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Shridhaddavidgomes
Shridhad
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davidgomes
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feat: Support for /sse and OAuth flow (#36)
- [x] Refactor the app to start in both `stdio` and `sse` mode - [x] Using express for `sse` - we can switch to Fastify or something else in future - [x] Added `morgan` for API access logs - [x] Added `winston` for App logs - [x] Implement the OAuth flow as a middle - [x] Using `keyv` and Neon for store tokens and auth codes - [x] Implement the `refresh_token` flow - [x] ~Testing on Vercel~ Deploy on Fly - [x] Security review for OAuth flow - PKCE code exchange, client-secret verification cc: @davidgomes --------- Co-authored-by: David Gomes <[email protected]>
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‎.dockerignore‎

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# flyctl launch added from .gitignore
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**/node_modules
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**/*.log
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**/.env
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**/dist
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**/build
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# VS Code history extension
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**/.history
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fly.toml

‎.env.example‎

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NEON_API_KEY=
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## Anthropic api key to run the evals
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ANTHROPIC_API_KEY=
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ANTHROPIC_API_KEY=
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## Neon API
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NEON_API_HOST=https://api.neon.tech/api/v2
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## OAuth upstream oauth host
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UPSTREAM_OAUTH_HOST='https://oauth2.neon.tech';
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## OAuth client id
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CLIENT_ID=
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## OAuth client secret
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CLIENT_SECRET=
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## Redirect URI for OIDC callback
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REDIRECT_URI=http://localhost:3001/callback
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‎.github/workflows/fly-deploy.yml‎

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# See https://fly.io/docs/app-guides/continuous-deployment-with-github-actions/
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name: Fly Deploy
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on:
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push:
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branches:
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- main
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jobs:
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deploy:
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name: Deploy app
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runs-on: ubuntu-latest
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concurrency: deploy-group # optional: ensure only one action runs at a time
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steps:
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- uses: actions/checkout@v4
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- uses: superfly/flyctl-actions/setup-flyctl@master
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- run: flyctl deploy --remote-only
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env:
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FLY_API_TOKEN: ${{ secrets.FLY_API_TOKEN }}

‎.github/workflows/fly-preview.yml‎

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name: Deploy Preview App
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on:
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# Run this workflow on every PR event. Existing review apps will be updated when the PR is updated.
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pull_request:
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types: [opened, reopened, synchronize, closed, labeled]
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jobs:
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preview:
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if: contains(github.event.pull_request.labels.*.name, 'deploy-preview')
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name: Deploy Preview
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runs-on: ubuntu-latest
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concurrency: deploy-group # optional: ensure only one action runs at a time
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steps:
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- uses: actions/checkout@v4
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- uses: superfly/flyctl-actions/setup-flyctl@master
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- run: flyctl secrets set --app preview-mcp-server-neon CLIENT_ID=${{secrets.CLIENT_ID}} CLIENT_SECRET=${{secrets.CLIENT_SECRET}} OAUTH_DATABASE_URL=${{secrets.PREVIEW_OAUTH_DATABASE_URL}} SERVER_HOST=${{vars.PREVIEW_SERVER_HOST}} NEON_API_HOST=${{vars.NEON_API_HOST_STAGING}} UPSTREAM_OAUTH_HOST=${{vars.OAUTH_HOST_STAGING}}
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env:
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FLY_API_TOKEN: ${{ secrets.FLY_API_TOKEN }}
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- run: flyctl deploy --remote-only --config ./fly.preview.toml
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env:
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FLY_API_TOKEN: ${{ secrets.FLY_API_TOKEN }}

‎CHANGELOG.md‎

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# Changelog
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## UNRELEASED
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- Feature: Support for remote MCP with OAuth flow.
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## [0.3.7] - 2025-04-23
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- Fixes Neon Auth instructions to install latest version of the SDK

‎Dockerfile.fly‎

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# Use the imbios/bun-node image as the base image with Node and Bun
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# Keep bun and node version in sync with package.json
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ARG NODE_VERSION=22.0.0
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ARG BUN_VERSION=1.1.38
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FROM imbios/bun-node:1.1.38-22-slim AS base
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LABEL fly_launch_runtime="Node.js"
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# Set the working directory in the container
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WORKDIR /app
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# Set production environment
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ENV NODE_ENV="production"
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# Throw-away build stage to reduce size of final image
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From base As builder
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# Install packages needed to build node modules
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RUN apt-get update -qq && \
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apt-get install --no-install-recommends -y build-essential node-gyp pkg-config python-is-python3
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# Copy package.json and package-lock.json
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COPY package.json package-lock.json ./
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# Copy the entire project to the working directory
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COPY . .
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# Install the dependencies and devDependencies
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RUN npm ci --include=dev
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# Build the project
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RUN npm run build
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# Remove development dependencies
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RUN npm prune --omit=dev
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# Final stage for app image
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FROM base
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# Copy built application
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COPY --from=builder /app /app
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# Define environment variables
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ENV NODE_ENV=production
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EXPOSE 3001
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# Specify the command to run the MCP server
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CMD ["node", "dist/index.js", "start:sse"]

‎bun.lock‎

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‎fly.preview.toml‎

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#
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# See https://fly.io/docs/reference/configuration/ for information about how to use this file.
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#
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app = 'preview-mcp-server-neon'
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primary_region = 'fra'
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[build]
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dockerfile = 'Dockerfile.fly'
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[http_service]
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internal_port = 3001
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force_https = true
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auto_stop_machines = 'stop'
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auto_start_machines = true
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min_machines_running = 0
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processes = ['app']
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[[vm]]
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memory = '1gb'
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cpu_kind = 'shared'
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cpus = 1

‎fly.toml‎

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#
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# See https://fly.io/docs/reference/configuration/ for information about how to use this file.
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#
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app = 'mcp-server-neon'
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primary_region = 'ams'
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[build]
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dockerfile = 'Dockerfile.fly'
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[http_service]
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internal_port = 3001
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force_https = true
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auto_stop_machines = 'stop'
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auto_start_machines = true
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min_machines_running = 1
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processes = ['app']
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[[vm]]
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memory = '2gb'
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cpu_kind = 'performance'
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cpus = 1

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