used-tempon

A Python MCP server that lets you log time to Tempo (Jira time tracker) via natural language in Claude Desktop or OpenCode.

What it does

Four MCP tools are exposed:

Hours per day come automatically from Tempo's user schedule — respects your contracted hours, not a hardcoded 8h assumption.

Related MCP server: Jira MCP Server

Prerequisites

• Python 3.11+

• A Tempo Cloud account with API access

• A Tempo API token (see below)

Installation

git clone https://github.com/your-username/used-tempon.git
cd used-tempon
pip install -r requirements.txt

Configuration

Create ~/.tempo-config.json (this file is not committed — keep it private):

{
  "tempoToken": "your-tempo-api-token",
  "accountId": "your-atlassian-account-id",
  "issueIds": {
    "PROJECT-1": 10001,
    "PROJECT-2": 10002,
    "PROJECT-3": 10003,
    "PROJECT-4": 10004
  },
  "presets": {
    "usual": [
      {"issueKey": "PROJECT-1", "percentage": 50, "description": "Feature work"},
      {"issueKey": "PROJECT-2", "percentage": 50, "description": "Support"}
    ],
    "sick": [
      {"issueKey": "PROJECT-3", "percentage": 100, "description": "Sick leave"}
    ],
    "vacation": [
      {"issueKey": "PROJECT-4", "percentage": 100, "description": "Vacation"}
    ]
  }
}

You can also set the token via environment variable (takes precedence over the config file):

export TEMPO_TOKEN="your-tempo-api-token"

How to get a Tempo API token

Go to Tempo → Settings → API Integration: https://app.tempo.io/settings/api-integration

Generate a new token and copy it into tempoToken in your config file.

How to find issue IDs

The Tempo API requires the numeric integer issue ID, not the string issue key (e.g. PROJECT-123).

To find the numeric ID for an issue:

• Call the Jira REST API: GET /rest/api/3/issue/PROJECT-123 and look at the id field

• Or inspect existing Tempo worklogs via GET https://api.tempo.io/4/worklogs — each worklog contains "issue": {"id": 12345, "key": "PROJECT-123"}

How to find your Atlassian account ID

• Visit your Jira profile page (click your avatar → Profile)

• Or call GET /rest/api/3/myself — the response includes "accountId"

Optional: Jira credentials for user name search

To log time or check workload for another person by name (e.g. "log usual for Alice"), add Jira credentials to ~/.tempo-config.json:

{
  "jiraBaseUrl": "https://yourorg.atlassian.net",
  "jiraEmail": "you@example.com",
  "jiraToken": "your-jira-api-token"
}

These fields are optional. Without them, you can still log for others by passing their Atlassian account ID directly (e.g. "log usual for 712020:abc123").

Get a Jira API token at: https://id.atlassian.com/manage-profile/security/api-tokens

Register in Claude Desktop

Add to ~/Library/Application Support/Claude/claude_desktop_config.json:

{
  "mcpServers": {
    "tempo": {
      "command": "/path/to/python3",
      "args": ["/path/to/used-tempon/mcp_server.py"]
    }
  }
}

Replace /path/to/python3 with your Python 3.11+ binary (e.g. from which python3 or pyenv which python3).

Register in OpenCode

Add to ~/.config/opencode/opencode.json:

{
  "mcp": {
    "tempo": {
      "type": "local",
      "command": "/path/to/python3",
      "args": ["/path/to/used-tempon/mcp_server.py"]
    }
  }
}

Restart Claude Desktop or OpenCode after editing the config.

Usage

Once registered, use natural language in Claude or OpenCode:

"log usual"                               → logs today using the "usual" preset
"log sick for yesterday"                  → logs sick leave for yesterday
"log vacation for 2026-03-15"             → logs vacation for a specific date
"check my workload for today"             → shows logged vs expected hours
"what's my tempo config?"                 → shows configured presets and issue mappings
"log usual for 2026-02-20 force"          → logs even if entries already exist
"log usual for Alice"                     → logs today for Alice (requires Jira credentials)
"check workload for Bob Smith"            → checks Bob's workload (requires Jira credentials)
"search user alice"                       → finds Jira users matching "alice"
"log sick for 712020:abc123"              → logs for a specific accountId (no Jira creds needed)

Behaviour notes

• Contracted hours: Total hours come from Tempo's user schedule for that day — not hardcoded 8h

• Preset splits: Percentages in each preset are applied to the day's required seconds (e.g. 50/50 on a 6h45m day = 3h22m30s each)

• Duplicate detection: Warns if entries already exist for a date; use force=True to log anyway

• Weekend/holiday guard: Warns if Tempo says no hours are required for that day; use force=True to override

• Cross-user logging: Pass person as a display name (requires Jira credentials) or raw accountId to log/check for someone else

File structure

used-tempon/
├── mcp_server.py     # FastMCP server with MCP tools
├── tempo_api.py      # Pure Tempo REST API client
├── requirements.txt  # Python dependencies
└── README.md         # This file

~/.tempo-config.json lives outside the repo and is never committed.

License

MIT