nexo_checkpoint_save

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

No annotations exist, so the description fully handles transparency. It explains the checkpoint is re-injected by PostCompact hook, revealing the behavioral flow. Does not mention side effects like overwriting, but for a save operation this is acceptable.

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?

Three sentences, each purposeful: first states action, second and third add usage and context. No fluff, well front-loaded.

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?

The description sufficiently explains the tool within its context (auto-compaction). While no output schema is present, the description covers the main behavior and necessary sequence. Could mention return value, but not a major gap.

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 100%, so description adds minimal extra parameter meaning beyond schema. However, it provides workflow context that indirectly helps understand parameter usage.

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 the tool saves a session checkpoint for auto-compaction continuity, with a specific verb ('Save'), resource ('session checkpoint'), and distinguishes from sibling tools like nexo_checkpoint_read.

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?

Explicitly instructs to call this tool 'BEFORE context compaction', providing clear when-to-use guidance. It does not list alternatives or when-not-to-use, but the context is strong enough.

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