fix: send x-opencode-session for OpenCode Go requests - #349
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…t path OpenCode Go rejects requests without a stable per-conversation session id. The header was only built in the legacy kosong requester, which the engine no longer uses, and even there it read a conversationId that turns never set. Derive the header from the session cache key in the live llm-adapter requester and give the connectivity probe a random session id.
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Navigate logical layers of code changes, visualize relationships, and explore their blast radius. 🧰 Additional context used📚 Code guidelines (1)📝 WalkthroughWalkthroughThe change adds OpenCode session-header handling to model requests. It derives headers from conversation IDs or cache keys, preserves configured session headers, and gives catalog ping requests a fresh UUID cache key. ChangesOpenCode session header handling
Priority: ➖ Normal Estimated code review effort: 2 (Simple) | ~10 minutes Change: Bug fix · Severity of issue fixed: Medium Merge Risk: 🔵 Low · up to The live OpenCode request path gains session headers while preserving configured values. The legacy path can still replace a configured session header; this is a bounded issue with a localized fix, suitable for owner awareness or correction before merge. Security Architecture ReviewSecurity architecture risk: 🔵 Low · up to The change sends a conversation identifier to the selected provider while preserving authentication and configured headers. No concrete security regression was identified in the inspected changes, but downstream transport behavior was not fully verified. Retained concerns Security review detailsSecurity Blast Radius
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Full details: Docstring CoverageExplanation Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 2 functions across 5 files. (1 skipped: 1 unsupported.)
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Review comments at
@packages/agent-core-v2/src/kosong/model/modelRequesterImpl.ts:
- Around line 95-98: Update the opencodeSessionHeaders call to pass
this.model.headers so it can preserve an existing X-OpenCode-Session value
instead of generating a replacement.
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.changeset/opencode-go-session-header.mdpackages/agent-core-v2/src/kosong/model/modelRequesterImpl.tspackages/agent-core-v2/src/llm-adapter/model/catalog-service.tspackages/agent-core-v2/src/llm-adapter/model/model-requester-impl.tspackages/agent-core-v2/src/llm-adapter/model/opencode-session.tspackages/agent-core-v2/test/llm-adapter/model/modelRequester.test.ts
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## Requirement or Bug Remove the legacy `packages/agent-core-v2/src/kosong` request layer. Port the features that existed only there and fix the bugs it caused. Stacked on #349. ## Bug Reproduction Steps 1. Configure a provider with `type = "openai"` and `env = { OPENAI_API_KEY = "sk-..." }`, with no `apiKey` and no process env key. 2. Start a session and send a turn. 3. The auth check fails with `AuthTokenMissingError`, even though the request path would find the key. ## Root Cause 20 of the 62 files under `src/kosong` still loaded at runtime through `app/auth/*` and `app/kosongConfig/*`. kosong keeps its own provider-definition map, and at runtime that map held only the pythinker definitions, because the standard definitions never loaded. So `resolveModelAuthMaterial` / `resolveModelForReady` (auth check) and `envOverlay` (vendor `*_BASE_URL`) ignored provider-`env` values for every non-pythinker provider. Real requests use `llm-adapter` and find them. This is a fundamental fix: one provider-definition registry, the live one. ## Code Changes - Delete `src/kosong` (61 files, about 11k lines). The 19 importers now import the same symbols from `#/llm-adapter/*` (types are identical apart from the import path). - Port features that existed only in the deleted copy, each with a test that fails before and passes after: - **OpenCode billing errors:** a 401/402/403 whose body says "insufficient balance", "insufficient credit", "credits exhausted" or "please recharge" is a provider error, not `provider.auth_error`. Ordinary 401s stay auth errors. - **DSML / Hermes tool calls:** tool calls that some models write as text tags on the chat-completions stream are parsed into real tool calls. - **`modelRecordProviderId`** moved to `llm-adapter/model/model.ts`. - `apps/vis` imports `@pymodel/agent-core-v2/llm-adapter/contract/tokens` instead of the `kosong` subpath. - `scripts/check-identity-freeze.mjs` drops the deleted kosong path. - Test fix: an MCP registry test set the wrong home variable, so it did not isolate the home directory. It now sets `PYTHINKER_CODE_HOME`. The default-model fallback that also lived only in kosong is **not** restored: since #323 the gateway tests require that `default_model` is never rewritten. That is a product decision, tracked in #351. ## Behavior Changes and Affected Users | Behavior | Before | After | Who relies on the old behavior | Escape hatch | |---|---|---|---|---| | Vendor API key in a provider's `env` table | Auth check ignores it, turn fails with `AuthTokenMissingError` | Key is found, turn runs | Nobody (the old behavior was a bug) | n/a | | Vendor `*_BASE_URL` in an `env` provider of non-pythinker type | Ignored by `envOverlay` | Applied | Nobody (bug) | Remove the variable from `env` | | OpenCode 401/402/403 with a billing message | `provider.auth_error` ("not logged in") | Provider error with the billing message, not retried | Clients that map `provider.auth_error` to a re-login prompt for this case | None needed; the old message was wrong | | Chat-completions stream with DSML/Hermes tool tags | Tags shown as assistant text, no tool call | Parsed into tool calls. Text that could start a tag is held back until it is known not to be a tag, and `llm.streaming.finish` arrives after the stream ends | Nobody relies on raw tags | None | | `@pymodel/agent-core-v2/kosong/*` subpath import | Resolves | Gone | `apps/vis` (updated in this PR); no other consumer found in the repo | Import from `.../llm-adapter/*` | Affected modules and coverage: - `app/auth`: `test/app/auth/auth.test.ts` (provider-env key case, fails on `main`). - `app/kosongConfig/envOverlay`: new non-pythinker base-url case (fails on `main`). - `human/llm` openai format and stream: billing-error tests and DSML parser/recovery tests. - Full suites: agent-core-v2 6,491 pass, agent-gateway 1,407 pass, vis-server 173 pass; `tsc` and `tsgo` clean; no-comments and identity-freeze checks pass. ## Checklist - [x] I have read the [CONTRIBUTING](https://github.com/PyModel/pythinker-code/blob/main/CONTRIBUTING.md) document. - [x] I have linked a related issue (external PRs: issue must have a maintainer's `/approve`). - [x] I have added tests that prove my feature works. - [x] The behavior-change table above is complete, and every removed behavior or flipped default is named in the changeset and either has an escape hatch or was explicitly approved by a maintainer in this PR. - [x] Ran `gen-changesets` skill, or this PR needs no changeset. - [x] Ran `gen-docs` skill, or this PR needs no doc update.
