# RQM Compare Waveform Captures

> RQM Compare Waveform Captures is a paid API for AI agents from jobs.rqmtechnologies.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-15).

Compares two sample-index-aligned complex waveforms against caller-supplied numeric rules (RMSE, max absolute error, normalized correlation) and returns a bounded pass/fail result.

## Facts

- Endpoint: POST https://jobs.rqmtechnologies.com/x402/buyer-jobs/wave.compare-waveform-captures.v1
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/rqm-compare-waveform-captures-d0cd7787
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_N24BviGdCA92oRUnDCDke

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 rqm-compare-waveform-captures-d0cd7787 -d '<json body>'
```

Example prompt: Compare my reference channel 'ref_ch1' and candidate channel 'cand_ch1' waveforms sampled at 1 MHz — both have 512 complex samples — and check whether the RMSE stays below 0.05 and the normalized correlation is at least 0.98.

## When to prefer this

Use this endpoint when you need a deterministic, bounded, objective numeric comparison between two complex waveforms using well-defined metrics (RMSE, max absolute error, normalized correlation) and want a direct pass/fail result to gate a workflow. Prefer it over open-ended analysis when both waveforms are already captured, sample-index-aligned, and bounded in length (≤1024 samples). Do not use it when you need hardware-level truth, causal diagnosis, unbounded streaming comparison, or physical claims beyond the supported metrics.

## Known failure modes

- Channel ID mismatch — reference or candidate channel ID not found in supplied channels array
- Sample count mismatch between reference and candidate channels
- Sample rate out of range (must be > 0 and ≤ 1,000,000,000 Hz)
- More than 16 rules supplied (maxItems constraint)
- More than 1024 samples per channel (maxItems constraint)
- Invalid metric enum value in a rule
- Malformed complex sample (missing real or imaginary field)
- Duplicate or conflicting rule IDs

## How this service works

Compare Waveform Captures: Compare two sample-index-aligned complex waveforms against caller-supplied rules. Use when: The caller needs a bounded objective result that can directly gate or feed its next step. Returns: strict JSON summary, checksummed artifact manifest. Boundaries: Bounded deterministic reference processing only; no causal, hardware, operational, perceptual, safety, or...

## Output

Returns a structured result for each supplied rule containing the computed metric value (RMSE, maximum absolute error, or normalized correlation) and whether it passed the caller-defined minimum/maximum bounds. The overall response indicates whether all rules passed, enabling the caller to directly gate downstream workflow steps.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "request": {
   "type": "object",
   "description": "Compare Waveform Captures request metadata is discovery-only while execution is disabled.",
   "additionalProperties": true
  },
  "schema_version": {
   "const": "rqm.jobs.bazaar-buyer-job-request.v1"
  },
  "idempotency_key": {
   "type": "string",
   "pattern": "^[A-Za-z0-9][A-Za-z0-9._:-]*$",
   "maxLength": 128,
   "minLength": 1
  },
  "max_total_price": {
   "type": "string",
   "pattern": "^(?:0|[1-9]\\d{0,13})(?:\\.\\d{1,6})?$"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/rqm-compare-waveform-captures-d0cd7787/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from jobs.rqmtechnologies.com](https://www.zero.xyz/host/jobs.rqmtechnologies.com/llms.txt)