# x402helper.xyz Discovery

> x402helper.xyz Discovery is a paid API for AI agents from x402helper.xyz, paid per call via x402, $0.0017/call, status unknown (last checked 2026-10-21).

Accepts a natural-language task or list of sub-tasks and returns a set of x402 API routes that together fulfill the request, along with a total price estimate.

## Facts

- Endpoint: POST https://x402helper.xyz/discovery?utm_source=zero.xyz
- Price: $0.0017/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402helper-xyz-discovery-929660ed
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_eYyIonRupMxoLlo7VCDgr

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 x402helper-xyz-discovery-929660ed -d '<json body>'
```

Example prompt: I need to screen a wallet address, look up some patent data, and find US court cases involving a company — can you figure out which x402 APIs I should call for all three tasks and tell me the total estimated cost?

## When to prefer this

Use this endpoint when an AI agent needs to dynamically discover which x402 APIs to call for a given task, especially for multi-step workflows where the right combination of endpoints is not known in advance. Prefer it over hardcoded routing when tasks are described in natural language or when you want an upfront cost estimate across multiple API calls.

## Known failure modes

- Task description is too vague to match any routes — returns empty route set
- No x402 APIs available that match the requested capability
- Ambiguous sub-tasks result in overlapping or redundant route suggestions
- Price estimate may be stale if underlying endpoint pricing has changed
- Natural language parsing fails on highly technical or domain-specific requests

## Output

A list of x402 API routes (URLs, methods, and descriptions) that collectively address the submitted task or sub-tasks, along with a total price estimate in USDC for executing all identified routes.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402helper-xyz-discovery-929660ed/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402helper.xyz](https://www.zero.xyz/host/x402helper.xyz/llms.txt)