Use an approved local environment secret in memory

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

Annotations already mark it as readOnlyHint=true, but the description adds crucial behavioral context: it does not return, log, or expose the secret on the command line. This goes beyond annotations to assure safety, though it doesn't fully detail the HMAC computation steps.

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 dense sentence that packs key information (action, resource, constraints). It is front-loaded with the main action. However, it could be broken into sentences for clarity, but it is not overly verbose.

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?

With 6 parameters (3 required), an enum for operations, and no output schema, the description should provide more context on operation behaviors (e.g., what 'presence_check' does) and output encoding options. It is insufficient for an agent to fully understand tool behavior.

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 coverage is only 33%, and the description adds no parameter-level detail. It fails to explain the meaning of fields like payload, outputEncoding, or the operation enum values. The description must compensate for low schema coverage, but it does not.

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 specifies the tool's action ('Checks... or computes a digest/HMAC') and resource (approved Laravel .env key). It distinguishes itself by listing what it does NOT do (returning, logging, placing on command line, writing secret), which differentiates it from sibling tools like read_file or run_command.

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 implies using this tool for secure secret operations without exposure, but does not explicitly state when to use it over alternatives or when not to use it. Given the sibling list includes many command-execution tools, more direct guidance would be beneficial.

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