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Julep 3

Julep 3

Apache-licensed Python framework for typed, durable agent flows with retries and explicit capabilities

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What this product helps you do

Julep 3 is a ground-up rewrite of the earlier Julep agents API. It treats agents as composable dataflows: developers define typed @flow functions, register tools and reasoners, freeze the allowed capability surface at deployment, and inspect the resulting graph and trace. The base Python package can compile and dry-run flows without an API key; optional extras add Temporal or DBOS durability, HTTP and MCP calls, provider adapters, OpenTelemetry, artifact storage, WebAssembly execution, and a self-hosted control plane. Julep 3 is currently a release candidate installed with the pre-release flag, and the project states that there is no migration path from Julep v1.

Problems it solves

  • Ad-hoc agent loops are difficult to resume, retry safely, inspect, and reason about after failures
  • Agent applications need typed tool, reasoner, branching, fan-out, timeout, and retry semantics in one graph
  • Production teams need the permitted tool and model surface frozen and validated before execution
  • Developers need local deterministic dry runs plus optional durable runtimes and control-plane deployment
Best for
Python teams designing durable, typed agent and workflow applicationsDevelopers who want graph compilation and validation before tools or models runTeams evaluating Temporal or DBOS execution with optional self-hosted control-plane componentsEarly adopters comfortable using a Julep 3 release candidate and adapting to pre-1.0 changes

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Julep 3 is an Apache-licensed Python framework that compiles typed agent flows into frozen execution graphs with tools, reasoners, pure functions, branches, fan-out, retries, timeouts, and explicit capability checks.

The base package supports local compilation and dry runs. Optional extras add durable runtimes, providers, MCP and HTTP calls, tracing, a control plane, and deployment tooling. Julep 3 is currently a release candidate and is not compatible with Julep v1.

Information

DeveloperJulep AI Inc.
Languagesen
Pricing modelfree
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