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

With no annotations provided, the description carries the full burden and does so well: it discloses that the endpoint returns 501, creates nothing, and is disabled pending rebuilt per-recipient safety checks. That is exactly the behavioral context an agent needs to avoid a failed call.

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?

The critical information is front-loaded: disabled, returns 501, do not call, and alternatives. The trailing OpenAPI-style '200 Successful Response' boilerplate is unnecessary and somewhat misleading for a tool that actually returns 501, but the core message is tight.

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 that this is a disabled tool with no output schema and no annotations, the description is complete for its practical purpose: it prevents invocation and redirects to working alternatives. Detailed parameter semantics are less relevant because the tool cannot currently be used.

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?

There are two required parameters at 0% schema description coverage, and the description does not explain name, steps, kind, template, or delay_days semantics. The phrase 'multi-step sequences' hints at the steps concept but does not compensate for the missing parameter 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?

The description states a specific verb and resource (create a multi-step sequence) and immediately clarifies effective behavior: the tool is disabled and creates nothing. It also distinguishes itself from the alternatives by naming schedule_manual_dm and schedule_chat_reply.

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?

It gives an explicit prohibition — 'Do not call this' — and names concrete alternatives with the condition that selects them: approve one message now and schedule later follow-ups with schedule_manual_dm or schedule_chat_reply using a later send_at.

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