) VALUE: One audited agent execution with a cost ledger and a signed result, so the work is reproducible and the spend is attributable. PRICE: $1.00 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount and put it in the `

Signed self-contained audit evidence package with a Merkle root (PAID $4.00) VALUE: A single signed package binding artifacts, assertions and attestations for a period — what an auditor asks for, without three weeks of chasing. PRICE: $4.00 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for

MiFID-style best-execution attestation. Returns within_tolerance | outside_tolerance | insufficient_evidence, with the implementation shortfall, the slippage, the gap to every benchmark supplied, the timing risk and a quality grade. Every bps figure is reproducible from the numbers shown. A missing arrival price returns insufficient_evidence — implementation shortfall is undefined without a decisi

Signed BioAudit receipt for an administrative biosecurity check (PAID $0.25) VALUE: BioTrust Service 06 — mint ONE signed, offline-verifiable receipt. PRICE: $0.25 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount and put it in the `X-PAYMENT` header, then retry the same ca

Verify a third party's BioAudit receipt (PAID $0.02) VALUE: BioTrust Service 06b — verify a receipt a THIRD PARTY issued. PRICE: $0.02 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount and put it in the `X-PAYMENT` header, then retry the same call. An unpaid call returns a

Cited retrieval from the official biosafety-guidance corpus (PAID $0.50) VALUE: BioTrust Service 02 — answer ONE compliance question, with citations. PRICE: $0.50 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount and put it in the `X-PAYMENT` header, then retry the same cal

Reconcile declared custody records across seven checks and produce an accountability report (PAID $0.50) VALUE: BioTrust Service 09 — LabAsset Control. PRICE: $0.50 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount and put it in the `X-PAYMENT` header, then retry the same c

Eight documented anomaly-detection rules over the caller's own security events, with preserved evidence (PAID $0.50) VALUE: BioTrust Service 08 — the LabCyber Sentinel. PRICE: $0.50 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount and put it in the `X-PAYMENT` header, then

Normalised, deduplicated, revision-tracked public-health outbreak events from two verified publisher feeds (PAID $0.05) VALUE: BioTrust Service 05 — the OutbreakSignal. PRICE: $0.05 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount and put it in the `X-PAYMENT` header, then

Verify a dataset manifest's origin, integrity and version history (PAID $0.05) VALUE: BioTrust Service 12 — verify a dataset manifest. PRICE: $0.05 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount and put it in the `X-PAYMENT` header, then retry the same call. An unpaid ca

Organise a dual-use research review: evidence, reviewers, justified decisions, escalation (PAID $1.50) VALUE: BioTrust Service 11 — the Dual-Use Research Review Assistant. PRICE: $1.50 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount and put it in the `X-PAYMENT` header, t

A structured review record over a declared institutional setup: the controls the published guidance associates with the declaration, the ones not declared, and the ones a human must verify (PAID $2.00) VALUE: BioTrust Service 01 — BioRisk. PRICE: $2.00 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthor

Register and check provider claims: signed statements, methodology, evidence, and an explicit self-reported vs signature-verified line (PAID $1.00) VALUE: BioTrust Service 13 — the Biosecurity Benchmark & Trust Registry. PRICE: $1.00 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exa

Verify a researcher, institution, publication or company against public registries, and screen a name against the official sanctions lists (PAID $0.75) VALUE: BioTrust Service 14 — Registry Verification. PRICE: $0.75 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount and put

Record a biosafety or biosecurity review decision, with separation of duties and an append-only history (PAID $0.50) VALUE: BioTrust Service 10 — the Biorisk Workflow Manager. PRICE: $0.50 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount and put it in the `X-PAYMENT` heade

Budget Preflight VALUE: Whether this call fits the budget, BEFORE you spend — turns a surprise overage into a decision you can make in advance. PRICE: $0.25 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount and put it in the `X-PAYMENT` header, then retry the same call. An

x402 Bureau — full conformance audit of any endpoint (PAID $0.25) VALUE: A full conformance audit of any target endpoint against the x402 standard, every clause, signed and dated — the check a buyer cannot do from the outside. PRICE: $0.25 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for t

x402 Bureau — conformance-check any issuer's receipt/offer (PAID $0.05) VALUE: Independent verification that a receipt is genuine and matches the offer it claims to settle — counterparty-side proof, not your own. PRICE: $0.05 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amoun

x402 Bureau — reputation from signed observation history (PAID $0.10) VALUE: The Verification Bureau's standing reputation read for a subject, from its own corpus — third-party standing you cannot manufacture. PRICE: $0.10 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount a

