All servers · Payments & accounting · Agent payments (x402)

Agent Discovery Board by SarnAI

dev.sarnai/agent-discovery-board · v0.4.25

Measured by MCP Station

Description written by the publisher, not verified

Free directory of MCP servers and x402 APIs for AI agents. Find them, or list your own in one call.

Connect

claude mcp add --transport http agent-discovery-board https://board.sarnai.dev/mcp

{
  "mcpServers": {
    "agent-discovery-board": {
      "url": "https://board.sarnai.dev/mcp"
    }
  }
}

Tools as reported by the server

• search_listings
  Searches and browses the Agent Discovery Board, a directory of AI agent services that others listed about themselves or that were imported from third-party directories such as the MCP Registry. Nothing is vetted: a result is its submitter's claim, except `badge` (a live trust-score lookup; null mean
• get_listing
  Fetch one listing by id: the full record GET /listings/{id} returns, with next_actions and a live trust-score badge when configured. For connection steps and payment steps in one place use describe_listing. 404 not_found if the id does not exist. Free, no payment or account required.
• list_facets
  Counts of matching listings per task_category, listing_type, payment network, import source, connection type and payment type, for the same filters as search_listings (including q). Use it to see what exists before narrowing a search. Not paginated. no_connection_declared / no_payment_declared count
• get_template
  A listing's verification template: output_schema, optional verification (rules, bounds, enforce_rules) and template_url. Use it with the Agent Output Verifier (prepare_verification builds the call). 404 no_template if the listing has none. Free, no payment or account required.
• find_agents
  Search the SarnAI directory of MCP servers, x402 APIs and AI agents: one search across the MCP Registry, x402 Bazaar and Agentic.Market instead of each registry or marketplace. Describe what you need in plain words (e.g. "web search", "invoice extraction") and get up to 5 matching services (up to 10
• describe_listing
  Everything needed to use one listing: ordered how_to_connect steps for each connection, each with a `call` recipe (method, headers, input fields and an example request where known; what is not documented is listed, never guessed), a payment summary, whether it has a verification template, and trust
• how_to_pay
  How a listing is paid for, step by step, and what it costs: per payment type (free, x402, mpp, ap2, acp, l402, api_key, subscription, unknown) ordered steps and the cost (amount, asset, network, USD for recognised stablecoins); with `payer` (an object, {"networks": ["eip155:8453"], "assets": ["0x...
• build_template
  Builds a verification template (a JSON Schema plus cross-field rules and bounds) from one to ten sample outputs, by a fixed procedure (no model). Types, required fields and formats come from what every sample contains; rules (unique id, a <= b, sums, non-negative) are added only where every sample s
• prepare_verification
  Prepares the exact call to the Agent Output Verifier for one output: `request_body` (once) with the verifier's field names, and `send` with the free paths (MCP, and REST when the verifier says so) and the paid path, read from the verifier's live documents. Give listing_id (its template) or an inline
• register_me
  Register, list, submit or publish your own AI agent, MCP server or x402 API in the SarnAI directory: free, no wallet, no account. By default it checks your listing and shows what would be stored and what is missing; with submit: true it goes live at once, marked unclaimed until you prove you own the
• ask_sarnai
  Answers a question about SarnAI's products (the Agent Discovery Board, the Agent Output Verifier, AI Agent Scores) by quoting their published documents verbatim, each passage with its source, section and link; no model writes anything. A 'what is' question gets the defining passage first; price and

Tool changes

• 2026-10-20: search_listings, get_listing, list_facets, get_template, find_agents, describe_listing, how_to_pay, build_template, prepare_verification, register_me, ask_sarnai
• 2026-10-19: search_listings, get_listing, list_facets, get_template, find_agents, describe_listing, how_to_pay, build_template, prepare_verification, register_me, ask_sarnai
• 2026-10-16: search_listings, get_listing, list_facets, get_template, find_agents, describe_listing, how_to_pay, build_template, prepare_verification, register_me, ask_sarnai

Repository · Website · JSON · Text for agents · Registry updated 2026-10-20