mcp server

cypher-mcp

Monetized graph answers via named Cypher queries — Tollbooth DPYC operator

Description as published by the maintainer. Source

• version 0.6.0
• active

active — Registry entry last updated 2026-07-18.

What this server can do

108 functions, named and described by the server itself. Parameter names are shown because they say more about what a function does than its name usually does.

cypher_account_statement(days, npub, dpop_token)

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. Required: npub, dpop_token.

cypher_account_statement_infographic(days, npub, dpop_token)

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. Required: npub, dpop_token.

cypher_adoption_status(dpop_token, authority_npub)

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). Required: authority_npub.

cypher_anchor_symbol(npub, file_path, dpop_token, symbol_fqn, verified_at_sha)

Record where a symbol lives so future triage scopes its grep. Required: file_path, symbol_fqn, verified_at_sha.

cypher_assert_invariant(name, npub, rule, severity, dpop_token)

Record an enforceable code invariant. Required: name, rule.

cypher_assert_rationale(npub, reason, repo_name, statement, dpop_token, decision_id, issue_number)

Record the Journeyman's rationale for a fix (unverified provenance). Required: reason, repo_name, statement, decision_id, issue_number.

cypher_audit_what_changed_since(name, npub, since_ms, dpop_token)

Answer what changed on a capability since a given time. Required: name, since_ms.

cypher_audit_what_contradicts(name, npub, as_at_ms, dpop_token)

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

cypher_audit_what_derived_from(name, npub, as_at_ms, dpop_token)

Answer what sources a capability was derived from. Required: name.

cypher_audit_what_guards(name, npub, as_at_ms, dpop_token)

Answer which invariants guard a capability. Required: name.

cypher_audit_who_authorized(name, npub, as_at_ms, dpop_token)

Answer who authorized a capability's authoritative why. Required: name.

cypher_audit_why_exists(name, npub, as_at_ms, dpop_token)

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

cypher_authorize_capability_why(why, name, npub, dpop_token)

Author the authoritative why for a capability. Required: why, name.

cypher_bind_capability_to_symbol(name, npub, dpop_token, symbol_fqn)

Attach a capability to one of the symbols that implement it. Required: name, symbol_fqn.

cypher_bind_rationale_to_symbol(npub, dpop_token, symbol_fqn, decision_id)

Attach the Journeyman's rationale to a specific code symbol. Required: symbol_fqn, decision_id.

cypher_capability_patents(name, npub, dpop_token)

Show a capability's patent grounding. Required: name.

cypher_check_authority_balance

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_check_balance(npub, dpop_token)

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 balances. Required: npub, dpop_token.

cypher_check_payment(npub, dpop_token, invoice_id)

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. Required: invoice_id, npub, dpop_token.

cypher_check_price(npub, tool_id, dpop_token, tool_kwargs)

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. Required: tool_id.

cypher_check_proof_status(dpop_token, patron_npub)

Check whether a previously-cached dpop_token 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. Free, no side effects — does not evict the cache or touch relays.

cypher_claim_issue(npub, title, activity, issue_url, repo_name, worked_by, dpop_token, issue_number)

Mark an issue as actively being worked at the start of an agent's turn. Required: activity, issue_url, repo_name, worked_by, issue_number.

cypher_context_pack(npub, keyword, dpop_token)

Return the code-orienteering scope for an intent keyword. Required: keyword.

cypher_create_query(key, npub, row_limit, dpop_token, timeout_ms, access_mode, description, param_schema, cypher_template)

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. Required: key, cypher_template.

cypher_delete_coupon(coupon_id, dpop_token)

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. Required: coupon_id.

cypher_delete_patron_credential(npub, field, dpop_token)

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. Required: npub, dpop_token, field.

cypher_delete_query(key, npub, dpop_token)

Operator-only: delete a catalog entry by key. Required: key.

cypher_execute_query_by_key(key, npub, params, dpop_token)

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_find_airline_flights``), you can call that directly instead. Billing note: you are charged only for a delivered answer. If the key is unknown, the parameters are invalid, or the query fails, the call raises and your debit is rolled back (no charge for value not delivered). Required: key.

