king-crimson-mcp (ytkoka/king-crimson-mcp) is an MCP server listed on the M8ven Trust Index. It scores 68 out of 100, grade C. It declares 12 tools. No publisher has claimed this listing.
MCP server that surfaces King Crimson records, live performances, and a curated incarnation model showing which line-up era each song belongs to.
Caution. Specific findings reduced this grade. They are listed on the page. Grades reflect the full trust pyramid: code, verification depth, and reputation. New projects cap at C until adoption is earned.
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ytkoka
Source: Glama
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Install from
The grade above is for the source repository. Registries can serve a different version, so we mark the ones we were not able to read.
MCP_CONTACTYou also set a contact email () — MusicBrainz requires this soDISCOGS_TOKENNeeds its own one-time cache: run refresh_box_sets_cache (about a minute; ~38 box sets/compilations from Discogs, as of this writing). Requires .SETLISTFM_API_KEY"": "your-setlistfm-key",KC_CACHE_DIRoptional; overrides where the setlist cache is written (see below).XDG_CACHE_HOMETool annotations
No tools have read-only/destructive annotations
Add readOnlyHint or destructiveHint annotations to every tool so hosts can warn users before invoking.
All four hints declared on every tool
12/12 tools missing one or more hints — search_release (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); get_credits (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); get_editions (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint), +9 more. OpenAI's directory rejects tools where any of the four hints are missing or non-boolean.
For every tool, set all four hints (readOnlyHint, destructiveHint, idempotentHint, openWorldHint) to explicit true/false values that match the handler’s actual behaviour.
Descriptions match behaviour
3 tools describe read intent but their handlers mutate — refresh_setlist_cache (line 936: cache_file.write_text(json.dumps(payload, ensure_ascii=False, indent=2))); refresh_live_releases_cache (line 1181: cache_file.write_text(json.dumps(payload, ensure_ascii=False, indent=2))); refresh_box_sets_cache (line 1384: cache_file.write_text(json.dumps(payload, ensure_ascii=False, indent=2)))
Rename the tool, rewrite the description, or move the side-effect into a separate clearly-named tool.
Tests exist
No test files found
Add tests that exercise each declared tool.
Tool description accuracy
3 tools have description/behavior mismatches: refresh_setlist_cache: description implies read-only but handler writes/deletes/executes; refresh_live_releases_cache: description implies read-only but handler writes/deletes/executes; refresh_box_sets_cache: description implies read-only but handler writes/deletes/executes
Update tool descriptions to accurately reflect all capabilities — especially write, delete, or execute operations.
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