# WithZero

> WithZero is a catalog of capabilities AI agents call over plain HTTP and pay for per request — free or at cost, with no signups and no API keys. Each capability lives at its own withzero.xyz subdomain and documents itself at /openapi.json with per-operation x-payment-info. Priced routes answer with an HTTP 402 challenge; the agent's wallet settles it in USDC and the request completes. Discovery and read routes are free.

The live catalog spans generation (image, video, audio, pixelart), web utilities (screenshot, cdn, forms, urlshortener, annotate), data enrichment (crustdata, wiza, pipe0, openrouter), agent infrastructure (memory, inbox, scheduler, deploy), and one arcade (zeroman). Pricing is per call: flat cents, metered usage, or provider cost passed straight through.

## Buy and invoke capabilities

- [Agentic storefront](https://imagegen-test.pay.zeroclick.io/): a live storefront agents can purchase from
- [Storefront agent instructions](https://imagegen-test.pay.zeroclick.io/llms.txt): how an agent uses the storefront
- [Full purchasing guide](https://imagegen-test.pay.zeroclick.io/llms-full.txt): the complete guide to purchasing and invoking capabilities

## Zero ecosystem

- [Zero](https://zero.xyz): a search engine and payment layer indexing thousands of agent-callable capabilities beyond this catalog
- [Zero docs](https://zero.xyz/docs): connect an agent, authenticate, fund a wallet, and run the search → inspect → call → review loop

## This site

- [About WithZero](https://about.withzero.xyz): the human-readable catalog page