fix(detect-agent): add antigravity environment detection by Grappeggia · Pull Request #15413 · vercel/vercel

Grappeggia · 2026-03-08T20:44:04Z

Summary

Add first-class ANTIGRAVITY_AGENT detection in @vercel/detect-agent using the same env-based pattern as existing agent checks.
Extend known agent typings/constants and add unit coverage for antigravity detection and priority-order behavior.
Document Antigravity support in the package README and include a patch changeset for @vercel/detect-agent.

Testing

CI=1 pnpm test (in packages/detect-agent)
pnpm lint
pnpm type-check (fails due existing repo issues unrelated to this change: missing #wasm/vercel_python_analysis.js in packages/python-analysis and missing ./templates/* modules in packages/cli)

Note

Low Risk Change

This PR adds a new agent detection constant and environment variable check for Antigravity, following the existing pattern for other agents, with corresponding tests and documentation updates.

Adds ANTIGRAVITY constant and ANTIGRAVITY_AGENT env var check in detect-agent package
Extends type definitions and exports for new agent
Adds unit tests for antigravity detection and priority-order behavior

^{Risk assessment for commit ce50f08.}

changeset-bot · 2026-03-08T20:44:12Z

🦋 Changeset detected

Latest commit: ce50f08

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

This PR includes changesets to release 2 packages

Name	Type
@vercel/detect-agent	Patch
vercel	Patch

Not sure what this means? Click here to learn what changesets are.

Click here if you're a maintainer who wants to add another changeset to this PR

github-actions · 2026-03-08T20:45:05Z

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github-actions · 2026-03-08T20:45:27Z

🧪 Unit Test Strategy

Comparing: c6f5ac6 → ce50f08 (view diff)

Strategy: Affected packages only

✅ Only testing packages that have been modified or depend on modified packages.

Affected packages - 2 (5%)

@vercel/detect-agent
vercel

Unaffected packages - 38 (95%)

@vercel-internals/get-package-json
@vercel/backends
@vercel/build-utils
@vercel/cervel
@vercel/cli-auth
@vercel/client
@vercel/config
@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/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

Results

Unit tests: Only affected packages will run unit tests
E2E tests: Running in parallel via E2E Tests workflow
Type checks: Only affected packages will run type checks

