CM

Cypher MCP

io.github.lonniev/cypher-mcp

Monetized graph answers via named Cypher queries — Tollbooth DPYC operator

Yes, your AI can use this right now.Answered a live MCP handshake in 2027 ms with no sign-in needed and exposes 112 tools.

Connect it

Settings → Connectors → Add custom connector
URL: https://cypher-mcp.fastmcp.app/mcp

112 tools, verified live

Pulled straight from the server with tools/list on 2026-10-17.
cypher_check_balanceread-only

Check a patron's credit balance at this operator. This is the patron's spending balance — credits purchased via Lightning for tool calls at this operator. For the operator's own balance at the Authority (needed to certify patron purchases), use authority_check_balance instead. Free — no credits required. Proof of npub ownership is required to prevent anyone-with-the-registry from enumerating

cypher_purchase_credits

Buy credits via Bitcoin Lightning. Creates a Lightning invoice. Pay it with any Lightning wallet, then call check_payment to confirm. Proof of npub ownership is required so credits land in the correct ledger. Free — no credits required to call.

cypher_check_payment

Check the payment status of a Lightning invoice. Call after paying the invoice from purchase_credits. Free — no credits required. Proof of npub ownership is required to prevent credit-grant front-running by an observer of the invoice ID.

cypher_restore_credits

Credit a patron's ledger from a BTCPay-settled invoice. **RESTRICTED to the operator** — the operator owns the books and is the only party who can issue a manual credit grant. Patrons who believe they paid but never got credits must escalate to the operator's support, who then invokes this tool on their behalf. Use cases: cold-start vault races during check_payment, ncred delivery hiccups, pat

cypher_account_statementread-only

Generate a patron's account statement at this operator. Returns the patron's purchase history, active credit tranches, per-tool usage breakdown, and recent daily usage logs. This is the patron's spending account — not the operator's Authority tax balance. Free — no credits consumed. Proof of npub ownership is required to prevent statement-scraping of arbitrary patrons.

cypher_account_statement_infographicread-only

Generate a visual SVG infographic of your account statement. Returns the same data as account_statement, rendered as a dark-themed SVG graphic with balance hero, metrics cards, health gauge, tranche table, and tool usage breakdown. Costs 1 api_sat per call. Proof is verified by ``debit_or_deny`` before any cost is incurred.

cypher_report_issue

File a field report about this service as a GitHub issue on the operator's repo. Found a tool's metadata or response wrong or confusing? Report it where the tool lives. The **author of record is your npub** — no npub / no proof, no issue — and it is stamped into the issue so the report is attributed to you, not the operator. Costs a small fee (a free write to an issue tracker would be abused)

cypher_service_statusread-only

Check the health and configuration of this service. Free.

cypher_request_echoread-only

Echo what the client sent with this request. Free. Reports the URL path and query, the headers, the cookies and the MCP request ``_meta``. Values are SHA-256 fingerprints, so nothing a client sends is repeated back; equal fingerprints mean equal values. Call it from two conversations and compare: a value that stays the same within one and changes between them identifies the conversation.

cypher_get_operator_onboarding_statusread-only

Report this operator's configuration readiness. Shows which operator settings are configured, which are missing, and how to deliver each missing value. For patron-level credential status, use get_patron_onboarding_status instead. Free.

cypher_get_patron_onboarding_statusread-only

Report a patron's credential readiness for this operator. For set-once services (eXcalibur, TheBrain), shows which patron secrets are configured and which are missing. For dynamic/OAuth2 services (Schwab), reports that no patron credentials are needed. Free. Proof of npub ownership is required because credential presence is sensitive information about the patron's setup.

