# 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 2026-11-02).

Aggregates 2,000+ pay-per-call AI agent tools and services accessible via a single gateway endpoint, billed in USDC per call using the x402 payment protocol on Base.

## Facts

- Endpoint: POST https://toll402.dev/v1/x/b74dbbb0630e?utm_source=zero.xyz
- Price: $0.00115/call
- Payment: x402
- Status: unknown
- Last checked: 2026-11-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/toll402-ai-agent-tool-gateway-3a44498a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_zFQbPffyXA92s3smRZldK

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-3a44498a -d '<json body>'
```

Example prompt: Use Toll402 to call any tool I need — look up a business in the verified directory, no API key required, just pay per call in USDC via x402.

## When to prefer this

Choose Toll402 when your AI agent needs to access a wide variety of tools and services without managing multiple API keys or subscriptions, and when you want to pay only per call in USDC via x402 micropayments. Ideal for agentic workflows that require dynamic tool selection across 2,000+ aggregated services with no upfront commitment.

## Known failure modes

- Insufficient USDC balance or failed x402 payment returns HTTP 402
- Unknown or unsupported tool identifier returns 404 or error payload
- Malformed request parameters cause 400 bad request
- Underlying third-party service unavailable causes downstream error
- Rate limiting or network timeout from aggregated service

## 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 the requested tool or service, which varies by the underlying capability invoked. Could include structured data, business records, enriched information, computation results, or other tool-specific payloads, all routed through the Toll402 gateway after successful x402 USDC micropayment on Base.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/toll402-ai-agent-tool-gateway-3a44498a/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)