We split this skill into the rules it gives an agent

9 rules. About 0 are common, 2 are distinctive, and 7 are very specific to this project.

• ≈0

  Common · estimate

  Many files like this have a rule of this kind.

• ≈2

  Distinctive · estimate

  This author's own choices. Worth a look.

• 7

  Very specific

  Tied to their project's names, files or tools. Probably skip.

• Common
• Distinctive
• Very specific

1. Very specific:

   Use this skill when a user wants to create an agent identity or manage the inbox and unique handle@agentmailer.ai address attached to an …

   line 8
2. Very specific:

   Call auth_me. Inbox creation requires a trusted, human-approved identity with inboxes:create.

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3. Very specific:

   Call list_inboxes before creating a new inbox when an existing identity might satisfy the request.

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4. Very specific:

   Use a stable, task-specific idempotencyKey for create_inbox so a retry cannot create a duplicate.

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5. Very specific:

   Verify that the returned address uses @agentmailer.ai, then return the identity's unique handle, inbox ID, address, display name, and …

   line 16
6. Very specific:

   Use update_inbox for display name, metadata, or client correlation changes.

   line 17
7. Very specific:

   If auth_me reports an unverified identity or creation returns human_approval_required, stop and follow the signup sequence at …

   line 19
8. Distinctive:

   Read references/inbox-tools.md when choosing tool inputs or handling permissions.

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9. Distinctive:

   Start with the AgentMailer quickstart for inbox discovery and the [human-approved signup

   line 27

≈ “Common” is an estimate: at least 1 in 5 of the 350,495 skill files we read have a rule of the same kind, not the same words. “Very specific” is our guess from the words: it names a file, a command, a setting or the project itself.