cypher_session_statusread-only

Check operator readiness. Returns the operator lifecycle state and clear guidance on what to do next. Free. Lifecycle states: - ready: Vault AND pricing model verified on this call. Proceed with tool calls — this is the answer the moment the vault is up. - warming_up: Persistence could not be reached on this call (a transient failure, seen, not assumed). Retry; the next call completes the

cypher_request_credential_channel

Open a Secure Courier channel for credential delivery. This is the CREDENTIAL-DELIVERY flow — use it to hand over a service secret (API keys, tokens). To merely prove you control an npub (the usual answer to a ``proof_required`` error), use ``request_npub_proof`` instead. Note: dynamic/OAuth2 services (e.g. Schwab) need NO couriered secret — check ``service_status`` first. Sends a welcome DM

cypher_receive_credentialscan modify

Pick up credentials from the Secure Courier. Completes the CREDENTIAL-DELIVERY flow (the ownership-proof counterpart is ``receive_npub_proof``). **Call this only after the user confirms they have replied.** Deterministic, one-shot retrieval: name the response you want with ``(sender_npub, service, dpop_token)`` and the tool drains ONLY the rendezvous relay that channel was pinned to. Every poppe

cypher_forget_credentialscan modify

Delete vaulted credentials for a specific service and npub. For operator credentials, pass the operator's own npub. For patron credentials, pass the patron's npub. Always requires proof of npub ownership — a deletion is as destructive as a write.

cypher_update_patron_credential

Add or update a single patron credential field. Merges into existing stored credentials without affecting other fields. Useful for setting an account identifier after OAuth, changing a default brain, etc. Free. Proof of npub ownership is required — this is a write to the patron's sensitive credential vault.

cypher_update_operator_credential

Add or update a single operator secret field. Merges into the operator's stored credentials without touching the others — the field-level counterpart to re-delivering the whole bundle over Secure Courier. Use it to rotate one secret (a reissued ``btcpay_api_key``, say) without restating the six you did not change, where any field omitted from a courier reply is destroyed. The value is never ec

cypher_delete_patron_credentialcan modify

Remove a single patron credential field. Deletes one field from stored credentials without affecting other fields. Free. Proof of npub ownership is required — this is a write to the patron's sensitive credential vault.

cypher_delete_operator_credentialcan modify

Remove a single operator secret field. Deletes one key from the operator's encrypted credential blob without touching the others — the field-level counterpart to ``forget_credentials``, which wipes the whole row. Use it to retire a leftover after an SDK cutover (a Prefect key after Modal, or a stored but untemplated orphan like ``anthropic_api_key``) without taking the operator down for a full

cypher_get_patron_credential_fieldsread-only

List stored patron credential field names (not values). Returns the names of fields stored for a patron, plus each field's ``delivered_at`` ISO-8601 timestamp when known (null for secrets vaulted before timestamps were recorded). Values are never exposed — use this to verify which fields are configured and how old each one is. Free. Proof of npub ownership is required: the list of configured fi

cypher_request_npub_proof

Request npub ownership proof from a patron via Nostr DM. This is the npub-OWNERSHIP-PROOF flow — use it when a call returns ``proof_required``. It proves the caller controls an npub; it does NOT deliver any service secret. To hand an operator its API keys or OAuth secrets, use ``request_credential_channel`` instead. Sends a challenge DM that the patron must sign and reply to using their Nostr

cypher_receive_npub_proofcan modify

Receive npub ownership confirmation from a patron. Completes the npub-OWNERSHIP-PROOF flow (the credential-delivery counterpart is ``receive_credentials``). **Call this only after the user confirms they have replied.** Deterministic, one-shot retrieval: name the response with ``(patron_npub, dpop_token)`` — the ``dpop_token`` being the value returned by ``request_npub_proof``. The tool drains

cypher_check_proof_statusread-only

Check whether a proof grant is still valid. Mirrors ``check_oauth_status`` for the npub-proof flow: a calling agent can ask "will my next paid call accept this dpop_token?" before burning credits on a guaranteed failure. Expiry is read from the grant itself; the only store consulted is the patron's revocation watermark. Free, no side effects — touches no relay.

cypher_oracle_how_to_joinread-only

Get DPYC onboarding instructions from the Oracle. Free.

cypher_oracle_get_tax_rateread-only

Get the current DPYC certification tax rate. Free.

cypher_oracle_lookup_memberread-only

Look up a DPYC community member by npub. Free.

cypher_oracle_aboutread-only

Describe the DPYC ecosystem via the Oracle. Free.

cypher_oracle_network_advisoryread-only

Get active network advisories from the Oracle. Free.

