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Head to head · File sharing · October 2026 research run

DigitalOcean Spaces vs Fastio

DigitalOcean Spaces scores 63.2 (B) on agent readiness against Fastio's 55.2 (C), and leads in 3 of 7 scored categories. Fastio leads on payments & pricing and maintenance & community. Both do file sharing.

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

DigitalOcean SpacesDigitalOcean, LLC · HTTP API B63.2/100#402 of 950 FastioVividEngine, LLC · HTTP API C55.2/100#663 of 950

Which one, for what

DigitalOcean Spaces B

Good for Teams already on DigitalOcean that want object storage with a CDN and a flat $5 entry price for up to 250 GiB, with free transfer to Droplets in the same region.

Ahead on

  • Reliability, 77 against 33
  • Transparency & trust, 74 against 61

Watch for

The Spaces MCP server has ten tools for access keys and CDN endpoints. None reads, writes, lists or shares an object

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 20
  • Maintenance & community, 70 against 37

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 runDigitalOcean SpacesFastioEdge
Reliability16%207733DigitalOcean Spaces +44
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.26365Fastio +2
Agent ergonomics13%16.27373even
Security & auth14%17.57774DigitalOcean Spaces +3
Payments & pricing10%12.52030Fastio +10
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.83770Fastio +33
Transparency & trust7%8.87461DigitalOcean Spaces +13
Negative events≤150-2
Total63.2 · B55.2 · C

Facts side by side

FactDigitalOcean SpacesFastio
KindHTTP APIHTTP API
VendorDigitalOcean, LLCVividEngine, LLC
Hosted endpointhttps://nyc3.digitaloceanspaces.comhttps://mcp.fast.io/mcp/tools
TransportsHTTP, Streamable HTTPHTTP, Streamable HTTP, stdio
AuthAPI keyOAuth or key
PricingPay per usePaid
x402nono
LicenceProprietary service under the DigitalOcean Terms of Service Agreement. The MCP server is MITProprietary service under Fast's terms of service. The CLI, which includes a local MCP server, is Apache-2.0
Tools exposednone35
Read-only variant documentedyesyes
llms.txtyesyes
Last release2026-04-082026-10-08
Terms last updated2026-08-222026-10-02
Privacy policy last updated2025-01-012026-10-02
Customer content may train modelsnot found in the textnot found in the text
Terms restrict automated accessnot found in the textyes
Terms restrict benchmarkingnot found in the textnot found in the text
Terms or service can change without noticenot found in the textyes
Arbitration or class-action waiveryesyes
Popularitynone1 stars, 653 npm/wk

Verdicts

DigitalOcean Spaces

Per-bucket access keys with read or read-write-delete grants, an 800 operations a second limit per bucket and a 99.9 per cent SLA are all published. The MCP server manages keys and CDN endpoints only, not objects, and the S3 reference documents no error codes. A payment method is required before any bucket is created.

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

DigitalOcean Spaces

  1. Set the endpoint to https://<region>.digitaloceanspaces.com and, in AWS SDKs other than Python's, set region to us-east-1 when creating a bucket
  2. Ask for a limited access key with a Read or Read/Write/Delete grant on one bucket. A full access key can create, configure and delete every bucket
  3. Do the object work through the S3 API. The MCP server and doctl cannot upload, list, move or delete files
  4. Retry with exponential backoff on 503 Slow Down, and keep below 800 operations a second per bucket
  5. Fetch presigned links from the origin host, not the CDN. The docs say presigned requests through the CDN are not cached and can double the bandwidth charge
  6. Avoid many tiny objects. Each bills as at least 4 KiB on Standard and 128 KiB on Cold Storage, which also has a 30-day minimum

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, DigitalOcean Spaces or Fastio?

DigitalOcean Spaces scores 63.2 (B) on agent readiness against Fastio's 55.2 (C), and leads in 3 of 7 scored categories. Fastio leads on payments & pricing and maintenance & community.

Do DigitalOcean Spaces and Fastio need an API key?

DigitalOcean Spaces needs an API key. Fastio takes an API key or an OAuth sign-in.

Can an agent call DigitalOcean Spaces and Fastio without installing anything?

Yes. DigitalOcean Spaces has a hosted endpoint at https://nyc3.digitaloceanspaces.com and Fastio at https://mcp.fast.io/mcp/tools.

Other comparisons with DigitalOcean Spaces or Fastio

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