fastio-mcp
Description
Cloud storage and content workspace built for AI agents. Gives agents their own workspaces to create, organize, search, and share files alongside your team. - **Files & folders** — full CRUD, versions, locks, previews for 10+ formats, chunked uploads up to 1GB - **Semantic search** — find files by meaning, not just keywords - **AI chat (RAG)** — ask questions across a whole workspace with citations - **Sharing & portals** — send, receive, or exchange files with password protection and expiration - **Webhooks** — real-time notifications for file events - **Ownership transfer** — agents can build a workspace, then hand it off to a human who keeps the agent's admin access Docs: https://api.fast.io/llms.txt · Setup: https://mcp.fast.io/skill.md
What our measurements say
fastio-mcp is a remote MCP server published at mcp.fast.io. It has been probed 7 times since 9/10/2026. It answered in 7 of them (100.0%), a near-uninterrupted record. Median response time is 817 ms, a delay an agent will notice. It exposes a broad tool surface of 19 tools. On the protocol side it still runs 2025-11-25 and has not moved to the newer spec.
Agent readability score
Can an LLM agent pick the right tool here — names, descriptions and parameter clarity are assessed.
Agent readability score
Strengths
- Some tools (e.g., 'auth', 'org') have clear, intent-aligned names and explicitly note destructive actions.
- Metadata and search tools (e.g., 'storage', 'find') provide detailed functional scope in descriptions.
Weaknesses
- Descriptions often prioritize technical implementation over use-case guidance (e.g., 'intent' lacks clear triggers for agent use).
- Overlapping tools like 'share' and 'fileshare' create ambiguity in task delegation.
- Parameter definitions are inconsistently detailed (e.g., 'intent' lacks explicit schema references).
intent— Description is overly technical, lacks clear use-case triggers for agent invocationshare— Functionally overlaps with 'fileshare' despite distinct 'durable single-file' focusmetadata— Vague parameter references (e.g., 'fields-list' without schema details)how-to— Implied 'explain-only' behavior not clearly differentiated from actionable toolsdownload— Mentions 'zip-url' but lacks explicit file-size or format constraints
Verdict
Event narrative
Risk: medium
- 2026-09-10T21:16:35.016Z — era changed from 'auth-gated' to 'legacy' · system moved to legacy mode, enabling compliance scoring
- 2026-09-11T03:50:39.090Z — complianceScore changed from null to 100 · full compliance achieved after legacy mode activation
Advice
Schema compliance
tools/list structure, inputSchema validity, and a functional smoke test — the components of the 0-100 score.
- tools/list schema valid
- inputSchema is valid JSON Schema
- Smoke test not run this round
- Cold-start: cold 931ms → warm 962ms (penalty 0ms)
Availability history
Event log
Derived by comparing consecutive probes — changes in era, protocol version, build and reachability.
- Server build: — → 2026.09.34
- Supported versions: — → 2025-11-25
- Era changed: Auth-gated → Legacy
- Added to watch — era: Auth-gated
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