v0.10.0

What's Changed

• Bump version to 0.9.1.dev0 after the 0.9.0 release by @cursor[bot] in #1431
• Bump actions/upload-artifact from 7.0.1 to 7.0.2 by @dependabot[bot] in #1422
• Bump actions/download-artifact from 8.0.1 to 8.0.2 by @dependabot[bot] in #1424
• Bump astral-sh/setup-uv from 10.2.0 to 10.3.0 by @dependabot[bot] in #1421
• Bump huggingface/doc-builder/.github/workflows/build_main_documentation.yml from 9fc8a41d7729c424fdb2192f2f85ff63102ec9a3 to 90ddd199e07144a13408c523680c76987343c95f by @dependabot[bot] in #1423
• Bump huggingface/doc-builder/.github/workflows/upload_pr_documentation.yml from 9fc8a41d7729c424fdb2192f2f85ff63102ec9a3 to 90ddd199e07144a13408c523680c76987343c95f by @dependabot[bot] in #1425
• Link FineEnvs from the README, the Learn index and Community Environments by @sergiopaniego in #1433
• chore(deps): bump pyjwt from 2.14.0 to 2.15.0 in /tests/validation_runtime by @dependabot[bot] in #1335
• chore(deps): bump fsspec from 2026.3.0 to 2026.6.0 in /envs/textarena_env by @dependabot[bot] in #1344
• chore(deps): bump fsspec from 2026.3.0 to 2026.6.0 in /envs/websearch_env by @dependabot[bot] in #1336
• chore(deps): bump gradio from 6.12.0 to 6.16.0 in /envs/reasoning_gym_env by @dependabot[bot] in #1317
• chore(deps): bump datasets from 4.8.5 to 5.0.1 in /envs/openapp_env by @dependabot[bot] in #1316
• helium_browser_env: README, catalog card, Space deploy and playground drawing by @sergiopaniego in #1432
• chore(deps): consolidate envs Dependabot security bumps (2026-10-19) by @cursor[bot] in #1453
• fix(cli): escape [harbor] in harbor help so the install hint shows by @avgvi in #1315
• docs: add SECOND STRIKE to Community Environments by @KyleClouthier in #1448
• Pass workflow expressions through the environment by @hf-security-analysis[bot] in #1241
• feat(validation): enforce and measure public and no-network policies by @rycerzes in #1358
• capture: keep the provider base path when building upstream URLs by @jayzuccarelli in #1434
• Fix Maze reset episode ID propagation by @k21993 in #1338
• Fix BrowserGym reset episode ID propagation by @k21993 in #1337
• fix(cli): give the openenv init template the full reset(seed, episode_id) signature by @avgvi in #1333
• fix(envs): honor reset(seed) in dipg_safety_env, wildfire_env and kernrl by @tiagoperrupato in #1444
• fix(envs): serve each environment's own State subclass on /schema and /state by @k21993 in #1198
• feat(tbench2_env): report execution budgets in the reset observation by @KNambiarDJsc in #1203
• rubrics: run container pre-hooks before evaluating children. by @Shakhtar-Sankur in #1441
• rubrics: await an async child returned by a sync forward() by @Shakhtar-Sankur in #1442
• Preserve independent conversations in evaluation exports by @salma2vec in #1436
• capture: find a turn's parent longest-first instead of comparing every earlier turn by @jayzuccarelli in #1438
• fix space subdomain for repo ids with underscores/caps by @u7k4rs6 in #1279
• harbor_env: forward purpose, provider and eval_sampling from HarborSessionFactory by @jayzuccarelli in #1285
• fix(client): stop provider when async factory is cancelled during connect by @rodrigosetti in #1309
• fix: propagate Terminus E2B cleanup failures by @max-sudolabs in #1381
• fix(cli): clean up validation subjects when stopped with SIGTERM by @rycerzes in #1342
• Show how a TextArena game ended in the final observation by @sergiopaniego in #1455
• fix(envs): pass reset_observation_cls only when the installed core supports it by @rycerzes in #1341
• Release OpenEnv 0.9.1 by @cursor[bot] in #1454

New Contributors

• @avgvi made their first contribution in #1315
• @KyleClouthier made their first contribution in #1448
• @tiagoperrupato made their first contribution in #1444
• @KNambiarDJsc made their first contribution in #1203
• @Shakhtar-Sankur made their first contribution in #1441
• @salma2vec made their first contribution in #1436
• @rodrigosetti made their first contribution in #1309
• @max-sudolabs made their first contribution in #1381

