io.
by lonniev · remote · no sign-in to list tools · v0.4.0 · published by GitHub user lonniev
DPYC Social Contract community concierge — free MCP for membership, governance, and onboarding
Deletes · 1Final · 1Changes · 14
30 tools: 1 can delete or cancel things, 1 do something that can't be undone, 14 change things and 14 only read.
Scanned Oct 21, 2026
- Deletes or cancels1Claude Code: deny: see these tools
- Can't be undone1Claude Code: ask: see these tools
- Changes things14Claude Code: ask: see these tools
- Only reads14Claude Code: allow: see these tools
1 check matched something in the tool definitions. No finding is not a safety guarantee. How the checks work.
claude mcp add --transport http dpyc-oracle https://dpyc-oracle.fastmcp.app/mcpFindings
Matches of fixed checks, with the text they matched.
The description mentions "credential".
What this check looks forMatched text
description: "...n + BTCPay + Horizon deployment, BTCPay credential delivery via Secure Courier, the self-r..."
Tools
Open a tool for its reasons and full description. Descriptions are the publisher's own words, shown as they are.
30 tools
Deletes or cancels 1Claude Code: deny
deregister_operatorRemove an Operator from the DPYC community registry.No findings
Why it is in this group
- The description's first verb is "remove": a word for removing or ending something.
Description, as the server wrote it Remove an Operator from the DPYC community registry. Called by an Authority when the operator leaves it or the Authority disowns the operator; the request must be signed with the Authority's key. An Operator cannot exist without a sponsoring Authority, so deregistration removes the member file entirely, returning the Operator to initial state.
Can't be undone 1Claude Code: ask
publish_campaignPublish a pricing campaign to the DPYC community.Can send data outNo findings
Why it is in this group
- The name "publish_campaign" says "publish": a word for a change that another call does not undo.
What it can reach
- outboundThe name "publish_campaign" says "publish": it sends or publishes something to other people.
Description, as the server wrote it Publish a pricing campaign to the DPYC community. Commits both a machine-importable JSON file and a human-readable Markdown summary to the dpyc-community campaigns directory. The request must be signed with ``author_npub``'s key (NIP-98), so a campaign is published only under its author's own name.
Changes things 14Claude Code: ask
aboutExtended narration about DPYC, the Social Contract, and the Oracle.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
Description, as the server wrote it Extended narration about DPYC, the Social Contract, and the Oracle. Fetches README.md and GOVERNANCE.md from the dpyc-community repo and assembles a comprehensive context answer.
cast_ban_voteCast a Lightning-funded vote in an active ban election.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
Description, as the server wrote it Cast a Lightning-funded vote in an active ban election. Not yet implemented — will verify npub membership, validate the election is active, and record the vote with a Lightning payment proof.
confirm_citizenshipComplete the citizen registration by submitting a signed Nostr event.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
Description, as the server wrote it Complete the citizen registration by submitting a signed Nostr event. This is part of the **citizen** registration flow (Operator-owned). The Operator calls this on behalf of a patron after the patron has signed the cryptographic challenge from request_citizenship. Verifies: 1. The challenge exists and hasn't expired 2. The Schnorr signature is valid 3. The event's pubkey matches the claimed npub 4. The event content contains the issued nonce 5. The npub is not already registered On success, commits directly to dpyc-community/members/citizens/{npub}.json to register the new Citizen immediately.
how_to_add_authorityEnd-to-end guide for spinning up a new Tollbooth Authority.1 finding
Why it is in this group
- The name "how_to_add_authority" says "add": a word for a change.
Findings
- Info
The description mentions "credential".
What this check looks forMatched text
description: "...n + BTCPay + Horizon deployment, BTCPay credential delivery via Secure Courier, the self-r..."
Description, as the server wrote it End-to-end guide for spinning up a new Tollbooth Authority. Returns the eight-step procedure covering identity, region selection, GitHub workspace, dpyc-community registry entry, Neon + BTCPay + Horizon deployment, BTCPay credential delivery via Secure Courier, the self-registration challenge-response with the parent Authority, and pre-funding the cert-fee balance. Fetched live from docs/how-to-add-authority.md in the dpyc-community repo.
how_to_joinTier-specific onboarding guide for joining the DPYC Social Contract.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
Description, as the server wrote it Tier-specific onboarding guide for joining the DPYC Social Contract. Covers all five tiers: Citizen, Advocate, Operator, Authority, and First Curator. Includes Nostr keygen instructions and practical next steps.
initiate_ban_electionInitiate a community ban election against a member.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
Description, as the server wrote it Initiate a community ban election against a member. Not yet implemented — will create a GitHub Issue with a 72-hour discussion period and Lightning-funded economic voting.
