# ICC Matrix/TRC Profile PCS Verification

> ICC Matrix/TRC Profile PCS Verification is a paid API for AI agents from detect.halowerk.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-21).

Validates an ICC color profile's RGB-to-XYZ matrix and tone reproduction curve (TRC) against its declared PCS (Profile Connection Space) XYZ values.

## Facts

- Endpoint: POST https://detect.halowerk.com/v1/integration/api-icc-matrix-trc-pcs?utm_source=zero.xyz
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/icc-matrix-trc-profile-pcs-verification-a22c326d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_cDYhzY-F7HE-sQeKcjfhs

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 icc-matrix-trc-profile-pcs-verification-a22c326d -d '<json body>'
```

Example prompt: Can you check whether this ICC profile's RGB-to-XYZ matrix and TRC curves (parametric functions 0–4) actually match its declared PCS XYZ values? Here's the icc_contract object with the profile data.

## When to prefer this

Use this endpoint when you need to programmatically verify that an ICC matrix profile's TRC and RGB-to-XYZ transform data are internally consistent with their declared PCS XYZ commitments — particularly during print preflight, color pipeline QA, or software release validation. This is distinct from full ICC profile linting tools; it focuses specifically on matrix/TRC-to-PCS consistency without LUT support.

## Known failure modes

- Malformed icc_contract object causes 400 Bad Request
- LUT-based profiles rejected — only matrix/TRC profiles without LUTs are supported
- Missing icc_contract field returns validation error
- Profile data with unsupported TRC function types may fail
- Payment not included or insufficient returns 402 Payment Required

## How this service works

ICC-Matrix/TRC-API-Profil gegen zugesagte PCSXYZ-Werte prüfen.

## Output

Returns a validation outcome indicating whether the ICC profile's RGB-to-XYZ matrix and tone reproduction curve (TRC), including parametric curve functions 0–4, are consistent with the profile's declared PCS XYZ values. Likely includes pass/fail status and details of any detected mismatches or deviations.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "artifact": {
   "type": "object",
   "required": [
    "icc_contract"
   ],
   "properties": {
    "icc_contract": {
     "type": "object",
     "description": "RGB-to-XYZ matrix/TRC,curve and parametric functions0..4. No LUT profile, calibration or quality guarantee.",
     "additionalProperties": true
    }
   },
   "additionalProperties": true
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/icc-matrix-trc-profile-pcs-verification-a22c326d/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from detect.halowerk.com](https://www.zero.xyz/host/detect.halowerk.com/llms.txt)