Compliance Check VALUE: A specific, dated compliance verdict for one described processing activity — the artifact a regulator asks for, not a policy PDF. PRICE: $1.00 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount and put it in the `X-PAYMENT` header, then retry the same

Containment Register VALUE: A registered, signed containment policy with named emergency contacts — so 'what happens if this agent goes wrong' has an answer that is already signed and enforceable. PRICE: $0.25 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount and put it in

Signed rule-based extraction of the clauses that decide money and liability (PAID $1.50) VALUE: The obligations in a contract as structured, dated data — so compliance is a query, not a re-read of forty pages. PRICE: $1.50 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount a

Dated, signed proof that a document set existed — a Merkle root, the leaves, and a real inclusion proof (PAID $2.00) VALUE: Anchor a document set. PRICE: $2.00 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount and put it in the `X-PAYMENT` header, then retry the same call.

Counterparty credit & conduct score from your own observations (PAID $0.50) VALUE: Price the risk of paying an unknown agent, endpoint or host from YOUR OWN observations — a 0-1000 credit and conduct score with the weighted factors behind it, so you price trust before you pay. PRICE: $0.50 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c

Issue a scoped, expiring, offline-verifiable capability credential (PAID $0.05) VALUE: A scoped, time-limited, signed credential — delegation with an expiry, so access does not have to be revoked by hand. PRICE: $0.05 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount and pu

C2Pa Verify VALUE: Whether a media file carries a valid C2PA provenance manifest — the check that separates authentic media from generated media. PRICE: $0.25 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount and put it in the `X-PAYMENT` header, then retry the same call. A

Assess whether data is still fresh, undated or conflicting (PAID $0.02) VALUE: Whether a claim's source is still fresh enough for the decision you are about to make — staleness is the failure mode nobody prices in. PRICE: $0.02 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amo

Signed Snapshot VALUE: A tamper-evident snapshot of a series with its sources and fetch time — a data point you can defend later, not just cite. PRICE: $0.30 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount and put it in the `X-PAYMENT` header, then retry the same call. An

Validate, normalise and mechanically repair a payload against a declared JSON-Schema subset. Repair never fabricates data: a required property with no default is reported missing, not inserted. Keywords outside the supported subset are reported in schema_keys_unsupported rather than silently ignored. VALUE: Coercion and repair of a payload against a schema, with the repairs itemised — malformed i

Signed decision attestation with an assurance level and explicit unknowns (PAID $2.50) VALUE: A signed, dated, replayable attestation of a decision and the policy that produced it — the difference between a decision and an accountable one. PRICE: $2.50 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthor

Proof that a digital deliverable arrived and matched what was promised (PAID $0.10) VALUE: A paid service on the x402 rail — the result is worth the call because the same work done by hand costs more time than the price. PRICE: $0.10 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exa

Signed advisory dispute ruling from a deterministic rubric (PAID $2.00) VALUE: A binding ruling on a dispute from the contract, evidence and policy — so the resolution is a signed artifact, not an argument. PRICE: $2.00 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount and

Prior-test registry query: what has actually been tested on an instrument/timeframe/strategy-type before, and what the prior evidence says. Every field is optional but at least one must be supplied. VALUE: What has actually been tested on this instrument, timeframe and strategy type before, and what the prior evidence says — so you do not pay to rediscover a known result. PRICE: $0.05 USDC per c

Is that track record real, or did you find it by looking? (PAID $3.00) VALUE: Whether a claimed edge survives replication on your own returns — the test that separates a real edge from a curve fit. PRICE: $3.00 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount and put it in

Seal one signed-attribution / forensics evidence record into a tamper-evident vault entry. VALUE: Sealing one evidence record into a tamper-evident vault entry — chain of custody that survives after the fact. PRICE: $0.20 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount an

Bind sealed forensics-vault entries into ONE signed query receipt. VALUE: Querying that vault by actor or predicate — the retrieval side of evidence you cannot quietly edit. PRICE: $0.15 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount and put it in the `X-PAYMENT` header,

Assess and attest a financial statement or metrics payload into signed, reproducible evidence. VALUE: Signed, dated financial evidence extracted from a statement — the figure a lender, investor or auditor can rely on without a call. PRICE: $0.35 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization

Exact-decimal financial calculation with its published convention (PAID $0.01) VALUE: Exact decimal arithmetic under stated conventions — financial totals that do not drift by a cent when you scale them. PRICE: $0.01 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount and put

