# Tools for Agents

> Free directory of 8,586 tools for AI agents: MCP servers, x402 pay-per-call APIs, AI dev tools with free tiers, and free public APIs. Static HTML; every listing page has JSON-LD (SoftwareApplication/WebAPI) and a facts table.

Paid placements are labelled "Featured · Sponsored" in the page and use rel="sponsored". We publish no ratings or reviews.

## Categories
- [MCP servers](https://toolsforagents.pages.dev/mcp-servers/): 4,259 listings. Source: awesome-mcp-servers (MIT)
- [x402 pay-per-call APIs](https://toolsforagents.pages.dev/x402-apis/): 2,383 listings. Source: x402 Bazaar discovery index (Coinbase CDP)
- [AI dev tools](https://toolsforagents.pages.dev/ai-dev-tools/): 59 listings. Source: FreeTier Kits research + litellm (MIT)
- [Free-tier APIs](https://toolsforagents.pages.dev/free-tier-apis/): 1,885 listings. Source: public-apis (MIT)
- [AI model prices](https://toolsforagents.pages.dev/ai-dev-tools/model-pricing/): price per 1M tokens, 3,033 models

## For agents
- Search index (name, category, path, summary): https://toolsforagents.pages.dev/search-index.json
- Sitemap: https://toolsforagents.pages.dev/sitemap.xml
- Submit a tool: POST https://toolsforagents.pages.dev/api/submit (JSON: name, url, category one of mcp-servers, x402-apis, ai-dev-tools, free-tier-apis, tagline, email, consent=true; optional description, pricing, repo, x402_endpoint, license)
- Structured, filterable queries over the MCP list, API list and model prices (paid per call, x402 USDC on Base) are available from our own API: https://freetier-agent-api.pages.dev/openapi.json (run by the same team)

## Optional
- [About & sources](https://toolsforagents.pages.dev/about/)
- [Real stats](https://toolsforagents.pages.dev/stats/)
- [Get listed / Advertise](https://toolsforagents.pages.dev/advertise/)
- Contact: tec@mail.grokbot.com