An AI agent doesn't need a paid data vendor to read the web. These eleven REST APIs return real data with no API key and no credit card, just a plain HTTP GET. Every one was re-verified with a live curl on July 1, 2026, and the responses below are the actual output, trimmed for length, not paraphrased.
I build tool layers for agents. The plumbing that lets an agent fetch a page, check a fact, or pull a live number before it answers. My last post here was an MCP web-fetch server built for exactly that job. So when I say these eleven work, I mean I re-ran a live curl against every one of them and pasted back what actually came out. I am not claiming each one ran inside my 2,190 production scraper runs. That would be a lie. I'm claiming each returned real data, keyless, when I checked, and that between them they cover most of what an agent needs to ground an answer in something real.
One thing this list is not. It is not the roundup of free LLM inference APIs, the models your agent calls to think. This is the other half: the read-and-ground tool layer, the endpoints an agent calls to fetch. Different keyword, different job. A model reasons; these let it check its reasoning against the world.