The institutional tearsheet, reproducible: every ratio re-derivable from the returns series and the published formula version (PAID $5.00) VALUE: Compute the tearsheet. PRICE: $5.00 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount and put it in the `X-PAYMENT` header, then

Agent Spend Governor — ATOMIC reserved lease (PAID $0.02) VALUE: A leased, expiring reservation of budget for a named intent — spend that is committed before it is spent. PRICE: $0.02 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount and put it in the `X-PAYMENT` header, th

Agent Spend Governor — settle a lease, idempotent (PAID $0.02) VALUE: Closing a reservation against what was actually spent — the difference between a budget and a wish. PRICE: $0.02 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount and put it in the `X-PAYMENT` header, the

Bind an agent to its operator and wallet, with the evidence and an honest grade of it (PAID $1.00) VALUE: Bind an agent to its operator and its wallet. PRICE: $1.00 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount and put it in the `X-PAYMENT` header, then retry the same c

Identity Control Proof VALUE: Proof that a claimer controls an identifier, signed and dated — so an identity claim is a verification, not an assertion. PRICE: $0.20 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount and put it in the `X-PAYMENT` header, then retry the same c

The signed Synthex Agentic-Commerce Index: a dated, rule-published mark (PAID $5.00) VALUE: The Synthex Agentic-Commerce Index — a dated, signed mark on the agentic economy itself, computed from our own observation corpus of x402 settlements. The rules are published with the answer, so you can re-derive the marks. PRICE: $5.00 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc

Invoice Ocr VALUE: Structured line items, vendor and total from an invoice image — the manual data entry an agent removes. PRICE: $0.02 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount and put it in the `X-PAYMENT` header, then retry the same call. An unpaid call returns a

Latency benchmark of a third-party API, measured by us (PAID $0.05) VALUE: The latency percentiles of a vendor's API from our own probes — the number a performance-based selection is actually made on. PRICE: $0.05 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount and put it

Licence Check VALUE: Whether a specific dataset licence permits a specific intended use in a specific jurisdiction — a legal question with a dated answer. PRICE: $0.10 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount and put it in the `X-PAYMENT` header, then retry the sam

Signed compliance certificate: does this portfolio comply with this mandate (PAID $5.00) VALUE: A signed, dated compliance certificate an allocator can actually file — replaces an analyst hour on a document, and never certifies compliance on missing evidence. PRICE: $5.00 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-300

Signed market-hours / holiday / settlement answer (PAID $0.01) VALUE: Session hours, holidays and settlement cut-offs for a venue, DST aware — so you never settle into a closed market. PRICE: $0.01 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount and put it in the `X-PAYME

Signed bar series over an explicit range (PAID $1.00) VALUE: Historical bars for an instrument, formatted and bounded — the data a backtest needs, without hand-assembling it. PRICE: $1.00 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount and put it in the `X-PAYMENT` header

Signed bulk bar series, up to 20 pairs (PAID $5.00) VALUE: The same history for many pairs in one call — the cost of a portfolio-wide study drops to a single request. PRICE: $5.00 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount and put it in the `X-PAYMENT` header, then r

Is this market trending or ranging? Signed regime read from your own series (PAID $0.05) VALUE: Return ONE signed, dated regime read. PRICE: $0.05 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount and put it in the `X-PAYMENT` header, then retry the same call. An unpaid cal

Signed OHLCV snapshot from our own market-data store (PAID $0.01) VALUE: A point-in-time market snapshot for an instrument, bounded and timestamped — the 'now' you stamp a decision with. PRICE: $0.01 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount and put it in the `X-PAY

Judge Grade VALUE: A rubric-scored judgement of a model response, signed and dated — evaluation you can re-check rather than re-argue. PRICE: $0.15 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount and put it in the `X-PAYMENT` header, then retry the same call. An unpaid ca

Tool Permission Threatmodel VALUE: A threat model of a tool manifest with per-tool permissions and runaway protection — the analysis before you grant an agent a capability. PRICE: $0.25 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount and put it in the `X-PAYMENT` header,

Uptime Canary Probe VALUE: Independent uptime confirmation tied to a settled receipt — proof of service that a self-report cannot manufacture. PRICE: $0.25 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount and put it in the `X-PAYMENT` header, then retry the same call. An u

Return the latest signed, reproducible sealed state for a key. VALUE: Reading that durable memory back — continuity for an agent that must not forget. PRICE: $0.05 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount and put it in the `X-PAYMENT` header, then retry the same ca

