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osteele

timezone-mcp

by osteele
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Python
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Server Quality Checklist

67%
Profile completionA complete profile improves this server's visibility in search results.

  • Latest release: v0.1.0

  • Disambiguation5/5

    With only one tool, there is no possibility of confusion or overlap. The tool's purpose is clearly defined and unambiguous.

    Naming Consistency5/5

    The single tool name `convert_time` follows a clean verb_noun pattern, which is internally consistent.

    Tool Count3/5

    The server offers just one tool, which feels thin for a general timezone utility. While the core conversion feature is present, users might expect additional operations like timezone listing or validation.

    Completeness4/5

    The conversion operation is fully covered, but the surface lacks an explicit way to list available timezones or configured defaults, which would be a minor gap for a timezone-focused MCP.

  • Average 4.1/5 across 1 of 1 tools scored.

    See the Tool Scores section below for per-tool breakdowns.

    • No community issues in the last 6 months
    • 9 commits in the last 12 weeks
    • No stable releases found
    • No critical vulnerability alerts
    • No high-severity vulnerability alerts
    • No code scanning findings
    • CI is passing

  • This repository is licensed under MIT License.

  • This repository includes a README.md file.

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How is the quality score calculated?

The overall quality score combines two components: Tool Definition Quality (70%) and Server Coherence (30%).

Tool Definition Quality measures how well each tool describes itself to AI agents. Every tool is scored 1–5 across six dimensions: Purpose Clarity (25%), Usage Guidelines (20%), Behavioral Transparency (20%), Parameter Semantics (15%), Conciseness & Structure (10%), and Contextual Completeness (10%). The server-level definition quality score is calculated as 60% mean TDQS + 40% minimum TDQS, so a single poorly described tool pulls the score down.

Server Coherence evaluates how well the tools work together as a set, scoring four dimensions equally: Disambiguation (can agents tell tools apart?), Naming Consistency, Tool Count Appropriateness, and Completeness (are there gaps in the tool surface?).

Tiers are derived from the overall score: A (≥3.5), B (≥3.0), C (≥2.0), D (≥1.0), F (<1.0). B and above is considered passing.

Tool Scores

  • Behavior4/5

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

    With no annotations, the description discloses important behavioral traits: the omission of the source timezone when it would duplicate the input, and the inclusion of configured default timezones. These go beyond a simple 'convert' and provide useful behavioral context for an agent.

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

    Conciseness5/5

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

    The description is a single sentence that front-loads the core action and packs in key behavioral nuances. Every phrase earns its place, with no redundancy or fluff.

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

    Completeness3/5

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

    Although an output schema exists, the description does not explain the 'fold' parameter, which is crucial for ambiguous times around DST transitions. It also does not clarify default behavior when source_timezone is null. The description covers main purpose but is incomplete for a nuanced conversion tool.

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

    Parameters3/5

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

    Schema description coverage is 0%, so the description must compensate. It indirectly explains 'time' (timestamp), 'source_timezone', and 'output_timezones' via 'requested additional timezones'. However, the 'fold' parameter is entirely unexplained, and timezone/time format details are omitted. The description adds some meaning but leaves gaps.

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

    Purpose5/5

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

    The description clearly states the verb 'Convert' and the resource 'timestamp from a source timezone', making the primary purpose unambiguous. Even without sibling tools, it distinguishes the conversion task and hints at multi-timezone output.

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

    Usage Guidelines4/5

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

    The description provides clear context on behavior: it returns configured default timezones plus any requested additional timezones, and omits the source timezone when duplicated. This tells the agent what to expect, though it does not explicitly state when to use versus alternatives (no siblings exist).

    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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