feat(provider): add Devin CLI via ACP - #13645
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LouisDeconinck wants to merge 5 commits into
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LouisDeconinck wants to merge 5 commits into
LouisDeconinck wants to merge 5 commits into
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T3 Code supports several local coding-agent subscriptions but not Devin CLI, despite Devin shipping an official ACP server (`devin acp`). Adds Devin as a first-class provider on the current provider-instance architecture, alongside Cursor/Grok: - `DevinDriver` + provider settings in contracts; registered in `BUILT_IN_DRIVERS` with an Early Access badge and web/mobile icons. - Status probe reports installed version and uses the credentials stored by `devin auth login`; unauthenticated users are told to run it. - Models are discovered from the account's live `devin acp` session catalog (mode/model/thought_level config options), so SWE-2 and Fusion entries flow through the existing model picker unchanged. - `AcpSessionRuntime` `authMethodId` is now optional: providers whose CLI already holds credentials skip the ACP `authenticate` round trip. Cursor/Grok/Antigravity behavior is unchanged. - Adapter maps turns, streaming, cancellation, session resume, modes, permissions, and MCP through the existing ACP runtime. Prompts are validated before any session config mutation. - Devin text generation (commit messages, PR content, branch names, titles) via a scoped ACP runtime. Devin Cloud orchestration is intentionally out of scope.
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ApprovabilityVerdict: Not approved Macroscope's review found this PR not approvable — This PR adds a complex, cross-cutting Devin ACP provider with authenticated sessions, remote model discovery, permission handling, and text-generation integration, rather than a small isolated change. It also changes product defaults, adds static-analysis suppressions, and retains unresolved runtime-state and cleanup findings that require human assessment. Not approved because:
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A prompt that fails after turn.started — or a steer that fails after
the superseded prompt already skipped completion — left the merged turn
without a terminal event, so threads read as running forever. Emit
turn.completed {state:"failed"} when the last in-flight prompt dies
unsettled.
Also propagate session/delete failures in the model-discovery probe
instead of silently accumulating empty Devin sessions per health check.
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Included review availability: Your plan provides up to 10 included reviews per hour; 8 remain after this review. 📝 WalkthroughWalkthroughAdds Devin as a built-in provider. The changes add provider settings, ACP sessions and model discovery, text-generation operations, client support, and installation and permission-mode documentation. ChangesDevin provider
Priority: ➖ Normal Estimated code review effort: 4 (Complex) | ~60 minutes Change: Feature Sequence Diagram(s)sequenceDiagram
participant Client
participant DevinAdapter
participant DevinAcpSupport
participant DevinACP
Client->>DevinAdapter: Start Devin session
DevinAdapter->>DevinAcpSupport: Create ACP runtime
DevinAdapter->>DevinACP: Configure model and mode
Client->>DevinAdapter: Send prompt
DevinAdapter->>DevinACP: Submit prompt and receive session events
Possibly related PRs
Suggested reviewers: Merge Risk: ⚪ Minimal · up to No material user-impacting defect was established in the provider integration. Authentication, model configuration, and environment propagation retain their expected behavior; no specific merge blocker remains beyond normal checks. Security Architecture ReviewSecurity architecture risk: 🟡 Moderate · up to A newly supported coding provider can act using locally stored credentials. It starts disabled and uses existing approval settings, but the duration of its permissions and some failure behavior still need confirmation. Retained concerns Security review detailsSecurity Blast Radius
Security Findings and Attack Paths
Trust Boundaries and Controls
Resilience and Maintainability Implications
Hardening Proposals
🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
✨ Finishing Touches🧪 Generate unit tests (beta)
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Actionable comments posted: 3
- 🪄 Fix CodeRabbit comments on this PR
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Inline comments:
In `@apps/server/scripts/acp-mock-agent.ts`:
- Around line 651-669: Move the Devin model validation in the
`session/set_config_option` handler before the generic state-update logic that
assigns `currentModelId`. Keep rejected model requests from mutating state, and
remove the later duplicate validation block.
In `@apps/server/src/provider/Layers/DevinAdapter.ts`:
- Around line 635-643: Update the user approval response in the
permission-selection flow to return the option ID from params.options matching
the resolved decision’s kind, rather than always using the fixed ID from
acpPermissionOutcome. Preserve the cancelled outcome and use the existing
mapping only if no matching offered option is found.
