Cypher MCP
Monetized graph answers via named Cypher queries — Tollbooth DPYC operator
Connect it
Settings → Connectors → Add custom connector
URL: https://cypher-mcp.fastmcp.app/mcpSettings → Apps & Connectors → Advanced → Developer mode
Create connector with URL: https://cypher-mcp.fastmcp.app/mcp{
"mcpServers": {
"cypher-mcp": {
"url": "https://cypher-mcp.fastmcp.app/mcp"
}
}
}claude mcp add --transport http cypher-mcp https://cypher-mcp.fastmcp.app/mcp{
"servers": {
"cypher-mcp": {
"type": "http",
"url": "https://cypher-mcp.fastmcp.app/mcp"
}
}
}112 tools, verified live
cypher_check_balanceread-onlyCheck a patron's credit balance at this operator. This is the patron's spending balance â 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 â no credits required. Proof of npub ownership is required to prevent anyone-with-the-registry from enumerating
cypher_purchase_creditsBuy 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 â no credits required to call.
cypher_check_paymentCheck the payment status of a Lightning invoice. Call after paying the invoice from purchase_credits. Free â no credits required. Proof of npub ownership is required to prevent credit-grant front-running by an observer of the invoice ID.
cypher_restore_creditsCredit a patron's ledger from a BTCPay-settled invoice. **RESTRICTED to the operator** â 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-onlyGenerate 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 â not the operator's Authority tax balance. Free â no credits consumed. Proof of npub ownership is required to prevent statement-scraping of arbitrary patrons.
cypher_account_statement_infographicread-onlyGenerate 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_issueFile 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** â no npub / no proof, no issue â 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-onlyCheck the health and configuration of this service. Free.
cypher_request_echoread-onlyEcho 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-onlyReport 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-onlyReport 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-onlyCheck 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 â 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_channelOpen a Secure Courier channel for credential delivery. This is the CREDENTIAL-DELIVERY flow â 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 â check ``service_status`` first. Sends a welcome DM
cypher_receive_credentialscan modifyPick 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 modifyDelete 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 â a deletion is as destructive as a write.
cypher_update_patron_credentialAdd 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 â this is a write to the patron's sensitive credential vault.
cypher_update_operator_credentialAdd or update a single operator secret field. Merges into the operator's stored credentials without touching the others â 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 modifyRemove a single patron credential field. Deletes one field from stored credentials without affecting other fields. Free. Proof of npub ownership is required â this is a write to the patron's sensitive credential vault.
cypher_delete_operator_credentialcan modifyRemove a single operator secret field. Deletes one key from the operator's encrypted credential blob without touching the others â 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-onlyList 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 â 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_proofRequest npub ownership proof from a patron via Nostr DM. This is the npub-OWNERSHIP-PROOF flow â 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 modifyReceive 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)`` â the ``dpop_token`` being the value returned by ``request_npub_proof``. The tool drains
cypher_check_proof_statusread-onlyCheck 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 â touches no relay.
cypher_oracle_how_to_joinread-onlyGet DPYC onboarding instructions from the Oracle. Free.
cypher_oracle_get_tax_rateread-onlyGet the current DPYC certification tax rate. Free.
cypher_oracle_lookup_memberread-onlyLook up a DPYC community member by npub. Free.
cypher_oracle_aboutread-onlyDescribe the DPYC ecosystem via the Oracle. Free.
cypher_oracle_network_advisoryread-onlyGet active network advisories from the Oracle. Free.
cypher_check_authority_balanceread-onlyCheck 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 â not a patron balance. Free.
cypher_get_pricing_modelread-onlyGet 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 modifySet 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 modifyErase all pricing models and restore a viable default. Deletes every stored model, then self-initializes a fresh one from the tool registry â all tools at 0 sats with proper UUIDs. Returns the new model. RESTRICTED to operator â requires proof (nsec-signed).
cypher_request_adoptionAsk a chosen Authority to adopt this operator (deferred courtship). RESTRICTED to the operator â 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-onlyCheck 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_schemaPrepare 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-onlyReturn canonical (tool_id, mcp_name, â¦) 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 â 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-onlyRead an npub's public Nostr profile (NIP-01 kind-0 metadata). Free, no proof â 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 modifyPublish 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 â no proof token, no key custody. Free.
cypher_check_priceread-onlyPreview the effective cost of a tool call. Shows the base cost and any constraint effects (discounts, free trials, surge pricing). Free â no credits required.
cypher_list_constraint_typesread-onlyList 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 â no credits required.
cypher_mint_couponCreate 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-onlyList every coupon this operator has minted (newest first). Each row carries the current ``times_redeemed`` counter â the Studio renders a progress bar from this against ``total_uses``. RESTRICTED to operator â requires proof.
cypher_update_couponPatch 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 â existing patron redemption rows survive (they key on coupon id). ``tool_ids`` replaces the coupon's binding â tool ids or MCP tool names, ``["*"]`` for every paid tool, ``[]
cypher_delete_couponcan modifyDelete 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) â the Studio surfaces orphan references as warnings. RESTRICTED to operator â requires proof.
cypher_redeem_couponClaim 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 â no credits required. Requires proof of ``npub``. Idempotent: redeeming the same code twice returns the ex
cypher_list_my_couponsread-onlyList 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 â requires proof of ``npub``.
cypher_forget_couponcan modifyRemove a coupon from this patron's redemption list. Cosmetic only â the coupon itself still exists at the operator, and the patron can re-redeem the same code later while the window allows. Free â requires proof of ``npub``.
