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RTK Motion BVH Motion Capture File Download
x402
RTK Motion BVH Motion Capture File Download is a paid API for AI agents from api.rtkmotion.io, paid per call via x402, $10/call, status unknown (last checked 2026-10-10).
Retrieves a BVH-format 4D motion-capture file (full skeleton, 60fps) for a specified subject, with a signed download URL and provenance metadata.
Price / call$10
Success—
StatusUnknown
How this service works
RTK Motion — 4D motion-capture data and AI agents for robotics and human-movement intelligence.
Output
Returns a JSON object containing: a time-limited download_url (expires in 900 seconds) pointing to the full BVH file, a BVH excerpt preview (first 40 lines), frame count (e.g. 1215), FPS (60), joint count (56), lesson label (e.g. BJJ/Training/KimuraFromSideControl/Lesson001), SHA256 hash, subject ID, byte size, and an ECDSA provenance signature signed by a known Ethereum address. The full BVH file must be downloaded before the URL expires.
Example use cases
Robotics training data ingestion
“Pull the RTK Motion BVH capture for subject_1 so I can load the full 56-joint skeleton sequence into my robot imitation-learning dataset.”
BJJ technique movement analysis
“Get me the BVH motion capture file for subject_2 from RTK Motion — I want to analyze the Kimura-from-side-control sequence frame by frame.”
Verified provenance for research pipeline
“Retrieve the signed RTK Motion BVH file for subject_1, including the ECDSA provenance signature and SHA256 hash, so I can verify data integrity before publishing my study.”
Technical details
Endpoint
GEThttps://api.rtkmotion.io/paid/bvh?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a full, authenticated BVH skeleton motion-capture file at 60fps for a specific subject, particularly for robotics imitation learning, biomechanics research, or animation pipelines that require verified data provenance via ECDSA signature. Prefer this over excerpt or preview endpoints when you need the complete frame sequence rather than a sample.
Side effects
- Payment not completed — 402 response requiring x402 micropayment before data is released
- Invalid subject parameter — only 'subject_1' and 'subject_2' are accepted values
- Download URL expiry — if the returned URL is not redeemed within 900 seconds, a re-purchase is required
- Network timeout on large BVH file (~592 KB) during download
- Signature verification failure if provenance hash does not match downloaded file content
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"fps": 60,
"bytes": 592418,
"domain": "4D Motion Capture",
"format": "BVH",
"frames": 1215,
"joints": 56,
"lesson": "BJJ/Training/KimuraFromSideControl/Lesson001",
"sha256": "…",
"subject": "subject_1",
"next_step": {
"note": "bvh_excerpt_preview_only is the first 40 lines, NOT the purchased product. Redeem download_url before expiry or re-purchase is required.",
"action": "GET download_url to retrieve the full BVH file",
"required": true,
"expires_in_seconds": 900
},
"provenance": {
"algorithm": "secp256k1-ECDSA",
"signed_by": "0x6C11F8a21f7ca922F483Ed21C3b6c2d9B305B10C"
},
"download_url": "https://api.rtkmotion.io/data/…",
"bvh_excerpt_provenance": "HIERARCHY\nROOT Hips\n{..."
}
}Tags
x402
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