HOT Tasking Manager is an open-source platform built by the Humanitarian OpenStreetMap Team to coordinate large-scale mapping on OpenStreetMap. Teams divide a geographic area of interest into small, assignable tasks — preventing duplicate work, tracking progress in real time, and ensuring quality through structured validation workflows.Documentation Index
Fetch the complete documentation index at: https://mintlify.com/hotosm/tasking-manager/llms.txt
Use this file to discover all available pages before exploring further.
Introduction
Understand what Tasking Manager does and how it powers humanitarian mapping worldwide.
Quickstart
Stand up a local instance and make your first API call in minutes.
Development Setup
Configure the full stack — frontend, backend, and database — for local development.
API Reference
Explore the full REST API: projects, tasks, users, teams, and more.
How It Works
Create a project
A project manager defines an area of interest (AoI) and imports it as a GeoJSON polygon. The backend splits it into a grid of mapping tasks.
Map tasks
Volunteer mappers lock individual tasks and edit the area in iD, Rapid, or JOSM — then mark them ready for review.
Validate contributions
Experienced validators review completed tasks, approve quality work, or return tasks for correction.
Key Features
Projects & Tasks
Learn how areas of interest are divided into lockable task grids.
Mapping Workflow
Understand the full lifecycle from task selection to validation.
Teams & Organisations
Manage contributor groups, set permissions, and create partner pages.
Deployment Guide
Deploy Tasking Manager with Docker or on AWS with CloudFormation.
HOT Tasking Manager is free and open-source (BSD-2-Clause). You are welcome to deploy your own instance. The official production instance is at tasks.hotosm.org.