batch_add_checkpoints

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

No annotations are provided, so the description carries the full burden. It only says 'Generate checkpoint and resume logic' without disclosing side effects (e.g., file modifications, dependency changes), whether an api_key is required for Pro access, or what output is produced. The 'Pro feature' hint suggests a paywall but is too vague to guide behavior.

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?

Extremely concise at six words plus a parenthetical. The core action and resource are front-loaded. The 'Pro feature' caveat is relevant, though it could arguably be moved to annotations. No wasted words, but the brevity leaves out needed context.

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?

Given two parameters (one undocumented), no output schema, and zero annotations, the description is inadequate. It does not explain what 'checkpoint and resume logic' entails, what the agent should pass for api_key, what 'directory' should contain, or what a successful invocation returns. The tool's name and description together only offer a high-level idea, not enough for reliable 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 50%, with 'directory' described as 'Project directory' in the schema but api_key entirely undocumented. The description adds no parameter-level meaning, failing to explain how api_key related to Pro access or how 'directory' is used. With a description lacking any parameter context, the agent gets little assistance beyond the schema's minimal 'Project directory'.

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?

Description states a clear resource ('checkpoint and resume logic') with the verb 'Generate', which distinguishes it from siblings like batch_add_progress. The 'Pro feature' note adds a licensing dimension. However, 'Generate' remains somewhat generic and does not specify whether it modifies files, configures libraries, or outputs code.

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?

No guidance on when to use this tool versus alternatives. It does not mention sibling tools like batch_add_progress or batch_generate_processor, nor does it describe the appropriate project state or prerequisites. The only contextual hint is 'Pro feature', which is not enough to route an agent to correct usage.

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