Excel Finance MCP

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

No annotations are provided, so the description carries the full burden of behavioral disclosure. It mentions 'full compliance documentation and audit trail,' hinting at output behavior, but doesn't describe critical traits like whether this is a read-only analysis or a write operation that creates records, what permissions are needed, error handling, or rate limits. For a complex financial compliance tool with zero annotation coverage, this is inadequate.

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 a single, efficient sentence that front-loads the core purpose. It avoids unnecessary words and gets straight to the point, though it could be slightly more structured by separating compliance aspects from processing details.

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?

Given the tool's complexity (involving nested objects for contracts, performance obligations, and payment terms), lack of annotations, and no output schema, the description is insufficient. It doesn't explain what the tool returns, how errors are handled, or the scope of 'process' (e.g., calculation vs. reporting). For a high-stakes compliance tool, more context is needed.

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 description adds no parameter-specific information beyond what the input schema provides. With a schema description coverage of 33% (low), the description doesn't compensate by explaining the semantics of 'contracts', 'asOfDate', or 'worksheetName'. However, since there are only 3 parameters and the schema covers them partially, the baseline is met but not exceeded.

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 clearly states the tool's purpose: 'Process revenue recognition under ASC 606 with full compliance documentation and audit trail.' It specifies the verb ('process'), resource ('revenue recognition'), and compliance context. However, it doesn't explicitly differentiate from sibling tools like 'compliance_audit_preparation' or 'compliance_sox_controls_test', which are also compliance-related.

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?

The description provides no guidance on when to use this tool versus alternatives. It mentions 'ASC 606' as a context, but doesn't specify prerequisites, when-not-to-use scenarios, or compare it to sibling compliance tools. This leaves the agent without clear usage direction.

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