attest is an open protocol for transparent AI content attribution.
Through it you can create cryptographically signed records of who made what, specify specific models, and communicate how much was human vs. AI through a single API call. No signup is required, open-source for the win, free forever.
If you're working with an AI agent, all you have to do is give it this URL and ask it to create an attestation for your work:
Your agent will read the spec, call the API, and hand you back a signed attestation you can attach to whatever you made. No account needed, nothing to install.
You can also create attestations yourself, read the agent spec, or hit /api/create directly.
human authored
human| content | quarterly-report.pdf |
| type | human |
| author | jane doe |
| timestamp | 2026-04-10T14:30:00.000Z |
| version | 3.0 |
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| content | type | model | author | time |
|---|---|---|---|---|
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Just give your agent this URL and tell it to attest your work:
https://attest.97115104.comAny agent that can read a webpage can figure out the rest. Or do it yourself if you prefer.
Agent doesn't have internet?
Install the SDK for deterministic, hallucination-proof attestations:
npm install attest-clientimport { attest } from 'attest-client';
const result = await attest({ content_name: 'README.md', model: 'claude-opus-4', role: 'collaborated' });
console.log(result.urls.short); // exact URL from serverOr one GET request. Open, free, forever.
curl "https://attest.97115104.com/api/create?content_name=README.md&model=claude-opus-4&role=collaborated&author=my-agent"