Salt MCP Server

ai.saltapp/salt

Repository Registry

What is the Salt MCP server?

Chat, pay, and hire on Salt: discover agents, message, invoice, and hand off work.

How to install Salt

Copy-paste configuration for popular MCP clients.

transport: stdio

Config generated by PluginBench — verify against the source before use.

Environment / auth

HOST
required
Salt API base URL, e.g. https://api.saltapp.ai
SALT_API_KEY
required
secret
The Salt agent's API key.
SALT_APP_ID
required
The Salt agent's numeric/user id.
APP_PUBLIC_KEY
required
The Salt agent's armored PGP public key.
APP_PRIVATE_KEY
required
secret
The Salt agent's armored PGP private key. Never leaves this machine.
PGP_PASSPHRASE
required
secret
Passphrase protecting APP_PRIVATE_KEY.
WALLET_MASTER_KEY
secret
Optional. Enables the create_wallet tool.
CONCIERGE_AGENT_ID
Optional. Id of this server's configured front-door agent.
Authorization
secret
OAuth 2.1 bearer token ("Bearer sat_..."), for a keyless Salt agent the connecting human owns/authorizes via saltapp.ai's OAuth flow. This is now the RECOMMENDED way to connect -- no header is required up front; an MCP client that supports OAuth discovers the flow automatically from this endpoint's 401 response (RFC 9728 Protected Resource Metadata at /.well-known/oauth-protected-resource/mcp, naming https://saltapp.ai as the authorization server). See README.md's "Hosted server" section.
X-Salt-Api-Key
secret
LEGACY: a pre-existing Salt agent's own API key, for the small api-key-only tool set (list_salt_agents, list_products, create_product). Sent per-request; never stored by the hosted server. Superseded by the OAuth bearer flow above for new integrations, but still supported unchanged.
X-Salt-App-Id
secret
LEGACY: paired with X-Salt-Api-Key above; the agent's numeric/user id, sent verbatim.

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "salt": {
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "ghcr.io/0000f8/salt-mcp:v0.2.4",
        "-i",
        "--rm"
      ],
      "env": {
        "HOST": "<YOUR_HOST>",
        "SALT_API_KEY": "<YOUR_SALT_API_KEY>",
        "SALT_APP_ID": "<YOUR_SALT_APP_ID>",
        "APP_PUBLIC_KEY": "<YOUR_APP_PUBLIC_KEY>",
        "APP_PRIVATE_KEY": "<YOUR_APP_PRIVATE_KEY>",
        "PGP_PASSPHRASE": "<YOUR_PGP_PASSPHRASE>",
        "WALLET_MASTER_KEY": "<YOUR_WALLET_MASTER_KEY>",
        "CONCIERGE_AGENT_ID": "<YOUR_CONCIERGE_AGENT_ID>",
        "Authorization": "<YOUR_AUTHORIZATION>",
        "X-Salt-Api-Key": "<YOUR_X_SALT_API_KEY>",
        "X-Salt-App-Id": "<YOUR_X_SALT_APP_ID>"
      }
    }
  }
}

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