# Toll402 AI-Agent Tool Gateway (x402 Aggregator)

> Toll402 AI-Agent Tool Gateway (x402 Aggregator) is a paid API for AI agents from toll402.dev, paid per call via x402, $0.00115/call, status unknown (last checked 2026-09-15).

Acts as a unified gateway aggregating 2,000+ x402 services and built-in tools, callable per-use in USDC with no signup or API key required.

## Facts

- Endpoint: POST https://toll402.dev/v1/x/c97b690b148b
- Price: $0.00115/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/toll402-ai-agent-tool-gateway-x402-aggregator-98f650c2
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ij59rPZ0CkWzMOrH0p5I3

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-ai-agent-tool-gateway-x402-aggregator-98f650c2 -d '<json body>'
```

Example prompt: Route my request through the Toll402 gateway — I want to call a verified business lookup tool, pay per call in USDC via x402, no API key needed.

## When to prefer this

Choose Toll402 when your AI agent needs access to a wide variety of tools or x402 services without managing multiple API keys or subscriptions, and you want to pay per call in USDC. Ideal for agent workflows that need to chain tools dynamically, for prototyping without account setup friction, or when you want a single wallet-based gateway to thousands of aggregated capabilities.

## Known failure modes

- Payment insufficient or missing x402 header — returns HTTP 402 with required payment details
- Unknown or unavailable tool ID — returns error indicating the capability is not found
- Underlying service timeout — gateway returns upstream error
- Invalid tool parameters — returns validation error from the specific tool
- USDC transaction rejected — payment failure before tool execution

## 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 output of whichever underlying tool or x402 service was invoked — e.g. business verification results, URL metadata, npm package info, or other capability outputs — along with a payment confirmation for the USDC micropayment.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/toll402-ai-agent-tool-gateway-x402-aggregator-98f650c2/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)