Full Changelog: v0.9.0...v0.10.0

v0.9.0

What's Changed

• chore: bump version to 0.8.1.dev0 (post-release) by @cursor[bot] in #1345
• Move the opencode_env and pi_env removal to OpenEnv 0.9.0 by @sergiopaniego in #1292
• Add tau2_env: τ²-bench customer-service conversations by @sergiopaniego in #1290
• Add a recipe that evaluates Claude Code on τ²-bench (RFC 005) by @sergiopaniego in #1291
• tau2_env: a failed simulated user is an error, and three web UI fixes by @sergiopaniego in #1347
• Docs: organize Harnesses by who owns the loop (white-box, black-box, agent in env) by @sergiopaniego in #1349
• Docs: framework-neutral Training overview and harness pages by @sergiopaniego in #1350
• Docs: production mode and HF sign-in guides, Harbor up front, Spaces metadata (#1296) by @sergiopaniego in #1348
• Docs: reference for harbor/catalog/discover, harness API and HFSandboxProvider, Harbor README (#1296) by @sergiopaniego in #1352
• Docs: Space cards with a working client snippet, CARLA example URL (#1296) by @sergiopaniego in #1351
• Docs: refresh Getting Started, walkthrough, SFT warm-up and 2048 tutorials (#1296) by @sergiopaniego in #1353
• Rewrite the README, docs index and Getting Started around what OpenEnv offers by @sergiopaniego in #1298
• openenv push: don't require models.py (MCP envs like echo_env) by @sergiopaniego in #1356
• Web UI Quick Start: the env's real client class, URL and action fields by @sergiopaniego in #1359
• Instantiate functools.partial env factories in the web interface by @sergiopaniego in #1364
• openenv push: remove stale Space files and skip build artifacts by @sergiopaniego in #1365
• Fix OpenEnv ref pinned by prepare_hf_deployment.sh by @sergiopaniego in #1366
• Fix "Event loop is closed" in openenv collect with a model teacher by @sergiopaniego in #1367
• Fix runtime bugs in dipg_safety, sumo_rl, julia, snake and qed_math envs by @sergiopaniego in #1368
• Web UI: a simpler, more visual default playground by @sergiopaniego in #1363
• Link the TRL example and the multi-harness article from harbor_env by @sergiopaniego in #1293
• Fix the grid_world and calendar clients' step results by @sergiopaniego in #1369
• fix(ci): harden GitHub Actions workflows (#1376) by @hf-security-analysis[bot] in #1380
• Docs: trim the catalog, auto-discovery and Harbor qualification guides, tighten environment READMEs (#1296) by @sergiopaniego in #1370
• Docs: fold guides, align titles, keep training pages framework-neutral by @sergiopaniego in #1371
• Docs: trim the Hello World tutorial and regenerate its notebook by @sergiopaniego in #1372
• Docs: one build-an-environment walkthrough by @sergiopaniego in #1373
• Fix openenv init template: server --port, next steps and image tags by @sergiopaniego in #1374
• Keep GitServerClient git config out of the user's home by @sergiopaniego in #1375
• Default HF deploy workflow to the latest stable release tag by @sergiopaniego in #1376
• Keep user-added and excluded files when pushing to a Space by @sergiopaniego in #1377
• Fix web playground follow-ups (#1363, #1359) by @sergiopaniego in #1378
• Follow-ups to #1368, #1369, #1347 and #1363 by @sergiopaniego in #1379
• fix(finqa_env): honor reset(seed) so the question order is reproducible by @Matheus-F-Scatolin in #1252
• docs: fix typos in comments and env docs by @Matheus-F-Scatolin in #1253
• harbor_env: decode trial_uri so the ATIF check survives escaped paths by @jayzuccarelli in #1312
• Add TitanRL integration example — train Muse Glimmer 30B on envs/chess_env by @AlirezaShamsoshoara in #1260
• Remove opencode_env and pi_env (for 0.9.0) by @sergiopaniego in #1346
• Parse --host/--port inside server main() for envs and import templates by @sergiopaniego in #1388
• Show big arrays as their shape in the web playground by @sergiopaniego in #1398
• Polish the web playground: quick-action hover, long args, required choices, README order by @sergiopaniego in #1401
• Surface CAPACITY_REACHED when the server closes before the client's first send by @sergiopaniego in #1402
• Let clients send headers, e.g. a token for a private Space by @sergiopaniego in #1403
• openenv push: delete remote files only with --delete, as hf upload does by @sergiopaniego in #1413
• Add simplicity, self-contained env and HF ecosystem guidelines for agents by @sergiopaniego in #1414
• Fix a chess memory leak, pelican_svg blocking the event loop, and the one-session cap on 9 envs by @sergiopaniego in #1404
• 🔒 Pin GitHub Actions to commit SHAs by @paulinebm in #1419
• Small follow-ups: dead openenv_core fallbacks, quoted git args, collect loop threads by @sergiopaniego in #1397
• pelican_svg_env: draw the submitted SVG in the web playground by @sergiopaniego in #1395
• [carla_env] Advance simulation time per tool on the server by @sergiopaniego in #1412
• carla: draw the road in the web playground by @sergiopaniego in #1407
• Run every BrowserGym call on one dedicated thread by @sergiopaniego in #1399
• unity: give each env instance its own communication port by @sergiopaniego in #1411
• atari: draw the game frame in the web playground by @sergiopaniego in #1389
• browsergym: draw the page in the web playground by @sergiopaniego in #1390
• chess: draw the board in the web playground by @sergiopaniego in #1391
• maze_env: draw the maze in the web playground by @sergiopaniego in #1394
• connect4: draw the board in the web playground by @sergiopaniego in #1392
• grid_world: draw the grid in the web playground by @sergiopaniego in #1393
• snake: draw the board in the web playground by @sergiopaniego in #1396
• textarena: draw the Wordle board in the web playground by @sergiopaniego in #1405
• wildfire_env: draw the fire grid in the web playground by @sergiopaniego in #1406
• dm_control: draw the physics scene in the web playground by @sergiopaniego in #1409
• openspiel: draw 2048, tic-tac-toe, connect four, blackjack, kuhn poker and cliff walking in the web playground by @sergiopaniego in #1410
• unity: draw the camera image in the web playground by @sergiopaniego in #1408
• Show a web playground screenshot in each env README by @sergiopaniego in #1420
• Hide the Space front matter in the playground README by @sergiopaniego in #1428
• RFC 000: deprecate before removing, in line with INVARIANTS.md by @sergiopaniego in #1295
• docs(rfc-005): reconcile RFC 005 with the merged implementation by @sergiopaniego in #1343
• Update wordle tutorial to native vllm serve by @sergiopaniego in #1082
• Nits to the browser demo by @merveenoyan in #1429
• Release OpenEnv 0.9.0 by @cursor[bot] in #1418

