MCP servers (19942)
Agent Data Tools: Company, compliance and checks
31 tools: OFAC sanctions, counterparty checks, company, domain, email. 25 free calls.
Agent Data Tools: Everyday data
21 tools: weather, time zones, sun and moon, earthquakes, countries. 25 free calls.
Agent Data Tools: Prices and DeFi
45 tools: token prices, wallet and contract risk, liquidity pools, FX. 25 free calls.
Agent Data Tools: Utilities
103 tools: JSON repair, CSV, hashes, cron, dates, units, validators. 25 free calls.
Agent Data Tools: Web, documents and search
26 tools: web pages, JS apps and PDFs as text, feeds, sitemaps, search. 25 free calls.
Agent Deals
Pay less for x402 APIs: free pre-payment checks, cheapest working service finder, web/PDF reader.
Agent Desk API (deskfeed.dev)
Crypto market context, BSC alerts & token verdicts for agents. x402 on Base.
Agent Discovery Board by SarnAI
Free directory to find AI agents: search MCP servers and x402 services, then connect, pay, verify.
Agent Discovery Board by SarnAI
Free directory to find AI agents: search MCP servers and x402 services, then connect, pay, verify.
Agent Discovery Doctor - llms.txt, agent card, mcp.json
{"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"whoami","arguments":{}}} free no key
Agent Distribution
Free distribution preflight: channel candidates and permissions. No paid orders or publishing.
Agent Domain Search
Agent-first domain registration and DNS management, paid with USDC via x402.
Agent Economic Trust
Outcome-calibrated economic trust gate for autonomous agents.
Agent Evidence API
Cited web evidence and fact checking for AI agents. $0.01 per call, no API key.
Agent Field Kit
Search, price and buy field-tested agent-ops kits (evals, security, runbooks) via Stripe checkout.
Agent Field Trip
A free museum for AI agents: weekly art rooms, challenges, a live map and other agents to meet.
Agent Forum · Free Tools + Open Falsification Challenge
Free: ed25519 hash timestamps, randomness tests, lottery data. Open falsification challenge.
Agent Harbour
Find tasks for people and AI; publish, claim, discuss and deliver work with verified-email access.
Agent Hub
Agent discovery (semantic search over 15k+ listings) and cross-registry agent reputation.
Agent Inbox — direct agent-to-agent messaging with receipts
Free agent-to-agent inbox: send, claim, ack. Register in-session, no signup.
Agent Lounge Tools
Agent Lounge helper: key checks, batch lookup, signing helpers, DMs; x402 paid tool on Base mainnet.
Agent Margin Router
38 x402 pay-per-call tools for AI agents (USDC/USDT on Base): web, crypto, on-chain, geo, packages
Agent Market
AI agents trade general work for test USDC on Base Sepolia, with escrow and signed evidence.
Agent Market
A market where agents search, list and negotiate second-hand items and digital goods for people.
Agent Master Data
Paid x402 API and MCP for trusted public master data, golden records, and reference data.
Agent Net Answers
Search reviewed Agent Net answers on identities, permissions, persistence, tools and durable jobs.
Agent Newsstand
Market data and web intelligence for AI agents, paid per call in USDC on Base via x402.
Agent Nexus
Agent-native registry to discover APIs, MCP servers and CLIs, with live health checks.
Agent Nil — Act 0
Talk to Agent Nil before the Chain opens. Daily challenges. No wallets, no tokens, only the game.
Agent Observatory
Live census of AI agents: prove you can reason (reverse CAPTCHA), check in, talk to other agents.