feat: Context usage tool + New Session tool#21399
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RikishK wants to merge 2 commits intoanomalyco:devfrom
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feat: Context usage tool + New Session tool#21399RikishK wants to merge 2 commits intoanomalyco:devfrom
RikishK wants to merge 2 commits intoanomalyco:devfrom
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Hey, I've been using this stuff with my own local build of opencode. If you are happy for these changes I will clean the PR up and get it ready. |
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Thanks for updating your PR! It now meets our contributing guidelines. 👍 |
fairyhunter13
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Apr 8, 2026
- ContextUsageTool (check_context_usage): reports real-time token/cache usage from the last assistant turn with percentage of context window used - NewSessionTool (new_session): allows agent to abort current session and start a fresh one with an initial message, wired to TuiEvent.SessionNew - Add TuiEvent.SessionNew bus event and app.tsx handler that aborts the old session, creates a new one, and auto-sends the initial message - Update SDK types.gen.ts and sdk.gen.ts with EventTuiSessionNew type - NewSessionTool only registered in TUI clients (app/cli/desktop)
fairyhunter13
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Apr 8, 2026
- ContextUsageTool (check_context_usage): reports real-time token/cache usage from the last assistant turn including percentage of context window - NewSessionTool (new_session): allows agent to abort current session and start a fresh one with an initial message; TUI-only via Flag.OPENCODE_CLIENT - TuiEvent.SessionNew bus event: abort old session, create new, auto-prompt - Update SDK types.gen.ts and sdk.gen.ts with EventTuiSessionNew type - Add packages/opencode/.npmrc pinning registry to registry.npmjs.org
fairyhunter13
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Apr 8, 2026
Core cache optimizations: - Move mindContext from dynamicSystem to stableSystem (500-2000+ tokens/turn cached at BP1 for sessions with SessionMind context) - Split failureContext into stableFailures (prior turns, BP1 cached) and dynamicFailures (current turn only) using signature-based dedup - Add markLargeToolResults() pre-pass: cache_control on tool-result content parts >7000 chars (~2000 tokens), Anthropic direct + OpenRouter Claude - Fix stale parts reference bug in markLargeToolResults for multi-tool messages - Add compressImages() async pre-pass via sharp (PR anomalyco#21371): 3-phase quality->dimension->fallback compression prevents 5MB API limit errors - Session snapshot resets (resetFailureSnapshot/resetEnvDynamicSent) in cleanup - prompt_async idle race condition fix: check new messages before loop break Upstream PR cherry-picks: - PR anomalyco#21535: deterministic queued message wrapping eliminates per-turn cache miss - PR anomalyco#21492: tool evidence digest (evidence.ts) preserves context through compaction - PR anomalyco#21507: session processor single-flight summary dedup improvements - PR anomalyco#21528: prompt_async idle wakeup race condition fix - PR anomalyco#21500: Levenshtein O(min(N,M)) space with Int32Array two-row algorithm New tools (PR anomalyco#21399): - ContextUsageTool (check_context_usage): real-time token/cache usage reporting - NewSessionTool (new_session): TUI-only, abort + create new session - TuiEvent.SessionNew bus event and app.tsx handler - SDK types.gen.ts/sdk.gen.ts EventTuiSessionNew type Test infrastructure: - E2E cache tests (OPENCODE_E2E=1) verified 100% cache hit rate on T2+ - Unit tests for large-tool cache breakpoints (4 scenarios) - Fix pre-existing lsp-deps.test.ts assertion bug (LspTool in make() not all()) - Add await to all ProviderTransform.message() call sites (now async)
fairyhunter13
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Apr 8, 2026
…rchestrator, multi-credential, codebase indexer Core Features: - Session Mind with persistent memory across sessions - Orchestrator + Worker subagent architecture - Multi-credential OAuth with auto-refresh - Codebase indexer and watcher connectors - Footer status bar with live metrics Cache & Prompt Optimizations: - Move mindContext/failureContext to stable system prefix (BP1 cached) - Large tool result cache_control breakpoints (>7000 chars) - Deterministic message wrapping (PR anomalyco#21535) - Tool evidence digest through compaction (PR anomalyco#21492) - O(1) queue dequeue + single-flight summary (PR anomalyco#21507) - Levenshtein O(min(N,M)) space optimization (PR anomalyco#21500) - Three-phase image auto-compression (PR anomalyco#21371) - ContextUsage and NewSession tools (PR anomalyco#21399) - E2E cache integration tests with real Anthropic OAuth Session snapshot resets prevent memory leaks on session delete.
