# RQM Phase Sensitive Inspection

> RQM Phase Sensitive Inspection is a paid API for AI agents from jobs.rqmtechnologies.com, paid per call via x402, $0.15/call, status unknown (last checked 2026-09-15).

Diagnoses phase, rotation, ordering, or convention differences between two quantum gate operations under a specified phase context (exact or ignore_global_phase).

## Facts

- Endpoint: POST https://jobs.rqmtechnologies.com/x402/buyer-jobs/phase-sensitive-inspection-v1
- Price: $0.15/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/rqm-phase-sensitive-inspection-a76e3e60
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_jLw72GX20_bzTMu0sfiWR

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-phase-sensitive-inspection-a76e3e60 -d '<json body>'
```

Example prompt: Can you inspect the phase difference between a reference RZ gate on qubit 0 with angle 1.5708 radians and a candidate S gate on qubit 0, using exact phase context?

## When to prefer this

Use this endpoint when you need to precisely diagnose whether two specific quantum gate operations differ by a global phase, relative phase, rotation convention, or qubit ordering — especially when working within the RQM gate IR and needing a typed, auditable work product. Prefer it over general circuit equivalence checks when your concern is specifically phase and convention at the single-gate level, not full circuit equivalence.

## Known failure modes

- Unsupported gate type provided (outside the declared enum of x, y, z, h, s, sdg, t, tdg, rx, ry, rz, cx, cz)
- Invalid target qubit count (fewer than 1 or more than 2 targets)
- Angle out of range (outside -2π to 2π)
- Physical-device phase claims attempted (not supported)
- Arbitrary circuit analysis attempted (not supported)
- Malformed idempotency_key format
- Insufficient payment or max_total_price mismatch

## How this service works

Phase Sensitive Inspection: Diagnose the phase, rotation, ordering, or convention difference between these supported... Use when: Use when a bounded request matches rqm.studio.phase-sensitive-inspection-request.v1 and the caller needs th... Returns: difference kind, angle delta, correction hint. Boundaries: Deterministic bounded local software evidence only; no QPU, provider, physical, formal-proof, certificati...

## Output

A structured diagnosis describing the phase, rotation, ordering, or convention difference between the reference and candidate quantum gate operations, typed according to the rqm.studio.phase-sensitive-inspection-request.v1 schema.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "request": {
   "type": "object",
   "title": "PhaseInspectionRequest",
   "required": [
    "reference",
    "candidate",
    "phase_context"
   ],
   "properties": {
    "candidate": {
     "type": "object",
     "title": "PhaseOperation",
     "required": [
      "gate",
      "targets"
     ],
     "properties": {
      "gate": {
       "enum": [
        "x",
        "y",
        "z",
        "h",
        "s",
        "sdg",
        "t",
        "tdg",
        "rx",
        "ry",
        "rz",
        "cx",
        "cz"
       ],
       "type": "string",
       "title": "Gate"
      },
      "targets": {
       "type": "array",
       "items": {
        "type": "integer"
       },
       "title": "Targets",
       "maxItems": 2,
       "minItems": 1
      },
      "angle_radians": {
       "type": "number",
       "title": "Angle Radians",
       "default": 0,
       "maximum": 6.283185307179586,
       "minimum": -6.283185307179586
      }
     },
     "additionalProperties": false
    },
    "reference": {
     "type": "object",
     "title": "PhaseOperation",
     "required": [
      "gate",
      "targets"
     ],
     "properties": {
      "gate": {
       "enum": [
        "x",
        "y",
        "z",
        "h",
        "s",
        "sdg",
        "t",
        "tdg",
        "rx",
        "ry",
        "rz",
        "cx",
        "cz"
       ],
       "type": "string",
       "title": "Gate"
      },
      "targets": {
       "type": "array",
       "items": {
        "type": "integer"
       },
       "title": "Targets",
       "maxItems": 2,
       "minItems": 1
      },
      "angle_radians": {
       "type": "number",
       "title": "Angle Radians",
       "default": 0,
       "maximum": 6.283185307179586,
       "minimum": -6.283185307179586
      }
     },
     "additionalProperties": false
    },
    "phase_context": {
     "enum": [
      "exact",
      "ignore_global_phase"
     ],
     "type": "string",
     "title": "Phase Context"
    },
    "candidate_circuit": {
     "type": "array",
     "items": {
      "type": "object",
      "title": "PhaseOperation",
      "required": [
       "gate",
       "targets"
      ],
      "properties": {
       "gate": {
        "enum": [
         "x",
         "y",
         "z",
         "h",
         "s",
         "sdg",
         "t",
         "tdg",
         "rx",
         "ry",
         "rz",
         "cx",
         "cz"
        ],
        "type": "str
… (truncated)
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/rqm-phase-sensitive-inspection-a76e3e60/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)