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Is Plumbline — a trust layer for LLM answers MCP server safe?

Probably. Read the findings first.

C60/100grade C

Use with care. Some checks failed or could not be verified.

What to know before installing
  • highWrite-action tools reachable without authentication

Public scan report

scanner v0.1.9 · 2026-09-21 · same rubric, same numbers if you re-run it

1 high1 low
  • –Code scanremote-only server, no package to scann/a
  • Live reliabilityremote reachable in 1029ms20/20
  • Tool poisoning18 tool descriptions checked15/15
  • Auth qualityopen endpoint exposes 4 write-action tools with no auth3/15
  • Maintenanceno repository listed3/15
  • Maintainer identityverified namespace with website, no repo4/10

Findings (2)

  • highWrite-action tools reachable without authenticationauth.open-write
  • lowNo source repository listedmaint.no-repo
Overall 60/100. Components that don't apply are left out of the denominator. Any critical finding is an F.RubricAppeal a findingJSON

Other servers that do what Plumbline — a trust layer for LLM answers does

  • Shrike
    Governs what AI agents do: tool calls, SQL, commands, files checked against policy before they run.
    A
  • Midplane
    Safe-by-default SQL guardrails for AI agents: AST-checked queries, per-table policy, audit log.
    B
  • PostgreSQL (hardened, read-only)
    Read-only PostgreSQL over MCP. Writes refused at the parsed SQL, plus a READ ONLY transaction.
    C

Plumbline — a trust layer for LLM answers reviews, tools and install