fake-gcs-server

fake-gcs-server provides a local/emulated Google Cloud Storage (GCS) compatible server for development and testing, typically exposing an HTTP API that mimics GCS behavior (e.g., buckets/objects) without using the real cloud.

Evaluated Apr 04, 2026 (23d ago)
Homepage ↗ Repo ↗ Infrastructure storage gcs-compatible emulator testing devtools local-development object-storage
⚙ Agent Friendliness
41
/ 100
Can an agent use this?
🔒 Security
33
/ 100
Is it safe for agents?
⚡ Reliability
22
/ 100
Does it work consistently?

Score Breakdown

⚙ Agent Friendliness

MCP Quality
0
Documentation
30
Error Messages
0
Auth Simplicity
90
Rate Limits
20

🔒 Security

TLS Enforcement
40
Auth Strength
10
Scope Granularity
0
Dep. Hygiene
55
Secret Handling
70

As a dev emulator, it often runs without strong auth and may allow unauthenticated access; ensure it is bound to localhost or otherwise network-restricted. TLS/auth posture depends on how you deploy/configure the server. Treat it as non-production and avoid exposing it to untrusted networks.

⚡ Reliability

Uptime/SLA
0
Version Stability
40
Breaking Changes
30
Error Recovery
20
AF Security Reliability

Best When

You need a lightweight, controllable GCS-like endpoint for local/CI tests and development workflows.

Avoid When

You need exact behavioral parity with GCS or cloud-grade operational assurances.

Use Cases

  • Integration testing code that uses the GCS API without accessing Google Cloud
  • Local development for data pipelines or storage-dependent applications
  • CI tests for upload/download workflows
  • Testing error handling and edge cases against a controllable storage emulator

Not For

  • Production workloads requiring Google Cloud Storage guarantees/durability/security controls
  • Environments needing strict GCS parity for every feature/edge case
  • Performance benchmarking against real GCS

Interface

REST API
Yes
GraphQL
No
gRPC
No
MCP Server
No
SDK
No
Webhooks
No

Authentication

Methods: No auth or permissive access typical of local emulators (exact behavior depends on configuration)
OAuth: No Scopes: No

As a local emulator, auth is generally not the focus; configuration may determine whether unauthenticated requests are accepted. No first-class OAuth/scopes interface is indicated from the provided prompt.

Pricing

Free tier: No
Requires CC: No

Runs locally; no documented pricing in the provided information.

Agent Metadata

Pagination
unknown
Idempotent
False
Retry Guidance
Not documented

Known Gotchas

  • Behavior may not exactly match real GCS for all APIs/edge cases; verify against your specific client library/version.
  • Local emulator semantics (e.g., headers, auth expectations, error codes) may differ from production—test end-to-end with the same SDK your app uses.

Alternatives

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Scores are editorial opinions as of 2026-04-04.

8642
Packages Evaluated
17761
Need Evaluation
586
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