Distillation

🔴 (13:23) User showed /home/byk/Code/opencode-lore-v2/packages/core/src/fetch-interceptor.ts, a 587-line fetch-level interceptor that wraps globalThis.fetch and transparently reroutes outgoing LLM API requests through the Lore gateway while preserving original provider URLs, authentication, content type, and all other headers.

🔴 (13:23) FetchInterceptorConfig defines gatewayBase, per-request getHeaders: () => Record<string, string>, and optional onRequestHeaders?: (headers: Headers) => void.

🔴 (13:23) LLM_API_PATH_PATTERNS recognizes /v1/{messages,chat/completions,responses}, /api/v1/{messages,chat/completions,responses}, /api/{messages,chat/completions,responses}, /(openai|anthropic)/v1/{messages,chat/completions,responses}, and /codex/responses, each allowing a trailing path suffix.

🔴 (13:23) The permissive LLM path matching is intentional because overly narrow prefixes caused the Onur “lore-config” bug to recur for providers using non-standard path prefixes.

🔴 (13:23) NON_STANDARD_PATH_REWRITES maps "/codex/responses" to "/v1/codex/responses" for ChatGPT’s non-standard Responses API endpoint.

🔴 (13:23) BodyProtocol supports "anthropic", "openai", and "openai-responses"; PROTOCOL_GATEWAY_PATHS maps them respectively to /v1/messages, /v1/chat/completions, and /v1/responses.

🔴 (13:23) LLM_ENDPOINT_SUFFIXES is ordered longest-first as /chat/completions, /codex/responses, /responses, /messages, allowing non-standard paths such as /foo/v2/chat/completions to be split into the upstream base and original endpoint.

🔴 (13:23) extractBodyString() reads only non-consuming synchronous body forms: strings, ArrayBuffer, and typed-array views decoded with TextDecoder; ReadableStream bodies and bodies available only through a Request are not consumed and fall through.

🔴 (13:23) detectProtocolFromBody() requires a JSON object with model; it detects OpenAI Responses first from input array, max_output_tokens, or previous_response_id, detects Anthropic from top-level system plus messages, and otherwise detects OpenAI Chat from messages.

🔴 (13:23) User stated OpenAI Chat never has a top-level system; it embeds system messages inside the messages array.

🔴 (13:23) Ambiguous body fields such as store and instructions are intentionally excluded from protocol detection because some Chat Completions extensions also use them.

🔴 (13:23) Rewrite carries gatewayUrl, upstreamBase, and the client’s full original upstreamPath; x-lore-upstream-path lets the gateway forward the exact endpoint rather than synthesize /v1/..., including GitHub Copilot’s /chat/completions from issue #1052.

🔴 (13:23) interceptUrl() first extracts from the last /v1/; otherwise it applies NON_STANDARD_PATH_REWRITES. It preserves the upstream query string and returns null when URL shape alone cannot identify a canonical gateway endpoint.

🔴 (13:23) interceptUrlForProtocol() handles body-detected non-standard paths such as /v2/chat/completions and /llm/messages, chooses the gateway endpoint via PROTOCOL_GATEWAY_PATHS, strips a recognized endpoint suffix to derive upstreamBase, falls back to the upstream origin, and preserves the full original pathname as upstreamPath.

🔴 (13:23) warnedPaths stores ${host}${pathname} so an LLM-like but unmatched endpoint logs its bypass warning only once.

🔴 (13:23) User stated unknown request paths always pass through; rewriteRequest() never reads a Request body, known paths can safely carry streaming bodies, and unknown paths are returned unchanged.

🔴 (13:23) User stated the interceptor never intercepts requests already going to the gateway.

🔴 (13:23) User stated the interceptor never intercepts local requests because they may target a local LLM or the gateway itself and could create an infinite loop.

🔴 (13:23) User stated the interceptor never intercepts non-LLM API paths such as arbitrary plugin HTTP calls and health checks.

