Observed arrival · 2026-09-15
Refmatter: Chain of Custody for Creative AI References
Refmatter turns a public video URL into a provenance-backed reference for creative AI agents, exposed through a REST API, TypeScript SDK, and MCP server.
Field notes
Refmatter separates observed source facts from user-owned annotations: titles, notes, and tags are protected from refreshes with optimistic concurrency. Its returned reference can include the source title, duration, platform, media container, dimensions, content hash, capture time, and contract version. The page also describes a deliberately limited acquisition model: public unauthenticated material only, with stable failure codes when a source will not serve content rather than partially populated results.
Observed signals
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Editorial observations of this landing page, not a rating.
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