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JSON Accept hint

by io.github.sadri-dridi
OverviewAdmin

utc-time

Current UTC timestamp.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
refNoGit ref name; discarded after the shape check
urlNoHTTPS URL to normalize or cite
cityNoCity name for a public weather hint; discarded after the call
feedNoPublic RSS or Atom URL; titles discarded
hostNoPublic hostname
jsonNoJSON text to validate; discarded after the check
pathNoFile path to check; no disk access
zoneNoIANA timezone name
queryNoSearch text; discarded after the length check

Schema Changelog

Changes observed during successful MCP inspections. Dates show when Glama detected each change.

  1. Changed5 schema fields changed
    • addedInput schema / properties / city
      Added value: +{
+  "description": "City name for a public weather hint; discarded after the call",
+  "type": "string"
+}
    • addedInput schema / properties / feed
      Added value: +{
+  "description": "Public RSS or Atom URL; titles discarded",
+  "type": "string"
+}
    • addedInput schema / properties / path
      Added value: +{
+  "description": "File path to check; no disk access",
+  "type": "string"
+}
    • addedInput schema / properties / query
      Added value: +{
+  "description": "Search text; discarded after the length check",
+  "type": "string"
+}
    • addedInput schema / properties / ref
      Added value: +{
+  "description": "Git ref name; discarded after the shape check",
+  "type": "string"
+}
  2. First observed

TDQS

C2.4/5.0
Behavior2/5

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

With no annotations provided, the description carries the full burden of behavioral disclosure, yet it only states what is returned. It does not clarify how the listed input parameters relate to the tool, whether any arguments are accepted or ignored, or what the output format is.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness3/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The single sentence is concise and front-loaded, but it is under-specified rather than efficiently complete. It omits essential context about parameters and usage, making it inadequate despite its brevity.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness2/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given 4 parameters, no annotations, and no output schema, the description is too skeletal for an agent to call the tool correctly. It fails to explain whether parameters should be passed, what the return format looks like, or how this tool relates to the timezone sibling.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters2/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Although schema description coverage is 100%, all four parameter descriptions (URL, host, JSON, zone) appear unrelated to a UTC timestamp operation. The tool description adds no meaning to these parameters and fails to explain which, if any, are meaningful for this tool.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose3/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description states that the tool returns the current UTC time, which is a clear resource, but it is a noun phrase without a verb and does not differentiate this tool from the sibling 'timezone' tool. The presence of unrelated parameters (url, host, json) further muddies what the tool actually does, lowering confidence.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

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 alternatives like timezone or iana-zones. It does not mention whether a zone parameter can be supplied or whether this tool is strictly for UTC-only needs, leaving usage entirely to inference.

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

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