verify_upstream

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

With no annotations provided, the description must bear the full burden of disclosing side effects. It reveals a mutating operation (status flip) and a depth cap, but omits critical details: how non-IN_PROGRESS ancestors are handled, whether the child_id itself is modified, side effects on already-VERIFIED nodes, and error conditions. This is insufficient for a mutation tool.

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?

One short sentence with a compact verb phrase; no filler or redundant content. The key elements (traversal direction, status change, depth limitation) are packed efficiently, making it easily scannable.

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 mutation tool with no annotations or output schema, the description is minimal. It explains the algorithm but misses context like what the function returns, whether it is idempotent, how depth is determined, and what conditions might cause failure. An agent would be under-informed for safe invocation.

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?

The schema provides only the parameter name 'child_id' with no description (0% coverage). The description never explicitly connects child_id to the walking operation. While inferable from the tool name and 'ancestors', the semantics are not stated, leaving ambiguity about whether child_id is the starting node or something else.

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 ('Walk') and resource ('REFINEMENT ancestors') with an explicit status transition ('flip IN_PROGRESS → VERIFIED'). This clearly differentiates it from sibling tools like invalidate_upstream and generic update_status.

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?

No information about when to use this tool versus alternatives. It does not mention prerequisites, exclusions, or contextual triggers such as 'use when a claim's upstream dependencies need batch verification.' The depth-capped hint is a constraint, not usage guidance.

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