# Toll402 AI-Agent Tool Gateway

> Toll402 AI-Agent Tool Gateway 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).

Routes AI-agent tool calls to 2,000+ aggregated x402-compatible services, paying per call in USDC via x402 with no signup or API key required.

## Facts

- Endpoint: POST https://toll402.dev/v1/x/683043dfa1fe
- 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-94cf2606
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ET3xBDh74D3MgUptwcebA

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-94cf2606 -d '<json body>'
```

Example prompt: Use Toll402 to call a tool from the x402 marketplace — pay per call in USDC from my wallet, no API key needed — and fetch me the current weather for San Francisco.

## When to prefer this

Choose Toll402 when you need to access a wide variety of AI-agent tools or x402 services from a single gateway without managing separate API keys, accounts, or billing relationships — especially when operating in a crypto-native environment where USDC micropayments per call are preferable to subscription billing. Ideal for autonomous agents that need flexible, pay-as-you-go access to 2,000+ aggregated capabilities.

## Known failure modes

- Insufficient USDC balance in wallet causes payment failure and 402 response
- Unknown or invalid capability identifier returns a routing error
- Underlying service is unavailable or returns its own error code
- Network timeout from the downstream x402 service
- Malformed request body causes a 400 validation error from the gateway

## 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 response from the underlying x402-compatible tool or service that was invoked, which may include structured data, text output, lookup results, or enrichment data depending on which capability was routed through the gateway.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/toll402-ai-agent-tool-gateway-94cf2606/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)