New Contributors

• @Matheus-F-Scatolin made their first contribution in #1252

Full Changelog: v0.8.0...v0.9.0

v0.8.0

What's Changed

• chore: bump version to 0.7.1.dev0 (post-release) by @cursor[bot] in #1287
• Educational agentic browser example by @merveenoyan in #1305
• chore(deps): bump gradio from 6.15.1 to 6.16.0 in /envs/textarena_env by @dependabot[bot] in #1307
• chore(deps): bump gradio from 6.12.0 to 6.16.0 in /envs/websearch_env by @dependabot[bot] in #1306
• chore(deps): bump pypdf from 6.16.1 to 6.19.0 in /envs/repl_env by @dependabot[bot] in #1300
• chore(deps): bump tornado from 6.5.8 to 6.5.9 in /envs/wildfire_env by @dependabot[bot] in #1302
• chore(deps): bump urllib3 from 2.7.0 to 2.8.0 in /envs/wildfire_env by @dependabot[bot] in #1284
• chore(deps): bump pyjwt from 2.13.0 to 2.15.0 in /envs/wildfire_env by @dependabot[bot] in #1283
• chore(deps): bump pyjwt from 2.13.0 to 2.15.0 in /envs/websearch_env by @dependabot[bot] in #1282
• chore(deps): bump tornado from 6.5.8 to 6.5.9 in /envs/coding_env by @dependabot[bot] in #1286
• chore(deps): bump huggingface/doc-builder/.github/workflows/build_main_documentation.yml from ef23fb82532fe347298732dc81dacad2f8eff961 to 9d137cbeab5c75e8093b5c0036f83a429cf878fb by @dependabot[bot] in #1268
• chore(deps): bump huggingface/doc-builder/.github/workflows/build_pr_documentation.yml from ef23fb82532fe347298732dc81dacad2f8eff961 to 9d137cbeab5c75e8093b5c0036f83a429cf878fb by @dependabot[bot] in #1269
• chore(deps): bump huggingface/doc-builder/.github/workflows/upload_pr_documentation.yml from ef23fb82532fe347298732dc81dacad2f8eff961 to 7e31a94f70994bd73656a81690b13aaed439e798 by @dependabot[bot] in #1267
• Align docs snippets and commands with the current API by @sergiopaniego in #1297
• fix(validation): verify container cleanup without matching engine error text by @rycerzes in #1259
• Run Level 2 validation probes by @burtenshaw in #1181
• Add session telemetry by @burtenshaw in #1246
• Validate runtime repeatability by @burtenshaw in #1247
• Validate discovery and rubric attribution by @burtenshaw in #1248
• Clean up validation images by @burtenshaw in #1294
• Revert validation follow-ups for renewed review by @burtenshaw in #1319
• Bump doc-builder workflow pin by @paulinebm in #1334
• Release OpenEnv 0.7.1 by @cursor[bot] in #1318

New Contributors

• @merveenoyan made their first contribution in #1305
• @paulinebm made their first contribution in #1334

