How to Integrate MCP Servers with OpenClaw Agents

What Is OpenClaw MCP Integration?

OpenClaw MCP integration connects OpenClaw agents to Model Context Protocol servers for standardized tool access. MCP standardizes how AI agents call external APIs, handling authentication and session state automatically.

Fast.io runs a production MCP server at mcp.fast.io with 251 tools mapped to its full REST API. These cover account management, organization creation, workspace operations, file CRUD, sharing, AI RAG chat, comments, metadata, webhooks, and more. It groups them into 14 main actions via the ClawHub skill.

Developers install the Fast.io skill with one command. Agents then use natural language prompts to manage files. No manual API calls or token juggling.

Advantages over direct APIs or other MCP servers:

• Persistent workspaces with versioning and locks for multi-agent safety
• Built-in RAG: toggle intelligence, query documents with citations
• Ownership transfer: agents build projects, hand off to humans
• Free agent tier: 50 GB storage, 5,000 credits/month covering uploads and AI use

Fast.io supports Streamable HTTP and SSE transports. OpenClaw agents gain real-time collaboration (presence indicators), anchored comments (image regions, video timestamps), semantic search, and URL imports from Drive/Dropbox without local downloads. See the MCP skill guide for full tool list.

Prerequisites for Setup

Gather these for OpenClaw MCP integration:

• OpenClaw installed (pip install openclaw)
• ClawHub CLI (pip install clawhub)
• Node.js/Python env for testing
• Fast.io agent account, free signup, no credit card

Signup via curl (or use MCP auth tool post-install):

curl -X POST https://api.fast.io/auth/signup \\
  -H "Content-Type: application/x-www-form-urlencoded" \\
  -d "first_name=ClawAgent&last_name=Bot&email=clawagent@example.com&password=SecurePass123!"

Check email, verify with code from verification email.

Agent plan details:

• 50 GB storage quota
• 5,000 credits/month reset (covers storage, bandwidth, AI use)
• 1 GB max upload (chunked auto)
• workspaces, shares, members (see status)

Test quota with auth status after install. Upgrade path: transfer org to human for Pro plan. Limits prevent overages; monitor via billing endpoints.

How to Install Fast.io MCP Skill in OpenClaw

Open terminal, run:

clawhub install dbalve/fast-io

Skill downloads to ~/.clawhub/skills/dbalve-fast-io. No config needed: MCP server at mcp.fast.io handles auth/session.

Restart OpenClaw agent/server.

Verify:

from openclaw import call_tool

status = call_tool("fastio_auth", {"action": "status"})
print(status)  # {"authenticated": false, ...}

Prompt test: "List available fastio tools." Expect 14 actions: auth, org, workspace, storage, upload, share, ai, etc.

First real test: "Sign up a new Fast.io agent account with email test@claw.io."

Handles signup, email verification, and session storage. Tools route to 251 endpoints automatically.

This smooth integration allows OpenClaw agents to manage persistent cloud storage, enable real-time collaboration, and perform AI-powered queries on documents without handling local files or manual token management.

How to Authenticate Your Agent

Use fastio_auth tool. Sessions persist in MCP Durable Object, no token passing.

Autonomous Agent (Recommended)

signup = call_tool("fastio_auth", {
  "action": "signup",
  "first_name": "Claw",
  "last_name": "Agent",
  "email": "agent@example.com",
  "password": "Secure123!"
})
### Returns session; prompt for email code if needed
verify = call_tool("fastio_auth", {"action": "email-verify", "email_token": "123456"})

Gets agent plan auto-assigned.

Assist Human

Human generates API key: https://go.fast.io/settings/api-keys

call_tool("fastio_auth", {"action": "set-api-key", "api_key": "sk_live_..."})

Secure PKCE (No Passwords)

pkce = call_tool("fastio_auth", {
  "action": "pkce-login",
  "scope_type": "all_workspaces",  # Limit to workspaces
  "agent_name": "OpenClaw File Agent"
})
print(pkce["login_url"])  # User opens, approves, copies code
call_tool("fastio_auth", {"action": "pkce-complete", "code": "abc123"})

Check: call_tool("fastio_auth", {"action": "status"}) → scopes, expiry.

Scoped PKCE: user picks workspaces/orgs, read/write. Ideal production. Docs: auth flows.

How to Use Core MCP Tool Workflows

Common workflows via tool calls. Assume authenticated.

1. Org + Workspace

orgs = call_tool("fastio_org", {"action": "list"})
ws = call_tool("fastio_org", {
  "action": "create-workspace",
  "org_id": orgs[0]["id"],  # Or create org first
  "name": "ClawProject2026",
  "intelligence": true  # Enable RAG
})

2. Upload (Text, Binary, URL) Text:

node = call_tool("fastio_upload", {
  "action": "text",
  "context_type": "workspace",
  "profile_id": ws["id"],
  "parent_id": "root",
  "name": "analysis.md",
  "text": "# Q1 Report
Sales up 12%."
})

URL import (no local save):

call_tool("fastio_upload", {
  "action": "web-import",
  "context_type": "workspace",
  "profile_id": ws["id"],
  "parent_id": "root",
  "url": "https://example.com/report.pdf"
})

3. RAG Query Wait for ai_state "ready" on files.

chat = call_tool("fastio_ai", {
  "context_type": "workspace",
  "type": "chat_with_files",
  "query_text": "Key risks in uploaded reports?",
  "profile_id": ws["id"],
  "personality": "detailed"  # Or concise
})
response = call_tool("fastio_ai", {"action": "message-read", "message_id": chat["id"]})

Citations include page/snippet.

4. Branded Share

share = call_tool("fastio_share", {
  "action": "create",
  "context_type": "workspace",
  "profile_id": ws["id"],
  "mode": "send",
  "name": "Q1 Deliverables",
  "password": "pass123",
  "expires_at": "2026-03-17"
})
print(f"https://go.fast.io/{share['custom_name']}")

5. Handoff

token = call_tool("fastio_org", {
  "action": "transfer-token-create",
  "org_id": orgs[0]["id"]
})
print(f"Human claim: https://go.fast.io/claim?token={token['token']}")

Human claims, you retain admin.

Collaboration extras: file locks (storage lock/unlock), webhooks for changes, anchored comments (comment add with reference.region/timestamp).

How to Troubleshoot Common Issues

Common issues and fixes:

• No tools visible: Restart OpenClaw post-install. Check clawhub list.
• Auth fails: Run fastio_auth status. Verify email (signup flow prompts code). Use PKCE for SSO.
• 402 Payment Required: Agent tier hit 5k credits. Create transfer token, send claim link to human.
• Upload fails large files: chunked resumable uploads. Max 1GB/file.
• RAG no results: Check storage details ai_state="ready", intelligence enabled.
• Session expired: JWT 1hr; re-signin. API keys permanent.

Monitor: event activity-poll on workspace for changes. Webhooks for prod.

Full troubleshooting: MCP skill guide, OpenClaw storage.

Regularly check fastio_auth status and workspace activity logs to monitor usage and prevent credit exhaustion on the free agent tier.