Cumulative Web Inc

Project name: CWI Discovery Engine Tagline: When a robot doesn't know a song, it asks our library instead of making things up — the distribution layer for music in the AI era. Short description: The CWI Discovery Engine is a public MCP server that makes the Cumulative Web Inc music catalog (53 tracks, 7 artists, Post-Trap Futurism) queryable by any AI: 30 tools led by find_tracks_for_brief — natural-language brief in, licensable tracks with verified ISRCs and one-signature clearance out. Keyword search, 384-dim semantic vector search, sync-licensing search, live radio, and the full knowledge graph (151 nodes, 522 edges) over one JSON-RPC endpoint. Honest data posture: per-track ISRC status, never invented. What was built during the event (Oct 26 – Nov 4) — NEW WORK ONLY in the demo: - Muse Spark 1.3 (Meta Model API) reasons over a plain-language music brief and proposes tracks with reasons. - A deterministic gate disposes every candidate against the verified sync catalog: PASS with a verified ISRC, FLAG without one, DROP for anything not in the catalog. The gate never takes the model's word for a track. - The gate shipped as live MCP tool 30, verify_brief_candidates, on the public endpoint. - A live demo page with hash-chained per-brief receipts, including the ungrounded test: Spark invented 5 tracks with no catalog hints, the gate dropped all 5, shortlist empty. - A 3-minute demo video of only this new work. What existed before the event (clearly pre-built, not claimed as new): The Discovery Engine itself (MCP server, catalog, graph, embeddings, wedge tool, radio, registry listing v1.3.0, PyPI/JSR packages) — built before Oct 26 and identified as the base the new layer runs on. Live links: - One link (whole submission): https://github.com/CumulativeWebInc/cwi-learn/releases/tag/cwi-discovery-engine-v1.3.0 - New-work demo page: https://cumulativeweb.com/hackathon/verified-briefs.html - Live MCP endpoint: https://cwi-machine-data.hp-ace.workers.dev/mcp (alias: https://data.cumulativeweb.com/mcp) - 30-second live demo (Radio 365): https://cumulativeweb.com/radio.html - Demo video (3 min, new work only): https://github.com/CumulativeWebInc/cwi-learn/releases/download/cwi-discovery-engine-v1.3.0/cwi-discovery-engine-demo-3min.mp4 (also a release asset on the one-link release) - Attestations: https://cumulativeweb.com/verified/ (10/10 PASS Oct 27, incl. packages, tools, homepage) Judge test (paste in a terminal — a real MCP tool call): curl -s -X POST https://cwi-machine-data.hp-ace.workers.dev/mcp -H "Content-Type: application/json" -d '{"jsonrpc":"2.0","id":2,"method":"tools/call","params":{"name":"verify_brief_candidates","arguments":{"candidates":[{"title":"Zooted Zone","artist":"That Boy Hi Hat"},{"title":"Starlight Rebellion","artist":"Invented Artist"}]}}}' Expected: Zooted Zone PASS with verified ISRC, invented track DROP. Tech stack: Cloudflare Workers (edge MCP + D1), MCP Registry io.github.CumulativeWebInc/cwi-discovery-engine v1.3.0, bge-small-en-v1.5 embeddings (384-dim), JSON-LD knowledge graph, Muse Spark 1.3 (Meta Model API). Team: Cumulative Web Inc — founder Black Lansky. Solo entry. Second new-work component — Triangle Brain: verified recall for agents (built Oct 27, 2026, during the event window): Muse Spark 1.3 reasons over a question about the past, and a deterministic gate disposes every recalled claim against hash-chained anchors — PASS if anchored and current, FLAG if anchored but superseded, DROP if not in memory at all. The model reasons; the gate decides. Live proof, run Oct 27: grounded recall 2 PASS (the memory cycle; the 26-namespace triangle pass); a stale record flagged — “Discovery Engine has 29 tools” FLAGged superseded, because the live count is 30; ungrounded test 3 invented, 3 dropped, shortlist empty. Demo page: https://cumulativeweb.com/hackathon/verified-recall.html Second demo video (2:35, only this new work): https://github.com/CumulativeWebInc/cwi-learn/releases/download/cwi-discovery-engine-v1.3.0/cwi-triangle-brain-demo-3min.mp4 The base system behind it (encrypted agent memory repo, triangle daemon, triangle pass 26/26 ANCHORED-OK) was built before Oct 26 and is named here as the base, never claimed as new. Same anti-hallucination principle as the music gate, applied to an agent's memory instead of a catalog.