# MCPActionButton

> Button that invokes an MCP tool from chat and docs surfaces and reflects its pending, success, and error state.

- Status: beta
- Group: actions
- Page: https://www.digitaltableteur.com/design-system/components/mcp-action-button
- Contract: https://www.digitaltableteur.com/contracts/v1/MCPActionButton.contract.json

## When to use

Action button that triggers an MCP tool invocation (chat and docs surfaces) and reflects pending/success/error state.

## When not to use

The contract records no forbidden uses.

## Look-alikes

The contract names no look-alike with a deciding condition.

## Props

| Prop | Type | Default | Description | Required |
| --- | --- | --- | --- | --- |
| `toolId` | `string` | none | Identifier for the MCP tool to invoke. | Yes |
| `payload` | `Record<string, unknown>` | none | Optional payload for the MCP call. | No |
| `onExecute` | `(input: { toolId: string; payload?: Record<string, unknown>; }) => Promise<unknown>` | none | Async executor for the MCP action. | No |
| `onResult` | `(result: unknown) => void` | none | Callback for successful results. | No |
| `onError` | `(error: unknown) => void` | none | Callback for errors. | No |
| `children` | `React.ReactNode` | none | Button label override. | No |

## Variants

No variant dimensions and no props with a fixed set of values.

## Invalid combinations

The contract records no invalid combinations.

## Keyboard

The contract records no keyboard interaction.

## Rules

Every item under When not to use is a MUST NOT. MUST and SHOULD follow RFC 2119.

| Level | Rule | How it is checked |
| --- | --- | --- |
| MUST | Required stories produce no axe violations at the configured severity. | Automated by `npm run test:stories:matrix:ci`. WCAG 2.5.8. |
| MUST | The accessibility tree (role, name, state) matches the committed snapshot for every required story. | Automated by `npm run test:stories:matrix:ci`. WCAG 1.3.1, 4.1.2. |
| MUST | The component remains legible and operable under a real browser forced-colors: active pass. | Automated by `npm run test:stories:hc`. |
| MUST | A human completed an end-to-end accessibility review of this component. | Manual review, last on 2026-05-28. |
| MUST NOT | Maintainers: Do not bypass design tokens or skip forced-colors verification at beta. | Release review; not machine-checked. |

## Install and import

- In-repo only. MCPActionButton is not exported from `@digitaltableteur/react`, so there is no public import path.

## Links

- Machine-readable contract (Design System Contract 1.0): https://www.digitaltableteur.com/contracts/v1/MCPActionButton.contract.json
- Markdown version of this page: https://www.digitaltableteur.com/design-system/components/mcp-action-button.md
- Component index as JSON: https://www.digitaltableteur.com/design-system/components.json
- All components: https://www.digitaltableteur.com/design-system/components
- Source: The implementation lives in a private repository. This page, its Markdown twin and the contract are generated from it at build time and are the public source of truth.