# POSIX Condition Wait Mutex Reacquire Trace Analyzer

> POSIX Condition Wait Mutex Reacquire Trace Analyzer is a paid API for AI agents from detect.halowerk.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-11-04).

Analyzes and traces POSIX condition variable wait operations, returning exact condition-wait release, notification membership, dynamic mutex binding, and reacquire-before-return/cleanup state from an explicitly scheduled anonymous concurrent runtime fixture.

## Facts

- Endpoint: POST https://detect.halowerk.com/v1/F-A-NIGHT-OS-CONDITION/posix-condition-wait-mutex-reacquire-trace?utm_source=zero.xyz
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-11-04
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/posix-condition-wait-mutex-reacquire-trace-analyzer-b7fa7249
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_-_ZE93rMGQrvIJWrs34DC

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 posix-condition-wait-mutex-reacquire-trace-analyzer-b7fa7249 -d '<json body>'
```

Example prompt: Trace the POSIX condition wait and mutex reacquire behavior for a concurrent fixture with 4 threads, 2 mutexes, 3 conditions, claim value 42, and the following event arrays: [[1,2],[3,4],[5,6]] — I need to know the exact release state, notification membership, mutex binding, and reacquire-before-return state.

## When to prefer this

Use this endpoint when you need deterministic, offline-compatible tracing of POSIX pthread condition variable wait semantics including exact mutex reacquire sequencing, notification membership, and cleanup state — especially for concurrent runtime fixture authoring, OS-level synchronization debugging, or formal verification of condition-wait correctness where dynamic mutex binding must be explicitly confirmed.

## Known failure modes

- Invalid claim value outside allowed range (-1000000000000 to 1000000000000) returns validation error
- Event arrays exceeding 512 items or containing out-of-range numbers return schema rejection
- Missing required fields (claim, conditions, events, mutexes, threads) returns 400 bad request
- Payment of 0.003 USDC not provided via x402 protocol results in 402 Payment Required
- Malformed nested artifact/condition_wait structure returns parsing error

## How this service works

An offline concurrent-runtime fixture author needs exact condition-wait release, notification membership, dynamic mutex binding and reacquire-before-return/cleanup state from an explicitly scheduled anonymous trace.

## Output

Returns the exact condition-wait release state, notification membership details, dynamic mutex binding information, and reacquire-before-return or cleanup state derived from the submitted concurrent runtime fixture trace with the specified thread, mutex, condition, and event configuration.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "artifact": {
   "type": "object",
   "required": [
    "condition_wait"
   ],
   "properties": {
    "condition_wait": {
     "type": "object",
     "required": [
      "claim",
      "conditions",
      "events",
      "mutexes",
      "threads"
     ],
     "properties": {
      "claim": {
       "type": "number",
       "maximum": 1000000000000,
       "minimum": -1000000000000
      },
      "events": {
       "type": "array",
       "items": {
        "type": "array",
        "items": {
         "type": "number",
         "maximum": 1000000000000,
         "minimum": -1000000000000
        },
        "maxItems": 512
       },
       "maxItems": 512
      },
      "mutexes": {
       "type": "number",
       "maximum": 1000000000000,
       "minimum": -1000000000000
      },
      "threads": {
       "type": "number",
       "maximum": 1000000000000,
       "minimum": -1000000000000
      },
      "conditions": {
       "type": "number",
       "maximum": 1000000000000,
       "minimum": -1000000000000
      }
     },
     "additionalProperties": false
    }
   },
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/posix-condition-wait-mutex-reacquire-trace-analyzer-b7fa7249/health.json
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