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HSL tuple shape

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

D1.3/5.0
Behavior1/5

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

There are no annotations and no description of side effects, return format, or whether the tool is read-only. The presence of irrelevant input parameters without explanation further obscures the tool's behavior.

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

Conciseness2/5

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

The description is extremely short, which is concise, but it omits essential information about parameters, usage, and output. It is more under-specified than concise.

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

Completeness1/5

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

The tool lacks an output schema and any contextual information about expected input, return values, errors, or relationship to sibling tools. It is not complete enough for an agent to call correctly.

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

Parameters1/5

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

The schema descriptions for url, host, json, and zone are generic and unrelated to obtaining a UTC timestamp. No explanation connects these parameters to the tool's purpose, so their meaning is effectively undefined.

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

Purpose2/5

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

The description 'Current UTC timestamp' indicates the tool returns a UTC timestamp, but it is phrased as a noun phrase rather than a clear verb-based action. The input schema contains unrelated parameters (url, host, json, zone), which creates confusion about the tool's actual purpose.

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

Usage Guidelines1/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

No guidance is provided on when to use this tool versus the sibling tools, nor is there any mention of whether arguments are needed or should be ignored. The unrelated schema parameters make usage even less clear.

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

All HSL tuple shape toolsInspect
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