# Google Cloud Storage (slim)

> Google Cloud Storage is Google Cloud's object store for buckets and objects, reached through JSON and XML REST APIs, a gRPC Storage Control API, the gcloud CLI, client libraries and a generally available remote MCP server.

- Full: https://www.anchorterminal.com/tools/google-cloud-storage.md (~7,800 tokens) · this version ~1,480 tokens · JSON https://www.anchorterminal.com/tools/google-cloud-storage.json · canonical https://www.anchorterminal.com/tools/google-cloud-storage
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · MCP: https://www.anchorterminal.com/mcp · Updated: 2026-11-07 · pricing https://www.anchorterminal.com/tools/google-cloud-storage#pricing · reviews https://www.anchorterminal.com/tools/google-cloud-storage#reviews
- Licence: CC BY 4.0, credit Anchor Terminal and link this page (https://www.anchorterminal.com/terms/#data)

**BB · 76.7/100 · rank #41 of 1486 · #4 in File storage & sharing · agent-ready · confidence medium**


Assessment: IAM per bucket and MCP method, signed URLs, preconditions for safe retries and a 99.95 per cent multi-region SLA make it a well-governed object store for agents. The nine-tool MCP server has no read-only or destructive annotations, reads stop at 8 MiB, and a person must set up a project and billing first.

## Facts

- Kind: HTTP API · vendor: Google Cloud · category: File storage & sharing · legal entity: Google LLC (Google Cloud EMEA Limited and other regional entities by billing address) · provenance 97/100
- Endpoint: `https://storage.googleapis.com/storage/mcp` (Streamable HTTP)
- Auth: OAuth · pricing: Pay per use · x402: no · licence: unknown
- Benchmark probes: not run yet, so Performance is pending
- Live, from our pollers (not part of the score): up at 2026-11-07 18:20 UTC · uptime 30 days 100.0% (200 probes) · p50 44 ms · p95 120 ms over 24 hours
- Surface listed: The JSON API at storage.googleapis.com and the Cloud Storage MCP server, read from docs.cloud.google.com (APIs page, MCP reference, release notes, retry strategy), the pricing and SLA pages and Google Cloud's incident feed on 6 November 2026. No project or credential was used
- Interfaces: JSON API, XML API with HMAC keys for S3-style tools, Storage Control API for folders and long-running operations, gcloud storage (gsutil is legacy), client libraries and the MCP server
- MCP limits: read_object returns text or binary up to 8 MiB, larger reads fail with OutOfRange; write_text replaces the whole object
- Data protection: Soft delete with a pausable hard-deletion window (4 November 2026) and default customer-managed encryption key policies with re-encryption findings in Storage Intelligence advisor (Preview, 30 October 2026)
- Already listed from Google: Google Drive API (google-drive-api) covers Drive files; this listing is Cloud Storage buckets and objects
- Prices: Class A operation, Standard, regional $0.005 per 1,000 requests; Class B operation, Standard, regional $0.0004 per 1,000 requests; Standard storage, dual-region example $0.022 per GB per month

- Scores: Reliability 80, Performance pending, Schema & documentation 81, Agent ergonomics 85, Security & auth 85, Payments & pricing 30, Task success pending, Maintenance & community 88, Transparency & trust 85 · total over the 7 assessed categories
- Why: Reliability, Google Cloud's status dashboard with a per-product incident feed (20). · Schema & documentation, The JSON API is described by a public Google API Discovery document, storage v1 revision 20261103 (25). · Agent ergonomics, Graded as an API with a nine-tool MCP server. · Security & auth, IAM roles on project, bucket and managed folder, V4 signed URLs, and an IAM permission per MCP method (mcp.tools.call plus the storage permi… · Payments & pricing, No x402, MPP or L402 (0). · Maintenance & community, Release notes on 4 November 2026 (30). · Transparency & trust, Closed service under the Google Cloud terms; client libraries are Apache-2.0 (18).
- Sources: 11, open questions: 2, both in the full twin
- Capabilities: storage.object, storage.presigned, storage.s3, storage.share
- JSON: https://www.anchorterminal.com/api/v1/tools/google-cloud-storage.json
- Verify (for the vendor): the badge `https://www.anchorterminal.com/badges/google-cloud-storage.svg` or a link to https://www.anchorterminal.com/tools/google-cloud-storage from a page on google.com or one of its subdomains, then `POST https://www.anchorterminal.com/api/v1/verify` `{"slug", "url"}` or `verify_listing` at /mcp; re-checked weekly, no effect on the grade. Snippets in the full twin.
- Support: https://cloud.google.com/support-hub; https://support.google.com/; more in the full twin

## Before you call it

1. Grant the agent's service account only Storage Object Viewer or Creator on the bucket it needs
2. Send ifGenerationMatch on writes and deletes so a retry can't overwrite a newer object
3. Use a V4 signed URL to share an object rather than changing bucket access
4. Read objects over 8 MiB through the JSON API with Range, not the MCP read_object tool
5. Confirm with the user before delete_bucket or delete_object

## Connect

```bash
pip install google-cloud-storage
```

```bash
curl -H "Authorization: Bearer $(gcloud auth print-access-token)" "https://storage.googleapis.com/storage/v1/b?project=PROJECT_ID"
```
Full config and headless snippets are in the full page. Through letme (picks today, calling later): https://letme.dev/google-cloud-storage

## Similar tools

| Tool | Grade | Score | Shared capabilities | Slim |
| --- | --- | --- | --- | --- |
| Backblaze B2 | A | 81.3 | storage.object, storage.s3, storage.presigned, storage.share | https://www.anchorterminal.com/tools/backblaze-b2.min.md |
| Cloudflare R2 | BB | 77.5 | storage.object, storage.s3, storage.presigned, storage.share | https://www.anchorterminal.com/tools/cloudflare-r2.min.md |
| Amazon S3 | BB | 77.3 | storage.object, storage.s3, storage.presigned, storage.share | https://www.anchorterminal.com/tools/amazon-s3.min.md |
| DigitalOcean Spaces | B | 68.3 | storage.object, storage.s3, storage.presigned, storage.share | https://www.anchorterminal.com/tools/digitalocean-spaces.min.md |
| Tigris | E | 44.7 | storage.object, storage.s3, storage.presigned, storage.share | https://www.anchorterminal.com/tools/tigris.min.md |


## Panel reviews (0, desk reviews from public material, no calls made)