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OpenType COLRv1 Paint DAG Materializer & Verifier
x402
OpenType COLRv1 Paint DAG Materializer & Verifier is a paid API for AI agents from detect.halowerk.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-11-04).
Materializes and verifies complete COLRv1 color-glyph paint directed acyclic graphs including palette, transforms, clip regions, layer/composite order, and variation facts, then compares a SHA256 hash of the typed result.
Price / call$0.003
Success—
StatusUnknown
How this service works
Materialize complete COLRv1 color-glyph paint DAGs with palette, transform, clip, layer/composite order and exact variation facts; not generic SVG filters or font outline decode.. Compare the complete typed result SHA256.
Output
A fully materialized COLRv1 paint DAG with all palette mappings, transform data, clip regions, layer/composite ordering, and variation facts, plus a SHA256 hash of the typed result compared against the submitted claim — returning pass/fail on the hash comparison along with the computed digest.
Example use cases
Color font paint graph audit
“I built a COLRv1 color glyph with 3 glyphs, 8 paint nodes using formats 1 through 10, palette index 0, gradient stops at offsets 0 and 1, composite mode 3, and a clip rect of [0,0,1000,1000] — please materialize the full paint DAG and tell me if its SHA256 matches my expected hash.”
Variable color font variation check
“My OpenType COLRv1 variable color font has paint nodes with variation params and I need to verify that the complete paint DAG with transforms, palette mappings, and layer order is correct — can you reconstruct it and compare the SHA256 of the result to my claimed hash?”
Font rendering pipeline validation
“I'm building a font renderer and need to confirm that the COLRv1 paint tree for a glyph — including clip regions, gradient extends set to 'reflect', alpha values, and composite order — is correctly materialized; please verify the full graph and check the SHA256 digest.”
Technical details
Endpoint
POSThttps://detect.halowerk.com/v1/F-TD2000-DOCUMENTS-17-DOCS/opentype191-colrv1-paint-graph-palette-transform-clip-composition?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need authoritative, deterministic verification of a COLRv1 color-glyph paint directed acyclic graph — including exact palette, transform, clip, layer/composite order, and variation facts — and want to confirm a SHA256 hash of the result. Prefer this over generic SVG filter tools or font outline decoders; it is specifically scoped to the OpenType COLRv1 paint graph model, not rasterization or glyph outline decoding.
Side effects
- Invalid paint format integer outside range 1-32 returns validation error
- Composite mode value outside 0-27 is rejected
- Glyph array exceeding 16 items or gradient stops exceeding 16 items are rejected
- Malformed paint ID not matching the identifier pattern causes schema rejection
- SHA256 claim mismatch returns a failed verification with the actual computed hash
- Missing required fields (paints, glyphs, root, palette, foreground) result in 400 error
- Circular paint DAG references may cause processing failure
- Alpha values outside 0-2 range are rejected
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| artifact | object |
Tags
x402
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