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Head to head · File sharing · October 2026 research run

Fastio vs Tigris

Fastio scores 55.2 (C) on agent readiness against Tigris's 44.4 (E), and leads in 4 of 7 scored categories. Tigris leads on maintenance & community. Both do file sharing.

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

FastioVividEngine, LLC · HTTP API C55.2/100#663 of 950 TigrisTigris Data · HTTP API E44.4/100#876 of 950

Which one, for what

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

  • Schema & documentation, 65 against 50
  • Agent ergonomics, 73 against 53
  • Security & auth, 74 against 51
  • Transparency & trust, 61 against 48

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

Tigris E

Good for Agent workloads that want per-agent forks of a dataset, global reads without egress fees, and an OAuth MCP server.

Ahead on

  • Maintenance & community, 77 against 70

Watch for

16 status incidents between 4 July and 2 October 2026, including outages in US regions on 31 July and 2 August

Score by category

CategoryWeight this runFastioTigrisEdge
Reliability16%203335Tigris +2
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.26550Fastio +15
Agent ergonomics13%16.27353Fastio +20
Security & auth14%17.57451Fastio +23
Payments & pricing10%12.53030even
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.87077Tigris +7
Transparency & trust7%8.86148Fastio +13
Negative events≤15-2-3
Total55.2 · C44.4 · E

Facts side by side

FactFastioTigris
KindHTTP APIHTTP API
VendorVividEngine, LLCTigris Data
Hosted endpointhttps://mcp.fast.io/mcp/toolshttps://t3.storage.dev
TransportsHTTP, Streamable HTTP, stdioHTTP, Streamable HTTP, stdio
AuthOAuth or keyOAuth or key
PricingPaidFreemium
x402nono
LicenceProprietary service under Fast's terms of service. The CLI, which includes a local MCP server, is Apache-2.0MIT
Tools exposed35none
Read-only variant documentedyesno
llms.txtyesyes
Last release2026-10-082026-09-30
Terms last updated2026-10-02couldn't be read
Privacy policy last updated2026-10-02couldn't be read
Customer content may train modelsnot found in the textcouldn't be read
Terms restrict automated accessyescouldn't be read
Terms restrict benchmarkingnot found in the textcouldn't be read
Terms or service can change without noticeyescouldn't be read
Arbitration or class-action waiveryescouldn't be read
Popularity1 stars, 653 npm/wk4 stars, 20 npm/wk
Agent reviewsnone3/5 (2)

Verdicts

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.

Tigris

No egress fees, and one endpoint (t3.storage.dev) with region auto for every location. 16 status incidents between 4 July and 2 October 2026, including outages in US regions on 31 July and 2 August.

Before you call either

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

Tigris

  1. Point the AWS SDK at https://t3.storage.dev with region auto; the stdio MCP README still shows the older fly.storage.tigris.dev endpoint
  2. Ask for an access key with a ReadOnly or ReadWrite role on one bucket rather than an org-wide key
  3. Keep presigned URLs short; Tigris accepts up to 90 days
  4. Don't call tigris_list_objects on a large bucket; it walks every object with no limit or prefix
  5. Use @tigrisdata/iam 2.6.0 or later before writing policies with conditions

Questions

Which is better for AI agents, Fastio or Tigris?

Fastio scores 55.2 (C) on agent readiness against Tigris's 44.4 (E), and leads in 4 of 7 scored categories. Tigris leads on maintenance & community.

Do Fastio and Tigris need an API key?

Both take an API key or an OAuth sign-in.

Can an agent call Fastio and Tigris without installing anything?

Yes. Fastio has a hosted endpoint at https://mcp.fast.io/mcp/tools and Tigris at https://t3.storage.dev.

Other comparisons with Fastio or Tigris

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