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

Annotations already declare readOnly, idempotent, non-destructive and open-world, so the safety profile is covered. The description adds semantic framing ('the texts the cell acts under') but does not disclose whether the texts are static or mutable, whether access is gated, or how they are returned (the output schema covers the return shape).

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 sentence with no filler, and the content enumeration is front-loaded. The fragmentary noun-phrase construction is slightly harder to parse than an explicit verb phrase would be.

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 one-parameter lookup tool with rich annotations and an output schema, the description supplies the essential content vocabulary. It still omits which sibling tool to prefer for status versus content, leaving a small completeness 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 description coverage is 0%, so the description must compensate, and it largely does: its four listed texts map one-to-one onto the four enum values (foga-cell-v1, policy, compatibility-matrix, cell-config-schema). The mapping is positional rather than explicit, leaving minor ambiguity about which label binds to which enum string.

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 names the four concrete texts retrievable (safety spec, policy block, compatibility matrix, config schema), and pairs with the name/title 'spec_read' / 'Read a rule text' to convey the verb. However, the sentence itself is a noun phrase with no explicit verb, and it does not distinguish this tool from siblings like safety_status or docs_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?

The description gives no when-to-use or when-not-to-use guidance and never references an alternative such as safety_status or world_describe. An agent must infer from the document names alone which situations call for spec_read.

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