# Eclipse Colophon MCP
Copyright © 2026 Cyan Eclipse Technologies LLC · cetech.ai

**Eclipse Colophon — catalog of record for books: signed titles, rights, prices & royalties, checked everywhere they sell.**

P0 (local/simulator, synthetic fixtures only): 23 tools — signed TitleRecord (only SIGNED versions enforce), closed 8-class divergence vocabulary, royalty recompute line-by-line from record terms with per-line arithmetic trace + honest coverage, price-match CRITICAL trap at check time, discovered editions QUARANTINED (never auto-promoted), NO price-write verb on the surface, `PIRATE_SOURCE_REFUSED` for LibGen-class sources in any form. `commerce_verify_offer` = P2 surface, simulator-proven at P0 only. Watch = D4-gated (absent). Connector fetch = P1/D3-gated (absent).

Run: `python3 tests/test_regression.py` · Bench: `python3 ../test-bench/bench_colophon.py`
Spec: `../eclipse-colophon-spec-20261025.md`