Find a knowledge bundle for your agent
Explore bundles from public GitHub and live domains. Search, compare them in tabs and hand the root index.md to your agent.
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Submit your bundle
IndexNow protocol, free, no account. Bundles in public GitHub repositories need no submission: the sweep finds them.
- Publish the key
https://your-host/your-key.txtcontaining exactly the key: 8 to 128 characters of[a-zA-Z0-9-]. - Send host, key and bundle roots
The URLs of your
index.mdfiles: https, all on that host, up to 100 per request. - We answer 202: queued
The collector fetches the key file before reading any URL of yours. Nothing is published unless it matches.
Bundle changed? Send the URL again. Limits: 100 URLs per request, 200 per host per UTC day. Agents: POST /api/ping or the submit_bundles MCP tool.
Pricing
Start with the free allowance. Each option’s limits and price are listed below; charges are shown before you continue.
| What | Price |
|---|---|
| Search, bundle cards, statistics and submission | Free |
Want to sponsor or advertise here? Partnerships and sponsorship →
Frequently asked questions
Can I search concepts and read the original OKF file?
Yes. Search the indexed root excerpt, including listed concept names and summaries, and filter by concept count, declared root type, OKF version, repository language or license. Root excerpts are limited to 1000 characters; individual concept files and their tags are not indexed. Open a bundle and switch between Formatted and RAW. RAW fetches the original index.md with frontmatter directly from its publisher (256 KiB preview limit); if browser access is blocked, open the source link. MAT and OKF Index use the same list, filters and bundle cards, with independent search state.
What is an OKF bundle?
Open Knowledge Format is a directory of markdown files with YAML frontmatter that an agent reads whole, instead of parsing HTML. The root is an index.md carrying okf_version; the other files are the concepts it links. The spec is published by Google; this index is not the official registry and is not affiliated with it.
What does a bundle card tell me?
The card shows the declared OKF version, root type, available concepts and a link to the original. Only bundles whose root was read and declares okf_version are listed. Check the publisher's terms before reuse.
How do I get my bundle indexed?
Serve the bundle from a domain you control, publish a key file at https://your-host/your-key.txt and POST the bundle URLs to /api/ping with the host and the key — the IndexNow protocol. The answer is 202; the collector checks the key before reading any URL of yours.
My bundle changed. How does the index find out?
Send the same URL again with the ping. Re-sending puts the bundle back in line to be read again. Check the response before retrying.
What does it cost?
Nothing. Search, bundle cards, statistics and submission are free and need no account. The only limits are on submission: 100 URLs per request and 200 per host per UTC day.
Can I use it from an agent?
Yes. The catalogue at /api/ describes every route, /openapi.json has the spec, /llms.txt the guide, and there is an MCP endpoint with the same operations: search, bundle card, statistics and submission.
Can I sponsor, advertise or partner?
Yes. This product's placements, the suggested 30-day price and the proposal form are at /partners; we reply within 3 business days.