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

With no annotations, the description carries the full burden, and it does well: it explains the non-obvious two-step pay flow, the meaning of a missing transaction, the preview teaser behavior, and the need to verify available actions. It does not disclose irreversibility, side effects, or failure modes beyond the available_actions check, which prevents a 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?

The description is dense but efficiently structured with role groups, pipe-separated action signatures, and a compact payment note. Every sentence adds needed operational detail, and the most important guiding instruction ('Check get_job.available_actions first') is placed at the end as a safety check.

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 tool with 9 parameters, no annotations, and no output schema, the description covers role permissions, parameter mapping, and the tricky payment flow. It is slightly incomplete because it does not describe return values for most actions or the consequences of irreversible transitions, but it directs the agent to get_job for state validation, which mitigates the gap.

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 high at 78%, and the description reinforces the action-to-parameter mapping. Its main added value is the pay/transaction behavior: calling pay without transaction returns payment terms, then pay with the transaction hash completes the payment. This goes beyond the schema and meaningfully clarifies how to use the transaction and price parameters.

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 opens with a specific verb and object ('Perform one transition') and then enumerates every valid action by role. This clearly differentiates the tool from job-creation, listing, and messaging siblings by scoping it to state transitions on a single job.

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?

Role-specific action lists provide clear context for when each action is valid, and 'Check get_job.available_actions first' gives an explicit precondition. It does not name alternative tools such as dispute_action or bounty_action, so it lacks explicit when-not/alternative routing, but the usage context is otherwise strong.

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