Persist a budget-capped state version into a signed, reproducible memory vault. VALUE: A durable, owned memory entry — a fact that survives the session and belongs to someone you can name. PRICE: $0.10 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount and put it in the `X-P

Signed NAV attestation for agent treasuries: what is this book worth, as of when, computed how (PAID $10.00) VALUE: A signed NAV attestation for agent treasuries — the single document every allocator, auditor and counterparty asks for: what is this book actually worth, as of when, computed how. PRICE: $10.00 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599

Output Verify VALUE: Whether an output actually satisfies its schema, claims and staleness budget — a check the model cannot run on itself. PRICE: $0.50 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount and put it in the `X-PAYMENT` header, then retry the same call. An unpa

Pass Purchase VALUE: Prepaid capacity at a lower effective per-call price — the difference between renting and owning the cost. PRICE: $25.00 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount and put it in the `X-PAYMENT` header, then retry the same call. An unpaid call ret

Buy a trial prepaid capacity pass — $0.50 for 20 calls, 7 days (PAID $0.50) VALUE: The trial tier of the same prepaid capacity — proof of the unit economics before you commit to the full pass. PRICE: $0.50 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount and put it in the

Will this payment settle inside my deadline? (PAID $0.05) VALUE: Whether a payment will still settle inside your deadline, judged on the settlement times we have measured for that rail — the check that stops a slow rail from blowing a deadline. PRICE: $0.05 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithA

Validate a captured x402 402 payment envelope (PAID $0.25) VALUE: Whether a signed payment envelope is well-formed, unexpired and for the right resource — catch a bad payment before it settles. PRICE: $0.25 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount and put it in the

Deterministic policy evaluation: is this action allowed under this policy given this caller state? Returns a signed allow/deny verdict with the specific rule that fired. Safe-deny on malformed input. VALUE: Whether one action is permitted for one caller under one policy, as of one instant — enforcement you can ask a question of. PRICE: $0.10 USDC per call. HOW TO PAY: USDC on eip155:8453, exact

Signed exposure report under the caller's own risk model (PAID $3.00) VALUE: Risk for a set of positions under a named model, dated — the number that decides whether a portfolio is sized right. PRICE: $3.00 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount and put it in the

Signed preflight verdict on a counterparty BEFORE you pay them. Returns a three-state verdict (go | caution | avoid | unknown) with dated, signed evidence. Fewer than 3 independent observations in 30 days returns `unknown` with the coverage gap named — never a guessed `go`. VALUE: The agent's first call: a signed three-state verdict on a counterparty before you pay them, with the coverage gap nam

Pre-trade risk gate: approve / reduce / reject an order against your own declared limits (PAID $0.25) VALUE: The order gate: approve, reduce or reject an order against the risk limits you declared — and a `reduce` hands back a size that actually passes, so one bad order never reaches the market. PRICE: $0.25 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599

Reconcile three ledgers — what was ordered, what was delivered, what was paid — with every variance naming its direction (PAID $0.50) VALUE: Reconcile the three ledgers. PRICE: $0.50 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount and put it in the `X-PAYMENT` header, the

Signed provenance for a piece of content, so a buyer can see where it came from (PAID $0.10) VALUE: Produce a signed provenance overlay for a piece of content. PRICE: $0.10 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount and put it in the `X-PAYMENT` header, then retry th

What does the equity curve look like? Seeded distribution of terminal outcomes (PAID $0.15) VALUE: Return ONE signed, dated Monte Carlo distribution. PRICE: $0.15 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount and put it in the `X-PAYMENT` header, then retry the same cal

Are these two strategies the same bet? Signed correlation matrix and clusters (PAID $0.10) VALUE: Return ONE signed, dated overlap matrix. PRICE: $0.10 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount and put it in the `X-PAYMENT` header, then retry the same call. An unpai

Can this sizing scheme bankrupt me? First-passage ruin probability with Kelly (PAID $0.05) VALUE: Return ONE signed, dated risk-of-ruin answer. PRICE: $0.05 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount and put it in the `X-PAYMENT` header, then retry the same call. An

Is this return stream distinguishable from noise? Seeded sign-flip permutation test (PAID $0.05) VALUE: Return ONE signed, dated significance test. PRICE: $0.05 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount and put it in the `X-PAYMENT` header, then retry the same call.