cypher_explain_capability(name, npub, dpop_token)

Explain why a capability exists and where it lives. Required: name.

cypher_explain_patent_element(ref, npub, dpop_token)

Show what a patent reference numeral describes. Required: ref.

cypher_factory_resolution_stats(npub, dpop_token)

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

cypher_find_airline_flights(npub, to_city, from_city, dpop_token)

Find airline routes between two cities (named-tool smoke test). Required: to_city, from_city.

cypher_forget_coupon(npub, coupon_id, dpop_token)

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``. Required: npub, coupon_id.

cypher_forget_credentials(npub, service, dpop_token)

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. Required: service, npub, dpop_token.

cypher_get_nostr_profile(npub)

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_get_notarization_proof(npub, notarization_id)

Generate a Merkle inclusion proof that a patron's balance was included in a Bitcoin-notarized snapshot. Required: notarization_id, npub.

cypher_get_operator_onboarding_status

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_credential_fields(npub, dpop_token)

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 fields is itself sensitive (reveals which integrations a patron has set up). Required: npub, dpop_token.

cypher_get_patron_onboarding_status(dpop_token, patron_npub)

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. Required: patron_npub, dpop_token.

cypher_get_pricing_model

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_get_query(key, npub, dpop_token)

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 template is always present to paste). Required: key.

cypher_guard_invariant_symbol(name, npub, dpop_token, symbol_fqn)

Register a symbol an invariant guards. Required: name, symbol_fqn.

cypher_index_symbol(lang, npub, repo_name, dpop_token, symbol_fqn)

Index a code symbol as belonging to a service. Required: lang, repo_name, symbol_fqn.

cypher_invariant_provenance(name, npub, dpop_token)

Explain an invariant and what it guards. Required: name.

cypher_issue_provenance(npub, repo_name, dpop_token, issue_number)

Fetch an issue's GitHub URLs and provenance chain for browser click-through. Required: repo_name, issue_number.

cypher_link_capability_consumer(name, npub, dpop_token, consumer_repo)

Record that a service consumes a capability. Required: name, consumer_repo.

cypher_link_capability_to_patent(name, npub, dpop_token, patent_ref)

Ground a capability in a patent reference numeral. Required: name, patent_ref.

cypher_link_invariant_to_patent(name, npub, dpop_token, patent_ref)

Ground an invariant in a patent reference numeral. Required: name, patent_ref.

cypher_link_issue_to_capability(npub, repo_name, dpop_token, issue_number, capability_name)

Attach an issue to the capability it is about. Required: repo_name, issue_number, capability_name.

cypher_link_pr(npub, pr_url, repo_name, dpop_token, issue_number)

Attach the fix PR's GitHub URL to its issue. Required: pr_url, repo_name, issue_number.

cypher_link_root_cause(npub, repo_name, dpop_token, symbol_fqn, issue_number)

Point an issue at the code symbol that caused it. Required: repo_name, symbol_fqn, issue_number.

cypher_list_canonical_identities

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 is missing from the registry. The latter appear with ``registered: false`` (and in the top-level ``unregistered`` array) so Reconcile can flag deploy drift instead of silently reporting clean when a live tool was never seeded (#174). If the operator renames a function or rebrands a slug, the mcp_name in this output changes but tool_id stays. That's the whole point of the canonical-UUID design. Also diffs the live FastMCP wire surface against the registry. Tools exposed on the wire but absent from the registry appear in ``unregistered`` so Reconcile can flag deploy drift instead of silently under-reporting (issue #175). Free, no side effects.

cypher_list_capabilities(npub, since_ms, dpop_token)

List every capability for semantic intent-matching.

cypher_list_constraint_types

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_list_coupons(dpop_token)

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_list_invariants(npub, since_ms, dpop_token)

List every enforceable invariant.

cypher_list_issues(npub, since_ms, dpop_token)

List every triaged issue for the Issues register.

cypher_list_my_coupons(npub, dpop_token)

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``. Required: npub.

