# crates.io Crate Owners Lookup

> crates.io Crate Owners Lookup is a paid API for AI agents from clonecho.builda.company, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-14).

Returns the list of owners for a given crates.io Rust crate by name

## Facts

- Endpoint: POST https://clonecho.builda.company/x402/s/crates-owners
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/crates-io-crate-owners-lookup-3a1e301a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_l8YpSGpzRLHKqbQRzjUcS

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability crates-io-crate-owners-lookup-3a1e301a -d '<json body>'
```

Example prompt: Who are the owners of the 'tokio' crate on crates.io?

## When to prefer this

Use this endpoint when you need to programmatically look up the ownership or maintainer list for a specific Rust crate on crates.io, especially in agentic workflows that need to verify crate provenance, perform supply chain audits, or identify who controls a package.

## Known failure modes

- Crate name does not exist on crates.io — may return empty or error JSON
- Missing or malformed ?crate= query parameter — likely returns an error response
- Network or upstream crates.io API unavailability causing failure
- Payment not processed — x402 payment required before data is returned

## How this service works

Owners of a crates.io Rust crate {crate}. Query: ?crate= Returns JSON.

## Output

A JSON object listing the owners of the specified crates.io Rust crate, including owner usernames and associated metadata such as login handles or team names.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/crates-io-crate-owners-lookup-3a1e301a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from clonecho.builda.company](https://www.zero.xyz/host/clonecho.builda.company/llms.txt)