Signed quota reservation decision (PAID $0.01) VALUE: Whether a call fits a remaining quota, before you spend it — the check that stops a quota from being discovered by exhaustion. PRICE: $0.01 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount and put it in the `X-PAYMENT`

Readiness Attest VALUE: A signed readiness attestation with the evidence and policy snapshot behind it — readiness you can evidence, not assert. PRICE: $0.25 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount and put it in the `X-PAYMENT` header, then retry the same call. An

Mint a signed typed receipt for any transaction or action. VALUE: A signed receipt for an action, mintable as evidence of what happened — a portable 'it did that'. PRICE: $0.25 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount and put it in the `X-PAYMENT` header, then retr

Generate a tamper-evident, signed research brief on a requested topic. VALUE: A researched brief on a topic with its sources and depth stated, attested — research with a provenance you can point at. PRICE: $2.00 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount and put it i

An ADVISORY execution plan for moving money — it never moves money: no keys, no signing, no broadcast (PAID $0.05) VALUE: Plan the route. Advisory only. PRICE: $0.05 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount and put it in the `X-PAYMENT` header, then retry the same

Sec Extract VALUE: Structured data extracted from a company's SEC filings — primary filings, not a data vendor's interpretation of them. PRICE: $0.05 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount and put it in the `X-PAYMENT` header, then retry the same call. An unpaid

Dependency Risk VALUE: Risk analysis of a dependency set for a given ecosystem — supply chain exposure enumerated rather than assumed. PRICE: $0.20 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount and put it in the `X-PAYMENT` header, then retry the same call. An unpaid ca

Redteam Authorized Scan VALUE: An authorized adversarial scan of a target you have evidence of permission to test — the finding, with the authorization on the record. PRICE: $0.25 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount and put it in the `X-PAYMENT` header, then r

Threatmodel Analyze VALUE: A threat model of a tool manifest in its deployment context — attack surface before it is exploited. PRICE: $0.25 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount and put it in the `X-PAYMENT` header, then retry the same call. An unpaid call retu

Signed conditional-release verdict — are the release conditions met? (PAID $0.25) VALUE: A settlement that releases only if its named conditions hold — escrow logic as a single call. PRICE: $0.25 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount and put it in the `X-PAYMENT

Signed settlement-receipt verdict for a tx hash (PAID $0.01) VALUE: Independent confirmation that a transaction settled to the right payee for the right amount — proof of payment from the ledger, not from the payer. PRICE: $0.01 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact am

Which rail should this settlement use? Fee, speed and the constraint that excluded every other rail (PAID $0.50) VALUE: Advise on the settlement route. PRICE: $0.50 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount and put it in the `X-PAYMENT` header, then retry the same c

Evidence package for a vendor SLA breach (PAID $1.00) VALUE: The evidence package when a vendor misses its stated SLA: measured against claimed, with the shortfall itemised — what a dispute needs and nobody has. PRICE: $1.00 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount

Screen an SME sale against the house LBO structure and rules (PAID $2.50) VALUE: A structured screen of an SME on turnover, EBITDA, structure and sector — the first pass over an acquisition candidate. PRICE: $2.50 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount and put it

Is this agent's spending behaving normally? A named z-score test and the counterparty that drove it (PAID $0.05) VALUE: Judge whether the spend is normal. PRICE: $0.05 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount and put it in the `X-PAYMENT` header, then retry the sam

Signed attestation of an agent's spend (PAID $0.50) VALUE: A signed, dated attestation of what an agent spent, for its principal — the artefact that makes an agent's spend reviewable instead of self-reported. PRICE: $0.50 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount an

How much money can this strategy actually carry? Returns capacity_computed | insufficient_input | no_capacity, with the capacity, a band, the binding constraint, the alpha after costs and a degradation curve. Capacity DECREASES as the assumed Sharpe falls. A missing adv_usd returns insufficient_input naming the field — the engine never guesses a liquidity figure. VALUE: How much money can this st

Is this edge deployable? Deflated Sharpe with a calibrated multiple-testing threshold (PAID $2.00) VALUE: Return ONE signed, dated strategy verdict. PRICE: $2.00 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount and put it in the `X-PAYMENT` header, then retry the same call

Fold research + quant + audit inputs into ONE signed verdict. VALUE: A signed verdict fusing audit, quant and research inputs on one subject — the answer, with the inputs that produced it. PRICE: $0.50 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount and put it in the `X-P

Did the work meet the spec, criterion by criterion? Per-criterion pass / fail / undetermined, with an absent observation never counted as a pass (PAID $0.25) VALUE: Grade the observations against the spec. PRICE: $0.25 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount and p