register_advocateRegister a new Advocate in the DPYC community registry.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
Description, as the server wrote it Register a new Advocate in the DPYC community registry. Advocates are community utility services that provide shared infrastructure (e.g., OAuth2 callback collectors) but aren't monetized Operators or certification Authorities. The request must be signed with ``npub``'s own key (NIP-98): a service registers itself, and no one can register an npub they do not hold.
register_authorityRegister a new Authority in the DPYC community registry.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
Description, as the server wrote it Register a new Authority in the DPYC community registry. Called by an Authority service at the end of the onboarding protocol (after the candidate proves npub ownership and the Prime Authority approves). Commits a new ``members/authorities/{npub}.json`` file to dpyc-community on GitHub. The full Authority onboarding protocol is a 3-step Nostr DM challenge-response flow: 1. ``register_authority_npub(npub)`` — Authority sends DM challenge 2. ``confirm_authority_claim(npub)`` — verifies candidate DM, escalates to Prime 3. ``check_authority_approval(npub)`` — Prime approves, this tool is called
register_operatorRegister a new Operator in the DPYC community registry.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
Description, as the server wrote it Register a new Operator in the DPYC community registry. Called by an Authority service when its owner approves an operator's adoption request; the request must be signed with the Authority's key.
renounce_membershipCitizen self-removal from the DPYC Social Contract via automated PR.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
Description, as the server wrote it Citizen self-removal from the DPYC Social Contract via automated PR. Not yet implemented — will create a GitHub PR to remove the member from the registry.
report_relay_failureReport that a relay in the DPYC set was unreachable, and re-rank it.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
Description, as the server wrote it Report that a relay in the DPYC set was unreachable, and re-rank it. A report does not set a relay's rank. It asks the Oracle to measure that relay *now*, and the Oracle's own probe decides. A false or mistaken report therefore costs one probe and changes nothing — no caller can demote a healthy relay by asserting that it is down. Report only failures. Successes are far too frequent to be worth carrying, and a relay that works needs no announcement.
request_citizenshipBegin the citizen registration process (Operator-owned flow).No findings
Why it is in this group
- The name "request_citizenship" says "request": a word for a change.
Description, as the server wrote it Begin the citizen registration process (Operator-owned flow). This is the **citizen** registration path. Called by the Operator on behalf of a patron — invokes the Oracle directly. No Authority npub is required or consulted. The patron's npub is registered as a Citizen in the DPYC community. The npub provided here becomes the user's **patron identity** — the keypair they will use for credit purchases and service access across all Tollbooth-monetized services. Not to be confused with **operator** registration, which goes through the Authority via a Nostr DM delegation request. Issues a cryptographic challenge that the applicant must sign with their Nostr private key (nsec) to prove they own the claimed npub. The nsec never leaves the applicant's device. Returns a challenge_id, nonce, and signing instructions. The applicant signs a Nostr event containing the nonce and submits it via confirm_citizenship within 10 minutes.
update_operatorUpdate an existing Operator's registry entry.No findings
Why it is in this group
- The name "update_operator" says "update": a word for a change.
Description, as the server wrote it Update an existing Operator's registry entry. Used when an Operator moves to a new MCP endpoint, changes its display name, or needs to correct a registration. Called by an Authority when its owner approves the operator's update request; the request must be signed with that Authority's key.
who_is_first_curatorIdentify the First Curator (Prime Authority) of the Certification Chain.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
Description, as the server wrote it Identify the First Curator (Prime Authority) of the Certification Chain. Returns the curator's npub, display name, and member record.
Only reads 14Claude Code: allow
check_ban_statusCheck whether an npub is banned from the DPYC Social Contract.No findings
Why it is in this group
- The name "check_ban_status" says "status": a word for reading.
Description, as the server wrote it Check whether an npub is banned from the DPYC Social Contract. Looks up the member in the community registry and checks whether their status is "banned". Unknown npubs are not considered banned (they simply aren't members). Free, unauthenticated. Used by operators during the cold path (credit purchases) to enforce community bans.
economic_modelExplain the DPYC Social Contract economic model — qualitatively.No findings
Why it is in this group
- The description's first verb is "explain": a word for reading.
Description, as the server wrote it Explain the DPYC Social Contract economic model — qualitatively. Describes how value flows through the network: ad valorem certification fees, the cascade up the Certification Chain to the First Curator, and where the live numbers actually live. The Oracle quotes **no** rates, counts, or revenue figures — those belong to the Authorities' pricing models and the live registry, not to a docent. Free, unauthenticated.
get_campaignRetrieve a published pricing campaign.No findings
Why it is in this group
- The name "get_campaign" says "get": a word for reading.