Full Changelog: v0.7.0...v0.8.0

v0.7.0

What's Changed

• chore: bump version to 0.6.1.dev0 (post-release) by @cursor[bot] in #1245
• fix: Novita ARG prefix collision and example sandbox leak by @cursor[bot] in #1235
• [RFC 005] 1/4: split openenv.core.harness into a package by @splusq in #1097
• [RFC 005] 2/4: foundation types for agentic harnesses by @splusq in #1098
• docs: add governance by @burtenshaw in #1261
• chore: add a justfile for common dev commands by @splusq in #1096
• [RFC 005] 4/4: production /harness WebSocket route and mode wiring by @splusq in #1100
• Fix two rendering bugs in the Harbor env docs by @sergiopaniego in #1272
• chore(deps): consolidate core Dependabot GitHub Actions bumps by @cursor[bot] in #1271
• opencode_env: don't retry the install when version resolution fails by @jayzuccarelli in #1074
• Fix duplicate venv copy in server Dockerfile template by @ritvik412 in #1034
• fix(harness): bound MCP bridge shutdown and retain live servers by @splusq in #1099
• Document how to deprecate things by @sergiopaniego in #1277
• RFC 006: Agentic RL through Harness Interception — token-faithful traces for TRL by @rycerzes in #941
• Only accept reward.txt written during verification by @surajsharan in #1200
• feat(harbor): rework the serve web UI and make it safe to deploy publicly by @adithya-s-k in #1273
• Deprecate opencode_env and pi_env in favour of harbor_env (removal in 0.8.0) by @sergiopaniego in #1276
• Add producer-owned training captures for harness sessions by @adithya-s-k in #1280
• Release OpenEnv 0.6.1 by @cursor[bot] in #1258

New Contributors

• @splusq made their first contribution in #1097
• @jayzuccarelli made their first contribution in #1074
• @ritvik412 made their first contribution in #1034
• @surajsharan made their first contribution in #1200

Full Changelog: v0.6.0...v0.7.0

v0.6.0

What's Changed

• chore: bump version to 0.5.1.dev0 (post-release) by @cursor[bot] in #1195
• fix: bump soupsieve from 2.8.4 to 2.9 in /envs/openapp_env by @dependabot[bot] in #1196
• Make coding_env's documented constructor arguments actually work by @sergiopaniego in #1147
• feat(providers): add NovitaSandboxProvider for Novita AI sandboxes by @CeerDecy in #1191
• chore(deps): bump anyio from 4.11.0 to 4.14.2 in /envs/snake_env by @dependabot[bot] in #1201
• chore(deps): bump anyio from 4.11.0 to 4.14.2 in /envs/websearch_env by @dependabot[bot] in #1202
• chore(deps): aggregate envs Dependabot updates by @cursor[bot] in #1197
• fix(client): clean up provider when session startup fails by @JianYan11 in #1145
• Define Level 2 contracts by @burtenshaw in #1178
• docs: refresh navigation by @burtenshaw in #1219
• docs: add Miles to Integrations by @nblintao in #1220
• chore(deps): bump actions/upload-artifact from 4.6.2 to 7.0.1 by @dependabot[bot] in #1221
• chore(deps): bump huggingface/doc-builder/.github/workflows/upload_pr_documentation.yml from cf20b09f274383f0d91a7055c5e43f0a2ab3d1a3 to 9f9bb430a712b5650d0e43e510656098ecdd75d4 by @dependabot[bot] in #1223
• chore(deps): bump huggingface/doc-builder/.github/workflows/build_main_documentation.yml from cf20b09f274383f0d91a7055c5e43f0a2ab3d1a3 to 9f9bb430a712b5650d0e43e510656098ecdd75d4 by @dependabot[bot] in #1225
• chore(deps): bump huggingface/doc-builder/.github/workflows/build_pr_documentation.yml from cf20b09f274383f0d91a7055c5e43f0a2ab3d1a3 to 9f9bb430a712b5650d0e43e510656098ecdd75d4 by @dependabot[bot] in #1226
• fix(ci): harden GitHub Actions workflows (#1221) by @hf-security-analysis[bot] in #1228
• Add Docker validation lab by @burtenshaw in #1179
• chore(deps): bump wheel from 0.45.1 to 0.46.2 in /tests/validation_runtime by @dependabot[bot] in #1230
• chore(deps): bump setuptools from 80.9.0 to 83.0.0 in /tests/validation_runtime by @dependabot[bot] in #1231
• chore(deps): bump pip from 25.2 to 26.2 in /tests/validation_runtime by @dependabot[bot] in #1229
• fix: LLM endpoint full base URLs (from #1189) by @cursor[bot] in #1237
• Scope GITHUB_TOKEN permissions per job by @hf-security-analysis[bot] in #1239
• Pin GitHub Actions to commit SHAs by @hf-security-analysis[bot] in #1240
• Release OpenEnv 0.6.0 by @cursor[bot] in #1211

