# Tenjin x402 Capability Router

> Tenjin x402 Capability Router is a paid API for AI agents from tenjin.sh, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-12).

Routes a task description to the best-matching x402 capability, returning its executable contract, argument schema, and advertised terms — without making any provider call or authorizing payment.

## Facts

- Endpoint: POST https://tenjin.sh/api/x402-router?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-12
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/tenjin-x402-capability-router-5affc2b7
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_TnXJxfV8gf8yQn-W0dPcj

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 tenjin-x402-capability-router-5affc2b7 -d '<json body>'
```

Example prompt: I need to find the right x402 capability to handle this task — look up which one fits best and return the executable contract and argument schema so I can review the terms before committing to anything.

## When to prefer this

Use this endpoint when an AI agent needs to dynamically discover and preview the best x402 capability for a task before committing to a provider call or payment. Prefer it over static tool registries or hardcoded API lists when the task type is unknown at design time, when you want to inspect argument schemas and pricing terms before authorizing spend, or when building agentic pipelines that need cost-aware, routing-first architecture. Not appropriate when you already know exactly which capability to call.

## Known failure modes

- No matching capability found for the task — returns empty or null capability
- Malformed conversation packet causes routing failure
- Task description too ambiguous to produce a confident routing decision
- Service unavailable or rate-limited at $0.001 USDC per call
- Returned capability terms may be stale if provider updated since last index

## How this service works

Pay once for one routing decision: send the task and a bounded conversation packet, receive the x402 capability that fits it with its executable contract, argument schema and advertised terms. No provider call is made and no provider payment is authorized. Agent guide: https://tenjin.sh/llms.txt

## Output

Returns the x402 capability that best fits the submitted task, including its executable contract (the signed x402 payment-ready descriptor), the argument schema (field names, types, and constraints expected by the capability), and the advertised terms (price, provider, scope). No provider is called and no payment is initiated or authorized.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/tenjin-x402-capability-router-5affc2b7/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from tenjin.sh](https://www.zero.xyz/host/tenjin.sh/llms.txt)