Reconcile Purchase Ledger

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

Annotations provide readOnlyHint=true, and the description is consistent (a reconciliation is read-only verification). The description adds some context about what is verified (totals, stale reservations, status counts, hashes) which goes beyond the annotation. However, it doesn't disclose behavioral details like what happens when discrepancies are found, whether hashes are verified or just listed, or whether this has side effects such as marking stale reservations.

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 compact sentence conveys the tool's role efficiently, front-loading the core action. It's concise without being under-specified. Could potentially add a brief 'when to use' clause but remains lean.

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 0-parameter tool with a readOnly annotation and no output schema, the description covers the basic purpose. But given the ledger integrity domain and the sibling landscape (check_operational_integrity, workflow_sentinel, verify_claim), it would benefit from clarifying what 'reconcile' produces or triggers, especially around stale reservation handling, to distinguish it from other integrity tools.

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 tool has 0 parameters, so there's no schema to document. The baseline for 0-param tools is 4, and the description adequately explains what the tool does since no parameter guidance is needed.

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 action (reconcile) on a specific resource (purchase ledger) and lists the reconciliation aspects: totals, stale reservations, status counts, and tamper-evident hashes. However, it doesn't distinguish this from siblings like check_operational_integrity or workflow_sentinel, which could plausibly serve overlapping audit/reconciliation purposes.

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 guidance is provided on when to run reconciliation versus alternatives such as check_operational_integrity or verify_claim. The description implies a periodic/final reconciliation use case ('stale reservations') but never states it explicitly or names alternative tools for related integrity checks.

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