Spec Driven Development
MCP Server that facilitates spec-driven development workflows, not just Vibe Coding.
Description from the maker (original English)
DPYC Social Contract community concierge — free MCP for membership, governance, and onboarding
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We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.
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Works in Claude on the web, desktop and mobile:
https://dpyc-oracle.fastmcp.app/mcpRun this in your terminal
claude mcp add --transport http dpyc-oracle https://dpyc-oracle.fastmcp.app/mcpPaste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json
{
"mcpServers": {
"dpyc-oracle": {
"url": "https://dpyc-oracle.fastmcp.app/mcp"
}
}
}Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.
Paste into .vscode/mcp.json in your project
{
"servers": {
"dpyc-oracle": {
"type": "http",
"url": "https://dpyc-oracle.fastmcp.app/mcp"
}
}
}Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.
ChatGPT connects only to servers on the internet:
https://dpyc-oracle.fastmcp.app/mcpMenu names can differ slightly by plan and over time.
Your choice stays on this device in a cookie; no account needed.
These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.
Tool names and descriptions exactly as the server reported them on Nov 7, 2026. The maker wrote them, not us; we show them as plain text.
aboutExtended 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.
lookup_memberLook 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.
get_tax_rateExplain 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 transacti
economic_modelExplain 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, co
get_rulebookFetch the DPYC Social Contract governance document. Returns the raw markdown of GOVERNANCE.md from the dpyc-community repo.
how_to_joinTier-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.
who_is_first_curatorIdentify the First Curator (Prime Authority) of the Certification Chain. Returns the curator's npub, display name, and member record.
network_versionsGet 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.
network_advisoryGet 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.
how_to_add_authorityEnd-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-registrat
service_statusDiagnostic: report this service's software versions and runtime info. Free, unauthenticated. Use to verify deployment versions across the DPYC ecosystem.
list_servicesEnumerate 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-descri
lightning_walletsLightning wallets a newcomer can install to pay a Tollbooth invoice. Each comes with its App Store, Google Play and web links, a one-line description, whether it holds the keys for you, and whether it can buy bitcoin in the app. The order is how often a live web search mentions e
get_relaysReturn 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 ns
report_relay_failureReport 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
resolve_authority_forResolve 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``. 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``.
request_citizenshipBegin 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 DPY
confirm_citizenshipComplete 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. T
register_authorityRegister a new Authority in the DPYC community registry. The request must be signed with ``upstream_authority_npub``'s key, or with the key of a legitimate Authority whose own parent is that sponsor: that Authority runs the onboarding flow below, which registers only after the pa
register_operatorRegister 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.
update_operatorUpdate 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 Author
deregister_operatorRemove 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 t
register_advocateRegister 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 (
check_ban_statusCheck 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
renounce_membershipCitizen 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.
initiate_ban_electionInitiate 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.
cast_ban_voteCast 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.
publish_campaignPublish 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
list_campaignsList published pricing campaigns from the DPYC community. Optionally filter by operator or author npub.
get_campaignRetrieve a published pricing campaign.
We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 7, 2026
The registry name was verified with the GitHub account lonniev, which owns the repo
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Read 31 tool descriptions and found no hidden instructions to the AI
Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.
It passed 3 of 3 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.
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The GitHub repo last changed –, and the latest version (0.4.0) reached the registry 17 days ago.
Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. It connects by URL, so apps that accept remote MCP servers work too, such as ChatGPT in developer mode.
In the same category: Spec Driven Development, Remote Desktop Commander, Signoff
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Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi
MCP Server that facilitates spec-driven development workflows, not just Vibe Coding.
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Five gates that make an agent's 'done' provable: run them, read the verdict, audit the record.
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A free, unauthenticated MCP concierge service for the DPYC Social Contract. The Oracle answers questions about membership, governance, onboarding, and tax rates by reading the dpyc-community GitHub registry live. No credits, no Neon database, no Secure Courier, no payment or credentials required. Registry writes are the exception: each must come on a signed request (see Signed registry writes).
