One Million Tools

unix_timestamp_convert

Convert a Unix timestamp (seconds or ms) to an ISO 8601 date string.

Tool call template

Replace each placeholder with a value matching the input schema. Only required parameters are included; add optional parameters as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {
      "input": "<input>"
    },
    "name": "unix_timestamp_convert"
  }
}

Input Schema

Name	Required	Description	Default
`unit`	No		seconds
`zone`	No		utc
`input`	Yes	Numeric Unix timestamp as a string.

Schema Changelog

Changes observed during successful MCP inspections.

First observedOct 21, 2026

TDQS

A3.8/5.0

Behavior3/5

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

No annotations are provided, so the description carries the full burden. It discloses the accepted input shapes and the output format, which is useful, but says nothing about the default unit/timezone behavior, invalid or out-of-range input handling, or that this is a pure side-effect-free computation. The core behavior is inferable, but several traits are left to the schema's defaults.

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?

A single sentence that front-loads the action, the input, and the output. Every clause earns its place with no filler.

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

Completeness4/5

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

With no output schema, the description correctly states the return type as an ISO 8601 string. For a simple pure converter this is nearly complete; the remaining gap is that it never addresses the zone parameter or default unit behavior, which matters for the accuracy of the returned string.

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 33% (only 'input' is documented), so the description must compensate. Saying 'seconds or ms' usefully explains the meaning of the unit enum values, but the zone parameter ('local' vs 'utc') is never mentioned and its default behavior is unexplained.

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 names a specific verb (Convert), a specific resource (Unix timestamp), the accepted input variants (seconds or ms), and the exact output format (ISO 8601 date string). No sibling tool does timestamp conversion, so no differentiation is needed, and an agent can tell instantly what this does.

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

Usage Guidelines3/5

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

Usage is implied by the description — you call this when you have a numeric Unix timestamp and want a human-readable date — but there is no explicit when-to-use guidance, no mention of edge cases, and no alternative tool referenced. With no near-neighbor sibling, the lack of routing guidance is tolerable but not helpful.

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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