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?
With no annotations provided, the description carries the burden of behavioral disclosure. It does disclose the notable behavior that the body is discarded, implying a non-persistent operation. However, it does not mention what happens on invalid JSON, response format, or any side effects beyond discarding, so the disclosure is partial.
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 two sentences with no waste. The core action is front-loaded, and every sentence earns its place by adding either the operation or the discard behavior.
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 4 parameters, all optional, no output schema, and no annotations, the description is too sparse. It does not indicate which parameter is the JSON body, does not describe the return value, and leaves the role of url/host/zone unexplained. An agent would need to infer too much to invoke 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?
Schema description coverage is 100%, so the baseline is 3 even without additional parameter info in the description. The description's reference to 'body' maps loosely to the 'json' parameter, but it does not clarify which of the four parameters is relevant or how the unrelated url/host/zone fields should be treated. No meaningful new semantics are added beyond the schema.
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's function: checking whether a body is valid JSON. The verb 'check' and the resource 'valid JSON' make the purpose specific, and the name validate-json reinforces it. However, 'body' is ambiguous and the description does not explicitly differentiate from siblings, though siblings appear unrelated.
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 provides no guidance on when to use this tool versus alternatives, nor any conditions or exclusions. It simply states what the tool does without situating it among the sibling tools.
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.
Several tools have overlapping concerns: citation, normalize-url, and domain-shape all analyze URLs/hostnames, while timezone, utc-time, and iana-zones all relate to time. The purpose of compatibility is vague and could be confused with the URL inspection tools. Only a few tools like slug-ok and validate-json are clearly distinct.
All names use lowercase hyphenation, which is consistent, but the pattern is mixed: some are verb phrases (normalize-url, inspect-robots, validate-json), while others are bare nouns (citation, compatibility, timezone). There is no unified verb_noun convention, though the names remain readable.
Eleven tools is not an unreasonable count by itself, but the tool set is unfocused for a server named 'Slug character check.' Most tools address unrelated concerns such as time, URLs, HTTP status, and JSON, making the collection feel padded rather than purpose-built.
The server lacks a coherent domain: slug checking has only one thin tool, URL utilities have no encoding/decoding or query-param handling, and time utilities lack conversions or formatting options. For any single stated purpose, the surface has significant gaps and no end-to-end workflow.