| Tool | Params | Description |
|---|---|---|
about() | — | Extended narration from repo docs (README + GOVERNANCE) |
lookup_member(npub) | npub: str | Look up a member by Nostr npub |
list_services(probe, kind) | probe: bool = True, kind: str = "all" | Enumerate the live service network from the registry, optionally MCP-handshaking each member for its own self-description and tool inventory |
get_tax_rate() | — | Explains per-Authority ad valorem certification taxation; quotes no rate of its own and redirects to the relevant Authority's check_price |
economic_model() | — | Qualitative model of how value flows up the Certification Chain (no hardcoded rates, counts, or revenue figures) |
get_rulebook() | — | GOVERNANCE.md content |
how_to_join() | — | Tier-specific onboarding guide |
how_to_add_authority() | — | End-to-end guide for spinning up a new Tollbooth Authority (fetched live from dpyc-community) |
who_is_first_curator() | — | First Curator's npub and record |
network_versions() | — | Current recommended component versions |
network_advisory() | — | Deployment advisory for operators |
service_status() | — | Runtime version diagnostics |
resolve_service(name, npub) | name: str = "", npub: str = "" | Resolve one service by name or npub (exactly one) to its npub, url, name, role and purchase_mode. Operators use this through the SDK's default_oracle_client() instead of reading GitHub |
resolve_authority_for(npub) | npub: str | The certifying Authority (npub, url, name) named by a member's upstream_authority_npub |
get_relays() | — | The DPYC Nostr relay set from dpyc-community/relays.json, best first; relays the Oracle proved unreachable move to the back, none are dropped |
report_relay_failure(relay, reporter_npub, signed_event, mode) | relay: str, reporter_npub: str, signed_event: str, mode: str = "unknown" | Report a relay in the DPYC set as unreachable. The event must be signed by reporter_npub; the Oracle then probes the relay itself and only its own probe re-ranks it |
request_citizenship(npub, display_name) | npub: str, display_name: str | Begin citizenship onboarding (issues challenge) |
confirm_citizenship(npub, challenge_id, signed_event_json) | npub: str, challenge_id: str, signed_event_json: str | Complete onboarding with signed Nostr event |
register_advocate(npub, display_name, service_name, service_url, service_description) | npub: str, display_name: str, service_name: str, service_url: str, service_description: str | Register a community utility service as an Advocate; the request must be signed with npub's own key |
register_authority(authority_npub, display_name, service_url, upstream_authority_npub) | authority_npub: str, display_name: str, service_url: str, upstream_authority_npub: str | Register a new Authority (called by onboarding flow) |
register_operator(operator_npub, display_name, service_url, authority_npub) | operator_npub: str, display_name: str, service_url: str, authority_npub: str | Register a new Operator. Called by the sponsoring Authority when its owner approves an adoption; the request must be signed with authority_npub's key |
update_operator(operator_npub, authority_npub, service_url, display_name) | operator_npub: str, authority_npub: str, service_url: str = "", display_name: str = "" | Update an existing Operator's registry entry (e.g. new MCP endpoint). Called by the Authority when its owner approves the operator's update request; the request must be signed with authority_npub's key |
deregister_operator(operator_npub, authority_npub) | operator_npub: str, authority_npub: str | Remove an Operator from the registry, when the operator leaves its Authority or the Authority disowns it. Called by the Authority; the request must be signed with authority_npub's key |
check_ban_status(npub) | npub: str | Check if an npub is banned |
publish_campaign(author_npub, operator_npub, campaign_json, campaign_name, campaign_markdown) | author_npub: str, operator_npub: str, campaign_json: str, campaign_name: str = "", campaign_markdown: str = "" | Publish a pricing campaign to the DPYC community; the request must be signed with author_npub's key |
list_campaigns(operator_npub, author_npub) | operator_npub: str = "", author_npub: str = "" | List published pricing campaigns, optionally filtered by operator or author |
get_campaign(author_npub, operator_npub, slug, format) | author_npub: str, operator_npub: str, slug: str, format: str = "json" | Retrieve a published pricing campaign (JSON or Markdown) |
| Tool | Description |
|---|---|
renounce_membership(npub) | Citizen self-removal via automated PR |
initiate_ban_election(target_npub, reason) | Start economic ban voting |
cast_ban_vote(election_id, vote, npub) | Lightning-funded ban vote |
register_operator, update_operator and deregister_operator change who the network trusts, so the Oracle takes them only from the Authority that sponsors the operator. The request must carry a NIP-98 signature (Authorization: Nostr , bound to the request's method, URL and body) made with the key of the authority_npub it names. An unsigned request, or one signed by any other key, is refused.
register_advocate and publish_campaign take the same NIP-98 signature, made with the key of the npub they write: an Advocate registers itself, and a campaign is published under its author's own npub. Anyone holding a key may do either; no one may do it in another npub's name.
Every other Oracle tool answers with no Authorization header at all.
Operators never call these tools themselves. An operator asks its Authority (request_adoption, update_operator or deregister_operator on the Authority), and the Authority makes the signed call here once its owner approves, or at once for a deregistration.
New citizens can self-register via Schnorr signature verification:
request_citizenship(npub, display_name) — issues a cryptographic challengeconfirm_citizenship(npub, challenge_id, signed_event_json) — verifies signature and auto-commitsOn success, the Oracle creates an individual member file at members/citizens/{npub}.json in dpyc-community. The CI workflow regenerates members/read-only-lookup-cache.json from the individual files.
Advocates are community utility services (e.g., OAuth2 collectors) that provide shared infrastructure but aren't monetized Operators. Registration is Oracle-mediated — no challenge-response needed:
register_advocate(
npub=" ", display_name="My Service", service_name="my-service", service_url="https://my-service.fastmcp.app", service_description="What the service does", )
The Oracle commits members/advocates/{npub}.json directly and updates members/read-only-lookup-cache.json, so the Advocate is discoverable at once. Peer MCP servers discover the service URL through this Oracle's resolve_service(name=...), which tollbooth-dpyc calls as default_oracle_client().resolve_service(name=...).
This service is hosted on Horizon. Add it to your MCP client configuration:
{
"mcpServers": { "dpyc-oracle": { "url": "https://dpyc-oracle.fastmcp.app/mcp" } } }
The authoritative, always-current roster lives in the registry — call list_services() / lookup_member() / network_versions() for live data. The stable source repos:
Core
Authorities (certification chain)
Operators
Advocates (shared utilities, unmonetized)
Apache-2.0