memory_task_checkpoint

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

Annotations already declare readOnly=false, destructive=false, idempotent=false, and openWorld=false. The description adds only that a single checkpoint is appended to an existing open task; it says nothing about what happens if the task is closed, whether repeated calls accumulate entries, or what the write returns. Against a fairly complete annotation set, that is a moderate contribution.

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?

A single front-loaded sentence with no filler, and the key scoping constraint lands immediately. It is efficient, though the brevity tips into under-specification rather than pure concision.

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?

For a 7-parameter mutation tool with no output schema and zero parameter descriptions, one sentence is not enough. The description conveys the action and the target but leaves the entire payload structure — the four content arrays and the project_root/task_id addressing scheme — undocumented anywhere in the definition.

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?

Seven parameters with 0% schema description coverage and no enums, and the description names none of them. The four optional arrays (evidence, decisions, next_steps, constraints) are entirely opaque — an agent cannot tell from the definition what belongs in each or whether they are mutually redundant, so the description fails to compensate for the missing schema documentation.

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?

"Write one checkpoint to an open task in this project" gives a specific verb (write) and resource (checkpoint) plus the scoping object (task). It is clear what the tool does, though it never distinguishes itself from the sibling memory_checkpoint, so an agent must infer the difference between a task-scoped and a general checkpoint.

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?

"to an open task" implies the precondition that the task must already exist and be open, which is the closest thing to usage guidance here. There is no explicit statement of when to use this versus memory_checkpoint, memory_task_context, or memory_close_task, and no mention of the write-once-per-checkpoint cadence an agent should follow.

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