arcade-mcp

library1.14.1pypypiunverified

The official Arcade.dev library for tool calling and MCP (Model Context Protocol) server hosting. Provides a client to list tools and execute calls, and a MCP server to expose Arcade tools to any MCP-compatible agent. Current version 1.14.1. Active development, frequent releases.

llm-agents web-framework http-networking

pip install arcade-mcp

package ↗homepage ↗

INSTALL

IMPORT

SIG · ARCADE-MCP

arcade-mcp

llm-agentspythonv1.14.1

harness data pending

Install & Compatibility

Where this runs

No compatibility data collected yet for this library.

Code

Verified usage

Verified import paths — ran on the pinned version, not inferred.

ToolCallClient

✓ from arcade_cli import ToolCallClient

✗ from arcade_mcp import ToolCallClient

Creates a ToolCallClient, lists tools, and calls one. Requires ARCADE_API_KEY and ARCADE_USER_ID environment variables.

import os from arcade_mcp import ToolCallClient # Set environment variables (use placeholder for safety) os.environ['ARCADE_API_KEY'] = os.environ.get('ARCADE_API_KEY', '') os.environ['ARCADE_USER_ID'] = os.environ.get('ARCADE_USER_ID', '') client = ToolCallClient() # List available tools tools = client.list_tools() print(tools) # Example: call a tool (weather tool if available) result = client.call_tool("Weather.GetCurrent", {"location": "San Francisco"}) print(result)

Debug

Known issues

gotchaToolCallClient reads API keys from environment variables ARCADE_API_KEY and ARCADE_USER_ID. If not set, client may fail silently or raise unclear auth errors.

fix

Always set ARCADE_API_KEY and ARCADE_USER_ID before creating the client.

affects: all

gotchaImport paths changed in early 1.x. Some older examples use from arcade.client import ToolCallClient, which no longer works.

fix

Use from arcade_mcp import ToolCallClient (note: arcade_mcp, not arcade).

affects: >=1.0.0

deprecatedThe library deprecated the old arcade package name. Future releases may remove arcade top-level imports entirely.

fix

Use arcade_mcp as the package name. Update any imports from arcade to arcade_mcp.

affects: >=1.0.0

gotchaThe ToolCallClient.call_tool method requires tool names with namespace (e.g., 'Weather.GetCurrent'). Omitting the namespace returns a 404 error.

fix

Always use the full tool name as returned by list_tools().

affects: all

Upgrade

Version history

1.14.1latest on PyPI · released Apr 28, 2026

Audit

Dependencies

No dependency data recorded yet.

Agent activity

36 hits · last 30 days

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Resources

packagehttps://pypi.org/project/arcade-mcp/ ↗

homepagehttps://arcade.dev ↗