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 discloses a side effect: 'The body is discarded.' However, it does not explain other behaviors, such as whether the tool reads from the 'url' or 'host' parameters, or why 'zone' is needed. Given the mismatch between the description and the schema, transparency is limited and potentially misleading.
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 concise, using only two short sentences to convey the core function. It avoids unnecessary words and is well-structured for a brief tool description.
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 description is severely incomplete given the complex schema with four parameters and the presence of sibling tools. It does not explain the purpose of the extra parameters or how the tool integrates with other tools, making it inadequate for an agent to correctly invoke it.
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 schema descriptions for parameters are inconsistent with the tool's purpose. For example, 'url' is described as 'HTTPS URL to normalize or cite' and 'zone' as 'IANA timezone name', which are unrelated to JSON validation. The description offers no clarification on these parameters, leaving an agent unable to determine their role.
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, providing a specific verb and resource. However, the term 'body' is somewhat ambiguous without additional context, and the description does not clarify what constitutes a body in terms of the input parameters.
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 alternative tools. No mention of scenarios where validation is appropriate, nor any comparison to sibling tools like 'normalize-url' or 'timezone'. The description provides no usage direction.
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.
Tools are mostly distinct, but `timezone` and `tz-europe-amsterdam` overlap heavily, and `domain-shape`/`normalize-url` both inspect hostnames, creating potential ambiguity.
All names use lowercase kebab-case, but they mix noun labels (`citation`, `status-catalog`, `timezone`) with verb-action names (`inspect-robots`, `normalize-url`, `validate-json`), so no consistent pattern emerges.
Eleven tools is within a typical range, but the set combines URL inspection, timezone, and JSON validation unrelated to the apparent clock/time focus, making the count feel padded.
For a clock/time server, it provides current UTC, named timezone, and Europe/Amsterdam time, but lacks conversion or formatting operations; the unrelated URL/JSON tools do not fill that gap.