cypher_list_notarizations(limit, status)

List recent Bitcoin notarization records.

cypher_list_patent_elements(npub, since_ms, dpop_token)

List every filed patent reference numeral.

cypher_list_queries(npub, dpop_token)

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

cypher_mark_funding_state(url, kind, npub, state, number, repo_name, dpop_token)

Reflect an LLM-credit outage (or its clearance) in the intention graph. Required: url, kind, state, number, repo_name.

cypher_mark_invariant_contradiction(npub, name_a, name_b, reason, dpop_token)

Mark two invariants as contradictory. Required: name_a, name_b, reason.

cypher_mint_coupon(name, dpop_token, total_uses, valid_from, valid_until, uses_per_patron, discount_percent)

Create a new operator-owned discount coupon. Required: name, discount_percent, valid_from, valid_until.

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_note_rejection(npub, reason, repo_name, dpop_token, issue_number)

Record why the Porter rejected an issue. Required: reason, repo_name, issue_number.

cypher_oracle_about

Describe the DPYC ecosystem via the Oracle. Free.

cypher_oracle_get_tax_rate

Get the current DPYC certification tax rate. Free.

cypher_oracle_how_to_join

Get DPYC onboarding instructions from the Oracle. Free.

cypher_oracle_lookup_member(npub)

Look up a DPYC community member by npub. Free. Required: npub.

cypher_oracle_network_advisory

Get active network advisories from the Oracle. Free.

cypher_public_factory_stats

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 every page view. Safe for cold Bolt: failures return an empty available=false payload rather than raising.

cypher_publish_nostr_profile(npub, signed_event)

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_publish_tool(key, npub, dpop_token, tool_intent)

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_find_airline_flights(from_city, to_city)``). The tool is registered immediately but starts **unpriced** — it appears in Pricing Studio like any new tool; set its price there. Until priced, calls return "not priced yet (TBD)". Patrons then call it by name with typed params instead of ``execute_query_by_key``. The key must be a valid tool identifier (^[a-z][a-z0-9_]*$). Reconnect to see the new tool in the tool list. Required: key.

cypher_purchase_credits(npub, dpop_token, amount_sats)

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. Required: npub, dpop_token.

cypher_receive_credentials(service, dpop_token, sender_npub, credential_card)

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 popped DM with the wrong session phrase is deleted and its sender is NACK'd; the first DM with the matching phrase is accepted (ACK'd) and the scan stops. If none match, the queue is drained and a ``courier_not_found`` result is returned. Do NOT poll, loop, or retry. If a credential_card (ncred1...) is provided, it is redeemed directly without any relay access (dpop_token not required for that path). On success, the payment processor client is reinitialized from the new credentials — no server restart needed.

cypher_receive_npub_proof(dpop_token, patron_npub)

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 ONLY the pinned rendezvous relay that challenge was published on, stopping at the DM whose phrase matches. Mismatched DMs are deleted and NACK'd (without revealing the expected phrase). If called before the user replies, their message will never be found. Do NOT poll, loop, or retry. The signed DM itself proves npub ownership (the patron's nsec signed it). On success, returns the ``dpop_token`` — the same token. The calling application MUST remember it and pass it as the ``dpop_token`` parameter on every subsequent paid tool call. The proof (a hash of the token) is stored in the vault keyed by that hash — the MCP never stores the raw token itself. Free.

cypher_recent_activity(npub, since_ms, until_ms, dpop_token)

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

cypher_record_scope(npub, repo_name, dpop_token, issue_number, resolved_via, actionable_text)

Record the actionable spec and the code-location method for an issue. Required: repo_name, issue_number, resolved_via, actionable_text.

cypher_record_triage(npub, title, repo_url, issue_url, repo_name, dpop_token, disposition, issue_number, classification)

Record the Porter's triage of a GitHub issue. Required: title, repo_url, issue_url, repo_name, disposition, issue_number, classification.

cypher_redeem_coupon(code, npub, dpop_token)

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 existing redemption. Required: npub, code.

cypher_register_service(npub, repo_name, repo_npub, dpop_token)

