Register admin

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

Annotations already declare the safety profile (not read-only, not idempotent, not destructive). The description adds the meaningful context that this bootstraps the initial admin, but omits key behavior: whether authentication is required for this endpoint, and what happens if an admin already exists. With annotations carrying safety, a 3 is appropriate.

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

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

Short and front-loaded, with the operative sentence 'Create the first admin user' appearing immediately. The first line merely repeats the title field, which is minor redundancy, and the trailing operation/tag line is boilerplate.

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

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

For a bootstrap endpoint the agent still needs to know whether it requires auth and whether it errors when an admin already exists; neither is stated. Annotations cover the safety profile and no output schema exists, so the remaining gap is moderate rather than severe.

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

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

Schema coverage is nominally 100%, but the schema descriptions are placeholders like 'name (request body)' that add no real meaning. The description adds nothing about parameter constraints (e.g. password requirements). Baseline 3 applies since the schema nominally documents all three params.

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

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

States a specific verb+resource and adds the discriminating scope 'the first admin user in the system', which separates it from the sibling immich_create_user_admin. It does not explicitly name that sibling, so it falls short of a 5.

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

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

The phrase 'first admin user' implies a one-time bootstrap/setup context, but the description never states when to use this versus immich_create_user_admin, nor any precondition (e.g. no admin exists yet). Usage is only implied.

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