Harness Active Open source
Codebuff
Open-source terminal coding agent with modes, custom agents and an SDK.
Get Codebuff Install
npm install -g codebuff Pricing
Strong subscriptions are sold in usage multiples; pay-as-you-go credits cost $0.01 each with no subscription.
- Strong 1x $100/mo All modes with 1x usage
- Strong 2.5x $200/mo All modes with 2.5x usage
- Strong 7x $500/mo All modes with 7x usage
- Pay as you go Pay as you go $0.01 per credit; credits consumed by task complexity
Prices as listed on 19 Oct 2026.
AboutCodebuff
Codebuff is an open-source coding agent for the terminal built on a multi-agent framework. Its Default, Max, Plan and Lite modes select different models and agent compositions, users can define custom agents, and the same framework is available as an SDK and powers the Freebuff products.
Features Verified 8/20 ✓ yes ✗ no ? not verified What do these mean?
Agents
4/5 verified ✓
Multi-provider
Runs agents from several providers side by side?
yes
?
ACP
Speaks the Agent Client Protocol?
not verified
✓
Parallel agents
Runs several agent sessions at the same time?
yes
✓
Subagents
Can an agent delegate work to child agents?
yes
✓
Custom agents
Can you define your own agent roles?
yes
Workflow
1/6 verified ✓
Plan mode
Has an explicit plan / approve-before-edit step?
yes
?
Worktrees
Keeps parallel work in separate git worktrees?
not verified
?
Checkpoints
Can you rewind code and chat to an earlier turn?
not verified
?
Diff review
Includes a built-in diff or review screen?
not verified
?
PR integration
Opens and tracks pull requests from the session?
not verified
?
Automations
Can it start agent runs on a schedule or event?
not verified
Integrations
2/5 verified ✓
MCP
Connects to MCP servers and their tools?
yes
✓
Skills
Can you add reusable skills or commands?
yes
?
Hooks
Can your own scripts run on agent events?
not verified
?
Issue tracker
Can it pull work from GitHub or Linear issues?
not verified
?
Browser preview
Can the agent open and drive a web browser?
not verified
Access & safety
1/4 verified ?
Remote access
Can you follow or control sessions from another device?
not verified
?
Cloud sandbox
Runs work in a hosted sandbox rather than on your machine?
not verified
?
Local sandbox
Does it sandbox what agents can do locally?
not verified
✓
Headless / API
Can you run it from scripts, CI, or your own code?
yes
Other harnessesSee all