# theloopbreaker.com x402-Email Trust Verifier (Paid Lane)

> theloopbreaker.com x402-Email Trust Verifier (Paid Lane) is a paid API for AI agents from theloopbreaker.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15).

Validates an inbound email sender address, accountability bond, and x402 payment header, returning a signed routing recommendation (inbox/review/spam) with a cryptographic receipt.

## Facts

- Endpoint: POST https://theloopbreaker.com/api/x402/trust/email-verify
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/theloopbreaker-com-1fa1aa49
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_FXXEKVkp-xayBHFT79IID

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 theloopbreaker-com-1fa1aa49 -d '<json body>'
```

Example prompt: Check whether this inbound email from alice@example.com with her x402 payment header and accountability bond should go to inbox, review, or spam — I need the signed receipt for the bazaar.

## When to prefer this

Use this endpoint over the free /api/x402/email/verify endpoint when you need a cryptographically signed _x402 receipt alongside the routing recommendation, especially for bazaar callers or downstream agents that require verifiable proof of the verification. Prefer this when operating within the x402-Email Spec v0.1 ecosystem on Base mainnet and when auditability of the spam/inbox decision is required.

## Known failure modes

- Invalid or missing x402 payment header — payment not submitted or malformed
- Sender address not found or unresolvable — verification fails
- Accountability bond not present or insufficient on-chain — routed to spam
- Base mainnet RPC unavailable — service degraded or timeout
- Malformed request body — 400 error returned
- Payment amount insufficient ($0.01 USDC required) — request rejected

## How this service works

x402-Email Spec v0.1 verifier (paid lane). Validates a sender address, accountability bond, and x402 payment header from an inbound email and returns a routing recommendation (inbox | review | spam). Same input as the free public endpoint at /api/x402/email/verify; this lane adds a signed _x402 receipt for bazaar callers. Live on Base mainnet.

## Output

Returns a routing recommendation of 'inbox', 'review', or 'spam' based on the sender's email address, on-chain accountability bond, and x402 payment header validity. The paid lane additionally returns a signed _x402 receipt suitable for bazaar callers on Base mainnet.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object"
  },
  "output": {
   "type": "object"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/theloopbreaker-com-1fa1aa49/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from theloopbreaker.com](https://www.zero.xyz/host/theloopbreaker.com/llms.txt)