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

No annotations are supplied, so the description carries the full disclosure burden. It says a memory is stored, but never states whether duplicates are merged, whether a write requires a session, what identifiers are returned, or whether the operation is reversible — significant gaps for a mutation tool with zero annotation coverage.

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 or redundancy. Its brevity is appropriate in form, though the same brevity is the source of the specification gaps noted elsewhere.

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?

With five parameters, a nested object, no output schema, and no annotations, the one-line description is too thin. It should at minimum explain the metadata object's shape, the role of `session_id` and `event_date`, and what a caller gets back after storing.

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 only 20%: only `type` is documented (with an enum explanation). The description's parenthetical '(file, git, function)' hints at what belongs inside the nested `context_metadata` object, but `content`, `event_date`, `session_id`, and the structure of `context_metadata` are left undefined in both schema and description.

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?

States a specific verb and resource ('Store a new memory') plus the distinguishing qualifier 'with rich metadata context (file, git, function)'. This makes it separable from the plain `remember` sibling by implication, though the description never names or contrasts with that sibling explicitly.

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?

There is no when-to-use or when-not-to-use guidance, and no mention of the obvious alternative `remember` or of `recall` for reading. The agent must infer from the name alone that this variant is for memory writes that carry file/git/function provenance.

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