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…n header) opencode.ai /v1 (OpenAI and Anthropic paths) requires a stable x-opencode-session header per request and a self-reported User-Agent; without it the endpoint returns 400 MissingSessionID. Native paths also require x-api-key even when the key is not sk-ant- prefixed. - add _oc_session_id() stable per-model session id - BaseSession: inject extra_headers when api_base contains opencode.ai, override default UA with GenericAgent/1.0 - _openai_stream()/ClaudeSession.raw_ask(): merge extra_headers - NativeClaudeSession: send x-api-key for opencode.ai api_base
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Summary
Adds first-class support for opencode.ai Zen/Go endpoints to
llmcore.py.opencode's gateway requires every request to carry a stable
x-opencode-sessionheader and a self-reported User-Agent; without them the OpenAI-compatible paths return400 MissingSessionID. Its Anthropic/v1/messagespath also only acceptsx-api-keyauthentication — a non-sk-ant-key currently falls through toAuthorization: Bearerand gets401 Missing API key.Changes
_oc_session_id()+_OC_SIDS— stable per-model session id (reused across requests in-process;configcan override viasession_id/extra_headers).BaseSession.__init__— whenapi_basecontainsopencode.ai, auto-injectextra_headers['x-opencode-session']and replace the default Claude CLI UA withGenericAgent/1.0._openai_stream()— mergeextra_headersso OpenAI / chat_completions / responses paths send the session header.ClaudeSession.raw_ask()— mergeextra_headersfor the Anthropic/v1/messagespath.NativeClaudeSession.raw_ask()— also sendx-api-keywhenapi_basecontainsopencode.ai(covers non-sk-ant-keys).Verification (2026-10-12, local)
kimi-k3,grok-4.7via/v1/responses) — ✅ reachable with this patch; upstream llmcore.py alone fails with400 MissingSessionID.minimax-m3via/v1/messages,api_key_headernon-standard) — ✅ 1.6s first token; upstream alone fails with401 Missing API key.git diff HEAD -- llmcore.py(14 insertions / 1 deletion, 5 hunks), applied on currentmain(6e0c54f).Notes
mykey.pyconfigs need noextra_headers/session_idfields — the patch injects them automatically whenapi_basecontainsopencode.ai.