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

With no annotations, the description carries the full burden and does well: it discloses that the memory remains the current head, is still returned by recall, and 'reads as contested', plus the non-obvious counting rule (ten copies = one ground, count is not a vote). It omits auth/permission requirements and whether objections can later be resolved or expire, so it falls short of full behavioral 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?

Front-loaded with the core action and its key constraint, then the required param, then the counting caveat, then routing guidance. Four short sentences with no filler; every sentence carries distinct, decision-relevant information.

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?

There is no output schema, so the description must explain effects, which it does (memory stays head, still recalled, reads as contested). It leaves the relationship to the existing memory_resolve_objection sibling and auth requirements unaddressed, but is otherwise sufficient 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 coverage is 50%; id and api_key are documented nowhere. The description reinforces grounds as required and glosses it ('on what basis'), adding marginal value, but the two remaining parameters are left entirely unexplained by both description and schema.

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?

Specific verb+resource: 'Raise an objection to a memory', immediately scoped as a challenge that does NOT supersede it. This cleanly distinguishes it from memory_update ('instead of forcing a correction') and from any sibling that resolves objections, without needing to open another schema.

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?

The description gives an explicit when-to-use ('use this for disputed, unsettled') and a when-not ('instead of forcing a correction'), which routes the agent away from memory_update. The supersession boundary (memory stays head) further disambiguates from tools that change state.

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