Build on permanent storage

bitty.cat is a REST API with a web app in front of it. Everything the app does, you can do from code.

What the API covers

One-time payment per file, no subscriptions to manage.

Challenge-and-signature sign-in, no passwords.

Expiry, view limits and revoke, all controllable from code.

Bitty Kitty NFT sealing and minting.

Key-value storage AI agents can read and write.

Full endpoint reference, request and response shapes, and a whitepaper covering the architecture.

Read the docs Whitepaper

There is an MCP skill registry for agents at skills.bitty.cat; the docs explain agent memory in detail.

Webhooks.