e2a MCP

Tool annotations

69/71 tools have annotations

Add readOnlyHint or destructiveHint annotations to every tool so hosts can warn users before invoking.

All four hints declared on every tool

71/71 tools missing one or more hints — list_agents (missing: destructiveHint, idempotentHint, openWorldHint); get_agent (missing: destructiveHint, idempotentHint, openWorldHint); whoami (missing: destructiveHint, idempotentHint, openWorldHint), +68 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

59/71 tool handlers declare input schemas (83%)

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

Tool handlers catch errors

Only 2/71 tool handlers wrap calls in try/catch (3%)

Wrap each tool handler body in try/catch and return a structured error response.

Tool test coverage

Only 1/71 tools referenced in tests (1%)

Write tests that reference each tool by name so every tool has at least one test.

Shell command execution

1 child_process call — runs shell commands

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

Secrets stay with their owner

1 secret/sensitive value flow into network calls (E2A_API_URL → dynamic)

Audit where credentials are sent. A NOTION_TOKEN should only reach api.notion.com — never a third-party host.

Domain consistency

npm scope @e2a doesn't match GitHub owner tokencanopy

Use the same org name across GitHub, npm, and your homepage so users can verify the publisher.