The real catalog of tools for AI agents

337 MCP tools with x402 micropayments on Base. $0.001/call. No signup, no API keys.

One-line x402 + Stripe payment middleware for MCP servers. The Stripe for the agent economy.

Hosted MCP endpoint — 46 tools + 300+ REST endpoints. Free tier, no API keys, no signup.

334 free developer tools for AI agents. No API key needed.

46 MCP tools + 300+ REST endpoints. Free tier, no API key. One-line install.

Verify signed x402 payments; treasury-scoped settlement is irreversible.

Free tools: x402 endpoint directory + probe, on-chain x402 demand signal, sudoku, API pricing.

Inspect and validate an x402 endpoint before an autonomous agent spends USDC.

Discover x402 APIs by capability, price & trust. Powered by x402Scout.

Preflight x402 payment compatibility with structured risk evidence and remediation guidance.

Measured x402 ecosystem data, facilitator reliability, and live endpoint checks.

Discover and quote x402-paid Base intelligence products.

Paid x402 MCP tool for stress-testing launch and marketing copy before publication.

Calibrated intelligence via x402 (USDC Base). ERC-8004 #84581: 272 payments, 49 wallets.

DeFi yields, staking routing, semantic research & security intel via x402 micro-payments on Base

Discover and call 2,000+ x402 machine-payable services through one graded API key + gateway.

~17 tools; HT packs $50/$100/$150. tools/list free; tools/call USDC Base x402. Not financial advice.

Checks x402 Bazaar resource listings against the public discovery catalog and flags drops.

Free agent discovery + paid x402 research (outline 0.01 / brief 0.02 USDC Base).

Discover x402 paid APIs and inspect fresh payment requirements before authorizing spend.