cypher_check_authority_balanceread-only

Check this operator's tax balance at the Authority. Returns the sats available for certifying patron credit purchases. When this balance reaches zero, patron top-ups cannot be certified and the operator must call purchase_credits on the Authority. This is the operator's own funding — not a patron balance. Free.

cypher_get_pricing_modelread-only

Get the active pricing model for this operator. Free. If no model exists, self-initializes a scaffold with all registered tools at 0 sats. No economic data from code.

cypher_set_pricing_modelcan modify

Set the active pricing model. RESTRICTED to operator. Requires a valid proof (Schnorr-signed kind-27235 event) proving the caller holds the operator's nsec.

cypher_reset_pricing_modelcan modify

Erase all pricing models and restore a viable default. Deletes every stored model, then self-initializes a fresh one from the tool registry — all tools at 0 sats with proper UUIDs. Returns the new model. RESTRICTED to operator — requires proof (nsec-signed).

cypher_request_adoption

Ask a chosen Authority to adopt this operator (deferred courtship). RESTRICTED to the operator — requires proof the caller controls this operator's npub. Resolves the Authority's MCP endpoint from the community registry, mints an inline ownership proof with this operator's nsec, and delivers the request MCP-to-MCP. The Authority records it as pending; its owner approves on their own time. Poll

cypher_adoption_statusread-only

Check this operator's adoption-request status at a chosen Authority. Free. Polls the Authority MCP-to-MCP for the status of this operator's request (pending / approved / rejected / provisioned).

cypher_restore_neon_schema

Prepare this operator's database schema again, ignoring the breadcrumb. Diagnostic / recovery tool for when Neon keeps answering 4xx and the operator suspects a table or grant is missing. Every statement is idempotent, so a clean re-run is harmless; the breadcrumb is rewritten at the end. Returns one step per concern, with Neon's own error text inline for any that failed. RESTRICTED to operator

cypher_list_canonical_identitiesread-only

Return canonical (tool_id, mcp_name, …) for every tool the wheel exposes. The authoritative source for any client (Studio, agents, FE) that needs to know how this MCP identifies its tools. Reconcile uses this output to UUID-join against the stored pricing model — no name-based UUID derivation, no guessing. Includes both ToolIdentity-seeded tools and any UUID recorded by ``@paid_tool`` that i

cypher_get_nostr_profileread-only

Read an npub's public Nostr profile (NIP-01 kind-0 metadata). Free, no proof — the data is already public on relays. Returns the latest metadata fields (name, display_name, about, picture, banner, nip05, website, lud16) or an empty profile if none is published.

cypher_publish_nostr_profilecan modify

Publish a CLIENT-SIGNED kind-0 profile to relays for an npub. The wheel never holds a patron nsec. The frontend signs the kind-0 metadata event with the patron's session key or a NIP-07 extension and passes the signed event (JSON) here; the wheel verifies the signature matches the npub, then relays it to public relays. The signature is the authorization — no proof token, no key custody. Free.

cypher_check_priceread-only

Preview the effective cost of a tool call. Shows the base cost and any constraint effects (discounts, free trials, surge pricing). Free — no credits required.

cypher_list_constraint_typesread-only

List all available constraint types and their parameter schemas. Returns the type, category, description, and parameter specs for every constraint that can be used in a pricing pipeline. Free — no credits required.

cypher_mint_coupon

Create a new operator-owned discount coupon. The coupon owns its binding: ``tool_ids`` names the tools it discounts, and re-pricing a tool never touches it. A coupon bound to no tool discounts nothing, however many patrons redeem it.

cypher_list_couponsread-only

List every coupon this operator has minted (newest first). Each row carries the current ``times_redeemed`` counter — the Studio renders a progress bar from this against ``total_uses``. RESTRICTED to operator — requires proof.

cypher_update_coupon

Patch a coupon's editable fields. Pass only the fields you want to change. To set a cap to unlimited (NULL in the schema), pass ``clear_uses_per_patron=true`` or ``clear_total_uses=true``. Renaming the code is allowed — existing patron redemption rows survive (they key on coupon id). ``tool_ids`` replaces the coupon's binding — tool ids or MCP tool names, ``["*"]`` for every paid tool, ``[]

cypher_delete_couponcan modify

Delete a coupon. Cascades to all patron redemptions. Any chain step referencing the deleted coupon_id becomes a no-op (the constraint returns neutral on unknown ids) — the Studio surfaces orphan references as warnings. RESTRICTED to operator — requires proof.

