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

With no annotations and no output schema, the description carries the full burden. It usefully discloses a real cost gate ('100 sats via L402'), which is genuine behavioral context. However, it leaves a critical ambiguity unresolved: whether the tool only plans/maps sequences or actually executes the MCP calls and JSON-RPC payloads, and what the response looks like.

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; the scoping clause and the cost parenthetical both earn their place. Slightly dense grammar (nested 'to ... and ... (cost)') costs it a point but nothing is wasted.

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?

For a single-parameter routing tool with no annotations and no output schema, the description covers purpose and cost but omits the execute-vs-plan distinction and any indication of the return payload. It is minimally adequate rather than complete.

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 100% and there is only one parameter ('objective', described in-schema), so the schema already does the work. The description adds no format, constraint, or example meaning beyond it, making the baseline 3 appropriate.

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: maps agent goals to deterministic MCP tool call sequences and JSON-RPC 2.0 payloads. That is far more concrete than a tautology, but it never names or contrasts itself with near siblings like agent_schema_enforcer or eve_gate_route_planner, so an agent must infer the boundary.

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 guidance, no when-not-to-use, and no alternative named. The agent learns what the tool produces but nothing about the conditions that should select it over the many sibling routing/planning tools.

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