[services] add support for `vercel dev` by nsidnev · Pull Request #14805 · vercel/vercel

nsidnev · 2026-01-30T06:35:35Z

Implements automatic discovery of multi-service layouts and services orchestrator for vercel dev for the new project flow from #14776:

changeset-bot · 2026-01-30T06:35:41Z

🦋 Changeset detected

Latest commit: c993b5e

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 18 packages

Name	Type
@vercel/fs-detectors	Minor
@vercel/build-utils	Minor
@vercel/python	Minor
vercel	Minor
@vercel/static-build	Patch
@vercel/backends	Patch
@vercel/client	Patch
@vercel/elysia	Patch
@vercel/express	Patch
@vercel/fastify	Patch
@vercel/gatsby-plugin-vercel-builder	Patch
@vercel/h3	Patch
@vercel/hono	Patch
@vercel/koa	Patch
@vercel/nestjs	Patch
@vercel/node	Patch
@vercel/cervel	Patch
@vercel/introspection	Patch

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github-actions · 2026-01-30T06:35:47Z

📦 CLI Tarball Ready

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  "build": {
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github-actions · 2026-01-30T06:37:05Z

🧪 Unit Test Strategy

Comparing: 81383be → c993b5e (view diff)

Strategy: Code changed outside of a package - running all unit tests

⚠️ All unit tests will run because global code changes could impact all packages.

Affected packages - 41 (100%)

@vercel-internals/get-package-json
@vercel/backends
@vercel/build-utils
@vercel/cervel
@vercel/cli-auth
@vercel/client
@vercel/config
@vercel/detect-agent
@vercel/edge
@vercel/elysia
@vercel/error-utils
@vercel/express
@vercel/fastify
@vercel/firewall
@vercel/frameworks
@vercel/fs-detectors
@vercel/functions
@vercel/gatsby-plugin-vercel-builder
@vercel/go
@vercel/h3
@vercel/hono
@vercel/hydrogen
@vercel/introspection
@vercel/koa
@vercel/nestjs
@vercel/next
@vercel/node
@vercel/oidc
@vercel/oidc-aws-credentials-provider
@vercel/python
@vercel/python-analysis
@vercel/redwood
@vercel/related-projects
@vercel/remix-builder
@vercel/routing-utils
@vercel/ruby
@vercel/rust
@vercel/static-build
@vercel/static-config
examples
vercel

Results

Unit tests: All affected packages will run unit tests
E2E tests: Handled separately (Version Packages PRs or run-e2e-tests label)
Type checks: All affected packages will run type checks

This comment is automatically generated based on the affected testing strategy

packages/cli/src/util/dev/services-orchestrator.ts

ricardo-agz

Nice
This can be a separate PR, but it would be good to add dev support for generic Python apps as well (when framework is null but runtime is python). Sort of like this other generic "pyproject app" idea where we consolidate vc_init_dev_asgi.py and vc_init_dev_wsgi.py and run the Python dev server for everything even non Flask and FastAPI apps

