[dustinhealy]

Summary

Stored foreground Responses could not be continued or retrieved by their returned response IDs, and saving discarded tool results and message ancestry. Completion also omitted accounting and reported store: false even after successful writes. Connect the foreground controller to a typed history, persistence and terminal lifecycle so JSON, SSE and retrieved responses carry the saved turn and its accounting.

How it works

The foreground controller resolves an owned previous reply or conversation, preserves message ancestry and completed tool results, and records usage/accounting with the saved turn. JSON, SSE and retrieved Responses agree on the persisted result. Optional save failures preserve the generated answer with store: false; history lookup failures do not silently start a new conversation.

Type of change

• Feature
• Bug fix

Testing

Tested environments/configuration: Local macOS with CI Node.js 24.22.1, MongoDB replica-set fixtures and the actual execution host, SDK history formatter and Responses event handlers.

Automated tests:

• 248 Responses and execution lifecycle tests pass, including real MongoDB persistence, owner/tenant isolation, item identity, role-preserving history actual SDK tool replay and a real MongoDB account-erasure race.
• 199 controller, callback, routing and capability regression tests pass. Foreground composition uses the real execution host, Responses handlers, billing contextualizer and SDK artifact handler with production cleanup enabled for JSON/SSE success, each data writer under cleanup ownership, resolved save failures, cancellation and outcome-readback outages.
• API typechecking, explicit import sorting/checks on all 21 changed source/test files and scoped static checks pass. Static checks retain four configured skips; the owning typecheck runs separately.
• Ordered dependency/frontend builds and Lighthouse with injected database latency pass. The final API rebuild and suites use the committed typed completion service.

Screenshots / recordings

No standalone UI change.

Risk / compatibility

Terminal publication waits for provider drain, trailing writes and requested storage. Legacy conversation-ID continuations remain supported. Caller-executed tools retain their explicit replay contract. Optional accounting never fabricates a complete amount from partial coverage, and historical calls retain their recorded quotes rather than being repriced.

Checklist

• I reviewed my own changes
• Relevant tests have been added or updated
• Existing relevant tests pass
• The change does not introduce new warnings or errors
• User-facing or complex behavior is documented where necessary
• Required external dependency changes: N/A
• Required documentation PR: N/A

[Copilot]

🟡 Changes recommended

Missing production integration leaves retrieval, continuation, tool results, and cumulative accounting incomplete, while accounting merges can incorrectly report partially covered costs as complete.

6 open issues

• Preserve partial coverage across multi-segment composition · New
• Connect response reference resolution and continuation paths · New
• Integrate cumulative usage across resumed executions · New
• Forward tool completion events to streaming and JSON handlers · New
• Preserve model provenance before contextualizing usage · New
• Wire accounting snapshots into responses and storage · New

What changed in this PR

Adds Responses API helpers intended to preserve stored output history and cumulative usage across continuations, while distinguishing complete accounting from unavailable data.

Changes:

• Adds accounting collection, billing quotes, and segment-composition helpers.
• Adds response-reference resolution, history selection, and message-projection utilities.
• Extends terminal response builders and tool-completion handlers, with focused regression tests.

File	Description
packages/​api/​src/​agents/​responses/​service.ts	Adds completion handling, accounting parameters, and background-request validation.
packages/​api/​src/​agents/​responses/​segments.ts	Adds saved-prefix composition and cumulative usage merging.
packages/​api/​src/​agents/​responses/​segments.spec.ts	Tests segment history, identity, usage, and accounting preservation.
packages/​api/​src/​agents/​responses/​persistence.ts	Adds response resolution, ancestry selection, and stored-message projection.
packages/​api/​src/​agents/​responses/​persistence.spec.ts	Tests persistence references, history branches, and tool-result projection.
packages/​api/​src/​agents/​responses/​index.ts	Exports persistence and accounting helpers.
packages/​api/​src/​agents/​responses/​handlers.ts	Adds terminal accounting metadata and stored-response flags.
packages/​api/​src/​agents/​responses/​clientTools.ts	Updates comments describing stored tool-history behavior.
packages/​api/​src/​agents/​responses/​accounting.ts	Adds usage provenance, billing quotes, and coverage tracking.
packages/​api/​src/​agents/​responses/​accounting.spec.ts	Tests pricing, provenance, deduplication, and unavailable accounting.
packages/​api/​src/​agents/​responses/​__tests__/​service.test.ts	Tests consistent terminal accounting metadata in JSON and SSE.

_{Review effort: Balanced}

[github-actions]

Lighthouse CI failed. The last 80 log lines contain the measured budgets and assertion failures.

