firebase-tools

• Updated Firestore Emulator to v1.21.0, which adds support for subqueries and new stages like let(...), as well as allowing setting database-edition per-database.
• Suppressed the 'punycode' deprecation warning during firebase deploy on Node 22. (#10385)
• Fixed an issue where hosting deploy allowed publishing to a site in a different project. (#10376)
• Added SSE mode support to firebase mcp. To use it, run firebase mcp --mode=sse --port=3000, and connect your client on http://localhost:3000.
• Update the valid Python runtimes for functions. Default Python runtime is now Python 3.14.
• Fix CLI non-interactive mode for dataconnect init (#10401)
• Fixed issue where rules for non-default Firestore databases were not being deployed correctly.
• Suppress SSR warning for non-SSR Angular projects on init hosting (#10364)
• Updated the SQL Connect emulator to v3.4.6, including internal bug fixes (#10434)
• Fix an issue where deploying multi-codebase functions failed due to a shared source token scraper (#10428)

• Add foundation for being smarter about where to place functions when the region is not specified (#10293)
• Updated Pub/Sub emulator to version 0.8.30
• Renamed Data Connect displayed text to SQL Connect (#10270)
• Added support for the experimental Cloud Functions for Firebase Dart SDK behind the dartfunctions flag
• Updated the SQL Connect emulator to v3.4.5, including internal bug fixes (#10336)

• Added Enterprise Edition support to the Firestore emulator. Configure it by setting firebase.json#firestore.edition or firebase.json#emulators.firestore.edition.
• Fixed an issue where functions deployments would silently fail (#6989)
• Fixed issue where the CLI isn't able to correctly parse command arguments on PowerShell (#7506)
• Add support for Next.js 16 middleware (proxy.ts/proxy.js) (#9631)
• Updates the default region for new App Hosting backends to us-east4 (#10271)
• Fix Next.js image optimization detection in client components (#10228)
• Updates Firebase Data Connect emulator to v3.4.1 (#10290)
  • Upgraded Go runtime to 1.25.9.
  • Bug fix: Fixed an issue that caused Angular SDK generation to fail.

• Add validation to check if backendId exists in firebase.json when --only flag is used. (#10161)
• Updated default Postgres version for Data Connect to 18. (#10234)
• Update Typescript version to v6 in templates for functions and extensions. (#10232)

• Moved MCP server firebase-debug.log to ~/.cache/firebase/firebase-debug.log. (#9982)
• Added a prompt to firebase init to install Agent Skills for Firebase.
• Updated the Firebase Data Connect local toolkit to v3.3.1, which includes the following changes: (#10190)
  • [added] Support for configuring client-side caching in connector.yaml / generate section

• Add support for dataAccessMode in Firestore database creation. This allows choosing between FIRESTORE_NATIVE and MONGODB_COMPATIBLE for Enterprise edition databases.
• Updated Firestore Emulator to v1.20.4, which includes minor bug fixes for Firestore Native Mode.
• Added apptesting:execute command to run App Testing agent tests from YAML files.
• Updated Data Connect emulator to v3.3.0:
  • firebase dataconnect:sdk:generate now performs compilation check first before generating SDKs.
  • Updated the Golang dependency version from 1.24.13 to 1.25.8, which removes support for macOS versions prior to Monterey.
  • Prevent concurrent execution of operations. https://github.com/firebase/firebase-tools/issues/9866
  • Support for skip and include directives.
  • Vector similarity search now supports offset as well as limit

• Updated Pub/Sub emulator to version 0.8.29.

• Add support for VPC direct connect in GCF 2nd gen (#10033)
• Added --only flag for emulators:export (#4033)
• Added support for custom PostgreSQL schema names in Data Connect. (#9271)
• When SSR web app features are detected in the firebase init hosting flow, offer to switch to App Hosting (#9887)
• Removed the experimental web frameworks prompt from firebase init hosting (#9843)
• Added studio:export command to export Firebase Studio projects to Antigravity.