fairyhunter13
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Apr 8, 2026
…rchestrator, multi-credential, codebase indexer Core Features: - Session Mind with persistent memory across sessions - Orchestrator + Worker subagent architecture - Multi-credential OAuth with auto-refresh - Codebase indexer and watcher connectors - Footer status bar with live metrics Cache & Prompt Optimizations: - Move mindContext/failureContext to stable system prefix (BP1 cached) - Large tool result cache_control breakpoints (>7000 chars) - Deterministic message wrapping (PR anomalyco#21535) - Tool evidence digest through compaction (PR anomalyco#21492) - O(1) queue dequeue + single-flight summary (PR anomalyco#21507) - Levenshtein O(min(N,M)) space optimization (PR anomalyco#21500) - Three-phase image auto-compression (PR anomalyco#21371) - ContextUsage and NewSession tools (PR anomalyco#21399) - E2E cache integration tests with real Anthropic OAuth Session snapshot resets prevent memory leaks on session delete.
fairyhunter13
pushed a commit
to fairyhunter13/opencode
that referenced
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Apr 8, 2026
…rchestrator, multi-credential, codebase indexer Core Features: - Session Mind with persistent memory across sessions - Orchestrator + Worker subagent architecture - Multi-credential OAuth with auto-refresh - Codebase indexer and watcher connectors - Footer status bar with live metrics Cache & Prompt Optimizations: - Move mindContext/failureContext to stable system prefix (BP1 cached) - Large tool result cache_control breakpoints (>7000 chars) - Deterministic message wrapping (PR anomalyco#21535) - Tool evidence digest through compaction (PR anomalyco#21492) - O(1) queue dequeue + single-flight summary (PR anomalyco#21507) - Levenshtein O(min(N,M)) space optimization (PR anomalyco#21500) - Three-phase image auto-compression (PR anomalyco#21371) - ContextUsage and NewSession tools (PR anomalyco#21399) - E2E cache integration tests with real Anthropic OAuth Session snapshot resets prevent memory leaks on session delete.
fairyhunter13
added a commit
to fairyhunter13/opencode
that referenced
this pull request
Apr 9, 2026
Core cache optimizations: - Move mindContext from dynamicSystem to stableSystem (500-2000+ tokens/turn cached at BP1 for sessions with SessionMind context) - Split failureContext into stableFailures (prior turns, BP1 cached) and dynamicFailures (current turn only) using signature-based dedup - Add markLargeToolResults() pre-pass: cache_control on tool-result content parts >7000 chars (~2000 tokens), Anthropic direct + OpenRouter Claude - Fix stale parts reference bug in markLargeToolResults for multi-tool messages - Add compressImages() async pre-pass via sharp (PR anomalyco#21371): 3-phase quality->dimension->fallback compression prevents 5MB API limit errors - Session snapshot resets (resetFailureSnapshot/resetEnvDynamicSent) in cleanup - prompt_async idle race condition fix: check new messages before loop break Upstream PR cherry-picks: - PR anomalyco#21535: deterministic queued message wrapping eliminates per-turn cache miss - PR anomalyco#21492: tool evidence digest (evidence.ts) preserves context through compaction - PR anomalyco#21507: session processor single-flight summary dedup improvements - PR anomalyco#21528: prompt_async idle wakeup race condition fix - PR anomalyco#21500: Levenshtein O(min(N,M)) space with Int32Array two-row algorithm New tools (PR anomalyco#21399): - ContextUsageTool (check_context_usage): real-time token/cache usage reporting - NewSessionTool (new_session): TUI-only, abort + create new session - TuiEvent.SessionNew bus event and app.tsx handler - SDK types.gen.ts/sdk.gen.ts EventTuiSessionNew type Test infrastructure: - E2E cache tests (OPENCODE_E2E=1) verified 100% cache hit rate on T2+ - Unit tests for large-tool cache breakpoints (4 scenarios) - Fix pre-existing lsp-deps.test.ts assertion bug (LspTool in make() not all()) - Add await to all ProviderTransform.message() call sites (now async)
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Adds two new tools: check context usage and start new session. This offers hooks for a custom way to roll through sessions and not use the auto compaction tool. I use this via md files and find it much more useful. The context I have from session 1 is still at good quality even at session 50 whereas with auto compaction session 1 context is already at degraded quality at session 3.
Issue for this PR
Closes #10113
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What does this PR do?
Please provide a description of the issue, the changes you made to fix it, and why they work. It is expected that you understand why your changes work and if you do not understand why at least say as much so a maintainer knows how much to value the PR.
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How did you verify your code works?
Local build and have been using it for a while now. Works great for me, automated long running tasks with no context degradation like with auto compaction.
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