Signed uptime of a third-party API, measured by us (PAID $0.10) VALUE: The uptime of a vendor's API, measured by us and signed, so you are not trusting their own status page when you make a procurement call. PRICE: $0.10 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount and

Utils Code Review Brief VALUE: A structured review brief for a code block — the issues worth reading, separated from the noise. PRICE: $0.15 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount and put it in the `X-PAYMENT` header, then retry the same call. An unpaid call retu

Utils Doc Convert VALUE: Converting a document between formats with a signed output — turning a file into something a machine can read. PRICE: $0.10 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount and put it in the `X-PAYMENT` header, then retry the same call. An unpaid c

Utils Invoice Extract VALUE: Structured line items from invoice text — the manual data entry an agent removes, without the image. PRICE: $0.10 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount and put it in the `X-PAYMENT` header, then retry the same call. An unpaid call re

Utils Pii Redact VALUE: Redacting names and other identifiers from text, in place — compliance with a diff you can inspect. PRICE: $0.25 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount and put it in the `X-PAYMENT` header, then retry the same call. An unpaid call returns

Utils Schema Cleanup VALUE: Cleaning a CSV or JSON payload against a schema — the messiness removed before it reaches your model. PRICE: $0.05 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount and put it in the `X-PAYMENT` header, then retry the same call. An unpaid call re

Utils Translate Doc VALUE: Translating a document with its structure preserved — a document an agent in another language can actually use. PRICE: $0.10 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount and put it in the `X-PAYMENT` header, then retry the same call. An unpai

Dated signed verdict on a counterparty wallet (PAID $0.02) VALUE: Is this wallet safe to transact with right now? PRICE: $0.02 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount and put it in the `X-PAYMENT` header, then retry the same call. An unpaid call returns a `payment

Judge a whole portfolio in one call. Batch verdict with significance, risk and overlap (PAID $5.00) VALUE: Return ONE signed, dated batch verdict. PRICE: $5.00 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount and put it in the `X-PAYMENT` header, then retry the same call.

Dated signed verdict on an endpoint (PAID $0.02) VALUE: Will this URL pay me if I call it? PRICE: $0.02 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount and put it in the `X-PAYMENT` header, then retry the same call. An unpaid call returns a `payment_required` payload with

Dated signed verdict on a listed service (PAID $0.02) VALUE: Is this listed service alive, honest and fairly priced? PRICE: $0.02 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount and put it in the `X-PAYMENT` header, then retry the same call. An unpaid call returns a `paym

Dated signed verdict on an MCP tool (PAID $0.02) VALUE: Is this MCP tool safe to grant? PRICE: $0.02 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount and put it in the `X-PAYMENT` header, then retry the same call. An unpaid call returns a `payment_required` payload with th

Register a service into the network-effect verify catalog and grow the trust index. VALUE: Registering a service in the verification catalogue with its signature — the entry that lets others verify it too. PRICE: $0.25 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount and p

Create a signed, tamper-evident track-record attestation (Ed25519 + SHA-256) over any claim. VALUE: A signed, dated attestation of a claim with a claim type — a standalone 'this is true, and here is when'. PRICE: $0.25 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount and p

Dated proof of what existed at time T (PAID $0.01) VALUE: A dated economic anchor point for the x402 economy — the yardstick for whether activity is actually growing. PRICE: $0.01 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount and put it in the `X-PAYMENT` header, then r

The queryable index of the agent economy: what is offered, what it costs, and whether it still works. An endpoint is never invented — every result exists in the corpus with a `last_seen`. VALUE: The live index of paid x402 services, filterable by price, network and conformance — where new services are found. PRICE: $0.02 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67F

Cost + landing quote for a target call (PAID $0.01) VALUE: What a call will actually cost and whether it will land, priced from the 402 envelopes we have observed ourselves — so an agent prices a vendor before it commits instead of after. PRICE: $0.01 USDC per call. HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthori

Liveness and settlement-configuration probe for the x402 service. Returns the live network, receive address and whether settlement is enabled. VALUE: Free, because an agent that cannot tell a live service from a dead one pays for nothing useful. PRICE: FREE — no payment required. Call it directly. No payment, no headers, no account.

Verify a signed receipt you already hold — FREE, no payment, no network call to us. Recomputes the canonical JSON digest and checks the Ed25519 signature against the published public key, so you can confirm a receipt's authenticity before you act on it. VALUE: Free, because verifying a receipt you already paid for must never cost a second payment. PRICE: FREE — no payment required. Call it dire