cypher_redeem_coupon

Claim a coupon by its name (the code the operator shared). Looks up the operator's coupon by ``code``, validates the window and total cap, and records a per-patron redemption row. Subsequent paid tool calls on this MCP auto-apply the discount until ``uses_per_patron`` is exhausted. Free — no credits required. Requires proof of ``npub``. Idempotent: redeeming the same code twice returns the ex

cypher_list_my_couponsread-only

List the coupons this patron has redeemed on this operator. Returns both active and exhausted redemptions with a per-row ``status`` (``active`` / ``window_closed`` / ``patron_limit`` / ``total_limit``). Free — requires proof of ``npub``.

cypher_forget_couponcan modify

Remove a coupon from this patron's redemption list. Cosmetic only — the coupon itself still exists at the operator, and the patron can re-redeem the same code later while the window allows. Free — requires proof of ``npub``.

cypher_notarize_ledger

Build a Merkle tree of all patron balances and submit the root to Bitcoin via OpenTimestamps. Operator-only background task. Bitcoin confirmation takes 1-6 hours. Free — no credits required.

cypher_get_notarization_proofread-only

Generate a Merkle inclusion proof that a patron's balance was included in a Bitcoin-notarized snapshot.

cypher_list_notarizationsread-only

List recent Bitcoin notarization records.

cypher_execute_query_by_keycan modify

Execute a published, parameterized Cypher query by its key. You supply the key of an operator-published query plus its parameters. The operator owns the query text; you never see or write raw Cypher. If the operator has published a query as a named tool (e.g. ``cypher_which_service_handles``), you can call that directly instead. Billing note: you are charged only for a delivered answer. If the k

cypher_public_factory_statsread-only

Aggregate-only factory stats for the unauthenticated landing pages. Free — no credits, no npub proof. Returns counts only (capabilities, invariants, issues, services, symbols), the resolved_via mix (graph | scoped-grep | wide-grep), and a last-activity timestamp. Never returns issue titles, symbol paths, or npubs. Hard-cached in-process (~5 min) so a sleeping AuraDB free tier is not woken on e

cypher_create_query

Operator-only: publish a new named Cypher query template. The template must reference each declared parameter as $name (binding, not interpolation). param_schema maps param name -> {"type": ..., "required": true|false}; types: string, int, float, bool, list.

cypher_update_querycan modify

Operator-only: update an existing named Cypher query template. Same shape as create_query, but the key must already exist. Every field is replaced with the values given here.

cypher_get_queryread-only

Operator-only: fetch one catalog entry (template + schema + metadata). Includes ``edit_url`` — a one-click deep link into the hosted Neo4j Browser that pre-targets this operator's AuraDB and loads the template in EDIT mode, so the analyst refines it in Neo4j's own UI and saves it back with ``update_query``. Omitted if the operator's Neo4j credentials aren't delivered yet (best-effort; the raw t

cypher_list_queriesread-only

Operator-only: list this operator's published query keys.

cypher_delete_querycan modify

Operator-only: delete a catalog entry by key.

cypher_publish_toolcan modify

Operator-only: expose a catalog query as a named, typed MCP tool. Projects the published query as a first-class tool named ``cypher_<key>`` whose flat, typed parameters come from the query's param schema (e.g. ``cypher_which_service_handles(keyword)``). The tool is registered immediately but starts **unpriced** — it appears in Pricing Studio like any new tool; set its price there. Until priced,

cypher_unpublish_toolcan modify

Operator-only: retire a previously published named tool. The catalog query itself is kept (still runnable via ``execute_query_by_key``); only its projected named tool is removed. Reconnect to see it disappear from the tool list.

cypher_anchor_symbolcan modify

Record where a symbol lives so future triage scopes its grep.

cypher_assert_invariantcan modify

Record an enforceable code invariant.

cypher_assert_rationalecan modify

Record the Journeyman's rationale for a fix (unverified provenance).

cypher_audit_what_changed_sinceread-only

Answer what changed on a capability since a given time.

