colors_parseParse and validate a color string to confirm its format is correct. Use it to verify color inputs before converting, mixing, or adjusting them.
Parse and validate a color string
| Name | Required | Description | Default |
|---|---|---|---|
| color | Yes | Color string to parse and validate |
Changes observed during successful MCP inspections.
v1.1.0Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint=true, idempotentHint=true, and destructiveHint=false, so the safety profile is fully covered structurally. The description adds nothing behavioral beyond that — it does not say what 'validate' means (exception vs. boolean vs. normalized output) or which color formats are accepted.
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 short sentence with the action front-loaded and zero filler. It is efficient, though arguably under-informative rather than genuinely concise.
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 full schema coverage, safety annotations, and no output schema, the surface-level contract is covered. But for a parse/validate tool the accepted input formats and failure behavior are the key things an agent needs, and neither is addressed.
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% for the single 'color' parameter, so the schema carries the meaning. The description adds no format examples (hex, rgb, named) or constraints beyond what the schema already states, making this the baseline 3 for high-coverage schemas.
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 pairing (parse and validate) on a single clear resource (color string), so the agent knows it takes a string and produces a validated result. It does not, however, distinguish itself from siblings like colors_convert or colors_difference, which also take color strings.
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?
There is no when-to-use guidance, no indication of how this differs from colors_convert, and no mention of what happens on invalid input. The agent must infer usage purely from the name.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.