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Halowerk Voice Clone Check — Embedding Similarity Scorer
x402
Halowerk Voice Clone Check — Embedding Similarity Scorer is a paid API for AI agents from creator.halowerk.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-13).
Computes a weighted similarity score between two numeric voice embeddings combined with caller-supplied spectral distance, pitch-contour correlation, and timing distance to produce a composite voice-match score.
Price / call$0.003
Success—
StatusUnknown
How this service works
Calculates cosine similarity between caller-supplied numeric embeddings and combines it with supplied spectral distance, pitch-contour correlation and timing distance using fixed weights. It processes no audio and cannot establish speaker identity, consent, cloning, authenticity or fraud.
Output
Returns a composite voice-match score derived from the cosine similarity between the two supplied numeric embeddings, combined with the caller-provided spectral distance, pitch-contour correlation, and timing distance using fixed internal weights. Does not process audio, infer speaker identity, or determine authenticity.
Example use cases
Voice Feature Similarity Pipeline
“I've extracted embeddings from two audio clips — reference: [0.3, -0.7, 0.5, 0.2] and candidate: [0.31, -0.68, 0.52, 0.19] — and computed spectral distance 0.1, pitch-contour correlation 0.92, and timing distance 0.05. Can you give me a weighted composite similarity score?”
Multi-Feature Voice Match Scoring
“Combine these precomputed voice features into one score for me: the two speaker embeddings I'll pass, spectral distance is 0.35, pitch-contour correlation is 0.60, and timing distance is 0.4. I need the composite match value.”
Research Embedding Distance Aggregation
“I have four-dimensional reference and candidate voice embeddings from my experiment and separately computed spectral distance 0.25, pitch correlation 0.75, and timing distance 0.3 — can you run them through the weighted similarity scorer and give me the combined result?”
Technical details
Endpoint
POSThttps://creator.halowerk.com/v1/voice-clone-checkWhen to prefer
Use this endpoint when you have already extracted numeric voice embeddings and supplementary feature distances (spectral, pitch, timing) externally and need a fast, deterministic weighted composite similarity score. Do not use it to process raw audio, identify speakers, detect clones, assess consent, or flag fraud — it performs only numeric aggregation of caller-supplied features.
Side effects
- Mismatched embedding lengths between candidate and reference vectors return a validation error
- Values outside allowed ranges (e.g. spectral_distance_0_1 > 1 or pitch_contour_correlation < -1) are rejected
- Embeddings with fewer than 2 or more than 4096 elements are rejected
- Missing required fields result in an error response
- Numeric overflow from extreme embedding values near ±1,000,000 may cause computation errors
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| candidate_embedding | array | |
| reference_embedding | array | |
| timing_distance_0_1 | number | |
| spectral_distance_0_1 | number | |
| pitch_contour_correlation | number |
Tags
x402
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