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

Adds substantial context beyond readOnlyHint/openWorldHint: the tool mutates nothing, omitting organization_id auto-selects the sole org or is refused with an org list, and the return value is the upstream JSON. The refusal-with-list behavior is exactly the kind of runtime trait annotations cannot convey, though the conformance requirement for `arguments` is only asserted, not elaborated.

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-loads the read-only scope and then the routing rule, so the most decision-relevant facts come first. Slightly dense in the middle clause about `risk`/`call_with`, but no sentence is 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?

Despite the passthrough nature and no output schema, the description states the return value, the required conformance of `arguments`, org scoping fallbacks, and cross-tool routing — everything an agent needs to invoke it correctly or recover from a refusal.

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?

With 0% schema description coverage the description must carry the load, and it covers organization_id thoroughly (single-org auto-selection vs multi-org refusal and retry) and constrains `arguments` to the operation's inputSchema. However, `name` — the one required parameter — is never explicitly defined as the operation identifier, leaving it only implied.

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 plus the resource class: "Invoke an Anyreach operation that only reads: lists, details, transcripts, metrics, searches and previews. Changes nothing." This cleanly separates it from the mutation-oriented siblings call_create_tool and call_change_tool without needing their schemas.

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?

Explicitly routes the agent: each operation's `risk` and `call_with` (from search_tools or describe_tool) name the single call tool that runs it, and the other call tools refuse it — a clear when-to-use and when-it-will-fail rule with the discovery path named.

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