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This PR was opened by the [Changesets release](https://github.com/changesets/action) GitHub action. When you're ready to do a release, you can merge this and the packages will be published to npm automatically. If you're not ready to do a release yet, that's fine, whenever you add more changesets to main, this PR will be updated. # Releases ## @pymodel/pythinker-code@2.4.1 ### Patch Changes - [#352](#352) [`772e69a`](772e69a) Thanks [@elkaix](https://github.com/elkaix)! - Run tool calls that some models (such as DeepSeek) write as DSML or <tool_call> text instead of showing them as plain text. - [#352](#352) [`772e69a`](772e69a) Thanks [@elkaix](https://github.com/elkaix)! - Report an insufficient-balance response from OpenAI-compatible providers as a billing error instead of an authentication error. - [#349](#349) [`69cc714`](69cc714) Thanks [@elkaix](https://github.com/elkaix)! - Fix OpenCode Go requests failing with "Request is missing x-opencode-session". - [#352](#352) [`772e69a`](772e69a) Thanks [@elkaix](https://github.com/elkaix)! - Accept a vendor API key or base URL set in a provider's env table (for example ANTHROPIC_API_KEY or ANTHROPIC_BASE_URL) instead of ignoring it. ## @pymodel/pythinker-web@0.2.0 ### Minor Changes - [#347](#347) [`bca1910`](bca1910) Thanks [@elkaix](https://github.com/elkaix)! - Align the embedded terminal palette and workflow panel motion with the shared design token system. - [#347](#347) [`bca1910`](bca1910) Thanks [@elkaix](https://github.com/elkaix)! - Show estimated changed-line counts for large edits in session transcripts and file summaries instead of zero. - [#347](#347) [`bca1910`](bca1910) Thanks [@elkaix](https://github.com/elkaix)! - Use the shared type scale and corner radii on application surfaces. ## @pymodel/pythinker-desktop@1.5.1 ### Patch Changes - [#352](#352) [`772e69a`](772e69a) Thanks [@elkaix](https://github.com/elkaix)! - Run tool calls that some models (such as DeepSeek) write as DSML or <tool_call> text instead of showing them as plain text. - [#352](#352) [`772e69a`](772e69a) Thanks [@elkaix](https://github.com/elkaix)! - Report an insufficient-balance response from OpenAI-compatible providers as a billing error instead of an authentication error. - [#349](#349) [`69cc714`](69cc714) Thanks [@elkaix](https://github.com/elkaix)! - Fix OpenCode Go requests failing with "Request is missing x-opencode-session". - [#352](#352) [`772e69a`](772e69a) Thanks [@elkaix](https://github.com/elkaix)! - Accept a vendor API key or base URL set in a provider's env table (for example ANTHROPIC_API_KEY or ANTHROPIC_BASE_URL) instead of ignoring it. Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
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Requirement or Bug
OpenCode Go models fail in the desktop app and the CLI with
400 Request is missing x-opencode-session and cannot be routed efficiently.Bug Reproduction Steps
https://opencode.ai/zen/go/v1) with an API key.Root Cause
OpenCode Go requires a stable session id in the
x-opencode-sessionheader for each conversation (docs). The engine only built this header in the legacykosong/modelrequester. Requests now go through thellm-adapterrequester, which never sent it. Even the legacy path readconversationId, which no turn sets; turns set onlycacheKey(the session id). This is a fundamental fix.Code Changes
llm-adapter/model/model-requester-impl.ts: mergex-opencode-session: <cacheKey>into the model default headers when the base URL is anhttps://opencode.aihost.llm-adapter/model/catalog-service.ts: the connectivity ping sends a random session id, so the settings "test connection" works against OpenCode.opencodeSession.tsintollm-adapter/model/opencode-session.ts; the legacy requester imports it from there and falls back tocacheKey.Behavior Changes and Affected Users
https://*.opencode.aix-opencode-sessionis the session id (a header the user set in provider config wins); the ping probe uses a random idTests:
test/llm-adapter/model/modelRequester.test.tsadds two cases (header sent to OpenCode; not sent to other hosts or without a session id). The first case fails without the fix.Checklist
/approve).gen-changesetsskill, or this PR needs no changeset.gen-docsskill, or this PR needs no doc update.Summary by CodeRabbit