polygraph.so
§ MCP/Behavioral grade
A

npm/@modelcontextprotocol/server-github

graded version 2025.4.8 · litmus-v6 · 2026-06-24

Adoption 73/100 · 621K npm/mo · as of 2026-06-26

C-01 Tool-output injection
pass
C-02 Permission / egress overreach
pass
C-03 Sensitive-data handling
pass
C-04 Adversarial-input handling
pass

tool-defs fingerprint · 0x1e0842…46f22

Why A: All four categories passed. No injection, no data leak, no egress overreach, and adversarial inputs were handled cleanly (A means no overreach, not no network).

Adoption signals

The 73 / 100 adoption score blends the raw signals below — downloads, stars, dependents and release velocity — normalized across every tracked server. It measures reach, not safety; the litmus grade is the safety verdict. See the methodology.

npm downloads (30d)
621,363
Dependents (deps.dev)
28
Smithery installs
3,654
Last published
2025-04-08

Reproduce this grade

The harness is open and deterministic. Re-run it against the same server and compare the grade and fingerprint — a false grade is falsifiable, not merely disputable.

npx -p @polygraphso/litmus polygraphso-litmus npm/@modelcontextprotocol/server-github

Embed this badge

Drop it in a README, docs site, or package page. It always shows the current published grade and links back here.

polygraph grade A
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