Register a repo as a Service node in the factory graph. Required: repo_name, repo_npub.

cypher_report_issue(body, npub, title, tool_name, dpop_token)

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). The report is PUBLIC and goes to the maintainers' normal triage; nothing is verified here. Returns the filed issue's repo, number, and url. If this operator has not enabled field reports, returns an "issue reporting not configured" situation and you are not charged. Required: npub, dpop_token, title, body.

cypher_request_adoption(note, dpop_token, service_url, authority_npub)

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 ``adoption_status`` for progress; the operator flips to ``ready`` once the Authority provisions it. Required: authority_npub.

cypher_request_credential_channel(service, sender_npub)

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 with a credential template. The recipient must read the DM in their Nostr client, fill in the fields, and reply manually. **This is a human-in-the-loop flow.** After calling this tool, STOP and tell the user what to do. Wait for the user to confirm they have replied before calling ``receive_credentials``. Do NOT poll or retry — each ``receive_credentials`` call destructively drains the relay mailbox.

cypher_request_npub_proof(reason, verify_at, patron_npub)

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 client. **This is a human-in-the-loop flow.** After calling this tool, STOP and tell the user to check their Nostr client and reply to the challenge. Wait for the user to confirm they have replied before calling ``receive_npub_proof``. Do NOT poll or retry — each ``receive_npub_proof`` call destructively drains the relay mailbox. **Returns** a ``dpop_token`` — the demonstrated-proof-of-possession token that the calling application MUST remember and pass as the ``dpop_token`` parameter on every subsequent paid tool call. The MCP does not retain this value across restarts. **Lifecycle:** The cached proof expires after the patron's chosen duration. When it expires, call ``request_npub_proof`` again for a fresh challenge, then wait for the user, then call ``receive_npub_proof``. Free.

cypher_reset_pricing_model(dpop_token)

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_restore_credits(dpop_token, invoice_id, patron_npub)

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, patrons closing Top-Off sheets before settle, any infrastructure incident that left an invoice settled at BTCPay but uncredited on the operator's ledger. Idempotent — if the invoice is already credited (in the patron's ``credited_invoices``), returns success with credits_granted=0. Required: invoice_id, patron_npub, dpop_token.

cypher_restore_neon_schema(dpop_token)

Re-run ``ensure_schema()`` on every NeonVault this operator uses. Diagnostic / recovery tool for the case where the Neon HTTP SQL API is returning persistent 4xx errors and the operator suspects the schema isn't there or grants are wrong. Idempotent — uses ``CREATE TABLE IF NOT EXISTS`` so a successful re-run is harmless. Returns the per-step result. If any step raises, surfaces the Neon error message inline (0.31.0 reads the SQL error body that earlier wheels swallowed behind ``raise_for_status``). RESTRICTED to operator — requires proof (nsec-signed).

cypher_retire_funding_block(kind, npub, number, repo_name, dpop_token)

Retire a stale funding block to a historical record when its item closes. Required: kind, number, repo_name.

cypher_route_rejection(npub, reason, by_repo, dpop_token, origin_repo, origin_issue)

Route a target's rejection reason back to the origin issue. Required: reason, by_repo, origin_repo, origin_issue.

cypher_routing_history(npub, repo_name, dpop_token, issue_number)

Show which repos have declined an issue and why. Required: repo_name, issue_number.

cypher_service_provenance(npub, repo_name, dpop_token)

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

cypher_service_status

Check the health and configuration of this service. Free.

cypher_session_status(patron_npub)

Check operator readiness. Returns the operator lifecycle state and clear guidance on what to do next. Free. Lifecycle states: - ready: Operator is warm and fully operational — vault AND pricing model verified. Proceed with tool calls. - warming_up: Operator is initializing (cold start). Try a tool call — it will warm up on demand. - misconfigured: Persistence rejected a query with a permanent SQL error (permission denied, missing relation). Paid tools will fail until the operator repairs the database — retrying does not help. - quota_exceeded: The persistence provider (Neon) answered HTTP 402 — the operator's database has exhausted its compute/storage quota, so the books are locked for billing. Paid tools fail; retrying does NOT help. The operator's Authority must restore capacity (upgrade the plan or wait for the quota reset). Free tools remain available. - not_registered: Operator has no Authority relationship yet. Call register_operator first. - no_identity: Operator nsec is not configured. Deployment issue.

