Overview
A free web search API for AI agents, funded by clearly labeled sponsored results.
freesea is a web search API your agents can call for free. Real results from an independent index, with domain filters, freshness controls and generous rate limits. No credit card, no trial clock.
What you get
| Endpoint | What it does |
|---|---|
POST /v1/search | Web search with filters, freshness and depth control |
POST /v1/fetch | Any page's main content as markdown |
POST /mcp | The same two capabilities as MCP tools |
GET /skill.md | Setup and usage instructions written for agents |
GET /openapi.json | OpenAPI 3.1 description of the whole surface |
The fastest way in
Hand your agent one line and let it set itself up:
You have an online search skill: read https://freesea.dev/skill.md (curl it if you can't browse) and follow its setup.It fetches the skill, asks whether you want MCP or plain HTTP, installs that, and starts searching. See Quickstart if you would rather wire it up yourself.
Why it is free
Search costs money on every call. freesea covers that with clearly labeled sponsored results — never by reordering organic ones. The whole contract is written down in Sponsored results.