# Delx Circuit Breaker State

> Delx Circuit Breaker State is a paid API for AI agents from api.delx.ai, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-13).

Derives closed, open, or half-open circuit breaker state from failure counters and cooldown timing inputs

## Facts

- Endpoint: POST https://api.delx.ai/api/v1/x402/circuit-breaker-state
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/delx-circuit-breaker-state-d8ffab1d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_lZsrGJoPk9uumqJjS62HY

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 delx-circuit-breaker-state-d8ffab1d -d '<json body>'
```

Example prompt: Check whether the circuit breaker should be open, closed, or half-open — the dependency has had 6 consecutive failures, it opens after 5 failures, the cooldown is 30000ms, and it's been open for 35000ms already.

## When to prefer this

Choose this endpoint when you need a stateless, deterministic circuit breaker state evaluation with no server-side state management — ideal for agent workflows that track failure counters locally and need a reliable, cheap ($0.003 USDC) computation step before deciding whether to invoke a downstream dependency. Prefer this over building circuit breaker logic inline when you want a consistent, auditable machine-readable JSON result without managing state on a remote server.

## Known failure modes

- Missing required fields (e.g. consecutive_failures or open_after) may return a validation error
- Negative or non-numeric values for timing/count fields may cause an error response
- If cooldown_ms is 0 and breaker is open, half-open logic may behave unexpectedly
- Payment failure via x402 returns 402 before computation occurs

## How this service works

Derive closed, open, or half-open circuit state from failure and cooldown inputs — call when deciding closed/open/half-open from failure counters. Use before side effects when composing multi-step agent jobs—the same loyalty/workflow demand band agents already pay for on Bazaar, but fully local. Returns deterministic machine-readable JSON for $0.003 USDC via x402 on Base. Execution is first-party, local-only, stateless, and memory-only with no paid upstream, no input retention, and no claim of…

## Output

Returns a deterministic JSON object indicating the current circuit breaker state — one of 'closed', 'open', or 'half-open' — based on whether consecutive failures have met the open threshold and whether the cooldown period has elapsed since the breaker opened.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "open_after": {
   "type": "number",
   "description": "Failures required before the breaker opens."
  },
  "cooldown_ms": {
   "type": "number",
   "description": "Milliseconds the breaker stays open before half-open."
  },
  "open_for_ms": {
   "type": "number",
   "description": "How long the breaker has already been open."
  },
  "consecutive_failures": {
   "type": "number",
   "description": "Current consecutive failure count for the dependency."
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "state": "open",
  "schema": "delx/util-circuit-breaker-state/v1",
  "open_after": 5,
  "cooldown_ms": 1000,
  "open_for_ms": 200,
  "allow_request": false,
  "consecutive_failures": 5
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/delx-circuit-breaker-state-d8ffab1d/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.delx.ai](https://www.zero.xyz/host/api.delx.ai/llms.txt)