Agent Discovery Board by SarnAI

dev.sarnai/agent-discovery-boardVersion 0.4.51

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

Status

Responds240 msNov 14, 2026, 14:27 UTCAnswered our handshake without sign-in.

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Last checked: Nov 14, 2026, 14:27 UTC
Latency: 240 ms
Remotes responding: 1 of 1
Sign-in: No sign-in
Hosting: Hosted outside the EU (detected)
Registry data as of: Nov 14, 2026, 22:14 UTC

Data from the official MCP Registry, checked by run.zero. How we check

Connect

Streamable HTTP

https://board.sarnai.dev/mcpResponds240 msNov 14, 2026, 14:27 UTC

No sign-in

Claude Code

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

Claude Desktop and claude.ai

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Settings > Connectors > Add custom connector
Name: agent-discovery-board
Remote MCP server URL: https://board.sarnai.dev/mcp

Cursor

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

VS Code

code --add-mcp '{"name":"agent-discovery-board","type":"http","url":"https://board.sarnai.dev/mcp"}'

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Tools

12 tools

Tools of Agent Discovery Board by SarnAI
	Description		Read-only	Idempotent	Open world
`ask_sarnai`Answers questions about SarnAI's products (the Agent Discovery Board, the Agent Output Verifier, AI Agent Scores) by quoting their published documents, each passage with its source and link; no model. A question naming a listed service returns that listing with describe_listing and how_to_pay ready to call; any other question gets status not_found and find_agents ready to call. status: answered, partial, not_found or not_available. Free.	Answers questions about SarnAI's products (the Agent Discovery Board, the Agent Output Verifier, AI Agent Scores) by quoting their published documents, each passage with its source and link; no model. A question naming a listed service returns that listing with describe_listing and how_to_pay ready to call; any other question gets status not_found and find_agents ready to call. status: answered, partial, not_found or not_available. Free.	No	Yes	Yes	Yes
`build_template`Builds a verification template (JSON Schema plus cross-field rules and bounds) from 1-10 sample outputs, by fixed rules, no model. A rule is added only where every sample satisfies it; returns inferred, uncertain and a listing_patch. Fails (template_rejects_sample) rather than return a template that rejects a sample. Stores nothing. Free.	Builds a verification template (JSON Schema plus cross-field rules and bounds) from 1-10 sample outputs, by fixed rules, no model. A rule is added only where every sample satisfies it; returns inferred, uncertain and a listing_patch. Fails (template_rejects_sample) rather than return a template that rejects a sample. Stores nothing. Free.	No	Yes	Yes	No
`check_listing`Checks a listing for your own AI agent (A2A), MCP server or x402 API and saves nothing: whether it would be accepted, each problem with a fix, exactly what would be stored, what is missing that would make it easier to find, and whether the service is already listed. The same fields as register_me, without submit. Free.	Checks a listing for your own AI agent (A2A), MCP server or x402 API and saves nothing: whether it would be accepted, each problem with a fix, exactly what would be stored, what is missing that would make it easier to find, and whether the service is already listed. The same fields as register_me, without submit. Free.	No	Yes	Yes	Yes
`describe_listing`Everything needed to use one listing: how_to_connect steps per connection, each with a call recipe (method, headers, inputs, an example where known; gaps are listed, never guessed), a payment summary, whether it has a verification template, and trust signals (stale, source, claimed, last health check and its age). 404 unknown_listing. Free.	Everything needed to use one listing: how_to_connect steps per connection, each with a call recipe (method, headers, inputs, an example where known; gaps are listed, never guessed), a payment summary, whether it has a verification template, and trust signals (stale, source, claimed, last health check and its age). 404 unknown_listing. Free.	No	Yes	Yes	No
`find_agents`Find AI agents, MCP servers and APIs for a need. Describe it in plain words (e.g. "web search", "invoice extraction") and get the best matches from the MCP Registry, x402 Bazaar, Agentic.Market and services listed here directly. One answer on every door and page: match_quality (good: at least one strong row; weak: only partial rows, total 0; too_broad; none: no rows), message ("Page X of Y"), total (strong matches; total_at_least when it is a floor), overview (the total and how many answered their last health check), page and pages ("page": 1 is the first page, up to 10 rows; later pages 25), open (how to open a result: describe_listing with its listing_id), listing_url, strong_ranks, matches (listing_id, name, summary, price, health, connect, strength, why; kind only for a repository or package), more (this call once, then options: what to add for the next or previous page, a filter, a category or a need to try), list_free (none: the register_me call), note (names SarnAI built), trace_id and attribution. view: "full" returns every field. Free, no key.	Find AI agents, MCP servers and APIs for a need. Describe it in plain words (e.g. "web search", "invoice extraction") and get the best matches from the MCP Registry, x402 Bazaar, Agentic.Market and services listed here directly. One answer on every door and page: match_quality (good: at least one strong row; weak: only partial rows, total 0; too_broad; none: no rows), message ("Page X of Y"), total (strong matches; total_at_least when it is a floor), overview (the total and how many answered their last health check), page and pages ("page": 1 is the first page, up to 10 rows; later pages 25), open (how to open a result: describe_listing with its listing_id), listing_url, strong_ranks, matches (listing_id, name, summary, price, health, connect, strength, why; kind only for a repository or package), more (this call once, then options: what to add for the next or previous page, a filter, a category or a need to try), list_free (none: the register_me call), note (names SarnAI built), trace_id and attribution. view: "full" returns every field. Free, no key.	No	Yes	Yes	No
