Check whether a body is valid JSON. The body is discarded.
| Name | Required | Description | Default |
|---|---|---|---|
| url | No | HTTPS URL to normalize or cite | |
| host | No | Public hostname | |
| json | No | JSON text to validate; discarded after the check | |
| zone | No | IANA timezone name |
Changes observed during successful MCP inspections. Dates show when Glama detected each change.
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
The description mentions the body is discarded but does not explain what happens with the url, host, or zone parameters. It also does not disclose whether the tool makes network calls, returns errors, or has side effects. Since there are no annotations, the description carries the full burden and falls short.
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 brief and contains no fluff. Each sentence serves a purpose, but the ambiguity around 'body' and the unrelated parameters could have been clarified without much extra text.
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?
The tool is simple in concept, but the return value is not specified (e.g., boolean, error message), and the presence of unrelated parameters makes the intended input unclear. This leaves important gaps for an agent trying to use the tool correctly.
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 'json' parameter is adequately described, but 'url', 'host', and 'zone' have descriptions that appear copied from other tools and are irrelevant to JSON validation. While every parameter has a schema description, the descriptions are misleading and do not clarify how these parameters relate to the tool's function.
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 checks whether a body is valid JSON and discards it, which aligns with the tool name. However, the term 'body' is ambiguous and the input schema includes unrelated parameters like url, host, and zone, so the true purpose is only partially clear.
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 guidance on when to use this tool versus the sibling tools. No conditions, prerequisites, or examples are provided, leaving the agent to guess the appropriate context.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
Add one secure layer between your agents and this server.
Each tool has a distinct purpose (country code, URL manipulation, timezone, JSON validation, etc.) with no overlapping functionality, so there is no ambiguity in selecting the right tool.
All names use lowercase with hyphens, but the pattern is inconsistent: some are noun-only (e.g., 'cc-jp', 'iana-zones') while others are verb-noun (e.g., 'normalize-url', 'validate-json'). The style is uniform but the grammar is mixed.
With 11 tools, the count is reasonable, but the collection feels like a random assortment of utilities rather than a focused feature set, making the size slightly unjustified.
There is no coherent domain to evaluate completeness against. The tools span unrelated areas (ISO, HTTP, timezones, JSON, robots), so the set is incomplete for any single purpose and lacks a clear scope.