Task Master AI
Open-source task-management layer for AI coding agents. Takes a PRD (or natural-language project description), decomposes it into a structured task list, and dispatches each task to the cheapest model that can handle it via a three-model split (main / research / fallback). Works as a CLI or as an MCP server, so it plugs into Cursor, Cline, Windsurf, VS Code, Roo Code, or Claude Code without changing the host harness.
- Authors: @eyaltoledano, @RalphEcom
- License: MIT + Commons Clause
- Repo: github.com/eyaltoledano/claude-task-master
- Install:
npx task-master-ai init(CLI) or via the host’s MCP marketplace
The three-model split
| Slot | Typical model | Job |
|---|---|---|
| main | Anthropic Sonnet / Opus | task generation, decomposition, execution |
| research | Gemini 2.5 Pro | context-gathering, library lookups, web research |
| fallback | Gemini 2.5 Flash | cheap retries when the main model fails or budget hits |
The thesis: most tokens an AI coding agent burns are not hard reasoning — they’re context-loading, file enumeration, library research, and retry loops. Routing those to a cheap model and reserving the expensive model for the actual reasoning step is where the cost wins come from. Pairs naturally with Open-Source Model Integration’s same thesis from the model-substitution angle.
Why it matters
Task Master is a clean instance of the Agentic Harness Primitives tool pool assembly + token budget tracking + agent type system patterns rolled into a single user-facing tool. It’s also one of the cleanest practical implementations of the planning-first thesis (Cole Medin’s pattern, BMAD, meta-prompting) — the PRD-to-task-list step is exactly the planning artifact those frameworks ask for.
Sources
- 100x Cursor + Cline’s Code Quality, Cost, & Speed With Task Master AI — WorldofAI walkthrough; full-stack task app demo
See Also
- AI Coding Workflow — the planning-first thesis Task Master operationalizes
- BMAD Method — heavier multi-persona variant
- Multi-Agent Orchestration — broader pattern
- MCP — the protocol Task Master uses to plug into hosts
- cursor, cline, claude-code — the harnesses it integrates with