cypher_audit_what_contradictsread-only

Answer what contradicts a capability's assertions or guarding invariants.

cypher_audit_what_derived_fromread-only

Answer what sources a capability was derived from.

cypher_audit_what_guardsread-only

Answer which invariants guard a capability.

cypher_audit_who_authorizedread-only

Answer who authorized a capability's authoritative why.

cypher_audit_why_existsread-only

Answer why a capability exists with PROV-attributed assertions and gaps.

cypher_authorize_capability_whycan modify

Author the authoritative why for a capability.

cypher_bind_capability_to_symbol

Attach a capability to one of the symbols that implement it.

cypher_bind_rationale_to_symbol

Attach the Journeyman's rationale to a specific code symbol.

cypher_capability_patentsread-only

Show a capability's patent grounding.

cypher_claim_issuecan modify

Mark an issue as actively being worked at the start of an agent's turn.

cypher_context_packread-only

Return the code-orienteering scope for an intent keyword.

cypher_explain_capabilityread-only

Explain why a capability exists and where it lives.

cypher_explain_patent_elementread-only

Show what a patent reference numeral describes.

cypher_factory_resolution_statsread-only

Report how issues were located, to measure grep-scope shrinkage.

cypher_guard_invariant_symbol

Register a symbol an invariant guards.

cypher_index_symbolcan modify

Index a code symbol as belonging to a service.

cypher_invariant_provenanceread-only

Explain an invariant and what it guards.

cypher_issue_provenanceread-only

Fetch an issue's GitHub URLs, fix PRs, and provenance chain for browser click-through.

cypher_link_capability_consumer

Record that a service consumes a capability.

cypher_link_capability_to_patent

Ground a capability in a patent reference numeral.

cypher_link_invariant_to_patent

Ground an invariant in a patent reference numeral.

cypher_link_issue_to_capability

Attach an issue to the capability it is about.

cypher_link_pr

Attach the fix PR to its issue via the FIXES edge.

cypher_link_root_cause

Point an issue at the code symbol that caused it.

cypher_list_capabilitiesread-only

List every capability for semantic intent-matching.

cypher_list_invariantsread-only

List every enforceable invariant.

cypher_list_issuesread-only

List every triaged issue for the Issues register.

cypher_list_patent_elementsread-only

List every filed patent reference numeral.

cypher_list_pull_requestsread-only

List every mirrored pull request for the Pull Requests register.

cypher_mark_funding_statecan modify

Reflect an LLM-credit outage (or its clearance) in the intention graph.

cypher_mark_invariant_contradictioncan modify

Mark two invariants as contradictory.

cypher_note_rejection

Record why the Porter rejected an issue.

cypher_pr_provenanceread-only

Fetch a PR's fixes and the intentions it enforces for the PR dossier.

cypher_recent_activityread-only

List every domain object changed within a date window, across all node types.

cypher_record_scopecan modify

Record the actionable spec and the code-location method for an issue.

cypher_record_triagecan modify

Record the Porter's triage of a GitHub issue.

cypher_register_servicecan modify

Register a repo as a Service node in the factory graph.

cypher_retire_funding_blockcan modify

Retire a stale funding block to a historical record when its item closes.

cypher_route_rejection

Route a target's rejection reason back to the origin issue.

cypher_routing_historyread-only

Show which repos have declined an issue and why.

cypher_service_provenanceread-only

Pivot to a service — its capabilities, symbols, and issues.

cypher_suggest_capability_whycan modify

Offer the Journeyman's read on why a capability exists.

cypher_symbol_provenanceread-only

Pivot to a code symbol — its service, capabilities, issues, decisions, invariants.

cypher_symbols_in_serviceread-only

List a service's indexed symbols.

cypher_upsert_capabilitycan modify

Record a cross-cutting service Capability and one of its owners.

cypher_upsert_patent_elementcan modify

Record a patent reference numeral as a node.

cypher_upsert_pull_requestcan modify

Upsert the live state of a GitHub PR into the graph.

cypher_what_realizes_capabilityread-only

Find the symbols that implement a capability.

cypher_which_service_handlesread-only

Find which service handles a given intent.

Alternatives in Developer Tools

Compare →
Try “Notion”, “Stripe”, “create invoice”, “browser”