Description, as the server wrote it Retrieve a published pricing campaign.
get_relaysReturn the DPYC Nostr relay set, best first.No findings
Why it is in this group
- The name "get_relays" says "get": a word for reading.
Description, as the server wrote it Return the DPYC Nostr relay set, best first. The single source of truth is ``dpyc-community/relays.json``. An Operator seeds its relay set from here at cold start (its only fixed dependency is this Oracle endpoint), then reads its own bootstrap config from Nostr using just its nsec — no direct GitHub access. That file is a curated *guess*: it says which relays are worth using, not which are up this minute. Relays that an operator reported and the Oracle then proved unreachable are moved to the back of the list; everything else keeps its declared order, and nothing is ever dropped. This call never probes anything — it is on every operator's cold-start path, so it stays a lookup. Ranking improves only when someone hits a dead relay and says so via ``report_relay_failure``. Report failures only; successes need no announcement. Free.
get_rulebookFetch the DPYC Social Contract governance document.Reads private dataNo findings
Why it is in this group
- The name "get_rulebook" says "get": a word for reading.
What it can reach
- private-dataThe description's first sentence says "fetch" and "document": it reads documents.
Description, as the server wrote it Fetch the DPYC Social Contract governance document. Returns the raw markdown of GOVERNANCE.md from the dpyc-community repo.
get_tax_rateExplain how Tollbooth certification taxation works.No findings
Why it is in this group
- The name "get_tax_rate" says "get": a word for reading.
Description, as the server wrote it Explain how Tollbooth certification taxation works. Taxation is ad valorem and **per-Authority** — there is no single network-wide number, and the Oracle deliberately quotes none. The actual fee is the Authority's own accounting, set in its pricing model and reported at transaction time. This tool is a docent: it explains the model and points to the live source. For the exact figure, query the relevant Authority's ``check_price`` for ``certify_credits``.
list_campaignsList published pricing campaigns from the DPYC community.No findings
Why it is in this group
- The name "list_campaigns" says "list": a word for reading.
Description, as the server wrote it List published pricing campaigns from the DPYC community. Optionally filter by operator or author npub.
list_servicesEnumerate the live DPYC service network with self-described summaries.No findings
Why it is in this group
- The name "list_services" says "list": a word for reading.
Description, as the server wrote it Enumerate the live DPYC service network with self-described summaries. Reads the member roster from the dpyc-community registry, then (when ``probe=True``) performs a lightweight MCP handshake against each member's public service endpoint to fetch that service's *own* self-description and tool inventory. Nothing about the services is hardcoded here — descriptions are authored by each service, and prices come from each Operator/Authority pricing model (call the service's ``check_price``). Resilient by design: per-service timeout, partial results, brief caching, and a registry-only fallback when an endpoint is asleep or unreachable. A sleeping service never breaks the listing. Free, unauthenticated.
lookup_memberLook up a member by their Nostr npub.No findings
Why it is in this group
- The name "lookup_member" says "lookup": a word for reading.
Description, as the server wrote it Look up a member by their Nostr npub. Can look up any role's npub — citizen, operator, or authority. Returns the full member record if found, or a not-found message.
network_advisoryGet current network deployment advisory.No findings
Why it is in this group
- The description's first verb is "get": a word for reading.
Description, as the server wrote it Get current network deployment advisory. Returns human-readable guidance on what changed recently, urgent upgrades, and actions operators should take. Fetched live from ADVISORY.md in the dpyc-community repo.
network_versionsGet current recommended versions of all Tollbooth components.No findings
Why it is in this group
- The description's first verb is "get": a word for reading.
Description, as the server wrote it Get current recommended versions of all Tollbooth components. Returns component versions, minimum compatibility, active protocols, and a short advisory summary. Data is fetched live from network-status.json in the dpyc-community repo.
resolve_authority_forResolve the certifying Authority for an operator npub.No findings
Why it is in this group
- The name "resolve_authority_for" says "resolve": a word for reading.
Description, as the server wrote it Resolve the certifying Authority for an operator npub. Returns the Authority's ``{npub, url, name}`` (from the operator's ``upstream_authority_npub``). Use this after bootstrap to learn — and verify — which Authority signed your config, without reading GitHub.
resolve_serviceResolve a DPYC service by ``name`` or ``npub``.No findings
Why it is in this group
- The name "resolve_service" says "resolve": a word for reading.
