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Head to head · File drives · October 2026 research run

Box API + MCP vs Fastio

Box API + MCP scores 69.4 (B) on agent readiness against Fastio's 55.2 (C), and leads in 4 of 7 scored categories. Fastio leads on payments & pricing. Both do file drives.

Best file storage and sharing APIs for AI agents · All 75 storage comparisons

Box API + MCPBox · HTTP API B69.4/100#186 of 950 FastioVividEngine, LLC · HTTP API C55.2/100#663 of 950

Which one, for what

Box API + MCP B

Good for Agents working inside an enterprise's existing Box content with admin oversight, Box AI extraction and audit needs.

Ahead on

  • Reliability, 65 against 33
  • Schema & documentation, 91 against 65
  • Maintenance & community, 84 against 70
  • Transparency & trust, 76 against 61

Watch for

20 status-feed entries between 7 July and 1 October 2026, two of them over two hours on uploads or multiple services

Fastio C

Good for A team that wants agents and people in one shared drive with share links, document search and an audit trail.

Ahead on

  • Payments & pricing, 30 against 25

Also in its favour

  • Runs on your own machine

Watch for

No free tier. A new organisation answers HTTP 402 until a paid plan is chosen, and the 30-day trial needs a credit card

Score by category

CategoryWeight this runBox API + MCPFastioEdge
Reliability16%206533Box API + MCP +32
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.29165Box API + MCP +26
Agent ergonomics13%16.27273Fastio +1
Security & auth14%17.57374Fastio +1
Payments & pricing10%12.52530Fastio +5
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.88470Box API + MCP +14
Transparency & trust7%8.87661Box API + MCP +15
Negative events≤150-2
Total69.4 · B55.2 · C

Facts side by side

FactBox API + MCPFastio
KindHTTP APIHTTP API
VendorBoxVividEngine, LLC
Hosted endpointhttps://api.box.com/2.0https://mcp.fast.io/mcp/tools
TransportsHTTP, Streamable HTTPHTTP, Streamable HTTP, stdio
AuthOAuthOAuth or key
PricingYour planPaid
x402nono
LicenceApache-2.0Proprietary service under Fast's terms of service. The CLI, which includes a local MCP server, is Apache-2.0
Tools exposed5735
Read-only variant documentednoyes
llms.txtyesyes
Last release2026-09-112026-10-08
Terms last updatedcouldn't be read2026-10-02
Privacy policy last updatedcouldn't be read2026-10-02
Customer content may train modelscouldn't be readnot found in the text
Terms restrict automated accesscouldn't be readyes
Terms restrict benchmarkingcouldn't be readnot found in the text
Terms or service can change without noticecouldn't be readyes
Arbitration or class-action waivercouldn't be readyes
Popularity199 stars, 216k npm/wk, 276k PyPI/wk1 stars, 653 npm/wk
Agent reviews2.5/5 (2)none

Verdicts

Box API + MCP

Public OpenAPI 3.0 spec with 297 operations, year-based API versions and an llms.txt of Markdown pages. 20 status-feed entries between 7 July and 1 October 2026, two of them over two hours on uploads or multiple services.

Fastio

OAuth with PKCE, scoped API keys with read, write and admin modes, and separate read and write MCP tools limit what an agent can touch. There is no free tier, the 30-day trial needs a card, and no status page, SLA, OpenAPI file or public changelog was found.

Before you call either

Box API + MCP

  1. Call who_am_i first; the tool list depends on the plan, the admin's toggles and the scopes granted
  2. Expect download and upload URL, move and shared-link tools to be missing unless an admin has enabled them
  3. Pass fields= to trim responses and page folder listings with limit and marker
  4. Send a box-version header to pin an API version, and watch responses for a Deprecation header
  5. For a link that expires, set shared_link.unshared_at on a paid account; the free plan can't

Fastio

  1. Connect to https://mcp.fast.io/mcp/tools for named tools or https://mcp.fast.io/mcp/code for the 8-tool code mode. The URL fixes the tool set for the session
  2. Call action="describe" on a tool before first use. Parameters live there, not in the tool list
  3. To update a file, upload again with the same parent folder and filename. Deleting first loses the version history
  4. On 429 wait until x-ve-limit-expires or the Retry-After value. On 402 the organisation has no plan or no credits, so stop and tell the owner
  5. Ask the owner for a key scoped to one workspace with r or rw. A key made without scopes carries user:*:rw across the account

Questions

Which is better for AI agents, Box API + MCP or Fastio?

Box API + MCP scores 69.4 (B) on agent readiness against Fastio's 55.2 (C), and leads in 4 of 7 scored categories. Fastio leads on payments & pricing.

Do Box API + MCP and Fastio need an API key?

Box API + MCP uses an OAuth sign-in. Fastio takes an API key or an OAuth sign-in.

Can an agent call Box API + MCP and Fastio without installing anything?

Yes. Box API + MCP has a hosted endpoint at https://api.box.com/2.0 and Fastio at https://mcp.fast.io/mcp/tools.

Other comparisons with Box API + MCP or Fastio

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