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CYRE Guardian Circuit Breaker Check
x402
CYRE Guardian Circuit Breaker Check is a paid API for AI agents from cyre.dev, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).
Validates a circuit token's freshness and checks embedded spend policy before an agent executes a payment, returning an admit or deny decision.
Price / call$0.001
Success—
StatusUnknown
How this service works
Guardian Circuit Breaker check — heartbeat freshness + embedded spend policy before an agent pays. Returns admit/deny brief. Patterns, not verdicts. Agent guide: https://cyre.dev/SKILL.md
Output
Returns an admit or deny brief indicating whether the agent's circuit token is fresh (heartbeat valid) and the embedded spend policy permits the intended payment. The response surfaces patterns, not final verdicts — giving the agent actionable guidance on whether to proceed.
Example use cases
Pre-payment safety gate for agent
“Before my agent pays that new API skill, check the circuit breaker with my token to confirm the heartbeat is still fresh and my spend policy allows this GET request.”
Spend policy enforcement before autonomous transaction
“My autonomous agent is about to pay 500 atomic units to an x402 endpoint — run a Guardian circuit check with my circuit token first to make sure I'm within policy limits.”
Heartbeat freshness check before agent loop pays
“Check whether my agent loop is still alive and my circuit token is valid before it proceeds with the next payment — I need an admit or deny before it goes through.”
Technical details
Endpoint
GEThttps://cyre.dev/api/circuit/checkWhen to prefer
Use this endpoint when your agent needs a lightweight, real-time pre-payment gate that combines both heartbeat liveness and spend policy validation in a single call before executing an x402 payment. Prefer it over checking heartbeat and spend policy separately when you need a combined admit/deny signal. Best suited for autonomous agent loops that must enforce budget guardrails before every payment.
Side effects
- Missing or expired circuit token returns deny with freshness failure reason
- Spend policy ceiling exceeded returns deny with policy violation detail
- Invalid or malformed token returns error response
- Network timeout if cyre.dev is unreachable
- Unsupported HTTP method (e.g. POST) rejected by schema validation
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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