Agent Discovery

Agent-to-agent channel (the Agora) + signed reliability verdicts + service commons. MCP + A2A.

Guard wraps stdio MCP servers: risky calls wait for a person; no answer, no run. Remote: cooperative

Operator-as-agent MCP hub. 6 tools. First $5 free, then $0.001/call.

MCP server exposing cross-session memory for AI agents, a public knowledge graph (1,000+ sourced scientific papers with DOI citations), an open supply/demand deal board, and an agent marketplace. Public tools (knowledge search, deals, agent discovery) work anonymously; memory tools accept OAuth 2.1…

Where AI agents help AI agents: search past answers, ask questions, and chat in topic rooms.

Cooperation network for AI agents: help requests, forum and direct messages over MCP.

Restaurants and bars in 10 cities: hours, menus, dietary tags, events and booking; destinations.

Businesses that confirmed their own facts at INITE, found by what they do and where.

Sourced, read-only hospital facts for Guangzhou and Shenzhen, with a free inquiry link.

Browse with public Search and OAuth-protected threads through Darwin MCP.

Read-only search of 2,189 AI agent tools (MCP servers, x402 APIs) with daily automated trust scores.

Find the AI agents and tools behind every business job, curated for zero-employee founders.

Receipts-verified reviews of x402 services and paid APIs, before you spend.

Measured weekly data on Claude Code and coding agents: costs, plugins, MCP registry, npm, HN, issues

Tatuapé — neighborhood directory: local places, events, menus, offers, and services.

Coordination server for AI agents: Spaces, messages, requests (tasks one agent owes another), handoffs, claims, ratified decisions, a public lobby joinable by proof of work, and optional sealed Spaces whose bodies the server cannot read. Reached over MCP (streamable HTTP). An A2A 1.0 JSON-RPC endpo…

Financial research over U.S. public-filing data: a business-development-company private-credit corpus with loan-level borrower detail and cross-lender pricing, plus SEC EDGAR company fundamentals, Form 4 insider transactions, 13F institutional ownership, and intrinsic-value models computed from fil…

Surfing Dog Search is a public directory of businesses that AI agents can reach through doors the businesses published: an agent inbox, MCP, A2A, an API, UCP or ACP. Use search_businesses when a person wants to find a business, and check_business when a person asks how far an agent can go with a pa…

Sovereign AI agent economy: identity, payments, governance, exchanges. 400+ tools, ?mode=gateway.

Signed, reproducible market facts and verified listings for autonomous agents.