Backblaze B2

Fair

Agent Native Score

Free TierAPI Key AuthOpenAPI Spec

Backblaze B2 is a cloud object storage service that provides S3-compatible APIs for storing and retrieving files at lower cost than major cloud providers. It offers a simple, reliable, and affordable alternative for backup, archival, and general cloud storage needs.

Categories: Storage · Cloud Infrastructure

#5 of 11 in Storage · #1 of 8 in Cloud Infrastructure

Checklist Breakdown

13 of 33 checks passed. 14 unscored.

Discovery 63%

Can an agent find and understand this tool without a web search?

✓ Published OpenAPI/Swagger spec

✗ Has llms.txt or llms-full.txt

✗ Has an MCP server (official or well-maintained)

✗ MCP server listed in a public registry

✓ API reference docs are publicly accessible

✓ Docs include runnable code examples

✓ Has a public changelog or release notes

✓ Has a public status page

Auth & Onboarding 50%

Can an agent create an account and get credentials without human intervention?

✗ Signup does not require CAPTCHA

✗ Signup does not require phone verification

✓ Supports API key auth (not only OAuth)

✗ API key obtainable without manual approval

✓ No mandatory billing info to start

✓ Can sign up without creating an organization

Pricing 100%

Can an agent operate autonomously without upfront payment or contracts?

✓ Has a free tier

✓ Usage-based pricing available

✓ No minimum contract or commitment

✓ Pricing page is public (no 'contact sales')

✓ Free tier sufficient for testing (not just a trial)

Agent Tooling Not yet scored

How well does the API work for non-human consumers?

— SDK available in 2+ languages

— Structured error responses (JSON with error codes)

— Idempotency support on write endpoints

— Pagination on list endpoints

— Webhook/event support

— Sandbox or test mode available

— Rate limit headers in responses

— Consistent REST resource naming

Reliability Not yet scored

Does the tool fail gracefully when an agent makes a mistake?

— Meaningful error messages (not just 500)

— 429 responses include Retry-After header

— Documented uptime SLA (99.9%+)

— Graceful degradation under rate limits

— Request IDs in responses for debugging

— API versioning supported

Reviewer Notes

Backblaze B2 scores well on tooling and pricing with strong API documentation, S3-compatible access, and a generous free tier (10 GB storage). However, account creation requires human email verification and phone-based account setup, blocking fully autonomous signup. The absence of an MCP server and llms.txt slightly limits discoverability, though the OpenAPI spec and comprehensive REST API documentation are solid. Reliability is strong with good uptime history and clear rate limiting. The main weakness is the signup friction; the main strength is the mature, well-documented API and cost-effectiveness.

Backblaze B2

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