# Toll402 Gateway — x402 Pay-Per-Call AI Tool Hub

> Toll402 Gateway — x402 Pay-Per-Call AI Tool Hub is a paid API for AI agents from toll402.dev, paid per call via x402, $0.00115/call, status unknown (last checked 2026-09-14).

Acts as an aggregated gateway routing AI-agent tool calls across 2,000+ services, paid per call in USDC via x402 with no API key required

## Facts

- Endpoint: POST https://toll402.dev/v1/x/9a4ce2aa08cb
- Price: $0.00115/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/toll402-gateway-x402-pay-per-call-ai-tool-hub-fc28b66b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_OIwPO2ihNvlTh_g2OS-Xa

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 toll402-gateway-x402-pay-per-call-ai-tool-hub-fc28b66b -d '<json body>'
```

Example prompt: Call the Toll402 gateway tool endpoint at /v1/x/9a4ce2aa08cb and get me the result — pay the $0.00115 USDC fee automatically via x402, no API key needed.

## When to prefer this

Choose this endpoint when you need access to a broad catalog of AI-agent tools without managing multiple API keys or accounts — especially when operating in a USDC/x402 payment context and want a single wallet and gateway to cover many capabilities.

## Known failure modes

- Insufficient USDC balance triggers HTTP 402 with payment details
- Unknown or invalid tool identifier returns 404 or routing error
- Upstream tool failure propagates as an error response
- Malformed request payload causes 400 bad request
- Tool temporarily unavailable returns 503

## How this service works

The OpenRouter for AI-agent tools: one gateway, one wallet, every capability. Built-in tools, forged tools, a global verified business directory and 2,000+ aggregated x402 services, all paid per call in USDC via x402 (HTTP 402). No signup, no API key.

## Output

Returns the structured response of whichever underlying tool or service was invoked through the gateway, along with any metadata from the routed capability; exact shape depends on the specific tool called.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/toll402-gateway-x402-pay-per-call-ai-tool-hub-fc28b66b/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from toll402.dev](https://www.zero.xyz/host/toll402.dev/llms.txt)