# x402 Agent Spend Recurrence Guard

> x402 Agent Spend Recurrence Guard is a paid API for AI agents from gpt55.558686.xyz, paid per call via x402, $0.012/call, status down (last checked 2026-09-04).

Evaluates an x402 payment quote or paid-tool call against spend caps, route allowlists, payTo/network expectations, spend history, and receipt evidence to return an allow/manual_review/deny decision.

## Facts

- Endpoint: POST https://gpt55.558686.xyz/v1/tools/x402-agent-spend-recurrence-guard
- Price: $0.012/call
- Payment: x402
- Status: down
- Last checked: 2026-09-04
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-agent-spend-recurrence-guard-f2c529e4
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_WGN73bV-bn1RGRGArrHbY

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 x402-agent-spend-recurrence-guard-f2c529e4 -d '<json body>'
```

Example prompt: Before you approve this x402 tool call to https://api.example.com/data costing $0.008 USDC on Base, check it against my daily budget of $2.00 USDC, max $0.012 per call, and make sure the payTo address is 0xABC...123 — I've spent $0.45 today and had no recent failures, and I have receipt ID rec_9f2a for the last payment.

## When to prefer this

Use this endpoint when an AI agent needs a deterministic, policy-based pre-authorization check before executing any x402 USDC micropayment — especially when enforcing spend caps, validating payTo/network integrity, maintaining spend ledgers, or integrating with MCP or Flowise orchestration frameworks. Prefer this over ad-hoc checks when you need structured audit trails and guard configs in a single call.

## Known failure modes

- Amount exceeds maxUsdcPerCall — returns deny decision
- Daily budget exhausted based on spentTodayUsdc — returns deny decision
- Service URL not in allowlist — returns deny decision
- payTo address mismatch with expectedPayTo — returns deny or manual_review
- Network mismatch with expectedNetwork — returns deny decision
- Receipt required but receiptPresent is false — returns manual_review
- Consecutive failure threshold exceeded — returns manual_review or deny
- Input payload exceeds 700,000 character limit — request rejected
- Missing required fields — validation error returned

## Output

Returns a structured decision object with an allow/manual_review/deny verdict, a spend ledger entry recording this call, MCP and Flowise guard configuration blocks, a runtime code snippet for enforcement, and a repeat-payment audit schema for compliance review.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-agent-spend-recurrence-guard-f2c529e4/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from gpt55.558686.xyz](https://www.zero.xyz/host/gpt55.558686.xyz/llms.txt)