fathom (KrakenNet/fathom) is an MCP server listed on the M8ven Trust Index. M8ven has not graded it: we have no way to read this server ourselves. No publisher has claimed this listing.

Back to MCP Trust Indexm8ven
C
Emerging
74/100
8 days ago

fathom

Deterministic reasoning runtime for AI agents. YAML rules, microsecond evaluation, zero hallucinations. Built on CLIPS.

→ KrakenNet/fathom· listed on github_code

Emerging. No concerning findings. Grades remain capped until the project builds reputation through adoption. Grades reflect the full trust pyramid: code, verification depth, and reputation. New projects cap at C until adoption is earned.

How we verified

Code Verified⚡ Live Monitored: not connected

Verified is a snapshot. Live keeps it current, and builds your track record.

⚡ Connect GitHub → continuous verification on every pushwhy connect →

Who stands behind it

KrakenNet

Source: github_code

Is this your MCP?

Claim it to get a verified publisher badge, a free copy of our full audit findings, and direct contact for any high-priority issues we find. Or connect your repo for our deepest verification, Live Monitored: read-only, revoke anytime. What we access →

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Install from

GitHub

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// key findings
✅
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 3 credentials: FATHOM_API_TOKEN, FATHOM_GRPC_TLS_KEY, FATHOM_ADMIN_TOKEN
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.
configFATHOM_STUDIO_PORT
🔐 secretFATHOM_API_TOKEN
configFATHOM_RULESET_ROOT
configFATHOM_GRPC_TLS_CERT
🔐 secretFATHOM_GRPC_TLS_KEY
configFATHOM_GRPC_ALLOW_INSECURE
configFATHOM_SDK_DOCS_DIR
configFATHOM_METRICS
🔐 secretFATHOM_ADMIN_TOKEN
configFATHOM_MAX_RELOAD_BYTES
configFATHOM_MAX_REQUEST_BYTES
configFATHOM_EXPOSE_DOCS
configFATHOM_RULESET_PUBKEY_PATH
configFATHOM_ALLOW_UNSIGNED_RULESETS
configLLM_BASE_URL
configLLM_MODEL
// 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

5/5 tools missing one or more hints — fathom.evaluate (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); fathom.assert_fact (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); fathom.query (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint), +2 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.

Domain consistency

npm scope @fathom doesn't match GitHub owner krakennet

Use the same org name across GitHub, npm, and your homepage so users can verify the publisher.

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 3 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
[![M8ven Score](https://m8ven.ai/badge/mcp/krakennet-fathom-1dwvuu)](https://m8ven.ai/mcp/krakennet-fathom-1dwvuu)
Shows your grade and updates automatically. Prefer no grade? Append ?variant=verified to the badge URL.
commit: 5aa102833a10be845949db20aaa1d1b882e1b73f
code hash: 58fb8e3309ca48e3437b68b204339e254023a050a50c316424c96672c586b25a
verified: 8/21/2026, 9:05:49 AM
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