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.

C
Caution
68/100
1 month ago

king-crimson-mcp

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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Who stands behind it

ytkoka

Source: Glama

Is this your MCP?

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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.

// key findings
⚠️
Tool descriptions don’t match what handlers do
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)))
No credential exfiltration, no sensitive file access, no obfuscation
Static analysis found nothing flowing your secrets to unexpected places.
Open source with a license and README
Anyone can audit the code, the license is declared, and the publisher documents what it does.
🔐
You'll be asked for 2 credentials: DISCOGS_TOKEN, SETLISTFM_API_KEY
These are read from process.env at runtime. Make sure you trust where they’ll be sent.
// environment variables
To run this server yourself, you supply these values. They go in your own MCP client configuration and stay on your machine. The secret label means the value is sensitive, not that the server mishandles it.
configMCP_CONTACTYou also set a contact email () — MusicBrainz requires this so
🔐 secretDISCOGS_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 .
🔐 secretSETLISTFM_API_KEY"": "your-setlistfm-key",
configKC_CACHE_DIRoptional; overrides where the setlist cache is written (see below).
configXDG_CACHE_HOME
// quality suggestions

Tool 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.

Claim the listing to review these findings one by one and send us a correction where you disagree, straight to the team. Claiming also means we tell you when the grade moves, and reach you first if we find anything urgent.

// full audit trail
The findings above are the summary. The full trail, every check we ran, each deduction, the network hosts observed and the dependency advisories, goes to verified publishers, along with an alert whenever a new one lands. Verified publishers can also review each finding and dispute it in one click. Publisher corrections have sharpened several of our checks this month, because the maintainer knows the codebase better than any scanner.
// improvement guidance — verified publishers only
We have 5 concrete improvements we can share with the publisher of this MCP. Each comes with specific guidance to raise the trust score.
// embed badge in your README
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commit: c655ecf5439cfd48b919fb0b16dbcf0ea1c7ffc9
code hash: b162c8b31ede619babeee4ef634428ef89de252d2da7faf55fc3e624bf330feb
verified: 8/13/2026, 7:47:44 AM
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