Pylon MCP Server
An MCP server that integrates with the Pylon API, providing 38 tools for user management, contacts, issues, tags, external issue linking, knowledge bases, teams, accounts, attachments, and more.
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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mgmonteleone
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.
Disclosed vulnerabilities in this server's declared npm dependencies (via OSV). Whether each is reachable depends on the installed versions.
When Vitest UI server is listening, arbitrary file can be read and executed
axios Vulnerable to Full Man-in-the-Middle via Prototype Pollution Gadget in `config.proxy`
axios Vulnerable to Credential Theft and Response Hijacking via Prototype Pollution Gadget in Config Merge
Axios: Header Injection via Prototype Pollution
Allocation of Resources Without Limits or Throttling in Axios
PYLON_API_TOKENYour Pylon API token (required)PYLON_BASE_URLPYLON_CACHE_TTLCache time-to-live in milliseconds (optional, default: 30000)PYLON_RETRY_MAXMaximum retry attempts for transient failures (optional, default: 3)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
38/38 tools missing one or more hints — pylon_get_me (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); pylon_get_users (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); pylon_search_users (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint), +35 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.
Tool inputs are validated
31/38 tool handlers declare input schemas (82%)
Declare an inputSchema with zod/joi/yup on every tool definition.
Tool test coverage
27/38 tools referenced in tests (71%)
Write tests that reference each tool by name so every tool has at least one test.
Production dependencies are patched
0 critical, 10 high severity in production deps — axios@1.13.5 (high), axios@1.13.5 (high)
Run npm audit fix, or upgrade the affected packages to a non-vulnerable version.
Dev dependencies
1 critical/high in dev-only deps (does not ship to users)
Upgrade dev dependencies when convenient.
Domain consistency
npm scope @customer-support-success doesn't match GitHub owner mgmonteleone
Use the same org name across GitHub, npm, and your homepage so users can verify the publisher.
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