operant-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

62/62 tools missing one or more hints — idor_test (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); role_escalation_test (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); auth_csrf_extract (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint), +59 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

9 tools perform destructive updates without destructiveHint — file_upload_test deletes at line 208 (fs.unlinkSync(tmpPath)); race_single_packet deletes at line 163 (unlink(scriptPath)); race_last_byte_sync deletes at line 301 (unlink(scriptPath))

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

3 tools describe read intent but their handlers mutate — file_upload_test (line 105: fs.writeFileSync(tmpPath, content, "utf-8")); pcap_http_objects (line 163: fs.mkdirSync(output_dir, { recursive: true })); param_discover (line 253: unlink(outputFile))

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

Tool inputs are validated

40/62 tool handlers declare input schemas (65%)

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

Tests exist

No test files found

Add tests that exercise each declared tool.

Shell command execution

1 call in production code run through a shell (src/runner.ts:120)

Prefer library functions over shell-outs. If you must shell out, ensure all inputs are properly escaped.

Readable source code

1 file appear obfuscated, including code that decodes and evaluates itself at runtime

Ship unminified, readable source.

Tool description accuracy

3 tools have description/behavior mismatches: file_upload_test: description implies read-only but handler writes/deletes/executes; pcap_http_objects: description implies read-only but handler writes/deletes/executes; param_discover: description implies read-only but handler writes/deletes/executes

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