This comment is automatically generated based on the affected testing strategy

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@13.7.0 ### Minor Changes - [python] add support for module-based entrypoints for cron jobs ([#15393](#15393)) - For the django frontend, dynamically load settings.py instead of parsing it ([#15367](#15367)) ### Patch Changes - Updated dependencies \[[`83e804013528fc54de31082960ae31f58339bd71`](83e8040), [`921314f958c4ec85adb09e020310a5becb7f866c`](921314f)]: - @vercel/python-analysis@0.9.0 ## vercel@50.29.0 ### Minor Changes - Add interactive mode to `webhooks create` and change warning prefix from `WARN!` to `WARNING!` ([#15406](#15406)) ### Patch Changes - Updated dependencies \[[`32e8ba5f593fdeddeb63d241d7806d6c12fffe76`](32e8ba5), [`83e804013528fc54de31082960ae31f58339bd71`](83e8040), [`0f1fa86770a35d0192d64d36cb46d932e1d2a12a`](0f1fa86), [`813f3d324404237e3806530b465625ea33816370`](813f3d3), [`0a78892b1e155eb4b587a8b84c4e6814f750697f`](0a78892), [`9a973a704b7350e19d0c3ac8e110ce55eea795b2`](9a973a7), [`c6f5ac6c11fb7f431b5fb634a7fb321b10c829af`](c6f5ac6), [`921314f958c4ec85adb09e020310a5becb7f866c`](921314f)]: - @vercel/next@4.15.42 - @vercel/build-utils@13.7.0 - @vercel/python@6.21.0 - @vercel/detect-agent@1.1.1 - @vercel/static-build@2.8.46 - @vercel/backends@0.0.42 - @vercel/elysia@0.1.45 - @vercel/express@0.1.54 - @vercel/fastify@0.1.48 - @vercel/go@3.4.3 - @vercel/h3@0.1.54 - @vercel/hono@0.2.48 - @vercel/hydrogen@1.3.5 - @vercel/koa@0.1.28 - @vercel/nestjs@0.2.49 - @vercel/node@5.6.12 - @vercel/redwood@2.4.9 - @vercel/remix-builder@5.6.0 - @vercel/ruby@2.3.2 - @vercel/rust@1.0.5 ## @vercel/fs-detectors@5.9.0 ### Minor Changes - [python] add support for module-based entrypoints for cron jobs ([#15393](#15393)) ### Patch Changes - [python] add support for Python worker services with Django tasks ([#15396](#15396)) ## @vercel/python@6.21.0 ### Minor Changes - [python] add support for module-based entrypoints for cron jobs ([#15393](#15393)) - Avoid doing entry point detection on every request to a python dev server ([#15365](#15365)) - For the django frontend, dynamically load settings.py instead of parsing it ([#15367](#15367)) ### Patch Changes - speed up python entrypoint detection ([#15402](#15402)) - Add Python builder cache preparation for Build Output API v3 cache globs, the builder virtualenv, and the repo-local uv cache. ([#15407](#15407)) - Updated dependencies \[[`83e804013528fc54de31082960ae31f58339bd71`](83e8040), [`921314f958c4ec85adb09e020310a5becb7f866c`](921314f)]: - @vercel/python-analysis@0.9.0 ## @vercel/python-analysis@0.9.0 ### Minor Changes - [python] add support for module-based entrypoints for cron jobs ([#15393](#15393)) - For the django frontend, dynamically load settings.py instead of parsing it ([#15367](#15367)) ## @vercel/backends@0.0.42 ### Patch Changes - Updated dependencies \[[`83e804013528fc54de31082960ae31f58339bd71`](83e8040), [`921314f958c4ec85adb09e020310a5becb7f866c`](921314f)]: - @vercel/build-utils@13.7.0 ## @vercel/cervel@0.0.29 ### Patch Changes - Updated dependencies \[]: - @vercel/backends@0.0.42 ## @vercel/client@17.2.54 ### Patch Changes - Updated dependencies \[[`83e804013528fc54de31082960ae31f58339bd71`](83e8040), [`921314f958c4ec85adb09e020310a5becb7f866c`](921314f)]: - @vercel/build-utils@13.7.0 ## @vercel/config@0.0.38 ### Patch Changes - Fix type generation ([#15386](#15386)) ## @vercel/detect-agent@1.1.1 ### Patch Changes - Add Antigravity agent detection via `ANTIGRAVITY_AGENT` environment variable ([#15413](#15413)) - Detect Codex when `CODEX_CI` or `CODEX_THREAD_ID` is present. ([#15412](#15412)) ## @vercel/elysia@0.1.45 ### Patch Changes - Updated dependencies \[]: - @vercel/node@5.6.12 ## @vercel/express@0.1.54 ### Patch Changes - Updated dependencies \[]: - @vercel/node@5.6.12 - @vercel/cervel@0.0.29 ## @vercel/fastify@0.1.48 ### Patch Changes - Updated dependencies \[]: - @vercel/node@5.6.12 ## @vercel/gatsby-plugin-vercel-builder@2.0.144 ### Patch Changes - Updated dependencies \[[`83e804013528fc54de31082960ae31f58339bd71`](83e8040), [`921314f958c4ec85adb09e020310a5becb7f866c`](921314f)]: - @vercel/build-utils@13.7.0 ## @vercel/h3@0.1.54 ### Patch Changes - Updated dependencies \[]: - @vercel/node@5.6.12 ## @vercel/hono@0.2.48 ### Patch Changes - Updated dependencies \[]: - @vercel/node@5.6.12 ## @vercel/koa@0.1.28 ### Patch Changes - Updated dependencies \[]: - @vercel/node@5.6.12 ## @vercel/nestjs@0.2.49 ### Patch Changes - Updated dependencies \[]: - @vercel/node@5.6.12 ## @vercel/next@4.15.42 ### Patch Changes - Revert "[next] vary fallback allowQuery for partial fallback shells" ([#15418](#15418)) ## @vercel/node@5.6.12 ### Patch Changes - Updated dependencies \[[`83e804013528fc54de31082960ae31f58339bd71`](83e8040), [`921314f958c4ec85adb09e020310a5becb7f866c`](921314f)]: - @vercel/build-utils@13.7.0 ## @vercel/static-build@2.8.46 ### Patch Changes - Updated dependencies \[]: - @vercel/gatsby-plugin-vercel-builder@2.0.144 ## @vercel/python-runtime@0.6.0 ### Minor Changes - [python] add support for Python worker services with Django tasks ([#15396](#15396)) - [python] add support for module-based entrypoints for cron jobs ([#15393](#15393))  > [!NOTE] > Low Risk Change > > This PR is an automated Changesets release that only updates version numbers in package.json files, CHANGELOG.md files, and deletes changeset markdown files — no functional code changes. > > - Version bumps across ~30 packages (patch/minor) > - Changelog and changeset file updates only > - Single constant update: VERCEL_RUNTIME_VERSION = '0.6.0' > > <sup>Risk assessment for [commit d3cf7ea](https://github.com/vercel/vercel/commit/d3cf7ea8deab73a058f4228f0346317fcf3e3dbc).</sup>  Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

Grappeggia requested review from a team as code owners March 8, 2026 20:44

vercel bot deployed to Preview March 8, 2026 20:44 View deployment

Grappeggia requested a review from tknickman March 8, 2026 21:11

Grappeggia changed the base branch from codex-detect to main March 8, 2026 21:14

Grappeggia force-pushed the ag-detect branch from 622251f to 5ae6619 Compare March 8, 2026 21:19

vercel bot deployed to Preview March 8, 2026 21:20 View deployment

Grappeggia enabled auto-merge (squash) March 9, 2026 15:17

fix(detect-agent): add antigravity environment detection

ce50f08

Grappeggia force-pushed the ag-detect branch from 5ae6619 to ce50f08 Compare March 9, 2026 15:29

vercel bot deployed to Preview March 9, 2026 15:30 View deployment

tknickman approved these changes Mar 9, 2026

View reviewed changes

Grappeggia merged commit 9a973a7 into main Mar 9, 2026
300 of 302 checks passed

Grappeggia deleted the ag-detect branch March 9, 2026 17:25

vercel-release-bot mentioned this pull request Mar 9, 2026

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fix(detect-agent): add antigravity environment detection#15413

fix(detect-agent): add antigravity environment detection#15413
Grappeggia merged 1 commit intomainfrom
ag-detect

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Summary

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Grappeggia commented Mar 8, 2026 •

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