🔴 (13:23) shouldIntercept() accepts only recognized LLM paths on remote hosts and returns false for malformed URLs, URLs starting with gatewayBase, and hosts localhost, 127.0.0.1, 0.0.0.0, ::1, or [::1].

🔴 (13:23) mayBeLLMRequest() is the fast prefilter and returns true only when the URL contains /messages, /completions, or /responses.

🔴 (13:23) rewriteRequestForProtocol() observes headers on direct gateway requests via onRequestHeaders, bypasses local hosts, rewrites either a recognized path or a body-detected protocol, applies gateway headers, and otherwise returns the original Request.

🔴 (13:23) applyGatewayHeaders() sets x-lore-upstream-url, conditionally sets x-lore-upstream-path only for an absolute path beginning with /, and injects dynamic context headers only when the header is not already present; errors from a dynamic-header callback are logged as fetch-interceptor: getHeaders() failed:.

🔴 (13:23) observeRequestHeaders() treats the observer as best-effort and logs callback failures as fetch-interceptor: onRequestHeaders() failed:.

🔴 (13:23) installFetchInterceptor() uses the process-global key Symbol.for("lore.fetchInterceptor.originalFetch") rather than module-local state, ensuring every bundled or instantiated copy of @loreai/core shares one original-fetch slot.

🔴 (13:23) The process-global original-fetch slot fixes the double-install/infinite-loop shape from issue #1027: with module-scoped state, copy B could capture copy A’s interceptor as its “original,” producing gateway → interceptor → gateway recursion. The shared slot makes it safe to inline core into the Bun gateway bundle configured by script/bundle.ts.

🔴 (13:23) A repeated installFetchInterceptor() call returns a no-op cleanup when the shared slot is already populated; the real cleanup restores the captured original fetch and resets the slot to null.

🔴 (13:23) The installed interceptor parses the gateway URL once, bypasses obviously non-LLM calls without URL parsing, parses candidate URLs once, avoids body parsing for recognized paths, and only attempts body detection when the path looks LLM-like but does not match known patterns.

🔴 (13:23) An unmatched LLM-like request logs fetch-interceptor: ${upstream.host}${upstream.pathname} matched no LLM API pattern — request bypassing Lore gateway. Add a pattern in fetch-interceptor.ts if this is an LLM endpoint. once and passes through unchanged.

🔴 (13:23) Successful rerouting logs either a normal gateway route or body-detected ${detected}; existing Request inputs are forwarded as originalFetch(routed), while other inputs use originalFetch(routed.url, { ...init, headers: routed.headers }).

🔴 (13:23) The interceptor assigns globalThis.fetch = Object.assign(interceptor, originalFetch) to preserve extra fetch properties such as preconnect on newer Node.js versions.

🔴 (13:24) User showed /home/byk/Code/opencode-lore-v2/packages/opencode/src/index.ts, a 503-line OpenCode Lore plugin entry that exports only LorePlugin and a same-reference default export.

🔴 (13:24) Helper functions are imported from ./internal rather than exported from the plugin entry because OpenCode’s legacy loader invokes every function export as a plugin and rejects non-function exports; previously, invoking applyLoreProviderConfig inserted undefined into the hooks array and caused undefined is not an object (evaluating 'A.event').

🔴 (13:24) KNOWN_GATEWAY_PORTS is [3207, 5673]; resolveGatewayUrl() checks LORE_REMOTE_URL, then LORE_GATEWAY_URL, then a port from @loreai/gateway’s readPortFile(), then ports 3207 and 5673.

🔴 (13:24) If LORE_REMOTE_URL is unreachable, the plugin logs the failure and falls through to local discovery rather than stopping.

🔴 (13:24) startInProcess() dynamically imports @loreai/gateway with /* webpackIgnore: true */, calls startGateway({ quiet: true, local: true }), uses the gateway fallback chain 3207 → 5673 → random, returns http://127.0.0.1:${handle.port}, logs when an existing gateway is reused, and stores failures in lastGatewayStartError.

🔴 (13:24) Process-wide initialization uses processInitDone, processLoreActive, processLoreBase, and memoized loreInitPromise so concurrent LorePlugin calls do not race during gateway probe/start.

