Add DeepWiki MCP plugin - #925
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Included review availability: Your plan provides up to 10 included reviews per hour; 9 remain after this review. 📝 WalkthroughWalkthroughThe PR adds the ChangesDeepWiki MCP provider
Estimated code review effort: 3 (Moderate) | ~30 minutes Merge Risk: 🟡 Moderate · up to The DeepWiki integration may fail on valid multi-line streaming responses, causing repository questions or documentation requests to return errors; this should be fixed or explicitly accepted before merging. The provider label also needs a minor capitalization correction. Sequence Diagram(s)sequenceDiagram
participant CorsairPlugin
participant WikiEndpoint
participant DeepwikiMcpClient
participant DeepWikiMCP
CorsairPlugin->>WikiEndpoint: Invoke wiki operation
WikiEndpoint->>DeepwikiMcpClient: Send tools/call request
DeepwikiMcpClient->>DeepWikiMCP: Send authenticated HTTP request
DeepWikiMCP-->>DeepwikiMcpClient: Return JSON-RPC or SSE response
DeepwikiMcpClient-->>WikiEndpoint: Return validated result or API error
WikiEndpoint-->>CorsairPlugin: Return endpoint response
Suggested reviewers: 🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
✨ Finishing Touches 💡 1🛠️ Fix failing CI checks 💡
🧪 Generate unit tests (beta)
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Greptile SummaryThe PR adds and registers a DeepWiki MCP plugin with three validated wiki operations, bearer-token authentication, JSON-RPC/SSE response handling, and package-level tests.
Confidence Score: 5/5The PR appears safe to merge. No blocking failure remains. Important Files Changed
Sequence DiagramsequenceDiagram
participant App as Corsair application
participant Plugin as DeepWiki plugin
participant Client as MCP client
participant API as DeepWiki MCP service
App->>Plugin: wiki operation(input)
Plugin->>Client: callDeepwikiMcpTool(name, input, key, schema)
Client->>API: POST /mcp (JSON-RPC tools/call)
API-->>Client: JSON or SSE response
Client->>Client: Match request ID and validate result
Client-->>Plugin: Validated tool response
Plugin->>Plugin: Log completed operation
Plugin-->>App: Tool response
Reviews (3): Last reviewed commit: "chore(deepwikimcp): drop reviewer-facing..." | Re-trigger Greptile |
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Plugin PR scorecard —
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| Check | Status | Notes |
|---|---|---|
| R1 — Scope: plugin files only | ✅ | |
| R2 — Tests with assertions | ✅ | |
| R3 — Description complete | ✅ | |
| R3 — Linked issue / claim | ✅ | |
| R4 — Demo video / recording | ❌ | Required in "Screenshots / Demos" before a maintainer reviews |
Rules: PLUGIN_PR_RULES.md · re-runs on every push
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Hey @SreeTarak2, thanks for the contribution! 🏴☠️ Before a maintainer reviews, please fix the items below — the review re-runs automatically on your next push. Must fix
Rule Used: Flag boilerplate residue from the plugin generator... (source) Knowledge Base Used: The provider-plugin package pattern
Knowledge Base Used: The provider-plugin package pattern
Rule Used: Flag Note: If this suggestion doesn't match your team's coding style, reply to this and let me know. I'll remember it for next time! PR requirements (rules)
If anything remains after your next push, a maintainer will take it from there and do the final review and merge. |
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Actionable comments posted: 6
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Inline comments:
In `@packages/corsair/core/constants.ts`:
- Line 252: Update the display label for the deepwikimcp provider in the
provider constants to use the correct capitalization, “DeepWiki MCP”, while
preserving the existing provider key and surrounding entries.
In `@packages/deepwikimcp/client.ts`:
- Around line 98-100: Update the error wrapping in the catch block to preserve
the JSON-RPC error code from the existing DeepwikiMcpAPIError thrown by the
client request flow. When constructing the replacement DeepwikiMcpAPIError in
the Error branch, pass through the original error’s code along with its message
so callers retain the server-provided code.
- Around line 31-42: Update the SSE parsing logic in the response parser to
group each complete event, concatenate all of an event’s data: lines with
newline separators, and parse JSON only from complete events. Ignore
notification JSON-RPC messages and select the final response message containing
the tool result, while preserving the existing DeepwikiMcpAPIError behavior when
no suitable data event exists.
