Skip to content
Agentmart
Submit a tool

Burr

Python framework that models an application as a state machine, with a trace UI and persisted state.

Harness by Apache Software Foundation

IndexedApache-2.0★ 2,584
Write a review

Chalk Labs

Need help deploying Burr?

Chalk Labs sets up agents like this inside real teams: connected to your tools, tested on your data, with a human in the loop where it matters.

Book a call

Install

From the package registry. Read the repository before you give any tool access to your data.

pip install apache-burr

Get the weekly diff

The weekly diff: one email a week with new agent tools, notable updates and grade changes, plus security alerts for tools you follow. Double opt-in, one-click unsubscribe.

We use your email only for this newsletter. Privacy

About

Burr models an application as a state machine built from Python action functions and transitions. Its UI tracks and traces the application in real time, and pluggable persisters save and load state for memory. The project site lists OpenAI and Anthropic among its LLM integrations, and it describes pausing execution for human input at any step. Burr is an Apache Software Foundation incubating project, and the README references release 0.43.0.

Use cases: agent-orchestration, monitoring-observability

No reviews yet. Installed it? Reviews come from verified installers only. How reviews work

Fact sheet

Languages
PythonREADME
Packages
apache-burr (pypi)README
Multi-agent
Yesburr.apache.org
Orchestration
graphREADME
Memory
long-termREADME
Human in the loop
Yesburr.apache.org
Model providers
openai, anthropicburr.apache.org
Maturity
BetaREADME

Facts extracted by Claude Haiku 5.5 from the linked sources on Oct 24, 2026. Wrong fact? Tell us.

Alternatives

Frameworks for the same language with a similar way of orchestrating agents.

Signals

Stars
2,584
Forks
209
Open issues
53
Weekly downloads
4,664
Last commit
Oct 19, 2026 (11 days ago)
Last release
Aug 29, 2026 (2 months ago)
Last package publish
Aug 25, 2026 (2 months ago)

From GitHub (fetched Oct 24, 2026) and the package registry.

Details

Packages
pypi apache-burr
License
Apache-2.0
First seen
Oct 24, 2026
Last checked
Oct 24, 2026

More from Apache Software Foundation

Done for you

Rather not set it up yourself?

Chalk Labs scopes, builds and runs agents for your team: the task audit, the eval harness, the integrations and the weekly ops report. Fixed scope, priced before we start.

See how we build AI agents →Read the case studies

Chalk Labs is a two-founder AI and growth studio. We build AI agents, CRMs and MVPs for Web3 and AI companies, and have shipped 50+ product and token launches.

launches shipped
50+
launches shipped
media placements
500+
media placements
founders on every account
2
founders on every account

Press we've placed: Forbes · CoinDesk · Decrypt · Cointelegraph · The Block

Rahil Jain, Co-founder, Chalk Labs. Ex-Goldman Sachs engineer. You talk to the person who builds it.

Get Burr running in your business

Tell us what you want to automate. A founder replies within one working day with a plan, not a pitch deck.

Goes to the Chalk Labs founders, not the newsletter. Privacy

Need help deploying Burr?

CallGet help
Cite this page

Burr. Agent Mart. https://agentmart.dev/harnesses/burr (last updated 2026-10-24)