ToolProvider

The ToolProvider interface defines how the editor discovers and resolves integration tools from external platforms. Mastra ships with two built-in implementations: ComposioToolProvider and ArcadeToolProvider.

See Tools for a guide on setting up tool providers.

ToolProvider interface

Tool providers implement these methods:

listToolkits():

() => Promise<Toolkit[]>

Returns a list of available toolkits (tool categories) from the provider.

listTools(params?):

(params?) => Promise<Tool[]>

Returns a list of available tools. Accepts optional filtering by toolkit, search query, and limit.

getToolSchema(slug):

(slug: string) => Promise<JSONSchema>

Returns the JSON schema for a specific tool identified by its slug.

resolveTools(slugs, options?):

(slugs: string[], options?) => Promise<Record<string, ToolAction>>

Resolves tool slugs into executable Mastra tool actions. Built-in providers use resourceId from request context for per-user authentication.

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ComposioToolProvider

Connects to Composio for access to hundreds of integration tools.

Usage example

src/mastra/index.ts

import { MastraEditor } from '@mastra/editor'
import { ComposioToolProvider } from '@mastra/editor/providers/composio'

const editor = new MastraEditor({
  toolProviders: {
    composio: new ComposioToolProvider({
      apiKey: process.env.COMPOSIO_API_KEY!,
    }),
  },
})

Constructor parameters

apiKey:

string

Your Composio API key.

Tool slugs

Composio tools use uppercase slug format: GITHUB_CREATE_ISSUE, SLACK_SEND_MESSAGE.

Authentication

Tool execution is scoped to the resourceId passed through request context. The provider maps that value to the user identity required by Composio's auth flow.

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ArcadeToolProvider

Connects to Arcade for a curated tool catalog with built-in authentication.

Usage example

src/mastra/index.ts

import { MastraEditor } from '@mastra/editor'
import { ArcadeToolProvider } from '@mastra/editor/providers/arcade'

const editor = new MastraEditor({
  toolProviders: {
    arcade: new ArcadeToolProvider({
      apiKey: process.env.ARCADE_API_KEY!,
    }),
  },
})

Constructor parameters

apiKey:

string

Your Arcade API key.

baseURL?:

string

Custom base URL for the Arcade API.

Tool slugs

Arcade tools use Toolkit.ToolName format: Github.GetRepository, Slack.SendMessage.

Authentication

Like Composio, tool execution uses resourceId from request context for per-user authorization. The provider maps that value to the user identity required by Arcade's auth flow.