cypher_set_pricing_model(dpop_token, model_json)

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. Required: model_json.

cypher_suggest_capability_why(name, npub, dpop_token, inferred_why)

Offer the Journeyman's read on why a capability exists. Required: name, inferred_why.

cypher_symbol_provenance(fqn, npub, dpop_token)

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

cypher_symbols_in_service(npub, repo_name, dpop_token)

List a service's indexed symbols. Required: repo_name.

cypher_unpublish_tool(key, npub, dpop_token)

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. Required: key.

cypher_update_coupon(name, coupon_id, dpop_token, total_uses, valid_from, valid_until, uses_per_patron, clear_total_uses, discount_percent, clear_uses_per_patron)

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). RESTRICTED to operator — requires proof. Required: coupon_id.

cypher_update_operator_credential(field, value, dpop_token)

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 echoed back. RESTRICTED to the operator — requires proof (nsec-signed kind-27235 or a cached dpop_token phrase); patron proofs are rejected. Required: field, value, dpop_token.

cypher_update_patron_credential(npub, field, value, dpop_token)

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. Required: npub, dpop_token, field, value.

cypher_update_query(key, npub, row_limit, dpop_token, timeout_ms, access_mode, description, param_schema, cypher_template)

Operator-only: update an existing named Cypher query template. Same shape as create_query, but the key must already exist. Required: key, cypher_template.

cypher_upsert_capability(name, npub, keywords, dpop_token, owner_repo)

Record a cross-cutting service Capability and one of its owners. Required: name, keywords, owner_repo.

cypher_upsert_patent_element(ref, name, npub, figures, dpop_token, claim_family)

Record a patent reference numeral as a node. Required: ref, name, figures, claim_family.

cypher_what_realizes_capability(name, npub, dpop_token)

Find the symbols that implement a capability. Required: name.

cypher_which_service_handles(npub, keyword, dpop_token)

Find which service handles a given intent. Required: keyword.

Last successful function declaration observed on 2026-08-13. Source: https://cypher-mcp.fastmcp.app/mcp. We list what the server declared; we do not call any of these functions.

Endpoint status observed on 2026-08-13. Source: https://cypher-mcp.fastmcp.app/mcp.

Signals

These are separate measurements of different things. They are deliberately not combined into one score, because a popularity number that mixes website traffic with saves and stars cannot be checked or acted on.

Where to get it

• Repository — https://github.com/lonniev/cypher-mcp
• Remote endpoint (streamable-http) — https://cypher-mcp.fastmcp.app/mcp

Also from lonniev

• io.github.lonniev/excalibur-mcp
  FastMCP server for posting formatted content to X (Twitter) — Tollbooth-monetized, DPYC-native
• io.github.lonniev/optionality-mcp
  Optionality — AI-judged options trading drill, Tollbooth-monetized MCP server
• io.github.lonniev/personalbrain-mcp
  FastMCP server for TheBrain API — AI access to a personal knowledge graph, Tollbooth-monetized
• io.github.lonniev/schwab-mcp
  Multi-tenant FastMCP server for Charles Schwab brokerage data, monetized via DPYC Tollbooth
• io.github.lonniev/taxsort-mcp
  TaxSort — Tollbooth-monetized MCP server for personal tax transaction classification
• io.github.lonniev/tollbooth-authority
  Tollbooth Authority — Certified Purchase Order Service for DPYC operators
• io.github.lonniev/tollbooth-authority-newengland
  Tollbooth Authority New England — sub-regional certifier under North America
• io.github.lonniev/tollbooth-authority-northamerica
  Tollbooth Authority — North America regional certifier
• io.github.lonniev/tollbooth-sample
  Educational Weather Stats MCP Service — Tollbooth DPYC monetization sample