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Install secrets on a Mac

install_secrets
Destructive

Installs the account's secrets and signing identities on a running Mac now: every-Mac secrets, the on-request ones named in names, and removes deleted ones. A Mac gets every-Mac secrets on its own when it becomes ready; call this after the human adds or changes one.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
namesNoSecrets set to only when asked to install too, by name; every-Mac secrets are always installed
session_idNoMac session ID (ses_…). Optional: without it, the account's running Mac.

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed2 schema fields changed
    • changedInput schema / properties / session_id / description
      Previous value: -"Mac session ID (ses_…) returned by start_mac or list_mac_sessions."New value: +"Mac session ID (ses_…). Optional: without it, the account's running Mac."
    • removedInput schema / required
      Removed value: -[
      -  "session_id"
      -]
  2. Changed2 schema fields changed
    • removedInput schema / $schema
      Removed value: -"http://json-schema.org/draft-07/schema#"
    • changedOutput schema / (root)
      Previous value: -{
      -  "$schema": "http://json-schema.org/draft-07/schema#",
      -  "additionalProperties": {},
      -  "description": "The JSON response of the NoMac API for this operation",
      -  "properties": {
      -    "error": {
      -      "additionalProperties": {},
      -      "description": "Present only when the call failed",
      -      "properties": {
      -        "code": {
      -          "description": "Stable machine-readable error code, for example insufficient_credit",
      -          "type": "string"
      -        },
      -        "message": {
      -          "description": "What went wrong and what to do next",
      -          "type": "string"
      -        }
      -      },
      -      "required": [
      -        "code",
      -        "message"
      -      ],
      -      "type": "object"
      -    }
      -  },
      -  "type": "object"
      -}New value: +null
  3. Added

TDQS

A4.1/5.0
Behavior4/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Annotations already declare destructiveHint=true and readOnlyHint=false, so the safety profile is covered. The description nonetheless adds useful detail beyond them: it removes deleted secrets, installs on a running Mac immediately, and is a manual trigger after human changes.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Two tight sentences, front-loaded with the action and scope before the nuance. No filler, though the second sentence could be marginally tighter.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness4/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a mutating tool with no output schema, the description covers what it does, when to invoke it, and the destructive/removal side effect. It omits edge cases such as behavior when no Mac is running, but nothing critical is missing for correct invocation.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 100%, so both names and session_id are already documented in the schema. The description echoes the names semantics ('on-request ones named in names') but adds no syntax, format, or behavior beyond what the schema provides, and does not mention session_id at all – baseline 3.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

States a specific verb (installs), concrete resources (secrets and signing identities) and a precise scope (on a running Mac, now). It is clearly separable from sibling request_secret, which requests rather than installs.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines4/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Gives an explicit trigger: 'call this after the human adds or changes one,' and explains the alternative path (a Mac gets every-Mac secrets automatically on ready), which tells the agent when NOT to call. It stops short of naming a competing tool explicitly, so 4 rather than 5.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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