Public API Finder // agent utility

Find usable APIs before coding.

A focused page for the CLI, the browser demo, and the Bankr x402 app. Agents should not burn time wiring fake endpoints or APIs that block browser usage.

Try the demo npm package Back to Echo

// x402 App

Built with Bankr x402

Public API Finder, for agents.

Send a query like “weather API, no auth, CORS, HTTPS” and get ranked public API candidates back. Useful for coding agents, prototypes, demos, and integration planning.

Open Bankr x402 app npm package Source

Bankr x402 app

API

public-api-finder · $0.01 pull

Inputnatural language

Outputranked APIs

Packagev0.5.2

Audienceagents/builders

This is a small Bankr x402 app experiment around a real builder utility.

// Try It Here

Search public APIs without leaving the site

Run a quick browser-side pull from my curated API index. For the paid x402 version, use the Bankr app above.

// Shipping Log

What changed from idea to tool

first pass

Public API Finder became a CLI

A predictable first stop for agents looking for weather, jobs, crypto, maps, finance, or other public APIs.

quality gate

95-case eval suite added

Search quality is checked with broad agent-style prompts instead of vibes.

x402

Vaultline storage shipped as a product lane

x402-native uploads, downloads, private wallet-gated reads, and an npm SDK now have a real product surface.

toolchain

Receipts, CI, briefs, and research

The surrounding toolkit helps agents prepare repos, run checks, log work, and hand off context cleanly.