Best possible solution:

Keep the helper-level abort propagation if that is the intended scope, and wire a real provider batch cancellation signal in this PR or a follow-up if maintainers want end-to-end batch timeout/cancel behavior.

Do we have a high-confidence way to reproduce the issue?

Yes at the helper level from source inspection: current main has abort-aware response readers, but uploadBatchJsonlFile has no signal parameter and calls them without one. I did not run the PR's Vitest lane in this read-only review.

Is this the best way to solve the issue?

Yes for the helper-level bug: forwarding the caller signal through guarded fetch and both response readers matches the existing postJson pattern. It is not yet proven as an end-to-end provider batch cancellation fix because current OpenAI and Voyage batch callers do not pass a signal.

AGENTS.md: found and applied where relevant.

Codex review notes: model internal, reasoning high; reviewed against aa479ac7d8f7.

Label changes:

• add P2: This is a bounded memory-host SDK cancellation fix with limited blast radius but real runtime-memory impact.
• add merge-risk: 🚨 compatibility: The diff adds an optional parameter to a helper exported through the plugin SDK memory embedding surface, which is an additive compatibility-sensitive API change.
• add rating: 🐚 platinum hermit: Overall readiness is 🐚 platinum hermit; proof is 🌊 off-meta tidepool and patch quality is 🐚 platinum hermit.
• add status: 👀 ready for maintainer look: ClawSweeper has no concrete contributor-facing blocker left for this PR. Not applicable: The contributor real-behavior-proof gate does not apply to this maintainer-labeled MEMBER PR.

Label justifications:

• P2: This is a bounded memory-host SDK cancellation fix with limited blast radius but real runtime-memory impact.
• merge-risk: 🚨 compatibility: The diff adds an optional parameter to a helper exported through the plugin SDK memory embedding surface, which is an additive compatibility-sensitive API change.
• rating: 🐚 platinum hermit: Overall readiness is 🐚 platinum hermit; proof is 🌊 off-meta tidepool and patch quality is 🐚 platinum hermit.
• status: 👀 ready for maintainer look: ClawSweeper has no concrete contributor-facing blocker left for this PR. Not applicable: The contributor real-behavior-proof gate does not apply to this maintainer-labeled MEMBER PR.

PR surface:

Source +3, Tests +79. Total +82 across 2 files.

Acceptance criteria:

• [P1] node --check --experimental-strip-types packages/memory-host-sdk/src/host/batch-upload.ts.
• [P1] node --check --experimental-strip-types packages/memory-host-sdk/src/host/batch-upload.test.ts.
• [P1] node scripts/run-vitest.mjs packages/memory-host-sdk/src/host/batch-upload.test.ts.
• [P1] git diff --check.

What I checked:

• Live PR state: Live GitHub metadata shows this PR is open, draft, mergeable, authored by @vincentkoc, assigned to @vincentkoc, and labeled maintainer. (2acdbf08d6ff)
• Current main helper gap: On current main, uploadBatchJsonlFile has no signal parameter and calls readResponseTextSnippet / readResponseJsonWithLimit without passing a signal. (packages/memory-host-sdk/src/host/batch-upload.ts:14, aa479ac7d8f7)
• Abort-aware reader contract: The response snippet helpers already accept signal and cancel the stream reader when the signal aborts, so the upload wrapper can reuse the existing behavior. (packages/memory-host-sdk/src/host/response-snippet.ts:27, aa479ac7d8f7)
• Sibling helper pattern: postJson already forwards params.signal to withRemoteHttpResponse, non-OK snippets, and successful JSON body reads, matching the shape proposed for batch upload. (packages/memory-host-sdk/src/host/post-json.ts:21, aa479ac7d8f7)
• Exported helper surface: uploadBatchJsonlFile is exported through the memory host SDK and then re-exported through the plugin SDK memory embedding barrel, so the optional parameter is an additive SDK helper surface change. (src/plugin-sdk/memory-core-host-engine-embeddings.ts:35, aa479ac7d8f7)
• Provider caller scope: Current OpenAI and Voyage batch submitters call uploadBatchJsonlFile without a signal, so the PR is helper-level unless provider cancellation is wired separately. (extensions/openai/embedding-batch.ts:67, aa479ac7d8f7)

Likely related people:

• vincentkoc: Git blame, git log, and shortlog for the memory-host SDK upload/response helper path all point to Vincent Koc's recent commits, including the current helper implementation and adjacent bounded batch error-body work. (role: introduced behavior and recent area contributor; confidence: high; commits: 70a48a680d8f, 5df5aa164052, 2acdbf08d6ff; files: packages/memory-host-sdk/src/host/batch-upload.ts, packages/memory-host-sdk/src/host/response-snippet.ts, packages/memory-host-sdk/src/host/post-json.ts)

• 🦀 challenger crab: rare, exceptional readiness with strong proof, clean implementation, and convincing validation.
• 🦞 diamond lobster: very strong readiness with only minor maintainer review expected.
• 🐚 platinum hermit: good normal PR, likely mergeable with ordinary maintainer review.
• 🦐 gold shrimp: useful signal, but proof or patch confidence is still limited.
• 🦪 silver shellfish: thin signal; proof, validation, or implementation needs work.
• 🧂 unranked krab: not merge-ready because proof is missing/unusable or there are serious correctness or safety concerns.
• 🌊 off-meta tidepool: rating does not apply to this item.

Shiny media proof means a screenshot, video, or linked artifact directly shows the changed behavior. Runtime, network, CSP, and security claims still need visible diagnostics.

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