Read File Contents

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

Annotations already cover the read-only, idempotent, non-destructive profile. The description adds genuine value beyond that: automatic file-type detection, security validations on reads, and automatic blocking of sensitive files (passwords, keys, credentials). That blocking behavior is a meaningful disclosure not present in annotations, though it stops short of saying what the blocked response looks like. No contradiction with annotations.

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?

Four tidy sentences with the core purpose front-loaded. No fluff, but the security-screening behaviors could be compressed; still well within an acceptable length for a tool with seven parameters.

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 100% schema coverage and rich annotations, the description covers most of what an agent needs: encodings, security checks, sensitive-file blocking. The main gap is the overlap between limit and maxBytes (both are max-byte constraints), which could mislead an agent making a call. Output schema absence is acceptable for a read tool whose return shape is implied by response_format.

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 100% and well-written (defaults, max bytes, enums all documented), so baseline is 3. The description's mention of text/binary/base64 encodings restates the encoding enum rather than adding new meaning. It adds nothing about the limit-vs-maxBytes ambiguity, where both parameters describe byte caps.

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?

States a specific verb+resource ('Read file contents') and adds security as a distinguishing characteristic. However, it doesn't differentiate from the sibling file_organizer_batch_read_files, which also reads files, so an agent can't tell single-file from batch reads without checking both schemas.

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 on when to use this tool versus file_organizer_batch_read_files or the other 26 siblings. No exclusions, no prerequisites, no mention of file-system permission caveats. The agent gets no help choosing between single-file and batch reading.

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