In `@apps/server/src/provider/Layers/DevinProvider.ts`:
- Around line 364-367: In the Devin model discovery flow, catch only failures
from the `session/delete` request after `buildDevinDiscoveredModels` succeeds,
log the cleanup failure, and still return the discovered models. Do not suppress
discovery errors or imply that session deletion succeeded.
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📒 Files selected for processing (28)
apps/mobile/src/components/ProviderIcon.tsxapps/server/scripts/acp-mock-agent.tsapps/server/src/provider/Drivers/DevinDriver.tsapps/server/src/provider/Layers/DevinAdapter.test.tsapps/server/src/provider/Layers/DevinAdapter.tsapps/server/src/provider/Layers/DevinProvider.test.tsapps/server/src/provider/Layers/DevinProvider.tsapps/server/src/provider/acp/AcpSessionRuntime.tsapps/server/src/provider/acp/DevinAcpSupport.test.tsapps/server/src/provider/acp/DevinAcpSupport.tsapps/server/src/provider/builtInDrivers.tsapps/server/src/provider/providerStatusCache.tsapps/server/src/serverSettings.tsapps/server/src/textGeneration/DevinTextGeneration.tsapps/web/src/components/Icons.tsxapps/web/src/components/chat/ModelPickerContent.tsxapps/web/src/components/chat/ProviderModelPicker.tsxapps/web/src/components/chat/TraitsPicker.tsxapps/web/src/components/chat/composerProviderState.tsxapps/web/src/components/chat/providerIconUtils.tsapps/web/src/components/settings/ProviderModelsSection.tsxapps/web/src/components/settings/customModelEditor.logic.tsapps/web/src/components/settings/providerDriverMeta.tsapps/web/src/modelSelection.tsdocs/user/install.mddocs/user/permission-modes.mdpackages/contracts/src/model.tspackages/contracts/src/settings.ts
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- Reply to session/request_permission with the optionId Devin actually offered for the resolved decision's kind, falling back to the fixed mapping only when no kind matches; returning an unoffered ID could be rejected by the agent. - Keep model discovery working when probe session/delete fails: the session was still created either way, so log the cleanup failure and return the catalog instead of dropping it. - Reject unknown Devin models in the mock before mutating config state, matching the real server's reject-without-side-effects behavior.
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Problem
T3 Code supports several local coding-agent subscriptions but not Devin CLI, even though Devin ships an official ACP server (
devin acp) intended for ACP-aware hosts.Change
Adds Devin as a first-class provider on the current provider-instance architecture, following the Cursor/Grok provider shape:
DevinDriver+DevinSettingsin contracts, registered inBUILT_IN_DRIVERS. Provider settings show an Early Access badge; web + mobile get the Devin icon.devin auth login; unauthenticated users get a message telling them to run it. No credentials are exposed.devin acpsession catalog (themodelconfig option advertised bysession/new), not hard-coded. SWE-2, Adaptive, and Fusion entries flow through the existing model picker unchanged. Model, mode, and thought level are applied viasession/set_config_option(Devin has nosession/set_model).AcpSessionRuntimeauthMethodIdis now optional so a provider whose CLI already holds credentials can skip the ACPauthenticateround trip. Cursor/Grok/Antigravity behavior is unchanged; existing auth tests still cover the authenticated path.DevinAdaptermaps turns, streaming, tool calls, cancellation, session resume, runtime/interaction modes onto Devin'saccept-edits/smart/ask/plan/bypassmodes, permissions, and MCP through the existing ACP runtime and orchestration events. Empty turns are validated before any session config mutation so a rejected prompt cannot leave cached session state inconsistent.DevinTextGenerationcovers commit messages, PR content, branch names, and thread titles through a scoped ACP runtime.Scope
Intentionally deferred:
/handoff.Validation
vp test runon the new suites:DevinAdapter.test.ts,DevinProvider.test.ts,DevinAcpSupport.test.ts— 30 tests, all passing (spawn command, missing binary, authenticated/unauthenticated status, model parsing incl. stderr noise, session create/prompt/stream/cancel, model selection, empty-turn ordering, optional-auth runtime).tsc --noEmitover the changed server + contract files: clean. Targeted oxlint on changed files: clean.devin acp(CLI v3000.11.3, stored login): provider detected, authenticated status shown, 95-model account catalog loaded, SWE-2 selected, one thread run end-to-end with a streamed response and thought block. Screenshots above. Full repo typecheck was not run locally; CI covers it.References
Implemented by SWE-2 Max via Devin CLI.
Summary by CodeRabbit