Delimit Loop Config

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

The description discloses that this tool writes loop session config via ai.loop_engine.loop_config and reveals the partial-update behavior: only non-zero/non-empty values are applied. This adds meaningful behavioral context beyond the readOnlyHint/destructiveHint annotations, especially the pass-only-what-you-want-to-change rule.

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?

The description is compact, scannable, and front-loaded with the core purpose. Every section earns its place: purpose, usage timing, exclusions, sibling contrast, and side effects. No filler or repetition.

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 the seven optional parameters, the rich schema descriptions, and an output schema, the description covers everything an agent needs: what the tool does, when to use it, what it writes, and how the config update behaves. The partial-update caveat is especially valuable and not inferable from the schema alone.

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 100%, so the schema already documents each parameter. The description adds important cross-cutting semantics by explaining that non-zero/non-empty values are applied and only changed fields need to be passed, which clarifies the optional/default param behavior.

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 clearly states a specific verb ('Configure') and resource ('autonomous build loop safeguards'), and distinguishes itself from delimit_loop_status (reads metrics) and delimit_build_loop (runs the loop). An agent can immediately tell what this tool does and what it does not do.

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?

Explicit 'When to use' and 'When NOT to use' sections name the exact alternative tools and the condition that selects between them. The instruction to call this BEFORE starting a loop session provides clear timing guidance.

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