This PR was opened by the [Changesets release](https://github.com/changesets/action) GitHub action. When you're ready to do a release, you can merge this and the packages will be published to npm automatically. If you're not ready to do a release yet, that's fine, whenever you add more changesets to main, this PR will be updated. # Releases ## @vercel/build-utils@13.3.0 ### Minor Changes - Add multi-service support for `vercel dev`. When `VERCEL_USE_EXPERIMENTAL_SERVICES=1` is set, the CLI auto-detects different multi-service layouts and orchestrates dev servers for each service through a single proxy server. ([#14805](#14805)) ### Patch Changes - [services] add `services` to `config.json` ([#14847](#14847)) ## vercel@50.11.0 ### Minor Changes - Add multi-service support for `vercel dev`. When `VERCEL_USE_EXPERIMENTAL_SERVICES=1` is set, the CLI auto-detects different multi-service layouts and orchestrates dev servers for each service through a single proxy server. ([#14805](#14805)) ### Patch Changes - [services] add `services` to `config.json` ([#14847](#14847)) - Updated dependencies \[[`3ee91bd6782888e626486c706dcba65fd51ba0e5`](3ee91bd), [`81383be63cb499db3c2f1e3ef39153d6e5f1f5cf`](81383be), [`2a6e1f5d55080e205e55481fa096b043650b382a`](2a6e1f5), [`ce9208286ed6d29d6764ea4d290680ad98e65d22`](ce92082)]: - @vercel/build-utils@13.3.0 - @vercel/python@6.6.0 - @vercel/next@4.15.22 - @vercel/backends@0.0.27 - @vercel/elysia@0.1.29 - @vercel/express@0.1.38 - @vercel/fastify@0.1.32 - @vercel/go@3.3.4 - @vercel/h3@0.1.38 - @vercel/hono@0.2.32 - @vercel/hydrogen@1.3.5 - @vercel/koa@0.1.12 - @vercel/nestjs@0.2.33 - @vercel/node@5.5.30 - @vercel/redwood@2.4.9 - @vercel/remix-builder@5.5.10 - @vercel/ruby@2.2.5 - @vercel/rust@1.0.5 - @vercel/static-build@2.8.31 ## @vercel/fs-detectors@5.8.0 ### Minor Changes - Add multi-service support for `vercel dev`. When `VERCEL_USE_EXPERIMENTAL_SERVICES=1` is set, the CLI auto-detects different multi-service layouts and orchestrates dev servers for each service through a single proxy server. ([#14805](#14805)) ### Patch Changes - [services] add `services` to `config.json` ([#14847](#14847)) ## @vercel/python@6.6.0 ### Minor Changes - Add multi-service support for `vercel dev`. When `VERCEL_USE_EXPERIMENTAL_SERVICES=1` is set, the CLI auto-detects different multi-service layouts and orchestrates dev servers for each service through a single proxy server. ([#14805](#14805)) ### Patch Changes - Skip filtering system pythons on local vercel builds. ([#14858](#14858)) ## @vercel/backends@0.0.27 ### Patch Changes - Updated dependencies \[[`3ee91bd6782888e626486c706dcba65fd51ba0e5`](3ee91bd), [`ce9208286ed6d29d6764ea4d290680ad98e65d22`](ce92082)]: - @vercel/build-utils@13.3.0 ## @vercel/cervel@0.0.14 ### Patch Changes - Updated dependencies \[]: - @vercel/backends@0.0.27 ## @vercel/client@17.2.33 ### Patch Changes - Updated dependencies \[[`3ee91bd6782888e626486c706dcba65fd51ba0e5`](3ee91bd), [`ce9208286ed6d29d6764ea4d290680ad98e65d22`](ce92082)]: - @vercel/build-utils@13.3.0 ## @vercel/elysia@0.1.29 ### Patch Changes - Updated dependencies \[]: - @vercel/node@5.5.30 ## @vercel/express@0.1.38 ### Patch Changes - Updated dependencies \[]: - @vercel/node@5.5.30 - @vercel/cervel@0.0.14 ## @vercel/fastify@0.1.32 ### Patch Changes - Updated dependencies \[]: - @vercel/node@5.5.30 ## @vercel/gatsby-plugin-vercel-builder@2.0.129 ### Patch Changes - Updated dependencies \[[`3ee91bd6782888e626486c706dcba65fd51ba0e5`](3ee91bd), [`ce9208286ed6d29d6764ea4d290680ad98e65d22`](ce92082)]: - @vercel/build-utils@13.3.0 ## @vercel/h3@0.1.38 ### Patch Changes - Updated dependencies \[]: - @vercel/node@5.5.30 ## @vercel/hono@0.2.32 ### Patch Changes - Updated dependencies \[]: - @vercel/node@5.5.30 ## @vercel/introspection@0.0.13 ### Patch Changes - Updated dependencies \[]: - @vercel/backends@0.0.27 ## @vercel/koa@0.1.12 ### Patch Changes - Updated dependencies \[]: - @vercel/node@5.5.30 ## @vercel/nestjs@0.2.33 ### Patch Changes - Updated dependencies \[]: - @vercel/node@5.5.30 ## @vercel/next@4.15.22 ### Patch Changes - Remove 404.html prerenders from serverless function ([#14836](#14836)) ## @vercel/node@5.5.30 ### Patch Changes - Updated dependencies \[[`3ee91bd6782888e626486c706dcba65fd51ba0e5`](3ee91bd), [`ce9208286ed6d29d6764ea4d290680ad98e65d22`](ce92082)]: - @vercel/build-utils@13.3.0 ## @vercel/static-build@2.8.31 ### Patch Changes - Updated dependencies \[]: - @vercel/gatsby-plugin-vercel-builder@2.0.129 Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

