# Cherami (io.github.cherami-mail/cherami-mcp): tool descriptions scored

- tools/list taken: 2026-11-02 (UTC)
- From: [Official MCP Registry](https://registry.modelcontextprotocol.io/v0/servers/io.github.cherami-mail%2Fcherami-mcp/versions/latest)
- Connected to: https://cherami.to/mcp
- Homepage: https://cherami.to/docs/mcp
- Scoring rules: v2
- Tools: 42
- Average: 50.6 / 100 (Cloudy)
- Near-identical pairs: 6

This page shows how Cherami (io.github.cherami-mail/cherami-mcp)'s tool descriptions scored, the issues found and the names of its tools and parameters. The descriptions are the server's own: read them where the copy came from.

Forecall asked the URL this server lists in the official MCP Registry for its tools/list once, on the date above, without calling any tool. The server may have changed since.

## Across the server

- Major: 42 tools. Above 40, models choose less accurately.
- Minor: The server has no instructions. Say there, once, what the server is for and when to use it: Claude Code and Gemini CLI read the instructions before the tool descriptions.

## Tools

- `update_message_labels`: 31 / 100
  - Major: The description only restates the name (8 words).
  - Major: Says nothing about when to use it, or when not to.
  - Major: Arguments without a description: message_id, add_labels, remove_labels.
  - Minor: The description mentions none of its 3 or more arguments.
  - Minor: Required identifiers whose description does not say where the value comes from: message_id. Name the tool or the place that returns it, or models look it up first.
- `update_sent_message_labels`: 31 / 100
  - Major: The description only restates the name (8 words).
  - Major: Says nothing about when to use it, or when not to.
  - Major: Arguments without a description: message_id, add_labels, remove_labels.
  - Minor: The description mentions none of its 3 or more arguments.
  - Minor: Required identifiers whose description does not say where the value comes from: message_id. Name the tool or the place that returns it, or models look it up first.
- `get_inbox`: 38 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Major: Arguments without a description: inbox_id.
  - Minor: Required identifiers whose description does not say where the value comes from: inbox_id. Name the tool or the place that returns it, or models look it up first.
- `list_drafts`: 39 / 100
  - Major: The description only restates the name (9 words).
  - Major: Says nothing about when to use it, or when not to.
  - Minor: Arguments without a description: inbox_id, limit.
  - Minor: The description mentions none of its 3 or more arguments.
  - Minor: Required identifiers whose description does not say where the value comes from: inbox_id. Name the tool or the place that returns it, or models look it up first.
- `bulk_update_message_labels`: 42 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Major: Arguments without a description: message_ids, add_labels, remove_labels.
  - Minor: The description mentions none of its 3 or more arguments.
  - Minor: Required identifiers whose description does not say where the value comes from: message_ids. Name the tool or the place that returns it, or models look it up first.
- `bulk_update_sent_message_labels`: 42 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Major: Arguments without a description: message_ids, add_labels, remove_labels.
  - Minor: The description mentions none of its 3 or more arguments.
  - Minor: Required identifiers whose description does not say where the value comes from: message_ids. Name the tool or the place that returns it, or models look it up first.
- `get_draft`: 42 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Major: Arguments without a description: draft_id.
  - Minor: Required identifiers whose description does not say where the value comes from: draft_id. Name the tool or the place that returns it, or models look it up first.
- `delete_draft`: 44 / 100
  - Major: Arguments without a description: draft_id.
  - Minor: Required identifiers whose description does not say where the value comes from: draft_id. Name the tool or the place that returns it, or models look it up first.
- `list_labels`: 44 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: Arguments without a description: inbox_id, limit.
  - Minor: The description mentions none of its 3 or more arguments.
  - Minor: Required identifiers whose description does not say where the value comes from: inbox_id. Name the tool or the place that returns it, or models look it up first.
- `get_receiving_policy`: 45 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Major: Arguments without a description: inbox_id.
  - Minor: Required identifiers whose description does not say where the value comes from: inbox_id. Name the tool or the place that returns it, or models look it up first.
- `get_message`: 46 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: Arguments without a description: message_id.
- `get_sent_message`: 46 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: Arguments without a description: message_id.
  - Minor: Required identifiers whose description does not say where the value comes from: message_id. Name the tool or the place that returns it, or models look it up first.
- `delete_inbox`: 47 / 100
  - Major: Arguments without a description: inbox_id.
  - Minor: Required identifiers whose description does not say where the value comes from: inbox_id. Name the tool or the place that returns it, or models look it up first.
- `list_trash`: 47 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Major: Arguments without a description: inbox_id, limit.
  - Minor: The description mentions none of its 3 or more arguments.
  - Minor: Required identifiers whose description does not say where the value comes from: inbox_id. Name the tool or the place that returns it, or models look it up first.
- `update_draft`: 47 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: Arguments without a description: draft_id, to, cc, bcc, subject, attachments[].filename.
  - Minor: String arguments with no constraint or example: subject, attachments[].filename, attachments[].type.
  - Minor: The description mentions none of its 3 or more arguments.
  - Minor: Required identifiers whose description does not say where the value comes from: draft_id. Name the tool or the place that returns it, or models look it up first.
- `update_thread_labels`: 47 / 100
  - Major: Arguments without a description: thread_id, add_labels, remove_labels.
  - Minor: The description mentions none of its 3 or more arguments.
  - Minor: Required identifiers whose description does not say where the value comes from: thread_id. Name the tool or the place that returns it, or models look it up first.
