# 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 services and built-in capabilities through a single gateway, billed per call in USDC via HTTP 402

## Facts

- Endpoint: POST https://toll402.dev/v1/x/616c2e645194
- 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-3e8f6044
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_-hx5iydkzBGIH10z_Bf2d

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-3e8f6044 -d '<json body>'
```

Example prompt: Route this tool call through Toll402's gateway — I need to access a verified capability from their aggregated x402 marketplace and pay per call in USDC, no API key or signup needed.

## When to prefer this

Choose Toll402 when your AI agent needs access to many different tools or services without managing separate API keys, accounts, or billing relationships for each. Ideal when you want a single USDC wallet and x402 payment flow to cover all agent tool calls across a large marketplace of capabilities. Prefer over direct API integrations when the overhead of individual service registration outweighs the cost of per-call gateway fees.

## Known failure modes

- Insufficient USDC balance causes 402 payment failure
- Requested capability not found in aggregated marketplace returns 404
- Downstream service timeout propagates as gateway error
- Invalid x402 payment header format causes authentication rejection
- Requested tool temporarily unavailable causes 503 from underlying provider

## 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

The agent receives the response payload from the dispatched tool or service — which varies by the underlying capability invoked — along with any payment confirmation metadata from the x402 transaction. The response reflects whatever the routed service returns (data lookup result, generated content, validation outcome, etc.).

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/toll402-ai-agent-tool-gateway-3e8f6044/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)