register_playbook

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

With no annotations, the description carries full behavioral burden. It discloses one useful semantic trait (playbooks are non-normative), but says nothing about permissions, mutation effects, idempotency, or what happens on duplicate keys for what is clearly a registration/mutation tool.

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?

Two tight sentences with the core purpose front-loaded and zero wasted words. It is efficient, though arguably under-specified rather than over-long.

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?

An output schema exists so return values need not be explained, but the description is inadequate for an 8-parameter mutation tool with no annotations and zero parameter documentation in the schema. Essential invocation context is missing.

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 description coverage is 0% across 8 parameters (4 required), and the description adds no meaning for any of them. For a tool with playbook_key, version, description, source, applicability, and required_capabilities, this leaves every parameter's semantics undocumented.

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?

The description states a specific verb and resource ('Register procedural Playbook metadata'), which is clear and distinguishable from sibling select_playbook. The second sentence adds a scope constraint, but there is no explicit sibling differentiation.

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?

There is no guidance on when to use this versus alternatives such as select_playbook, nor any prerequisites or exclusions. The note that playbooks 'never become normative project truth' hints at scope but does not tell the agent when to invoke the tool.

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