│ 23      │ 'http://localhost:3080/api/permissions/mcpServer/effective/all'                                                 │ 3276.3589999999967 │ 4045.475000000006  │ 200    │
│ 24      │ 'http://localhost:3080/api/prompts/groups?limit=10'                                                             │ 3276.6940000000177 │ 4556.694000000018  │ 200    │
│ 25      │ 'http://localhost:3080/api/keys?name=openAI'                                                                    │ 3276.8830000000016 │ 3796.1149999999907 │ 200    │
│ 26      │ 'http://localhost:3080/api/presets'                                                                             │ 3277.845000000001  │ 3796.460000000021  │ 200    │
│ 27      │ 'http://localhost:3080/api/tags'                                                                                │ 3280.5230000000156 │ 3879.44200000001   │ 200    │
│ 28      │ 'http://localhost:3080/api/share/link/16390000-0000-4000-8000-000000000001'                                     │ 3282.103000000003  │ 4306.168000000005  │ 200    │
│ 29      │ 'http://localhost:3080/api/messages/16390000-0000-4000-8000-000000000001?toolPreviews=1'                        │ 3283.67300000001   │ 4388.986000000004  │ 200    │
│ 30      │ 'http://localhost:3080/api/files/config'                                                                        │ 3283.842000000004  │ 4053.8000000000175 │ 200    │
│ 31      │ 'http://localhost:3080/api/user/settings/favorites/tools'                                                       │ 3284.0350000000035 │ 4557.418999999994  │ 200    │
│ 32      │ 'http://localhost:3080/api/endpoints/token-config'                                                              │ 3284.213000000018  │ 4315.981           │ 200    │
│ 33      │ 'http://localhost:3080/api/user/settings/skills/active'                                                         │ 3284.363000000012  │ 4823.143000000011  │ 200    │
│ 34      │ 'http://localhost:3080/api/agents/tools/web_search/auth'                                                        │ 3284.5350000000035 │ 7345.192999999999  │ 200    │
│ 35      │ 'http://localhost:3080/api/agents/tools/calls?conversationId=16390000-0000-4000-8000-000000000001'              │ 3286.1449999999895 │ 4897.638000000006  │ 200    │
│ 36      │ 'http://localhost:3080/api/agents/chat/status/16390000-0000-4000-8000-000000000001?generationProtocolVersion=2' │ 4510.3490000000165 │ 4814.174999999988  │ 200    │
└─────────┴─────────────────────────────────────────────────────────────────────────────────────────────────────────────────┴────────────────────┴────────────────────┴────────┘

Inspect .lighthouse HTML/JSON and e2e/lighthouse/README.md. Reuse loaded user/config data; overlap independent reads without bypassing authorization.

┌─────────┬────────────────────────────┬─────────────────────┬───────┐
│ (index) │ audit                      │ median              │ limit │
├─────────┼────────────────────────────┼─────────────────────┼───────┤
│ 0       │ 'largest-contentful-paint' │ 4525.377            │ 4500  │
│ 1       │ 'cumulative-layout-shift'  │ 0.01790116740361323 │ 0.1   │
│ 2       │ 'total-blocking-time'      │ 409.63599999999997  │ 500   │
└─────────┴────────────────────────────┴─────────────────────┴───────┘

  1) [chromium] › e2e/lighthouse/load.spec.ts:10:5 › serial database latency stays within web-vitals budgets 

    Error: Median largest-contentful-paint must stay within 4500

    expect(received).toBeLessThanOrEqual(expected)

    Expected: <= 4500
    Received:    4525.377

       at audit.ts:127

      125 |   console.table(measured);
      126 |   for (const { audit, median, limit } of measured) {
    > 127 |     expect(median, `Median ${audit} must stay within ${limit}`).toBeLessThanOrEqual(limit);
          |                                                                 ^
      128 |   }
      129 |   return results;
      130 | }
        at auditPage (/home/runner/work/LibreChat/LibreChat/e2e/lighthouse/audit.ts:127:65)
        at /home/runner/work/LibreChat/LibreChat/e2e/lighthouse/load.spec.ts:33:19

    attachment #1: screenshot (image/png) ──────────────────────────────────────────────────────────
    e2e/lighthouse/.test-results/load-serial-database-latency-stays-within-web-vitals-budgets-chromium/test-failed-1.png
    ────────────────────────────────────────────────────────────────────────────────────────────────

    Error Context: e2e/lighthouse/.test-results/load-serial-database-latency-stays-within-web-vitals-budgets-chromium/error-context.md

    attachment #3: trace (application/zip) ─────────────────────────────────────────────────────────
    e2e/lighthouse/.test-results/load-serial-database-latency-stays-within-web-vitals-budgets-chromium/trace.zip
    Usage:

        npx playwright show-trace e2e/lighthouse/.test-results/load-serial-database-latency-stays-within-web-vitals-budgets-chromium/trace.zip

    ────────────────────────────────────────────────────────────────────────────────────────────────


🤖: global teardown has been started
2026-10-29 15:22:55 �[32minfo�[39m: �[32mMongo Connection options�[39m
2026-10-29 15:22:55 �[32minfo�[39m: �[32m{�[39m
�[32m  "bufferCommands": false�[39m
�[32m}�[39m
🤖:  ✅  Connected to Database
🤖:  ✅  Found user in Database
🤖:  ✅  Deleted 1 convos & 2 messages
🤖:  ✅  Deleted user from Database
🤖: global teardown has been started
2026-10-29 15:22:56 �[32minfo�[39m: �[32mMongo Connection options�[39m
2026-10-29 15:22:56 �[32minfo�[39m: �[32m{�[39m
�[32m  "bufferCommands": false�[39m
�[32m}�[39m
🤖:  ✅  Connected to Database
🤖:  ⚠️  User not found in Database
  1 failed
    [chromium] › e2e/lighthouse/load.spec.ts:10:5 › serial database latency stays within web-vitals budgets 

Open the full run

[dustinhealy]

@codex review

[chatgpt-codex-connector]

Codex Review Summary

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Review	Status	Commit	Review trigger
📝 Code Review	✅ Completed 2026-10-30T06:59:26.575012Z	857dbbb	Manual request

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Reviewed commit: 6a664b2c18

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[dustinhealy]

@codex review

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Reviewed commit: 46a4184dec

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[dustinhealy]

@codex review

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Codex Review: Didn't find any major issues. Breezy!

Reviewed commit: 857dbbb89c

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Your team has set up Codex to review pull requests in this repo. Reviews are triggered when you

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