add npm run dev:sdk to get live sdk changes w/ simple server
#533
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felixweinberger
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Jun 23, 2025
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The change lgtm and safe as it's also strictly additive so won't break any workflows - also seems like a nice DevX improvement when working on SDK and debugging at the same time!
Should we add a paragraph somewhere in the README to draw attention to this feature?
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🎭 Playwright E2E Test Results✅ 12 passed Details12 tests across 1 suite 📊 View Detailed HTML Report (download artifacts) |
olaservo
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Jun 25, 2025
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Introduces an
npm run dev:sdkscript that allows live edit/rebuild of the SDK + inspector codebases.TL;DR:
npm run dev:sdk "cd sdk && npm run examples:simple-server:w"and open http://localhost:3000/mcp as SHTTPMotivation and Context
The inspector is great to test SDK changes, but there's a bit of gymastics required: there's no watch-enabled build of the SDK, and no instructions or scripts to
npm link.How Has This Been Tested?
This builds upon modelcontextprotocol/typescript-sdk#663
Checkout this Inspector branch & the SDK:
git clone https://github.com/modelcontextprotocol/typescript-sdk git clone https://github.com/modelcontextprotocol/inspector cd inspector git checkout ochafik/dx-inspector-sdkIf the sdk isn't in
../typescript-sdk, set MCP_SDK envRun the simpleStreamableHttp.ts example server alongside the inspector & SDK:
npm run dev:sdk "cd sdk && npm run examples:simple-server:w"Open http://localhost:3000/mcp as Streamable HTTP in the inspector
Inspector & SDK edits should be reflected ~live
To undo the linking of the local typescript-sdk codebase, run
npm run unlink:sdk && npm i.Breaking Changes
None
Types of changes
Checklist