cypher_notarize_ledgerBuild 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 â no credits required.
cypher_get_notarization_proofread-onlyGenerate a Merkle inclusion proof that a patron's balance was included in a Bitcoin-notarized snapshot.
cypher_list_notarizationsread-onlyList recent Bitcoin notarization records.
cypher_execute_query_by_keycan modifyExecute 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-onlyAggregate-only factory stats for the unauthenticated landing pages. Free â 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_queryOperator-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 modifyOperator-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-onlyOperator-only: fetch one catalog entry (template + schema + metadata). Includes ``edit_url`` â 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-onlyOperator-only: list this operator's published query keys.
cypher_delete_querycan modifyOperator-only: delete a catalog entry by key.
cypher_publish_toolcan modifyOperator-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** â it appears in Pricing Studio like any new tool; set its price there. Until priced,
cypher_unpublish_toolcan modifyOperator-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 modifyRecord where a symbol lives so future triage scopes its grep.
cypher_assert_invariantcan modifyRecord an enforceable code invariant.
cypher_assert_rationalecan modifyRecord the Journeyman's rationale for a fix (unverified provenance).
cypher_audit_what_changed_sinceread-onlyAnswer what changed on a capability since a given time.
cypher_audit_what_contradictsread-onlyAnswer what contradicts a capability's assertions or guarding invariants.
cypher_audit_what_derived_fromread-onlyAnswer what sources a capability was derived from.
cypher_audit_what_guardsread-onlyAnswer which invariants guard a capability.
cypher_audit_who_authorizedread-onlyAnswer who authorized a capability's authoritative why.
cypher_audit_why_existsread-onlyAnswer why a capability exists with PROV-attributed assertions and gaps.
cypher_authorize_capability_whycan modifyAuthor the authoritative why for a capability.
cypher_bind_capability_to_symbolAttach a capability to one of the symbols that implement it.
cypher_bind_rationale_to_symbolAttach the Journeyman's rationale to a specific code symbol.
cypher_capability_patentsread-onlyShow a capability's patent grounding.
cypher_claim_issuecan modifyMark an issue as actively being worked at the start of an agent's turn.
cypher_context_packread-onlyReturn the code-orienteering scope for an intent keyword.
cypher_explain_capabilityread-onlyExplain why a capability exists and where it lives.
cypher_explain_patent_elementread-onlyShow what a patent reference numeral describes.
cypher_factory_resolution_statsread-onlyReport how issues were located, to measure grep-scope shrinkage.
cypher_guard_invariant_symbolRegister a symbol an invariant guards.
cypher_index_symbolcan modifyIndex a code symbol as belonging to a service.
cypher_invariant_provenanceread-onlyExplain an invariant and what it guards.
cypher_issue_provenanceread-onlyFetch an issue's GitHub URLs, fix PRs, and provenance chain for browser click-through.
cypher_link_capability_consumerRecord that a service consumes a capability.
cypher_link_capability_to_patentGround a capability in a patent reference numeral.
cypher_link_invariant_to_patentGround an invariant in a patent reference numeral.
cypher_link_issue_to_capabilityAttach an issue to the capability it is about.
cypher_link_prAttach the fix PR to its issue via the FIXES edge.
cypher_link_root_causePoint an issue at the code symbol that caused it.
cypher_list_capabilitiesread-onlyList every capability for semantic intent-matching.
cypher_list_invariantsread-onlyList every enforceable invariant.
cypher_list_issuesread-onlyList every triaged issue for the Issues register.
cypher_list_patent_elementsread-onlyList every filed patent reference numeral.
cypher_list_pull_requestsread-onlyList every mirrored pull request for the Pull Requests register.
cypher_mark_funding_statecan modifyReflect an LLM-credit outage (or its clearance) in the intention graph.
cypher_mark_invariant_contradictioncan modifyMark two invariants as contradictory.
cypher_note_rejectionRecord why the Porter rejected an issue.
cypher_pr_provenanceread-onlyFetch a PR's fixes and the intentions it enforces for the PR dossier.
cypher_recent_activityread-onlyList every domain object changed within a date window, across all node types.
cypher_record_scopecan modifyRecord the actionable spec and the code-location method for an issue.
cypher_record_triagecan modifyRecord the Porter's triage of a GitHub issue.
cypher_register_servicecan modifyRegister a repo as a Service node in the factory graph.
cypher_retire_funding_blockcan modifyRetire a stale funding block to a historical record when its item closes.
cypher_route_rejectionRoute a target's rejection reason back to the origin issue.
cypher_routing_historyread-onlyShow which repos have declined an issue and why.
cypher_service_provenanceread-onlyPivot to a service â its capabilities, symbols, and issues.
cypher_suggest_capability_whycan modifyOffer the Journeyman's read on why a capability exists.
cypher_symbol_provenanceread-onlyPivot to a code symbol â its service, capabilities, issues, decisions, invariants.
cypher_symbols_in_serviceread-onlyList a service's indexed symbols.
cypher_upsert_capabilitycan modifyRecord a cross-cutting service Capability and one of its owners.
cypher_upsert_patent_elementcan modifyRecord a patent reference numeral as a node.
cypher_upsert_pull_requestcan modifyUpsert the live state of a GitHub PR into the graph.
cypher_what_realizes_capabilityread-onlyFind the symbols that implement a capability.
cypher_which_service_handlesread-onlyFind which service handles a given intent.
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