New Contributors

• @CeerDecy made their first contribution in #1191
• @JianYan11 made their first contribution in #1145

Full Changelog: v0.5.0...v0.6.0

v0.5.0

What's Changed

• chore: bump version to 0.4.3.dev0 (post-release) by @cursor[bot] in #1133
• Restore RFC 008 manifest contracts by @burtenshaw in #1110
• Restore RFC 008 validation contracts by @burtenshaw in #1111
• Restore openenv validate skeleton by @burtenshaw in #1112
• RFC 011: ARD-backed catalog discovery for portable environments by @thegovind in #1093
• Adding ThinkingBox to OpenEnv by @TuhinKundu in #1092
• fix: reconnect when the WebSocket was closed by the far end by @sergiopaniego in #1103
• fix(thinkingbox): isolate evaluator failures by @cursor[bot] in #1141
• chore(deps): aggregate openenv-core Dependabot updates by @cursor[bot] in #1130
• chore(deps): apply focused environment security updates by @cursor[bot] in #1136
• fix(cli): align scaffolds and docs with RFC 008 validation by @cursor[bot] in #1137
• fix(client): do not reconnect between WebSocket request and response by @cursor[bot] in #1140
• docs: add Nebius as an OpenEnv supporter by @amrrs in #1128
• chore(deps): bump tornado from 6.5.6 to 6.5.8 in /envs/coding_env by @dependabot[bot] in #1114
• fix(pi): expose pre-baked Node on sandbox PATH by @cursor[bot] in #1142
• fix: textarena nltk compatibility by @dependabot[bot] in #1116
• fix(envs): read reward and done from the step envelope in typed clients by @sergiopaniego in #1017
• feat: versioned metadata-only environment discovery (RFC 011) by @thegovind in #1138
• fix(ci): harden GitHub Actions workflows (#1138) by @hf-security-analysis[bot] in #1161
• fix(client): drop socket on receive timeout (cancel-safe close) by @cursor[bot] in #1162
• Extend check-env-docs for sidebar/catalog gaps (from #1024) by @cursor[bot] in #1165
• docs: Environment Builder client uses .sync() handle (from #1129) by @cursor[bot] in #1166
• fix(envs): declare importable manifest app paths (from #1068) by @cursor[bot] in #1164
• fix(hooks): stop lint.sh from mutating the tree (from #1070) by @cursor[bot] in #1163
• fix(discovery): per-user cache with trusted open/atomic save (from #1011) by @cursor[bot] in #1167
• fix(collect): reject corrupt resume files (from #1154) by @cursor[bot] in #1171
• fix(mcp): production JSON-RPC routing with sync-safe teardown (from #1169) by @cursor[bot] in #1175
• fix: route MCP production mode through JSON-RPC by @mugenkyou in #1169
• tbench2 env server: enable idle-session reaper to reclaim leaked slots by @Shi-Dong in #1000
• Fix Gradio Playground MCP argument parsing by @lakshayxi in #1081
• fix: clear 0.4.3 blockers with cancel-safe teardown by @cursor[bot] in #1172
• revert(tbench2): disable unsafe idle-session reaper by @cursor[bot] in #1185
• Harbor integration: serve Harbor task datasets through OpenEnv as trainable environments by @adithya-s-k in #1036
• chore(deps): aggregate envs Dependabot updates by @cursor[bot] in #1173
• fix(finqa_env): prevent path traversal via agent-supplied company/table names by @OfficialAbhinavSingh in #1008
• fix(core): serve the environment's own State subclass on /schema and /state by @k21993 in #1174
• chore(deps): aggregate envs Dependabot updates by @cursor[bot] in #1192
• fix(harbor): require an admin key on the capture proxy control plane by @burtenshaw in #1193
• fix(validate): respect output flags for runtime validation by @mugenkyou in #1187
• fix(harbor): refuse non-loopback capture CLI without an admin key by @cursor[bot] in #1194
• Release OpenEnv 0.5.0 by @cursor[bot] in #1190

New Contributors

• @TuhinKundu made their first contribution in #1092
• @amrrs made their first contribution in #1128
• @mugenkyou made their first contribution in #1169
• @Shi-Dong made their first contribution in #1000
• @lakshayxi made their first contribution in #1081
• @k21993 made their first contribution in #1174