🔴 (13:24) Per-project state is held in projectState, keyed by ctx.project.id, with { projectPath, gitRemote, lastSeenAt }; this prevents concurrent projects or sub-agents from producing a “last project wins” race.

🔴 (13:24) currentProject stores { path, gitRemote } as one paired object for fetches that bypass chat.headers, preventing a path from being combined with another project’s remote and becoming a “git-remote magnet.”

🔴 (13:24) SESSION_STATE_TTL_MS is exactly 24 * 60 * 60 * 1000 (24 hours); stale project and parent-session entries are opportunistically reaped, and the stated memory estimate is approximately 200 bytes per project, or 20 KB for 100 projects.

🔴 (13:24) sessionParent caches session.id → { parentID, lastSeenAt }; resolveParentSession() calls client.session.get({ path: { id: sessionID } }), caches both non-null parents and successful null primary-session results, but does not cache failures so transient errors are retried.

🔴 (13:24) OpenCode Task sub-agents run in child sessions whose immutable parentID identifies the spawning session; the plugin forwards non-null parents as x-parent-session-id so the gateway recognizes sub-agents and adjusts LTM injection sizing for issue #1300, matching Claude Code’s native signal.

🔴 (13:24) isInertTestEnv() keeps the plugin inert when NODE_ENV=test or an argv entry includes .test., unless LORE_OPENCODE_FORCE_ACTIVE=1; forced-active tests can retain test logging/DB isolation while exercising real discovery, interception, and routing via LORE_GATEWAY_URL.

🔴 (13:24) LorePlugin treats LORE_DISABLED=1 and LORE_DISABLED=true as disabled states.

🔴 (13:24) In a real OpenCode process, log.silenceStderr() sets a process-global silence flag so no core or bundled-gateway output corrupts the full-screen TUI; logs still go to the file and Sentry sink and remain available through lore logs.

🔴 (13:24) On gateway startup failure, the user-visible message begins Lore failed to start — memory features are unavailable. and includes lastGatewayStartError when available; module/export-not-found errors additionally recommend pnpm --filter @loreai/gateway run bundle or run build for a development checkout.

🔴 (13:24) Project registration derives thisProjectPath with discoverWorkspaceRoot(ctx.worktree || ctx.directory) and reuses a cached git remote only when the cached path equals the current path; otherwise it calls getGitRemote(thisProjectPath) ?? "".

🔴 (13:24) The config hook sets cfg.compaction = { auto: false, prune: false } because the gateway handles compaction.

🔴 (13:24) The config hook registers hidden workers in this exact order: 1. lore-distill — description Lore memory distillation worker; 2. lore-curator — description Lore knowledge curator worker; 3. lore-query-expand — description Lore query expansion worker. Each uses mode: "subagent" and hidden: true.

🔴 (13:24) mode: "subagent" is required for hidden: true to work because OpenCode defaults agents to mode: "all" and otherwise exposes them in both the primary Tab picker and the @-mention/skill list.

🔴 (13:24) The config hook delegates provider base-URL pinning to applyLoreProviderConfig(cfg, gatewayBase).

🔴 (13:24) The chat.headers hook injects remote-gateway access headers, stable x-lore-session-id from input.sessionID, x-lore-agent from input.agent, optional x-parent-session-id, x-lore-project, x-lore-git-remote, and runtime provider ID as x-lore-provider.

🔴 (13:24) For local/self-hosted providers, the plugin derives an environment key as LORE_UPSTREAM_${providerID.toUpperCase().replace(/-/g, "_")} and uses its value as x-lore-upstream-url only if that header is not already set.

🔴 (13:24) LORE_UPSTREAM_EXTRA_HEADERS is parsed and forwarded as literal request headers for corporate proxies, LiteLLM, and Cloudflare AI Gateway, subject to shouldForwardUpstreamExtraHeader() so gateway-managed headers are not overwritten.