Description, as the server wrote it Resolve a DPYC service by ``name`` or ``npub``. Returns ``{npub, url, name, role, purchase_mode}`` where ``purchase_mode`` is the registry-topology fact ``"certified"`` or ``"direct"`` (not a price). Supply exactly one of ``name`` or ``npub``.
service_statusDiagnostic: report this service's software versions and runtime info.No findings
Why it is in this group
- The name "service_status" says "status": a word for reading.
Description, as the server wrote it Diagnostic: report this service's software versions and runtime info. Free, unauthenticated. Use to verify deployment versions across the DPYC ecosystem.
This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.
Exfil surface
Which tools read private data, which read text someone else can write, and which can send data out. One of each is a path a prompt injection can use.
No private-data, untrusted-input, outbound path in this server alone: no tool is tagged untrusted-input.
- Reads private data1
- Reads files, mail, messages, databases, secrets, calendars or repositories.
- Reads text others write0
- Brings in text someone else can write: web pages, inbound email, messages, issues and comments.
- Can send data out1
- Can carry data to people or systems: it sends, posts or publishes, or takes a recipient, channel or URL.
Other servers in the same agent add their own tools to these paths. Audit your whole setup to see them together.
Remote posture
What anyone on the internet sees at the remote endpoint: an anonymous initialize and tools/list, and the public OAuth metadata.
Looked at Oct 22, 2026, 15:19 UTC, unchanged since Oct 22, 2026. No credentials were sent and no tool was called. What is looked at.
- Reachable
- yes
- HTTP status of an anonymous initialize
- 200
- tools/list served without credentials
- yes
- Tools that change things, listed without credentials
- 16
- Protocol version
- 2025-06-18
- WWW-Authenticate on 401
- not observed
- resource_metadata in WWW-Authenticate
- none
- RFC 9728 protected resource metadata
- none
- Authorization servers
- none
- Legacy HTTP+SSE transport
- no
- Dynamic client registration
- not observed
- Client ID metadata documents
- not observed
- HighThe whole server
The endpoint served tools/list without credentials, and the list has 16 tools that change things (1 destructive, 1 irreversible, 14 write). Whether a call also works without credentials was not tested: tools are never called.
What this check looks forMatched text
https://dpyc-oracle.fastmcp.app/mcp: tools/list returned 30 tools to an anonymous client, including deregister_operator (destructive), publish_campaign (irreversible), about (write), how_to_join (write), who_is_first_curator (write) and 11 more
Install
Pinned to version 0.4.0. Values in angle brackets are yours to fill in.
claude mcp add --transport http dpyc-oracle https://dpyc-oracle.fastmcp.app/mcpRun in a terminal.
Claude Code permissions
Allow the reads, ask before a change or a way out, deny the deletes. Paste into .claude/settings.json.
{
"permissions": {
"allow": [
"mcp__dpyc-oracle__lookup_member",
"mcp__dpyc-oracle__get_tax_rate",
"mcp__dpyc-oracle__economic_model",
"mcp__dpyc-oracle__get_rulebook",
"mcp__dpyc-oracle__network_versions",
"mcp__dpyc-oracle__network_advisory",
"mcp__dpyc-oracle__service_status",
"mcp__dpyc-oracle__list_services",
"mcp__dpyc-oracle__get_relays",
"mcp__dpyc-oracle__resolve_authority_for",
"mcp__dpyc-oracle__resolve_service",
"mcp__dpyc-oracle__check_ban_status",
"mcp__dpyc-oracle__list_campaigns",
"mcp__dpyc-oracle__get_campaign"
],
"ask": [
"mcp__dpyc-oracle__about",
"mcp__dpyc-oracle__how_to_join",
"mcp__dpyc-oracle__who_is_first_curator",
"mcp__dpyc-oracle__how_to_add_authority",
"mcp__dpyc-oracle__report_relay_failure",
"mcp__dpyc-oracle__request_citizenship",
"mcp__dpyc-oracle__confirm_citizenship",
"mcp__dpyc-oracle__register_authority",
"mcp__dpyc-oracle__register_operator",
"mcp__dpyc-oracle__update_operator",
"mcp__dpyc-oracle__register_advocate",
"mcp__dpyc-oracle__renounce_membership",
"mcp__dpyc-oracle__initiate_ban_election",
"mcp__dpyc-oracle__cast_ban_vote",
"mcp__dpyc-oracle__publish_campaign"
],
"deny": [
"mcp__dpyc-oracle__deregister_operator"
]
}
}Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. A read that can send data out (it takes a URL, say) asks first too. It assumes the server is installed as dpyc-oracle. Review it before you use it.
Capability tags behind 2 rules
- mcp__dpyc-oracle__get_rulebook private-data
- mcp__dpyc-oracle__publish_campaign outbound