diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 93c7bc7..ee27191 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -2,5 +2,5 @@
   "packages/sandbox": "0.4.51",
   "packages/agent": "0.12.26",
   "packages/provider": "0.4.48",
-  "packages/effect": "0.0.0"
+  "packages/effect": "0.1.0"
 }
diff --git a/packages/effect/CHANGELOG.md b/packages/effect/CHANGELOG.md
new file mode 100644
index 0000000..ac67317
--- /dev/null
+++ b/packages/effect/CHANGELOG.md
@@ -0,0 +1,35 @@
+# Changelog
+
+## 0.1.0 (2026-10-28)
+
+Initial 0.1.0 release of @coder/ai-sdk-effect, an Effect-based bridge that exposes a LanguageModel over CoderAgent with per-call generation options and structured error classification. The package has been migrated to Effect 4 and is now published publicly.
+
+### Highlights
+
+- Published the @coder/ai-sdk-effect package. ([#324](https://github.com/coder/ai-sdk/pull/324))
+- Added a LanguageModel implementation over CoderAgent. ([#241](https://github.com/coder/ai-sdk/pull/241))
+- Migrated the Effect bridge to Effect 4. ([#320](https://github.com/coder/ai-sdk/pull/320))
+- Added per-call generation options, including agent model and reasoning effort. ([#242](https://github.com/coder/ai-sdk/pull/242))
+- Improved error classification, mapping InvalidResponseError to malformed-response and HTTP 402 to a quota error that carries raw usage. ([#328](https://github.com/coder/ai-sdk/pull/328))
+
+### Features
+
+* **effect:** add a LanguageModel over CoderAgent ([#241](https://github.com/coder/ai-sdk/issues/241)) ([277c0ce](https://github.com/coder/ai-sdk/commit/277c0ce484c4cf499cb2b45bf5993ebcc6663f06))
+* **effect:** add Effect bridge spike package ([#145](https://github.com/coder/ai-sdk/issues/145)) ([1dce33f](https://github.com/coder/ai-sdk/commit/1dce33f5aecb44d46e71a0a690cc9323ee02dd11))
+* **effect:** add per-call agent model and reasoning effort options ([#242](https://github.com/coder/ai-sdk/issues/242)) ([286e947](https://github.com/coder/ai-sdk/commit/286e947fbd34969866d19061837056729fa4c4ba))
+* **effect:** classify 402 as quota and carry raw usage ([#328](https://github.com/coder/ai-sdk/issues/328)) ([6fb4c63](https://github.com/coder/ai-sdk/commit/6fb4c6310571317b8aad95b0cafd2546a43d1acd))
+* **effect:** classify agent errors and add per-call generation options ([#240](https://github.com/coder/ai-sdk/issues/240)) ([fd2eabe](https://github.com/coder/ai-sdk/commit/fd2eabeb81168f5a776dc47400d89b1417f2b023))
+* **effect:** forward toolChoice unconditionally and add a live tool-call case ([#319](https://github.com/coder/ai-sdk/issues/319)) ([ef6a0c0](https://github.com/coder/ai-sdk/commit/ef6a0c05624cfbb9d02ddbf5294cc0a09a0e1448))
+* **effect:** migrate bridge to effect 4 ([#320](https://github.com/coder/ai-sdk/issues/320)) ([661c4c2](https://github.com/coder/ai-sdk/commit/661c4c250172c3f1f2a22a45d9e53101395680a2))
+* **effect:** publish @coder/ai-sdk-effect ([#324](https://github.com/coder/ai-sdk/issues/324)) ([3e44f02](https://github.com/coder/ai-sdk/commit/3e44f028bfe7f92e6fdcdd5929516ebf28163965))
+
+
+### Bug Fixes
+
+* **effect:** classify InvalidResponseError as malformed-response ([#381](https://github.com/coder/ai-sdk/issues/381)) ([3098d5b](https://github.com/coder/ai-sdk/commit/3098d5b36b2e06f7a51ac9e57232adb228ef135c))
+
+
+### Documentation
+
+* **effect:** drop leftover spike wording from source comments ([#331](https://github.com/coder/ai-sdk/issues/331)) ([056fe9b](https://github.com/coder/ai-sdk/commit/056fe9bdb7b644b081a203a95c1037a473d8e737))
+* rewrite READMEs for readability and split long guides into docs/ ([#234](https://github.com/coder/ai-sdk/issues/234)) ([1c5079b](https://github.com/coder/ai-sdk/commit/1c5079b103c1719ea49dc1dc07ecc2ad527b163d))
diff --git a/packages/effect/package.json b/packages/effect/package.json
index 14fea87..3153604 100644
--- a/packages/effect/package.json
+++ b/packages/effect/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@coder/ai-sdk-effect",
-  "version": "0.0.0",
+  "version": "0.1.0",
   "description": "Effect bridge for Coder's Vercel AI SDK packages: effect/ai LanguageModel services over Coder AI Gateway and Coder Agents, typed AiError classification, Effect Schema to AI SDK schemas, and scoped Coder workspace Layers.",
   "keywords": [
     "ai",