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PopNx MCPMCP servers for people who use AI · explained in plain words

Dpyc Oracle

by lonnievversion 0.4.0i★ –iRuns in the cloud
Registry nameio.github.lonniev/dpyc-oracle

Install

Overview

Description from the maker (original English)

DPYC Social Contract community concierge — free MCP for membership, governance, and onboarding

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

Install

Pick the AI app you use, then copy the settings.

Before you install

You need

Which app do you use?

Pick your app above. We remember it, so next time the button says “Install in …”.

Works in Claude on the web, desktop and mobile:

  1. Open Settings → Connectors
  2. Press Add custom connector
  3. Paste the address below and press Add
  4. If it asks you to sign in, sign in with the maker
SettingsConnectors1+ Add2https://…3
https://dpyc-oracle.fastmcp.app/mcp

Run this in your terminal

claude mcp add --transport http dpyc-oracle https://dpyc-oracle.fastmcp.app/mcp

Open in Cursor

Or copy the settings yourself

Paste 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.

Open in VS Code

Or copy the settings yourself

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:

  1. Open ChatGPT on the web → Settings → Connectors (Apps)
  2. Press Create or Add (some plans need Developer mode under Advanced first)
  3. Paste the address below, give it a name and save
  4. If it asks you to sign in, sign in with the maker
SettingsConnectors1+ Create2https://…3
https://dpyc-oracle.fastmcp.app/mcp

Menu 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.

What it can do

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.

  • about

    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.

  • lookup_member

    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.

  • get_tax_rate

    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 transacti

  • economic_model

    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, co

  • get_rulebook

    Fetch the DPYC Social Contract governance document. Returns the raw markdown of GOVERNANCE.md from the dpyc-community repo.

  • how_to_join

    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.

  • who_is_first_curator

    Identify the First Curator (Prime Authority) of the Certification Chain. Returns the curator's npub, display name, and member record.

  • network_versions

    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.

  • network_advisory

    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.

  • how_to_add_authority

    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-registrat

  • service_status

    Diagnostic: report this service's software versions and runtime info. Free, unauthenticated. Use to verify deployment versions across the DPYC ecosystem.

  • list_services

    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-descri

  • lightning_wallets

    Lightning 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_relays

    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 ns

  • report_relay_failure

    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

  • resolve_authority_for

    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_service

    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``.

  • request_citizenship

    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 DPY

  • confirm_citizenship

    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. T

  • register_authority

    Register 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_operator

    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.

  • update_operator

    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 Author

  • deregister_operator

    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 t

  • register_advocate

    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 (

  • check_ban_status

    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

  • renounce_membership

    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.

  • initiate_ban_election

    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.

  • cast_ban_vote

    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.

  • publish_campaign

    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

  • list_campaigns

    List published pricing campaigns from the DPYC community. Optionally filter by operator or author npub.

  • get_campaign

    Retrieve a published pricing campaign.

Basic checksi

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

  • ✓ Pass

    Maker matches the repo

    The registry name was verified with the GitHub account lonniev, which owns the repo

  • … Not checked yet

    Still maintained

    We have not read this repo from GitHub yet

  • … Not checked yet

    Has a licence

    We have not read this repo from GitHub yet

  • ✓ Pass

    Endpoint responds

    Responded in 370 ms (HTTP 200)

  • – Not applicable

    Sign-in with OAuth

    No sign-in needed

  • ✓ Pass

    No hidden instructions in tool descriptions

    Read 31 tool descriptions and found no hidden instructions to the AI

Compared with others in Otheri

  • More stars than 0% of the other 18326 servers in this category
  • Published to the registry more recently than 71% of the other 18326 servers in this category
  • Basic checks equal to or better than 100% of the other 18326 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is Dpyc Oracle safe?

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.

What keys or codes does it need?

The registry does not list a required key, though some servers ask you to sign in on first use.

Does it run on my computer or in the cloud?

It runs in the maker’s cloud. Connect over the internet with nothing to install, but what you send passes through the maker’s servers.

Is it still maintained?

The GitHub repo last changed –, and the latest version (0.4.0) reached the registry 17 days ago.

Which apps can use it?

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.

What can I use instead?

In the same category: Spec Driven Development, Remote Desktop Commander, Signoff

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README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

DPYC Oracle

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).

Available Tools

ToolParamsDescription
about()—Extended narration from repo docs (README + GOVERNANCE)
lookup_member(npub)npub: strLook 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: strThe 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: strBegin citizenship onboarding (issues challenge)
confirm_citizenship(npub, challenge_id, signed_event_json)npub: str, challenge_id: str, signed_event_json: strComplete 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: strRegister 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: strRegister 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: strRegister 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: strRemove 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: strCheck 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)
Stubbed (Future)
ToolDescription
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

Signed registry writes

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.

Citizenship Onboarding

New citizens can self-register via Schnorr signature verification:

  1. request_citizenship(npub, display_name) — issues a cryptographic challenge
  2. Sign the challenge with your Nostr nsec (offline, nsec never leaves your device)
  3. confirm_citizenship(npub, challenge_id, signed_event_json) — verifies signature and auto-commits

On 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.

Advocate Registration

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=...).

How to Connect

This service is hosted on Horizon. Add it to your MCP client configuration:

{

"mcpServers": { "dpyc-oracle": { "url": "https://dpyc-oracle.fastmcp.app/mcp" } } }

Related Repos

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)

License

Apache-2.0

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