list_collections fails on Firestore Enterprise Edition with FailedPrecondition (Firestore API data access disabled)

[sureshsdba-creator]

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Description: I am encountering a functional block when using the GeminiCLI extension (Firestore-native MCP Server) with a Firestore Enterprise instance. While the extension successfully initializes and correctly identifies the Project ID, Database ID, and Edition type, it fails specifically when invoking the list_collections tool.

Environment Information:

Project ID: prj-8592e29ef1
Database ID: fstore-ent
Database Edition: Enterprise
Extension/Tool: GeminiCLI (firestore-native MCP)

Steps to Reproduce:

• Connect to the Firestore Enterprise database using the GeminiCLI.
• Issue a command to list collections (e.g., "can you show me the list of collection in the database").
• The list_collections tool is triggered but returns a FailedPrecondition error.

Error Logs:

Text

✓ list_collections (firestore MCP Server) {}

failed to list root collections: rpc error: code = FailedPrecondition desc = Firestore API data access is disabled. Please enable it if you want to access the database through Firestore API.
Additional Context & Analysis: The extension seems to have the necessary permissions to read database metadata (recognizing the ID and edition), but the actual data plane access via the Firestore API is being rejected.

This error typically points to one of the following scenarios in an Enterprise environment:

Request: Could you please clarify if the current extension supports Firestore Enterprise edition features? If it is supported, are there specific configuration requirements or IAM roles (beyond datastore.entities.list) required for Enterprise instances? If not currently supported, please consider this a feature request to enable compatibility for Enterprise-tier databases.

Suggested Solution(s)

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Additional Details

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[averikitsch]

In general, Firestore Enterprise supports two Data Access Mode: MongoDB and Firestore. To use Firestore API (underline API of Gemini CLI for Firestore extension), a database needs to be created with "Firestore API data access enabled" otherwise it will hit this error message.

[sureshsdba-creator]

I was trying to connect with Firestore with MongoDB API compatiblity database, which come under Firestore Enteprise edition. The database is Mongo API compaitble database is not able to list the collection, it did connected. While requesting to list the collection, it reported the error.

[averikitsch]

Unfortunately we do not support the MongoDB compatible API. You may try the MongoDB extension: https://github.com/mongodb-partners/mongodb-gemini-extension and edit the mongo.config.json to connect with your details (see https://docs.cloud.google.com/firestore/mongodb-compatibility/docs/create-and-query-database).