• Added support for next.config.ts and next.config.mts in Next.js deployments (#9871)
• Enabled free trials without a billing instrument for Firebase Data Connect (#10042)

• Added *_EMULATOR_VERSION env variables to allow overriding specific versions of downloadable emulators
• Updated the functions.config deprecation notice from March 2026 to March 2027 (#9941)
• Detects when App Hosting fails to deploy, returning an error. (#8866)
• Add firestore_query_collection tool back to MCP as it is not available in the OneMCP server yet.
• Add support for custom resolvers in Firebase Data Connect (#9967)
• Updated the Firebase Data Connect local toolkit to v3.2.1, which includes the following changes: (#10022)
  • Resolved metadata pathing issue for @redact and @check directives

• Corrects issue with updateService in runv2.ts (#9918)
• Updated suite of MCP tools for Firestore to include many new tools. Firestore tools no longer support emulator mode.
• Updated the Firebase Data Connect local toolkit to v3.2.0, which includes the following changes: (#9975)
  • Support for uuidV7()
  • Support for custom PostgreSQL schema names.

• Updated Python Functions template to use firebase_functions v0.5.x
• Update the Firebase Data Connect local toolkit to v3.1.4, which includes the following changes: (#9944)
  • Add support for @searchable on varchar fields.
  • Fix a runtime error when using aggregations with nested reference fields.
  • Update the Golang dependency version from v1.24.12 to v1.24.13.
• Added Developer Knowledge MCP tools which can search Google doumentation to help agents answer questions.

• Added support for enabling Firebase Authentication providers via firebase deploy. You can configure providers in firebase.json like so:

{
  "auth": {
    "providers": {
      "anonymous": true,
      "emailPassword": true,
      "googleSignIn": {
        "oAuthBrandDisplayName": "My App",
        "supportEmail": "support@myapp.com"
      }
    }
  }
}

• Added initial zip deploy support in functions deploy for HTTP functions (#9707)
• Fixes an issue where Python was missing from the firebase-tools Docker image (#9855).
• Fixes billing information check to use user's project quota (#9879).
• Updated the Firebase Data Connect local toolkit to v3.1.2, which contains the following changes: (#9882)
  • Improved insecure operation warning messages and reduced the severity of existing insecure operation warnings to LOG_ONLY.
  • Updated the Golang dependency version from 1.24.4 to 1.24.12.
• Fixes issue where auth emulator multi-tenant mode exports/imports only users tied to the default tenant (#5623)
• Updated Pub/Sub emulator to version 0.8.27.
• Updated the Data Connect emulator to v3.1.3, which enables the native SQL feature.

• Fixes issues with calls to serviceusage (#9844)

• Added firebase dataconnect:compile command.
• Loads experiments earlier in CLI startup so they can be used earlier. (#9797)
• Fixed issue where AuthBlockingEvent had invalid format for metadata.creationTime and metadata.lastSignInTime. (#8109)
• Fixed issue where Storage security rules is overwritten when running firebase init storage. (#8170)
• Add support for firestoreDataAccessMode, mongodbCompatibleDataAccessMode, and the realtimeUpdatesMode flags for Firestore Database creation (#9817)
• Updated to v3.1.1 of the Data Connect emulator which includes fixes and internal improvements. (#9835)

• Fix the bug when Data Connect emulator hangs with PGlite. (#9756, #9771)
• Updated to v3.1.0 of the Data Connect emulator, which adds support for using distinct: true in combination with orderBy, and other internal improvements (#9778).

• Renamed MCP prompts /firestore:generate_rules to /firestore:generate_security_rules and /storage:generate_rules to /storage:generate_security_rules.

• Fixed pricing calculation for Cloud Functions deployed to newer regions (africa-south1, europe-west8, me-west1, and others) when using minInstances. (#9696)
• Removed MCP tools and prompts that required Gemini in Firebase terms of service.
• Fixes an issue where the --only flag was not always respected for firebase mcp
• Removed timeout when connecting to Cloud SQL. Hopefully, should mitigate issue #9314. (#9725)
• Added /firestore:generate_rules and /storage:generate_rules MCP prompts.
• Update Data Connect Emulator to 3.0.2 (#9738), which addressed many bugs
  • Fixed the mis-leading MISSING_JOIN_TABLE_KEY linter warning on @view. (#9630)
  • Fix SQL error handling bugs with pglite.
  • Fix bug enums not handled in secondary schema arguments.

• Fixed an issue causing ESM errors on Node <20.19 and <22.12.

• Fixed regression where v2 functions sharing the same source triggered separate builds instead of reusing builds (#9685)
• Updated TypeScript templates for ext:dev:init to fix build failures (#9524)
• Updated Pub/Sub emulator to version 0.8.25.
• Fixed a bug when firebase emulators:start incorrectly deletes discovery file of another emulator process (#9672)
• Added onGraphRequest function support (#9612)