Hosted MCP

SAULT runs a hosted MCP endpoint. Agents add a single config block and gain the full toolset.

Server URL

https://mcp.sault.ai/mcp

The server speaks MCP over Streamable HTTP. Tool descriptions and a SKILL.md ship as part of the initialize handshake, so the agent learns the API on connect.

Client setup

Claude Desktop

Add to claude_desktop_config.json:

{
  "mcpServers": {
    "sault": {
      "url": "https://mcp.sault.ai/mcp"
    }
  }
}

Restart Claude Desktop.

Cursor

Add to .cursor/mcp.json:

{
  "mcpServers": {
    "sault": {
      "url": "https://mcp.sault.ai/mcp"
    }
  }
}

Claude Code

claude mcp add sault --url https://mcp.sault.ai/mcp

Windsurf

Add to ~/.codeium/windsurf/mcp_config.json with the same { "url": "..." } form.

Cline

Add via VS Code Settings → Cline → MCP Servers, same { "url": "..." } form.

Pair the agent

After the client connects, call the sault_login tool. It returns an approveUrl and a short verificationCode. Open the URL in your browser, sign in at app.sault.ai, type the verification code the tool returned into the approve page, and approve. The MCP session is now bound to a fresh agent key. Subsequent tool calls work without further auth. If you already have a key from the console, call sault_pair with { "apiKey": "sault_ak_..." } instead.

Tool catalog

Tool	Purpose
`sault_status`	Show pairing + reachability
`sault_login`	Browser pairing flow
`sault_pair`	Save an existing agent key
`sault_request`	Make a request — auto-handles 402
`sault_check`	Probe a URL for 402 without paying
`sault_poll`	Poll an async paid job
`sault_balance`	Vault balances per chain
`sault_spending`	Today’s spend vs. cap
`sault_history`	Recent payments
`sault_whoami`	Agent identity, policy, caps
`sault_discover`	Browse Discover
`sault_skill_prepare`	Check readiness to run a skill
`sault_skill_show`	Print a published skill
`sault_topup`	Get a link to add funds to the vault

Session lifetime

Sessions reconnect automatically — if a session drops, the next tool call re-pairs without any action from you. Funds and history live in the vault; only the session binding is temporary.

Get Started

Quickstart

Concepts

Guides

Server URL

Client setup

Pair the agent

Tool catalog

Session lifetime

​Server URL

​Client setup

​Pair the agent

​Tool catalog

​Session lifetime

Server URL

Client setup

Pair the agent

Tool catalog

Session lifetime