clockify-mcp

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Log a finished time entry

log_time

Backfill missing time logs by creating completed Clockify entries for past work intervals, leaving the running timer untouched.

Instructions

Create a completed Clockify time entry for a past interval. Use this to back-fill work you did not time live. Does not touch the running timer.

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": {
      "description": "<description>",
      "start": "<start>",
      "end": "<end>"
    },
    "name": "log_time"
  }
}

Input Schema

Name	Required	Description
`end`	Yes	When the work ended.
`start`	Yes	When the work started.
`tagIds`	No	Tag ids from list_tags.
`taskId`	No	Task id from list_tasks.
`billable`	No	Mark the entry billable.
`projectId`	No	Project id from list_projects.
`description`	Yes	What the work was.

Schema Changelog

Changes observed during successful MCP inspections.

First observedv1.0.0Sep 9, 2026

TDQS

A4.6/5.0

Behavior5/5

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

While annotations indicate a write operation (readOnlyHint=false) and non-destructive (destructiveHint=false), the description adds critical behavioral detail about side effects: it explicitly states the tool does not interact with the running timer, which is beyond the annotation scope and informs the agent about concurrent state changes.

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 two concise sentences that directly state the purpose, usage context, and a key side-effect. There is no extraneous information, making it highly efficient and well-structured for rapid comprehension.

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?

The description provides essential context (back-filling and non-interference with the running timer) and is sufficient given the simple schema. It does not mention prerequisites or fallback behavior, but those are not necessary for this straightforward create operation, so it is nearly complete.

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 100%, with each parameter having a brief but clear description. The tool description itself does not add extra insight into parameter meanings or relationships beyond what the schema already provides, so it meets the baseline but does not exceed it.

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 ('Create') and the resource ('completed Clockify time entry for a past interval'), and explicitly contrasts with the running timer, making it distinct from sibling tools like start_timer and current_timer. The phrase 'back-fill work you did not time live' unambiguously captures the intended use.

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

Usage Guidelines5/5

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

The description provides explicit guidance on when to use the tool ('to back-fill work you did not time live') and explicitly states what it does not do ('Does not touch the running timer'), which helps an agent decide when it is appropriate and when to use alternatives like start_timer or stop_timer.

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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