Checkpoint ZipMem progress

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

No annotations provided, so description fully covers behavior: data is buffered durably, folded into memory on next session if no clean compaction. Clearly communicates that it is cheap and non-finalizing.

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?

Single well-structured paragraph. Key points emphasized with caps (PERIODICALLY, does NOT finalize). No wasted sentences; every part adds value.

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 5 parameters and no output schema, the description fully covers usage, behavior, durability, and recovery. For a checkpoint tool, it provides sufficient context 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 description coverage is 40% (only summary and project_dir have descriptions). The description adds high-level grouping ('blueprints/anchors/lessons + a running summary') but does not explain individual parameter meanings beyond what schema provides. Adequate but not comprehensive.

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 stages incremental progress for crash-safety. It distinguishes from sibling 'save_and_compact' by noting it does NOT finalize the session, providing a specific verb and resource context.

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 guidance to call PERIODICALLY after meaningful work units. Mentions it is cheap, does not finalize, and references the same fields as save_and_compact, helping the agent understand when to use it versus alternatives.

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