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backlog

backlog

GitHub stars License: MIT CI Docs

Persistent, cross-session task management for Claude Code. Tasks survive sessions so work started by one agent can be picked up by another.

Built on @backloghq/agentdb — typed schemas, auto-increment IDs, virtual filters, blob storage. Pure TypeScript, zero native dependencies.

Install

/plugin marketplace add backloghq/backlog
/plugin install backlog@backloghq-backlog

From source

git clone https://github.com/backloghq/backlog.git
cd backlog && npm install && npm run build
claude --plugin-dir /path/to/backlog

Standalone MCP server

Add to your project's .claude/settings.json:

{
  "mcpServers": {
    "backlog": {
      "command": "node",
      "args": ["/path/to/agent-teams-task-mcp/dist/index.js"],
      "env": {
        "TASKDATA": "/path/to/task-data"
      }
    }
  }
}

Skills

Skill

Description

/backlog:tasks

Show the current backlog — pending, active, blocked, overdue tasks

/backlog:plan

Break down a goal into tasks with dependencies, priorities, and specs

/backlog:standup

Daily standup — done, in progress, blocked, up next

/backlog:refine

Groom the backlog — fix vague tasks, missing priorities, broken deps, stale items

/backlog:spec

Write a spec document for a task before implementation

/backlog:implement

Pick up a task, read its spec, implement it, mark done

/backlog:handoff

Prepare for next session — annotate progress, stop active tasks, summarize state

Agent

The task-planner agent can be auto-invoked by Claude when someone needs to plan work. It reads the codebase, decomposes goals into tasks with dependencies, and writes specs for complex items.

Hooks

Event

What it does

SessionStart

Shows pending task count when a session begins

TaskCreated

Syncs Claude's built-in tasks to the persistent backlog

TaskCompleted

Marks the matching backlog task as done when Claude completes a built-in task

SubagentStart

Auto-assigns unassigned pending tasks to the spawned agent

Tools (MCP)

24 tools for full task lifecycle management:

Tool

Description

task_list

Query tasks with filter syntax. Returns JSON array with all fields.

task_count

Count tasks matching a filter. Same syntax as task_list.

task_add

Create a new pending task. Only description required; all other fields optional.

task_log

Record already-completed work directly in completed status.

task_modify

Partial-update one or more tasks matching a filter. Only provided fields change.

task_duplicate

Copy an existing task with optional field overrides.

task_done

Mark a task as completed with end timestamp.

task_delete

Soft-delete a task. Restorable with task_undo. Use task_purge to permanently remove.

task_annotate

Add a timestamped note. Use task_doc_write for longer content.

task_denotate

Remove an annotation by exact text match.

task_start

Mark a task as actively being worked on. Visible in +ACTIVE queries.

task_stop

Stop working on a task. Returns it to pending status.

task_undo

Undo the most recent operation. Can be called repeatedly.

task_info

Get full JSON details for a single task by ID or UUID.

task_import

Bulk-create tasks from a JSON array. Atomic batch operation.

task_purge

Permanently remove a deleted task. Irreversible.

task_doc_write

Attach/replace a markdown document on a task (specs, notes, context).

task_doc_read

Read the markdown document attached to a task.

task_doc_delete

Remove a task's document. Permanent.

task_archive

Move old completed/deleted tasks to quarterly archive segments.

task_archive_list

List available archive segments.

task_archive_load

Load archived tasks for read-only inspection.

task_projects

List project names with pending/recurring tasks.

task_tags

List tags with pending/recurring tasks.

Filter Syntax

status:pending                    # all pending tasks
project:backend +bug              # bugs in backend project
priority:H due.before:friday      # high priority due before friday
+OVERDUE                          # overdue tasks
+ACTIVE                           # tasks currently being worked on
+BLOCKED                          # tasks blocked by dependencies
+READY                            # actionable tasks (past scheduled date)
agent:explorer                    # tasks assigned to the explorer agent
( project:web or project:api )    # boolean with parentheses
description.contains:auth         # substring match

Supports attribute modifiers (.before, .after, .by, .has, .not, .none, .any, .startswith, .endswith), tags (+tag, -tag), virtual tags (+OVERDUE, +ACTIVE, +BLOCKED, +READY, +TAGGED, +ANNOTATED, etc.), and boolean operators (and, or).

Task Docs

Attach markdown documents (specs, context, handoff notes) to any task:

task_doc_write  id:"1"  content:"# Spec\n\nBuild the auth flow.\n"
task_doc_read   id:"1"
task_doc_delete id:"1"

Writing a doc adds a +doc tag and has_doc:yes, so agents can discover tasks with docs:

task_list filter:"+doc"
task_list filter:"has_doc:yes"

Agent Identity

Tasks support an agent field for tracking which agent owns a task:

task_add  description:"Investigate bug"  agent:"explorer"
task_list filter:"agent:explorer status:pending"

Project Isolation

Each project gets its own task data automatically. When used as a plugin, task data lives in ~/.claude/plugins/data/backlog/projects/<project-slug>/. When used standalone, set TASKDATA explicitly.

Variable

Description

TASKDATA

Explicit path to task data directory (overrides auto-derivation)

TASKDATA_ROOT

Root directory for auto-derived per-project task data

BACKLOG_BACKEND

Storage backend: omit for filesystem (default), s3 for Amazon S3

BACKLOG_S3_BUCKET

S3 bucket name (required when BACKLOG_BACKEND=s3)

BACKLOG_S3_REGION

AWS region (optional if using default credentials)

S3 Backend

Store task data in S3 for team sharing or cloud persistence. Requires @backloghq/opslog-s3:

npm install @backloghq/opslog-s3

Configure via environment variables in .claude/settings.json:

{
  "mcpServers": {
    "backlog": {
      "command": "node",
      "args": ["/path/to/backlog/dist/index.js"],
      "env": {
        "TASKDATA": "my-project/tasks",
        "BACKLOG_BACKEND": "s3",
        "BACKLOG_S3_BUCKET": "my-team-backlog",
        "BACKLOG_S3_REGION": "us-east-1"
      }
    }
  }
}

When using S3, TASKDATA becomes the key prefix in the bucket instead of a filesystem path.

Docker

docker build -t backlog .
echo '{"jsonrpc":"2.0","id":1,"method":"initialize","params":{"protocolVersion":"2024-11-05","capabilities":{},"clientInfo":{"name":"test","version":"1.0"}}}' \
  | docker run --rm -i backlog

Development

npm install
npm run build          # compile TypeScript
npm run lint           # run ESLint
npm test               # run tests (189 tests)
npm run test:coverage  # run tests with coverage
npm run dev            # watch mode

Community

If backlog is useful to you, consider giving it a star — it helps others find the project.

License

MIT

Install Server
A
security – no known vulnerabilities
A
license - permissive license
A
quality - A tier

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