Hedgehog

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

No annotations provided, so description carries full burden. Explains the core behavioral trait: checkpoints enable rollback to previous states. Missing operational details like: whether duplicate names overwrite existing checkpoints, persistence guarantees, or side effects on current state. Output schema exists, mitigating need to describe return values.

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?

Excellent structure: single-sentence purpose declaration, value proposition sentence, then Args block. Front-loaded with critical information. No redundant words. Appropriate length for 2-parameter tool.

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?

Adequate complexity coverage given 2 simple parameters and existence of output schema (no need to detail return values). Parameter semantics covered via Args section. Minor gap in workflow integration (relationship to `spike_rollback`), but sufficient for correct invocation.

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 0% (no property descriptions), but the Args section compensates effectively by documenting both parameters: 'name' identifies the spike, 'label' is human-readable. Adds clear semantic meaning beyond the bare schema titles. Could improve by noting if name must be unique or referencing existing spike.

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?

Clear verb ('Create') and resource ('checkpoint of the current spike state'). Explains the checkpoint concept and its purpose (rollback). Distinguishes from general spike creation via 'spike state' terminology, though could more explicitly differentiate from sibling `spike_rollback` and `spike_create`.

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?

Provides implicit guidance by describing when checkpoints are valuable ('if exploration goes down an unproductive path'), indicating it should be used before risky changes. However, lacks explicit workflow guidance on when to use vs `spike_rollback` or prerequisites (e.g., requiring an active spike).

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