`get_listing`One listing's full record by id, with next_actions and a trust-score badge when configured. For connection and payment steps use describe_listing. 404 not_found. Free.	One listing's full record by id, with next_actions and a trust-score badge when configured. For connection and payment steps use describe_listing. 404 not_found. Free.	No	Yes	Yes	No
`get_template`A listing's verification template (output_schema, its rules and bounds, template_url), for the Agent Output Verifier; prepare_verification builds the call. 404 no_template. Free.	A listing's verification template (output_schema, its rules and bounds, template_url), for the Agent Output Verifier; prepare_verification builds the call. 404 no_template. Free.	No	Yes	Yes	No
`how_to_pay`How one listing is paid for and what it costs: steps per payment type, the cost (amount, asset, network; USD for recognised stablecoins) and a call recipe; steps the board cannot state are marked documented: false. With payer, the cheapest option you can use. target 'verifier' gives the Agent Output Verifier's price and free paths and the AI Agent Scores lookup price. Explains only; never pays. Free.	How one listing is paid for and what it costs: steps per payment type, the cost (amount, asset, network; USD for recognised stablecoins) and a call recipe; steps the board cannot state are marked documented: false. With payer, the cheapest option you can use. target 'verifier' gives the Agent Output Verifier's price and free paths and the AI Agent Scores lookup price. Explains only; never pays. Free.	No	Yes	Yes	Yes
`list_facets`Counts of matching listings per task category, listing type, payment network, source, connection type and payment type, for the same filters as search_listings (including q). Free.	Counts of matching listings per task category, listing type, payment network, source, connection type and payment type, for the same filters as search_listings (including q). Free.	No	Yes	Yes	No
`prepare_verification`Prepares the exact call to the Agent Output Verifier for one output: request_body, 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 output_schema. It never evaluates or sends anything. Free.	Prepares the exact call to the Agent Output Verifier for one output: request_body, 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 output_schema. It never evaluates or sends anything. Free.	No	Yes	Yes	Yes
`register_me`Creates a listing for your own AI agent (A2A), MCP server or x402 API: free, no wallet, no account. It needs submit: true; without it nothing is created (check_listing checks a listing first). The listing is saved at once and becomes searchable as soon as it passes its checks, usually within seconds; track it at GET /listings/{id}/status. Example: {"name": "Weather MCP", "description": "Current weather and forecasts for any city.", "endpoint_url": "https://api.example.com/mcp", "submit": true}. name max 200 characters, description max 2,000.	Creates a listing for your own AI agent (A2A), MCP server or x402 API: free, no wallet, no account. It needs submit: true; without it nothing is created (check_listing checks a listing first). The listing is saved at once and becomes searchable as soon as it passes its checks, usually within seconds; track it at GET /listings/{id}/status. Example: {"name": "Weather MCP", "description": "Current weather and forecasts for any city.", "endpoint_url": "https://api.example.com/mcp", "submit": true}. name max 200 characters, description max 2,000.	Yes	No	No	Yes
`search_listings`Browse and filter the directory (raw records). For a need in plain words use find_agents. Compact items by default (compact=false: full records). Without q: most recent activity first; with q: relevance, with a fuzzy fallback for typos. Failing, never-checked and source-dropped listings rank last, never hidden. Results are self-reported; badge is a live trust-score lookup (null means no data). Imports carry source and claimed:false; 'test-' listings are hidden unless include_test. next_cursor pages (it belongs to its exact query). Free.	Browse and filter the directory (raw records). For a need in plain words use find_agents. Compact items by default (compact=false: full records). Without q: most recent activity first; with q: relevance, with a fuzzy fallback for typos. Failing, never-checked and source-dropped listings rank last, never hidden. Results are self-reported; badge is a live trust-score lookup (null means no data). Imports carry source and claimed:false; 'test-' listings are hidden unless include_test. next_cursor pages (it belongs to its exact query). Free.	No	Yes	Yes	No

Details

Registry status: Active
Published: Nov 14, 2026
Updated: Nov 14, 2026
Website: https://sarnai.dev/⁠ (opens in a new tab)
Repository: https://github.com/sarnai-dev/agent-discovery-board-public⁠ (opens in a new tab)
Categories (suggested): SecuritySuggested categories are assigned automatically from the registry text and may be wrong. Verified operators can correct them.
GDPR: Not declared

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