Full Changelog: v0.4.2...v0.5.0

v0.4.2

What's Changed

• Bump 0.4.2.dev0 by @burtenshaw in #919
• Fix release bump by @burtenshaw in #920
• Make doc builds faster by @mishig25 in #923
• chore(deps): aggregate core dependabot updates by @burtenshaw in #930
• Fix snake environment package import by @burtenshaw in #932
• chore(deps): bump gradio from 6.12.0 to 6.15.1 in /envs/textarena_env by @dependabot[bot] in #968
• chore(deps): bump gradio from 6.12.0 to 6.15.1 in /envs/sumo_rl_env by @dependabot[bot] in #967
• chore(deps): aggregate core dependabot updates by @burtenshaw in #963
• Add Tinker ECHO example by @burtenshaw in #971
• chore(deps): bump actions/setup-python from 6 to 7 by @dependabot[bot] in #995
• Fix local Echo example MCP usage by @burtenshaw in #990
• chore(deps): bump mcp from 1.27.0 to 1.28.1 in /envs/textarena_env by @dependabot[bot] in #994
• fix(tbench2_env): canonical test.sh scoring, real timeouts, task-image workdir by @nblintao in #965
• fix(tbench2_env): keep verifier assets out of the agent's reach by @nblintao in #972
• chore(deps): aggregate envs dependabot updates by @burtenshaw in #921
• Add HFSandboxBackend for the OpenCode harness by @sergiopaniego in #998
• feat(env-client): sync bootstrap constructors + public base_url (#935) by @OfficialAbhinavSingh in #959
• Refactor web interface Gradio block assembly by @burtenshaw in #989
• Refactor init template path resolution by @burtenshaw in #969
• refactor build command assembly by @burtenshaw in #973
• refactor push Dockerfile rewrite helper by @burtenshaw in #964
• Fix local CodingEnv example async client by @burtenshaw in #934
• [codex] refactor runtime server parsers by @burtenshaw in #936
• [codex] refactor collect legal action parsing by @burtenshaw in #931
• [codex] refactor OpenAI chat kwargs by @burtenshaw in #933
• [codex] refactor importer package setup by @burtenshaw in #922
• chore(deps): bump pypdf from 6.13.3 to 6.14.2 in /envs/repl_env by @dependabot[bot] in #1013
• Make ResourceSessionFactory generic over its session type by @sergiopaniego in #1007
• fix(tbench2_env): bring Docker mode up to the canonical scoring contract by @nblintao in #1012
• Fix OpenCodeEnv client timeout and retry transient sandbox-API polls by @sergiopaniego in #1005
• Retry OpenCodeSessionFactory.create() with backoff by @sergiopaniego in #1009
• Remove the nonexistent openenv[core] extra from example and test fixtures by @sergiopaniego in #1020
• Add pelican_svg_env: blind SVG drawing, scored in three layers by @sergiopaniego in #1019
• Add pi_env: Pi coding-agent environment (HF sandbox + transparent-proxy logprobs) by @sergiopaniego in #999
• opencode_env: run setup before the agent, skip verify on non-zero agent exit by @sergiopaniego in #1023
• chore(deps): aggregate core dependabot updates by @burtenshaw in #1069
• docs(tutorials): add black-box coding agent training tutorial (OpenCode + AsyncGRPO) by @sergiopaniego in #1028
• fix(cli): use named Space colors in generated README frontmatter by @sergiopaniego in #1016
• Update TRL example paths after examples/ reorg by @sergiopaniego in #1086
• RFC 008: Environment auto-validation by @zkwentz in #1041
• fix(tbench2_env): a missing reward.txt is a scoring error, not reward 0.0 by @nblintao in #1025
• RFC 008 slice 0a: core types, normalized manifest, and fixtures by @zkwentz in #1044
• RFC 008 slice 0b: registries, report schema, and severity policy by @zkwentz in #1045
• RFC 008 slice 1: walking skeleton for openenv validate by @zkwentz in #1091
• Revert RFC 008 validation stack by @burtenshaw in #1108
• docs: document the Task API by @adithya-s-k in #1094
• Release OpenEnv 0.4.2 by @cursor[bot] in #1125

New Contributors

• @mishig25 made their first contribution in #923
• @nblintao made their first contribution in #965
• @OfficialAbhinavSingh made their first contribution in #959
• @cursor[bot] made their first contribution in #1125

Full Changelog: v0.4.1...v0.4.2

v0.4.1

Core feature highlights

• External environment imports: added openenv import support for ORS/OpenReward and Verifiers environments, including extracted wrapper templates, safer vendoring behavior, task API integration, and an imported-environment example.
• QED Math environment: added a new QED Math env with MCP tools, LLM-judge grading, math verifier service support, reward/rubric metrics, docs, and an inference example.
• Current client/runtime docs: modernized tutorial notebooks and docs around the async EnvClient, WebSocket transport, .sync() wrapper usage, and stale Echo imports.
• Release polish and compatibility: fixed openenv serve exit semantics, refreshed FinQA's minimum OpenEnv version, refactored inspect eval kwargs, and unpinned Hugging Face Hub in HF sandbox examples now that SandboxPool ships in 1.22.0.

