Elixir Core Release Notes

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0.4.0 - 2026-11-02

Source release tag elixir/v0.4.0. The Hex package praxo_core==0.4.0 is published from that tag via interactive 2FA OTP.

Added

  • Human-in-the-loop interrupt decisions through AgentOptions.interrupt_on, on_interrupt_decision, and on_interrupt.
  • Praxo.Interrupt and Praxo.InterruptDecision with approve/edit/reject/ respond actions. Interrupted calls emit tool.interrupt and edited arguments are reauthorized.
  • API snapshot api/0.4.0.txt.

0.3.0 - 2026-11-01

Source version 0.3.0; tag creation is a release step.

Added

  • Cancellation option with model/tool cancellation cleanup.
  • Stream parts and on_stream callbacks; stream errors fail closed.
  • Native Praxo.SSE.parse/1 parser rejecting truncated and half-packet streams.
  • Bounded parallel tool execution through max_parallel_tools.
  • API snapshot api/0.3.0.txt.

Compatibility

  • New AgentOptions fields are additive.
  • The Hex package remains praxo_core@0.1.1 until publication.
  • The Core contract remains SPEC_VERSION 0.2.0.

0.2.0 - 2026-11-01

Source release tag elixir/v0.2.0. The Hex package remains praxo_core@0.1.1 until publication.

Added

  • Policy hooks and middleware hooks for before-run, after-run, and before-tool.
  • Final tool-name allowlist checks and reauthorization of middleware changes.
  • Lifecycle cleanup for startup failures, after-run continuation, and fail-closed cleanup errors.
  • API snapshot api/0.2.0.txt.

Compatibility

  • New AgentOptions fields are additive.
  • Cancellation, streaming, SSE, parallel tools, and run-state isolation remain unsupported.
  • The Core contract remains SPEC_VERSION 0.2.0.