Implements automatic discovery of multi-service layouts and services orchestrator for `vercel dev` for the new project flow from #14776

This PR was opened by the [Changesets release](https://github.com/changesets/action) GitHub action. When you're ready to do a release, you can merge this and the packages will be published to npm automatically. If you're not ready to do a release yet, that's fine, whenever you add more changesets to main, this PR will be updated. # Releases ## @vercel/build-utils@13.3.0 ### Minor Changes - Add multi-service support for `vercel dev`. When `VERCEL_USE_EXPERIMENTAL_SERVICES=1` is set, the CLI auto-detects different multi-service layouts and orchestrates dev servers for each service through a single proxy server. ([#14805](#14805)) ### Patch Changes - [services] add `services` to `config.json` ([#14847](#14847)) ## vercel@50.11.0 ### Minor Changes - Add multi-service support for `vercel dev`. When `VERCEL_USE_EXPERIMENTAL_SERVICES=1` is set, the CLI auto-detects different multi-service layouts and orchestrates dev servers for each service through a single proxy server. ([#14805](#14805)) ### Patch Changes - [services] add `services` to `config.json` ([#14847](#14847)) - Updated dependencies \[[`3ee91bd6782888e626486c706dcba65fd51ba0e5`](3ee91bd), [`81383be63cb499db3c2f1e3ef39153d6e5f1f5cf`](81383be), [`2a6e1f5d55080e205e55481fa096b043650b382a`](2a6e1f5), [`ce9208286ed6d29d6764ea4d290680ad98e65d22`](ce92082)]: - @vercel/build-utils@13.3.0 - @vercel/python@6.6.0 - @vercel/next@4.15.22 - @vercel/backends@0.0.27 - @vercel/elysia@0.1.29 - @vercel/express@0.1.38 - @vercel/fastify@0.1.32 - @vercel/go@3.3.4 - @vercel/h3@0.1.38 - @vercel/hono@0.2.32 - @vercel/hydrogen@1.3.5 - @vercel/koa@0.1.12 - @vercel/nestjs@0.2.33 - @vercel/node@5.5.30 - @vercel/redwood@2.4.9 - @vercel/remix-builder@5.5.10 - @vercel/ruby@2.2.5 - @vercel/rust@1.0.5 - @vercel/static-build@2.8.31 ## @vercel/fs-detectors@5.8.0 ### Minor Changes - Add multi-service support for `vercel dev`. When `VERCEL_USE_EXPERIMENTAL_SERVICES=1` is set, the CLI auto-detects different multi-service layouts and orchestrates dev servers for each service through a single proxy server. ([#14805](#14805)) ### Patch Changes - [services] add `services` to `config.json` ([#14847](#14847)) ## @vercel/python@6.6.0 ### Minor Changes - Add multi-service support for `vercel dev`. When `VERCEL_USE_EXPERIMENTAL_SERVICES=1` is set, the CLI auto-detects different multi-service layouts and orchestrates dev servers for each service through a single proxy server. ([#14805](#14805)) ### Patch Changes - Skip filtering system pythons on local vercel builds. ([#14858](#14858)) ## @vercel/backends@0.0.27 ### Patch Changes - Updated dependencies \[[`3ee91bd6782888e626486c706dcba65fd51ba0e5`](3ee91bd), [`ce9208286ed6d29d6764ea4d290680ad98e65d22`](ce92082)]: - @vercel/build-utils@13.3.0 ## @vercel/cervel@0.0.14 ### Patch Changes - Updated dependencies \[]: - @vercel/backends@0.0.27 ## @vercel/client@17.2.33 ### Patch Changes - Updated dependencies \[[`3ee91bd6782888e626486c706dcba65fd51ba0e5`](3ee91bd), [`ce9208286ed6d29d6764ea4d290680ad98e65d22`](ce92082)]: - @vercel/build-utils@13.3.0 ## @vercel/elysia@0.1.29 ### Patch Changes - Updated dependencies \[]: - @vercel/node@5.5.30 ## @vercel/express@0.1.38 ### Patch Changes - Updated dependencies \[]: - @vercel/node@5.5.30 - @vercel/cervel@0.0.14 ## @vercel/fastify@0.1.32 ### Patch Changes - Updated dependencies \[]: - @vercel/node@5.5.30 ## @vercel/gatsby-plugin-vercel-builder@2.0.129 ### Patch Changes - Updated dependencies \[[`3ee91bd6782888e626486c706dcba65fd51ba0e5`](3ee91bd), [`ce9208286ed6d29d6764ea4d290680ad98e65d22`](ce92082)]: - @vercel/build-utils@13.3.0 ## @vercel/h3@0.1.38 ### Patch Changes - Updated dependencies \[]: - @vercel/node@5.5.30 ## @vercel/hono@0.2.32 ### Patch Changes - Updated dependencies \[]: - @vercel/node@5.5.30 ## @vercel/introspection@0.0.13 ### Patch Changes - Updated dependencies \[]: - @vercel/backends@0.0.27 ## @vercel/koa@0.1.12 ### Patch Changes - Updated dependencies \[]: - @vercel/node@5.5.30 ## @vercel/nestjs@0.2.33 ### Patch Changes - Updated dependencies \[]: - @vercel/node@5.5.30 ## @vercel/next@4.15.22 ### Patch Changes - Remove 404.html prerenders from serverless function ([#14836](#14836)) ## @vercel/node@5.5.30 ### Patch Changes - Updated dependencies \[[`3ee91bd6782888e626486c706dcba65fd51ba0e5`](3ee91bd), [`ce9208286ed6d29d6764ea4d290680ad98e65d22`](ce92082)]: - @vercel/build-utils@13.3.0 ## @vercel/static-build@2.8.31 ### Patch Changes - Updated dependencies \[]: - @vercel/gatsby-plugin-vercel-builder@2.0.129 Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