What's Changed

• Bump 0.4.1.dev0 by @burtenshaw in #910
• [codex] fix openenv serve exit semantics by @burtenshaw in #907
• [codex] bump finqa env minimum openenv version by @burtenshaw in #909
• [codex] fix stale echo docs imports by @burtenshaw in #908
• [codex] refactor inspect eval kwargs by @burtenshaw in #912
• Unpin huggingface_hub in HF sandbox examples by @sergiopaniego in #913
• Modernize tutorial for async EnvClient API by @vedthebear in #897
• feat: QED Math Environment with MCP tools and LLM-judge rubric by @rycerzes in #865
• [feature] Import external envs (ors, verifiers) by @burtenshaw in #726
• Release 0.4.1 by @burtenshaw in #918

New Contributors

• @vedthebear made their first contribution in #897

Full Changelog: v0.4.0...v0.4.1

v0.4.0

Core feature highlights

• Runtime providers: added Azure Container Apps, Modal, and Hugging Face sandbox providers; provider startup is now owned by the provider interface, with fixes for uv project cloning, context timeouts, and localhost proxy handling.
• Client and MCP runtime: auto-synced generated environment clients, surfaced StepResult metadata in typed clients, and tightened action deserialization plus MCP tool parsing, listing, and HTTP operation helpers.
• Packaging and distribution: simplified install semantics around the openenv package, removed redundant extras from env packages, moved Docker/base-image references to the Hugging Face org, and published the project under BSD 3-Clause.
• New environments and recipes: added ECHO env-token world modeling, Sophistry Bench Sprint, Reasoning Core community environments, and AWM expert-in-the-loop benchmark assets.
• Reliability and examples: fixed BrowserGym reset behavior, JSON imports in the coding env, DIPG/OpenEnv tutorial notebooks, Wordle sync-client usage, OpenSpiel base-image references, and several provider/runtime docs paths.

