Changelog

All notable changes to RLMesh are documented here. This changelog tracks the rlmesh Python package on PyPI; the Rust crates are internal implementation detail and carry no separate user stability promise.

The format follows Keep a Changelog. RLMesh is pre-1.0, so a minor (0.x) release may include breaking changes, always called out under a Breaking heading with a migration note. See the versioning policy for details.

0.1.0-rc.1 - 2026-06-17

First release candidate for 0.1.0. RLMesh connects models to environments across process, dependency, and machine boundaries with a Gymnasium-style API.

Added

• Serve Gymnasium-style environments and drive them with reset, step, render, and close over local or remote gRPC transports.

• DLPack-native Tensor transport with zero-copy NumPy, Torch, and JAX backends (#3).

• Run served environments locally or rebuild them identically in an isolated sandbox (SandboxEnv) (#8).

• Evaluate models locally, against a remote server, or inside a sandbox (Model, RemoteModel, SandboxModel) (#11).

• Tag-driven IO adapters that resolve environment tags against model specs at runtime (#9).

• Negotiated workflow editions content-pinned to the 2026.06 edition spec (#2).

• Per-lane NEXT_STEP autoreset contract for vector environments (#7).

Changed

• Hardened the public Python API, space wrappers, and transport for the stable surface (#5).