nsidnev requested review from 1st1 and ricardo-agz January 30, 2026 06:35

nsidnev requested a review from a team January 30, 2026 06:36

vercel bot reviewed Jan 30, 2026

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packages/cli/src/util/dev/services-orchestrator.ts Show resolved Hide resolved

Base automatically changed from ricardo/be-406-services-new-project-v2 to main January 30, 2026 19:21

nsidnev added 2 commits February 2, 2026 11:33

auto-detect multi-service layouts

fd05be1

multi-service support for vercel dev

ca22751

nsidnev force-pushed the nsidnev/local-services-dev branch from c55da3b to ca22751 Compare February 2, 2026 16:41

nsidnev marked this pull request as ready for review February 2, 2026 16:42

nsidnev requested review from a team, agadzik and chloetedder as code owners February 2, 2026 16:42

vercel bot deployed to Preview February 2, 2026 16:42 View deployment

nsidnev added 2 commits February 2, 2026 11:48

fast fail if the service did not acquire the port

bbbe3af

changeset

1f07e9f

vercel bot deployed to Preview February 2, 2026 16:57 View deployment

fix express startup

9b04b14

vercel bot deployed to Preview February 3, 2026 00:24 View deployment

ricardo-agz added the run-e2e-tests label Feb 3, 2026

Merge branch 'main' into nsidnev/local-services-dev

a3e9498

vercel bot deployed to Preview February 3, 2026 22:45 View deployment

ricardo-agz approved these changes Feb 4, 2026

View reviewed changes

Merge branch 'main' into nsidnev/local-services-dev

408fb3f

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nsidnev enabled auto-merge (squash) February 4, 2026 17:37

nsidnev disabled auto-merge February 4, 2026 17:48

hide starting commands

13f94c3

Merge branch 'main' into nsidnev/local-services-dev

c993b5e

vercel bot deployed to Preview February 4, 2026 19:13 View deployment

nsidnev merged commit ce92082 into main Feb 4, 2026
405 of 409 checks passed

nsidnev deleted the nsidnev/local-services-dev branch February 4, 2026 19:46

vercel-release-bot mentioned this pull request Feb 4, 2026

Version Packages #14860

Merged

tonypan2 pushed a commit that referenced this pull request Feb 5, 2026

[services] add support for vercel dev (#14805)

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Implements automatic discovery of multi-service layouts and services orchestrator for `vercel dev` for the new project flow from #14776

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[services] add support for `vercel dev`#14805

[services] add support for `vercel dev`#14805
nsidnev merged 9 commits intomainfrom
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