What's Changed

• chore: bump dev version by @burtenshaw in #738
• chore: update repo and docs URLs after migration to huggingface org by @sergiopaniego in #736
• chore: migrate docs infrastructure to HF doc-builder by @sergiopaniego in #739
• chore: update GitHub org references from meta-pytorch to huggingface by @sergiopaniego in #740
• fix(opencode_env): remove non-existent tests package from setuptools config by @sergiopaniego in #741
• tweak docs by closing some menu sections by @burtenshaw in #750
• Chore/readme cleanup by @sergiopaniego in #754
• chore(deps): roll up core dependabot updates by @burtenshaw in #769
• chore(deps): roll up env dependabot updates by @burtenshaw in #770
• docs: fix rendering issues post HF doc-builder migration by @sergiopaniego in #743
• chore: update Hub example slugs in auto/ docstrings to openenv org by @sergiopaniego in #752
• chore: remove legacy meta-pytorch git install check from _validation.py by @sergiopaniego in #753
• docs: drop release-notes page and update technical committee list by @sergiopaniego in #755
• docs: update technical committee list to include Nvidia, Mercor, and Fleet AI by @sergiopaniego in #777
• fix: use backtick URL in AnthropicClient.endpoint docstring to prevent encoding artifact by @sergiopaniego in #776
• chore: update Docker base image registry from meta-pytorch to huggingface by @sergiopaniego in #751
• chore(deps): roll up core Dependabot updates by @burtenshaw in #788
• fix(auto): use proper URL parsing in _is_local_url by @u7k4rs6 in #742
• chore(deps): bump pypdf from 6.10.2 to 6.12.0 in /envs/repl_env by @dependabot[bot] in #790
• chore(deps): roll up env Dependabot updates by @burtenshaw in #789
• Add Reasoning Core to community environments by @sileod in #781
• chore(deps): consolidate env Dependabot updates by @burtenshaw in #804
• Fix observation metadata serialization and Echo Docker docs port by @burtenshaw in #805
• docs: align partner and committee listings with official blog by @sergiopaniego in #813
• docs: correct StepResult field list in concepts guide by @sergiopaniego in #811
• fix: pin fastapi>=0.116.0 to prevent starlette 0.46+ incompatibility by @sergiopaniego in #810
• fix: surface top-level metadata on StepResult in typed env clients by @sergiopaniego in #812
• chore(deps): bump pypdf from 6.12.0 to 6.13.0 in /envs/repl_env by @dependabot[bot] in #814
• [codex] Group env Dependabot updates by @burtenshaw in #815
• fix(pr-review-bot): only review PRs I was mentioned/review-requested on by @Darktex in #820
• feat: ECHO env-token world modeling (RFC 010 + two runnable examples) by @thegovind in #819
• feat: add Azure Container Apps cloud sandbox provider by @thegovind in #793
• chore(deps): aggregate envs dependabot updates by @burtenshaw in #822
• chore(deps): bump pypdf from 6.13.0 to 6.13.3 in /envs/repl_env by @dependabot[bot] in #825
• chore(deps): aggregate envs dependabot updates by @burtenshaw in #826
• [codex] Add typing_extensions to core deps by @burtenshaw in #828
• Add AWM expert-in-the-loop benchmark recipe and honest eval assets by @thegovind in #833
• Add sophistry_bench_sprint_env: single-agent advocacy reward-hacking environment by @acharyaanusha in #787
• [codex] refactor env client connection helpers by @burtenshaw in #829
• Fix Wordle tutorial imports and sync client usage by @burtenshaw in #836
• [codex] refactor mcp tool parsing by @burtenshaw in #834
• [codex] refactor push auth helpers by @burtenshaw in #835
• [refactor] refactor validation main guard check by @burtenshaw in #827
• docs(echo): link echo-rl, Prime Intellect, and TerminalBench citations by @sergiopaniego in #842
• docs: list all RFCs in README and rfcs index (add RFC 000 and 010) by @sergiopaniego in #843
• [codex] refactor build context detection by @burtenshaw in #850
• [codex] refactor get endpoint registration by @burtenshaw in #851
• chore(deps): aggregate envs dependabot updates by @burtenshaw in #848
• chore(deps): aggregate core dependabot updates by @burtenshaw in #849
• fix(uv-provider): honor context_timeout_s and stop busy-spinning the health poll by @RubenHaisma in #845
• docs(echo): add TRL backend note for ECHO by @sergiopaniego in #844
• chore: update deploy-hf-env.yml by @hf-security-analysis[bot] in #852
• fix(env-client): disable localhost proxy per-connection instead of racing on NO_PROXY by @RubenHaisma in #846
• [codex] fix opencode example mcp path by @burtenshaw in #857
• [codex] refactor action deserialization routing by @burtenshaw in #855
• [codex] refactor skills agent target selection by @burtenshaw in #856
• add runnable TRL backend demo for ECHO by @sergiopaniego in #858
• docs: remove stale PyTorch logo from OpenEnv headers by @sergiopaniego in #859
• fix(examples): await Atari async client by @burtenshaw in #863
• docs: add RadixArk to committee, SGLang and Miles to supporters by @unseenmars in #872
• infra: point openspiel base image to ghcr.io/huggingface/openenv-openspiel-base by @sergiopaniego in #871
• Fix OpenEnv tutorial notebook JSON by @burtenshaw in #866
• docs: document optional dependency extras (inspect, all) by @sergiopaniego in #869
• Add ModalProvider(ContainerProvider) by @joyliu-q in #821
• fix: address modal provider review feedback by @burtenshaw in #878
• [codex] refactor MCP list tools helpers by @burtenshaw in #873
• fix(uv-provider): clone git+ project paths before uv run --project by @acharyaanusha in #854
• Fix BrowserGym server reset by @burtenshaw in #840
• docs: complete and reconcile runtime-provider documentation by @sergiopaniego in #868
• ci: use ubuntu-latest for openspiel base build (8-core-ubuntu runner unknown) by @sergiopaniego in #881
• chore(deps): aggregate envs dependabot updates by @burtenshaw in #884
• Fix DIPG RL notebook JSON by @burten...

v0.3.1

What's Changed

• envs/opencode_env: OpenCode coding-agent harness environment by @adithya-s-k in #656
• Validate env Hub deployment by @burtenshaw in #655
• chore(deps): bump idna from 3.14 to 3.15 in /envs/finqa_env by @dependabot[bot] in #721
• chore(deps): bump idna from 3.11 to 3.15 in /envs/textarena_env by @dependabot[bot] in #697
• chore(deps): roll up env Dependabot updates by @burtenshaw in #723
• chore(deps): roll up core Dependabot updates by @burtenshaw in #724
• [codex] remove meta cla check by @burtenshaw in #728
• [pypi] publish openenv package by @burtenshaw in #732
• fix(repl_env): handle nested parens in FINAL(...) extraction by @kashif in #653
• chore(deps): bump idna from 3.14 to 3.15 in /envs/julia_env by @dependabot[bot] in #725
• Add missing tutorials to web index by @sergiopaniego in #679
• fix: stop logging access tokens in user_manager error path by @kar137 in #722
• fix(textarena): use relative import in rewards.py by @miniMaddy in #470
• Improve PyPI release automation by @burtenshaw in #735
• [codex] governance docs by @burtenshaw in #734
• fix: update pyproject.toml path in base Dockerfile by @targeted-DK in #327
• chore: release 0.3.1 by @burtenshaw in #737

New Contributors

• @kar137 made their first contribution in #722
• @miniMaddy made their first contribution in #470
• @targeted-DK made their first contribution in #327

Full Changelog: v0.3.0...v0.3.1