Jira Worklog

A small local MCP server for Jira Cloud worklogs — the piece the Atlassian MCP doesn't cover. Pairs with toggl-mcp to push tracked time into Jira at the end of the day.

Tool	What it does
add_worklog	Log work on an issue (POST /issue/{key}/worklog).
list_worklogs	List an issue's worklogs (verify / check for duplicates).
whoami	Confirm the configured credentials.

The Jira quirks are baked in: Basic-auth, the started format yyyy-MM-dd'T'HH:mm:ss.SSSZ (offset without a colon, no bare Z), and ADF-wrapped comments.

Prerequisites

• Node.js 18+.
• A Jira API token — create one at https://id.atlassian.com/manage-profile/security/api-tokens.
• Your Atlassian account email and your Jira site URL (e.g. https://your-site.atlassian.net).

Build

git clone https://github.com/MikeAtPinnacle/jira-worklog-mcp.git
cd jira-worklog-mcp
npm install
npm run build

Compiles to dist/index.js — note its absolute path for the config below.

Configuration

The server reads three env vars (provide them via the MCP client's env block):

Var	Example
JIRA_BASE_URL	https://your-site.atlassian.net
JIRA_EMAIL	[email protected]
JIRA_API_TOKEN	(from the link above)

Auth is HTTP Basic base64(email:api_token) — the server does that for you.

Register with Claude Code

claude mcp add jira-worklog --scope user \
  --env JIRA_BASE_URL=https://your-site.atlassian.net \
  --env [email protected] \
  --env JIRA_API_TOKEN=<your_jira_api_token> \
  -- node /absolute/path/to/jira-worklog-mcp/dist/index.js

Register with Claude Desktop

Edit the Claude Desktop config (%APPDATA%\Claude\claude_desktop_config.json on Windows; ~/Library/Application Support/Claude/... on macOS; ~/.config/Claude/... on Linux):

{
  "mcpServers": {
    "jira-worklog": {
      "command": "node",
      "args": ["/absolute/path/to/jira-worklog-mcp/dist/index.js"],
      "env": {
        "JIRA_BASE_URL": "https://your-site.atlassian.net",
        "JIRA_EMAIL": "[email protected]",
        "JIRA_API_TOKEN": "<your_jira_api_token>"
      }
    }
  }
}

Tool inputs

add_worklog — started defaults to now; Jira records at minute granularity (min 60s).

{ "issue_key": "LEGLINK-142", "time_spent_seconds": 5400, "started": "2026-06-26T13:00:00Z", "comment": "Code review" }

list_worklogs

{ "issue_key": "LEGLINK-142" }

whoami — no arguments.

End-of-day flow (with toggl-mcp)

Claude orchestrates the two servers:

1. toggl-mcp → list_time_entries { start_date, end_date, exclude_tag: "jira-logged" } — each entry has task_name (the Jira key), start, duration; skip running timers.
2. jira-worklog-mcp → add_worklog { issue_key: task_name, time_spent_seconds: duration, started: start, comment: description } per entry.
3. toggl-mcp → tag_time_entry { time_entry_id, tags: ["jira-logged"] } so the entry isn't logged again.

Because step 1 excludes jira-logged, the whole flow is safe to re-run.

Smoke test

export JIRA_BASE_URL="https://your-site.atlassian.net"   # PowerShell: $env:JIRA_BASE_URL="..."
export JIRA_EMAIL="[email protected]"
export JIRA_API_TOKEN="<your_jira_api_token>"
npm run build && npm run smoke

A self-cleaning end-to-end worklog test (writes to a real issue, then deletes it — use a throwaway ticket):

npm run worklogtest -- TEST-123

Notes

• stdio server: logs go to stderr only; stdout is reserved for the MCP protocol.
• Rate limits: 429/5xx are retried with backoff (honoring Retry-After).
• Dedupe is handled on the Toggl side via the jira-logged tag; list_worklogs is available if you also want to check the Jira side.