tbird-mcp (neil-zielsdorf/tbird-mcp) is an MCP server listed on the M8ven Trust Index. It scores 39 out of 100, grade F. It declares 9 tools. No publisher has claimed this listing.
Reads and searches Thunderbird mail from local mbox files and sends mail via SMTP using auto-discovered identities, filing copies in Thunderbird's Sent folder.
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neil-zielsdorf
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.
TBIRD_PROFILEabsolute path to a specific Thunderbird profile dirTBIRD_CREDENTIALSpath to the credentials fileXDG_CONFIG_HOMETool 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
9/9 tools missing one or more hints — list_accounts (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); list_folders (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); search_mail (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint), +6 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
6/9 tool handlers declare input schemas (67%)
Declare an inputSchema with zod/joi/yup on every tool definition.
Tool handlers catch errors
Only 0/9 tool handlers wrap calls in try/catch (0%)
Wrap each tool handler body in try/catch and return a structured error response.
Tests exist
No test files found
Add tests that exercise each declared tool.
No access to sensitive paths
Reads sensitive paths: credentials.toml
Remove reads of sensitive system paths. If you genuinely need them, document why in the README.
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