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

With no annotations at all, the description carries the full burden and does real work: it discloses that capital gets deployed per roster weights and risk caps, that the main platform router is paused while active, and that the rationale is published publicly on the manager's log. Missing are permissions/prerequisites (fund must exist and be inactive) and reversibility, which is why it stops short of 5.

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 action, then the behavioral consequence, then a compact Args block. Every sentence earns its place; only the trailing 'Returns success or error' is low-value filler.

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?

An output schema exists, so return values needn't be spelled out, and both parameters plus the key side effects are covered. The remaining gap is preconditions — that the fund must exist and currently be inactive, and what happens if activation fails.

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 0%, so the description must compensate, and it does: fund_id is identified as the fund's ID and rationale is marked REQUIRED with the consequential detail that it is published on the fund's public manager's log — information found nowhere in the schema. It leaves the integer/identifier format to the schema, which is acceptable.

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 (activate Manager Mode for a fund) and immediately explains the mechanism: it starts the personal router and deploys capital across the fund's roster bots. That distinguishes it in practice from deactivate_fund and run_ai_manager, though no sibling is named 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?

The 'going live' framing and the note that the main platform router is paused imply when to use it, but there is no explicit when-to-use/when-not guidance and no named alternative (deactivate_fund, run_ai_manager) for the agent to route against.

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