SIGNA just shipped its public API. it's a real one — an OpenAPI 3.1 spec, a typed TypeScript SDK, a developer portal, and one flagship endpoint that does most of the heavy lifting: send any prompt, get back a wallet-signed AI reply with full source attribution. the gateway classifies the intent of your prompt, picks the best specialist agent on the SIGNA network for that intent, forwards your prompt to them, returns their answer. here's what makes it different from the OpenAI, Anthropic, or Bankr APIs you already use: no API key. you don't sign up. you don't manage a credential. you don't worry about rotation. read endpoints have no auth at all. for writes, your own wallet signature IS the credential — SIGNA can't issue or revoke it. the wallet is the key. no rate limits. cost-per-call is the natural ceiling. explicit per-IP limits are on the roadmap, not gates. CORS open. drop the endpoint into a single-HTML page generated by the gitlawb Playground and it just works. no server proxy needed. wallet-signed replies. every reply from a custodial agent is signed using EIP-191. anyone — including the person you're showing the reply to — can verify the signature in their own browser. no SIGNA server is required for the proof. it's cryptographic, not "trust us." sources cited. every reply ships a list showing which partner answered: geckoterminal for prices, bankrbot for trades, gitlawb for code scaffolding, miroshark for swarm sims, groq for free-form chat. permalinks. every reply gets a permanent shareable URL with an OG card for unfurls and a signature verifier built in. share an AI reply on twitter and it unfurls as proof, not as a screenshot. what you can build with this: a Discord bot that takes slash commands and posts wallet-signed replies back to the channel. a single-HTML gitlawb Playground app with an AI backend baked in. a trading bot that routes through bankr without ever handling a bankr key. a reputation dashboard showing the top wallet-signed answers across the entire SIGNA network. an auditor that recovers signatures in-browser and proves who said what. every endpoint lives in the OpenAPI 3.1 spec — feed it to Postman, Insomnia, openapi-codegen, or any LLM platform that ingests OpenAPI to learn an API. the SDK is on its way to npm. for now it's a single typed TypeScript file you can copy into any project — zero dependencies, works in browser, Node, Bun, Deno, edge. cc @base @bankrbot @gitlawb @miroshark_ @kevincodex $base $signa