- `create_draft`: 48 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: Arguments without a description: inbox_id, to, cc, bcc, subject, attachments[].filename, source.action, source.message_id.
  - Minor: String arguments with no constraint or example: subject, attachments[].filename, attachments[].type.
  - Minor: Required identifiers whose description does not say where the value comes from: inbox_id. Name the tool or the place that returns it, or models look it up first.
- `read_raw_message`: 48 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: Arguments without a description: message_id.
  - Minor: The description mentions none of its 3 or more arguments.
  - Minor: Required identifiers whose description does not say where the value comes from: message_id. Name the tool or the place that returns it, or models look it up first.
- `update_inbox`: 49 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: Arguments without a description: inbox_id.
  - Minor: Required identifiers whose description does not say where the value comes from: inbox_id. Name the tool or the place that returns it, or models look it up first.
- `delete_message`: 50 / 100
  - Major: Arguments without a description: message_id.
  - Minor: Required identifiers whose description does not say where the value comes from: message_id. Name the tool or the place that returns it, or models look it up first.
- `delete_sent_message`: 50 / 100
  - Major: Arguments without a description: message_id.
  - Minor: Required identifiers whose description does not say where the value comes from: message_id. Name the tool or the place that returns it, or models look it up first.
- `delete_thread`: 50 / 100
  - Major: Arguments without a description: thread_id.
  - Minor: Required identifiers whose description does not say where the value comes from: thread_id. Name the tool or the place that returns it, or models look it up first.
- `get_sending_policy`: 50 / 100
  - Major: Arguments without a description: inbox_id.
  - Minor: Required identifiers whose description does not say where the value comes from: inbox_id. Name the tool or the place that returns it, or models look it up first.
- `count_messages`: 51 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: Arguments without a description: inbox_id.
  - Minor: The description mentions none of its 3 or more arguments.
  - Minor: Required identifiers whose description does not say where the value comes from: inbox_id. Name the tool or the place that returns it, or models look it up first.
- `read_attachment`: 53 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: Arguments without a description: message_id.
  - Minor: The description mentions none of its 3 or more arguments.
  - Minor: Required identifiers whose description does not say where the value comes from: message_id, attachment_id. Name the tool or the place that returns it, or models look it up first.
- `list_threads`: 54 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: Arguments without a description: inbox_id, limit.
  - Minor: The description mentions none of its 3 or more arguments.
  - Minor: Required identifiers whose description does not say where the value comes from: inbox_id. Name the tool or the place that returns it, or models look it up first.
- `reply_message`: 54 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: Arguments without a description: labels, attachments[].filename.
  - Minor: String arguments with no constraint or example: attachments[].filename, attachments[].type.
  - Minor: The description mentions none of its 3 or more arguments.
- `send_message`: 55 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: Arguments without a description: subject, attachments, attachments[].filename.
  - Minor: String arguments with no constraint or example: attachments[].filename, attachments[].type.
  - Minor: Required identifiers whose description does not say where the value comes from: inbox_id. Name the tool or the place that returns it, or models look it up first.
- `forward_message`: 56 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: Arguments without a description: labels, to, cc, bcc.
  - Minor: Required identifiers whose description does not say where the value comes from: inbox_id, message_id. Name the tool or the place that returns it, or models look it up first.
- `create_inbox`: 57 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: The description mentions none of its 3 or more arguments.
- `get_thread`: 57 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: Arguments without a description: thread_id, limit.
  - Minor: The description mentions none of its 3 or more arguments.
  - Minor: Required identifiers whose description does not say where the value comes from: thread_id. Name the tool or the place that returns it, or models look it up first.
- `list_inboxes`: 57 / 100
  - Major: Says nothing about when to use it, or when not to.
- `restore_message`: 57 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: Required identifiers whose description does not say where the value comes from: message_id. Name the tool or the place that returns it, or models look it up first.
- `restore_sent_message`: 57 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: Required identifiers whose description does not say where the value comes from: message_id. Name the tool or the place that returns it, or models look it up first.
- `submit_feedback`: 57 / 100
  - Major: Says nothing about when to use it, or when not to.
- `list_messages`: 59 / 100
  - Minor: Arguments without a description: inbox_id, limit.
  - Minor: The description mentions none of its 3 or more arguments.
- `list_sent`: 59 / 100
  - Minor: Arguments without a description: inbox_id, limit.
  - Minor: The description mentions none of its 3 or more arguments.
  - Minor: Required identifiers whose description does not say where the value comes from: inbox_id. Name the tool or the place that returns it, or models look it up first.
- `reply_all_message`: 59 / 100
  - Minor: Arguments without a description: labels, attachments[].filename.
  - Minor: String arguments with no constraint or example: attachments[].filename, attachments[].type.
  - Minor: The description mentions none of its 3 or more arguments.
- `get_account`: 60 / 100
  - Major: Says nothing about when to use it, or when not to.
- `get_outbound_quota`: 60 / 100
  - Major: Says nothing about when to use it, or when not to.
- `get_service_info`: 62 / 100
- `send_draft`: 80 / 100
  - Minor: Required identifiers whose description does not say where the value comes from: draft_id. Name the tool or the place that returns it, or models look it up first.

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