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Ax

DSPy-style toolkit for typed LLM signatures, agents and flows, TypeScript-first with Python, Java, C++, Go and Rust libraries.

Harness by Ax

IndexedApache-2.0★ 2,969
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npm install @ax-llm/ax

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About

Ax lets you declare typed LLM signatures as a string DSL, a fluent builder or Standard Schema validators such as Zod, then run them against many model providers by changing a name. It includes agents with runtime execution and delegation, flows built as typed program graphs, and optimizers such as GEPA and few-shot bootstrapping. TypeScript is the source implementation, and generated Python, Java, C++, Go and Rust libraries share the same program model.

Use cases: prompt-engineering, agent-orchestration

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Fact sheet

Languages
TypeScript, Python, Java, C++, Go, RustREADME
Packages
@ax-llm/ax (npm), axllm (pypi), dev.axllm:ax (maven), axllm (cargo), github.com/ax-llm/ax/packages/go (go)README
Multi-agent
YesREADME
Orchestration
graphREADME
Model providers
openai, anthropic, google, meta, deepseek, xai, together, fireworksREADME
Maturity
Stablegithub.com

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.

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Featured in

Signals

Stars
2,969
Forks
199
Open issues
8
Weekly downloads
27,168
Last commit
Oct 21, 2026 (5 days ago)
Last release
Oct 21, 2026 (5 days ago)
Last package publish
Oct 21, 2026 (5 days ago)

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

Details

Packages
npm @ax-llm/axpypi axllmmaven dev.axllm:axcargo axllmgo github.com/ax-llm/ax/packages/go
License
Apache-2.0
Repository
github.com/ax-llm/ax
Website
axllm.dev
First seen
Oct 24, 2026
Last checked
Oct 24, 2026
Source
READMEgithub-graphql
Cite this page

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