cairnos
Local MCP server for CairnOS, a local-first productivity app. Exposes 13 tools that let Claude read and write the same local SQLite "brain" the app uses — create and update tasks, projects, reminders, ideas, and notes; classify natural-language brain dumps; and query overdue/today tasks and project context.
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.
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akramlam
Source: Glama
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Disclosed vulnerabilities in this server's declared npm dependencies (via OSV). Whether each is reachable depends on the installed versions.
esbuild enables any website to send any requests to the development server and read the response
CAIRN_DATA_DIROverride with CAIRN_DB_PATH or .CAIRN_DB_PATHOverride with or CAIRN_DATA_DIR.CAIRN_EMBED_MODELCAIRN_MIGRATIONS_DIRCAIRN_OLLAMA_HOSTCAIRN_OLLAMA_MODEL$env:CAIRN_CLASSIFIER="ollama"; $env:="llama3.2"; pnpm devCAIRN_PORTCAIRN_SEARCH$env:="semantic"; pnpm devCAIRN_SEED_FORCEpnpm db:seed Seed sample data (=1 to reseed).XDG_DATA_HOMEDependencies
6 dependencies, 1 flagged: playwright-core
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
13/13 tools missing one or more hints — create_task (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); update_task (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); mark_task_done (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint), +10 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
10/13 tool handlers declare input schemas (77%)
Declare an inputSchema with zod/joi/yup on every tool definition.
Tool handlers catch errors
Only 0/13 tool handlers wrap calls in try/catch (0%)
Wrap each tool handler body in try/catch and return a structured error response.
Tool test coverage
Only 0/13 tools referenced in tests (0%)
Write tests that reference each tool by name so every tool has at least one test.
Domain consistency
npm scope @cairn doesn't match GitHub owner akramlam
Use the same org name across GitHub, npm, and your homepage so users can verify the publisher.
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