🔴 (13:24) On first active initialization, installFetchInterceptor() receives gatewayBase and a fallback getHeaders() that includes remote access headers and the paired current project path/git remote; startup logs include active: ${projectPath}, routing through ${gatewayBase}, and dashboard: ${gatewayBase}/ui.

🔴 (13:24) Plugin initialization errors are logged with the full stack or message as init failed: ${detail} before rethrowing because OpenCode’s loader may otherwise catch and hide the root cause.

🔴 (13:24) The plugin entry’s export-shape invariant is guarded by the plugin entry module export shape test in test/index.test.ts: do not add any export beyond LorePlugin and its same-reference default.

🔴 (13:24) User showed /home/byk/Code/opencode-lore-v2/packages/opencode/src/internal.ts, a 208-line helper module deliberately separated from the plugin entry.

🔴 (13:24) isLoopbackUrl() recognizes case-normalized localhost, localhost., ::1, and any hostname matching ^127(?:\.\d{1,3}){3}$, stripping IPv6 brackets before comparison.

🔴 (13:24) gatewayAccessHeadersForRemote() emits { [GATEWAY_AUTH_HEADER]: LORE_GATEWAY_AUTH_TOKEN } only when normalized LORE_REMOTE_URL exactly matches normalized gatewayBase and a token exists.

🔴 (13:24) shouldForwardUpstreamExtraHeader() rejects every header beginning with x-lore- and the credential headers x-api-key, x-goog-api-key, and authorization; provider and Lore credentials are applied by the gateway, never by this hop.

🔴 (13:24) parseUpstreamExtraHeaders() splits on newline, separates each valid line at its first :, trims names and values, ignores lines with no non-empty name, and preserves additional colons inside the value.

🔴 (13:24) probeLoopback() uses node:http or node:https directly with method: "GET" and an abort signal, drains the response with response.resume(), and accepts only HTTP status codes from 200 through 299.

🔴 (13:24) applyLoreProviderConfig() pins every object-valued OpenCode provider’s options.baseURL to ${gatewayBase}/v1, deep-merging existing provider properties and options so custom headers and model overrides survive.

🔴 (13:24) Universal provider pinning is required because OpenCode may derive Anthropic routing from OPENAI_BASE_URL, strip /v1, and send to http://host/messages; the interceptor intentionally skips 127.0.0.1, leaving a bare /messages request that the gateway does not route and returns as 404.

🔴 (13:24) OpenCode’s resolveSDK() always supplies options.baseURL to the @ai-sdk factory, so loadOptionalSetting() does not consult OPENAI_BASE_URL or ANTHROPIC_BASE_URL; other providers including Google, Mistral, Groq, Cohere, xAI, Perplexity, Together AI, Vercel, Alibaba, DeepInfra, gateway, OpenRouter, and Cerebras have no base-URL environment variable, making iteration over cfg.provider the universal mechanism.

🔴 (13:24) applyLoreProviderConfig() forces headerTimeout: false for provider IDs openai and openai-codex because Lore context preparation can exceed OpenCode Codex’s 10-second header deadline; the gateway owns the foreground request deadline.

🔴 (13:24) If no openai provider exists, applyLoreProviderConfig() creates openai: { options: { baseURL: baseUrl, headerTimeout: false } }; if gatewayBase is empty, it returns without modifying config.

🔴 (13:24) probeGateway() defaults to an exact timeout of 1500 ms, probes ${baseURL}/health, uses direct Node HTTP(S) for loopback URLs to avoid interception, uses fetch() for remote URLs, returns false on any failure, and always clears its abort timer.

🔴 (13:24) surfaceGatewayUnavailable() logs the error to the file/Sentry sink and fire-and-forgets client?.tui?.showToast({ body: { title: "Lore", message, variant: "error" } }); both synchronous throws and promise rejections are swallowed so notification failure never crashes a degraded session.

🔴 (13:24) The TUI toast replaced raw process.stderr.write: it is user-visible and TUI-safe because /tui/show-toast is rendered through OpenCode’s own loop rather than writing terminal bytes.