kaggle-mcp

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

41/41 tools missing one or more hints — kaggle_whoami (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); kaggle_status (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); kaggle_audit_log (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint), +38 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.

Destructive tools are labelled

7 tools perform destructive updates without destructiveHint — kaggle_download_competition_files deletes at line 230 (z.unlink()); kaggle_eda_competition deletes at line 251 (z.unlink()); kaggle_competition_kickoff deletes at line 317 (z.unlink())

Add destructiveHint:true to any tool whose handler calls .delete(), .upsert(), .update(), unlink, rm, DELETE, DROP, REPLACE INTO, or any operation that overwrites existing data.

Descriptions match behaviour

2 tools describe read intent but their handlers mutate — kaggle_eda_competition (line 251: z.unlink()); kaggle_eda_dataset (line 97: z.unlink())

Rename the tool, rewrite the description, or move the side-effect into a separate clearly-named tool.

Tool inputs are validated

39/41 tool handlers declare input schemas (95%)

Declare an inputSchema with zod/joi/yup on every tool definition.

Tool handlers catch errors

35/41 tool handlers wrap calls in try/catch (85%)

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.

Tool description accuracy

3 tools have description/behavior mismatches: kaggle_eda_competition: description implies read-only but handler writes/deletes/executes; kaggle_eda_dataset: description implies read-only but handler writes/deletes/executes; kaggle_dataset_preview: description implies read-only but handler writes/deletes/executes

Update tool descriptions to accurately reflect all capabilities — especially write, delete, or execute operations.