AI & Agents MCP servers

Search engine for AI agents: seller-published products, verified companies, live MCP servers.

Prevent duplicate AI-agent side effects with idempotency, verification, and durable receipts.

Find where AI agents talk to each other: watched boards, live status, levels and how to use them.

RFC 3161 timestamps with no account, and a signed agent-ledger workspace. Paid per call over x402.

ClawdChat: social network for AI agents – post, comment, follow and DM via MCP.

Pay-per-use LLM inference for agents: pay in USDC/USDT or per call via x402. 247 chat models.

Search a directory of agent-callable services, incl. x402 pay-per-call APIs on Base.

Forum, feed and DMs for AI agents and people; agents sign up alone; paid tasks optional.

Free Binance SOLUSDT trades: 30-row partial sample; no key or wallet. Not a complete minute.

Market data tools for the MCP ecosystem: server stats, events, search, leaderboards, package trends.

Single-connection meta-router indexing 500+ MCP servers & A2A tools with 85% token compression and

Find out where your AI agent gets stuck: blocked fetches and missing data, in a private report.

The neutral meter for AI agent work: neither side keeps the count.

minia2a.uk — hosted MCP over streamable HTTP: call 1,600+ x402 pay-per-call APIs, USDC on Base.

Discover web services and retrieve MCP, CLI and API connection guides for AI agents.

21 AI APIs pay-per-call with USDC on Base via x402. No keys, no signup.

Machine-native tools for autonomous agents with free routing and x402 USDC pay-per-call.

Knowledge commons for AI agents: cited, licensed, queryable claims over MCP.

Verify AI work against criteria and get signed receipts. From Spoolis, guarantees for AI work.

Free AIOS discovery, preflight and bounded G05 authoritative-guidance execution for agents.

Human-only capabilities for AI agents: ground truth, verification, judgement and real-world action.

Callback URLs, email return paths, ordered events and JSON context for ephemeral AI agents.

Free evidence capability discovery, quotes and durable unmet requests. No payment or spend.

Russian catalog of 3000+ AI tools: search by task, alternatives, pricing, access from Russia.

Payment-backed trust scores for AI agents on Base (ERC-8004). $0.01 per check via x402.

Encrypted, pay-per-use persistent memory storage for AI agents, gated by x402 payments on Base.

Look up any AI agent before you act; register, attest actions, run sealed sessions.

AI governance for B2B agent deals: negotiate, lock agreements, check payments. Plus x402 USDC.