In `@packages/deepwikimcp/endpoints/wiki.ts`:
- Around line 26-37: Update the ask_question endpoint around callTool and
logEventFromContext to parse the returned response with the matching
DeepwikiMcpEndpointOutputSchemas schema before logging or returning it. Keep the
existing askQuestion output type and completed-event flow, but ensure the value
passed to logging and returned is schema-validated rather than relying on the
callTool generic.
In `@packages/deepwikimcp/index.ts`:
- Around line 136-139: Remove the unsupported authentication and tenant-routing
contract from packages/deepwikimcp/index.ts, including deepwikiMcpAuthConfig and
its api_key/oauth_2 tenant entries. Remove the OAuth tenant-link resolver in
packages/deepwikimcp/webhooks/oauth-tenant-link.ts (lines 6-30) and the webhook
matcher and registration in packages/deepwikimcp/webhooks/tenant-matcher.ts
(lines 8-24); no replacement is needed because DeepWiki MCP is documented as a
public unauthenticated service.
In `@packages/deepwikimcp/webhooks/types.ts`:
- Around line 60-65: Remove the unimplemented DeepWiki MCP webhook surface:
delete verifyDeepwikiMcpWebhookSignature from types.ts, remove the example
webhook registration and matcher in webhooks/example.ts, and remove the
corresponding webhook setup in index.ts. Do not expose inbound webhook handling
unless a documented signed protocol is implemented.
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Fix all unresolved CodeRabbit comments on this PR:
- Push a commit to this branch (recommended)
- Create a new PR with the fixes
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📒 Files selected for processing (19)
packages/corsair/core/constants.tspackages/deepwikimcp/client.tspackages/deepwikimcp/endpoints/index.tspackages/deepwikimcp/endpoints/types.tspackages/deepwikimcp/endpoints/wiki.tspackages/deepwikimcp/error-handlers.tspackages/deepwikimcp/index.tspackages/deepwikimcp/jest.config.cjspackages/deepwikimcp/package.jsonpackages/deepwikimcp/schema.test.tspackages/deepwikimcp/schema/database.tspackages/deepwikimcp/schema/index.tspackages/deepwikimcp/tsconfig.jsonpackages/deepwikimcp/tsup.config.tspackages/deepwikimcp/webhooks/example.tspackages/deepwikimcp/webhooks/index.tspackages/deepwikimcp/webhooks/oauth-tenant-link.tspackages/deepwikimcp/webhooks/tenant-matcher.tspackages/deepwikimcp/webhooks/types.ts
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Dhirenderchoudhary
requested review from
Dhirenderchoudhary
and removed request for
Dhirenderchoudhary
August 22, 2026 06:19
Mayank-saraswal
self-requested a review
August 22, 2026 06:22
Collaborator
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@greptileai review |
Collaborator
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@SreeTarak2 Please add a screenshot or a video link showing the test cases passing. The CI is failing because the demo video or screenshot is required. Once you add it, the CI should go green. |
… with zod SSE parser trusted the first data line; now each data event is parsed and the envelope whose id matches the generated request id wins; malformed lines and unrelated events are skipped. Replaces the JSON.parse type assertion with a zod-validated envelope and per-endpoint output schema parsing (callDeepwikiMcpTool).
Adds client.test.ts following the fetch-mocking pattern from packages/ably: single and multi-event SSE streams, notification skipping by request id, malformed data lines, plain JSON bodies, JSON-RPC error mapping to DeepwikiMcpAPIError with code propagation, missing-result rejection, output schema validation failures, and the tools/call request shape.
Collaborator
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@greptileai review |
Collaborator
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@ambikeesh LGTM from my side. Tests are green and the demo screenshot is added to the description. Please take a look whenever you get time. |
Author
Thank you for running the test on my behalf. |
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Description
Adds a Corsair plugin for the DeepWiki MCP service at https://mcp.deepwiki.com/mcp.
The plugin provides:
wiki.askQuestionfor repository questionswiki.readWikiContentsfor repository documentationwiki.readWikiStructurefor documentation topicsChecklist
Before submitting this PR, please verify the following:
facebook/reactScreenshots / Demos
Manual integration testing successfully called:
read_wiki_structureread_wiki_contentsask_questionRepository tested:
facebook/reactA terminal recording of the successful integration test is available for review.
Summary by CodeRabbit
New Features
Bug Fixes
Tests
Refactor
Closes #924