How to Use the MCPFusion Developer Prover MCP in Claude Code

Enforce strict MVA architecture in your CLI pipelines. Validate your code layouts directly from the terminal with this MCP Server.

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Connect MCPFusion Developer Prover MCP to Claude Code

Create your Vinkius account to connect MCPFusion Developer Prover to Claude Code and route execution through our secure gateway. The platform manages server hosting, runtime updates, and security layers. Configuration requires no manual server provisioning.

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Setup MCPFusion Developer Prover with Claude Code

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Terminal-driven schema validation for pipelines

The `validate_mcpfusion_implementation` tool inspects your codebase from the command line to prevent non-compliant code from entering your repository. Claude Code operates entirely in the terminal, where it can easily miss complex structural rules during fast file generation. This tool parses your TypeScript files to verify that all entity declarations use `defineModel()` rather than raw Zod objects on your MCP Server. Running this validation in your CLI client ensures that features like hidden fields and auto-timestamps are never omitted. The agent analyzes the structural output, updates the code in place, and keeps your codebase clean.

Prevent raw data leaks in headless environments

The `validate_mcpfusion_implementation` tool blocks Claude Code from writing terminal tools that bypass egress filters. Headless agents frequently output raw database structures, exposing internal IDs and password hashes. This tool checks every endpoint to ensure it returns a designated presenter. The CLI agent reads the validation failures and applies `definePresenter()` to the tool's return path. This forces the system to strip sensitive properties and formats the output for safe rendering in terminal environments.

Enforce correct transaction verbs via CLI

The `validate_mcpfusion_implementation` tool evaluates the semantic verbs in your CLI tool declarations to prevent execution errors. If Claude Code assigns a destructive action to a query verb, it can trigger accidental data loss during automated runs. The tool forces the agent to map reads to `f.query()` and writes to `f.mutation()`. This ensures that your automation scripts cache safe operations and halt execution for verification on destructive changes.

Setup guide

Set up MCPFusion Developer Prover MCP in Claude Code

Prerequisites

Claude Code CLI installed (npm install -g @anthropic-ai/claude-code)
Active Vinkius subscription with a valid endpoint token

1

Run the add command

Open your terminal and run the command shown on the right. Replace [YOUR_TOKEN_HERE] with your endpoint token from cloud.vinkius.com. Use --scope user to make it available across all projects.
2

Verify the connection

Start a Claude Code session and type /mcp to list connected servers. You should see mcpfusion-developer-prover-mcp with a green status indicator.
3

Start using tools

Ask Claude Code something like "Check my latest MCPFusion Developer Prover transactions." It will automatically discover and invoke the available MCPFusion Developer Prover tools.

Terminal

claude mcp add --transport http mcpfusion-developer-prover-mcp https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp

Get your connection token →

Prerequisites

Claude Code CLI installed
Active Vinkius subscription with a valid endpoint token

1

Open the config file

Create or edit .mcp.json in your project root for project-level scope, or ~/.claude.json for user-level scope.
2

Add the MCPFusion Developer Prover MCP

Paste the JSON snippet shown on the right into the mcpServers object. Replace [YOUR_TOKEN_HERE] with your endpoint token from cloud.vinkius.com.
3

Restart Claude Code

Start a new Claude Code session. Type /mcp to confirm the server is connected. The tools will be automatically available in your conversation.

.mcp.json

{
  "mcpServers": {
    "mcpfusion-developer-prover-mcp": {
      "type": "url",
      "url": "https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"
    }
  }
}

Get your connection token →

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Common questions about MCPFusion Developer Prover MCP in Claude Code

Connect the MCP server using the CLI transport command. Claude Code will automatically discover the validation tool and invoke it when reviewing your codebase.

Yes, the validation tool outputs structured results that your CLI client can check before staging changes. This prevents non-compliant schemas from reaching your main branch.

The server requires specific semantic verbs to optimize caching and safety. It flags generic action verbs to force the agent to use explicit queries or mutations.

None at all. Vinkius manages the hosting, sandboxing, and transport protocols, giving you a simple command to connect the MCP Server instantly.

Security is maintained by running all AST parsing and model checking within an isolated V8 sandbox. Vinkius uses a zero-trust architecture, ensuring your code structure is never stored or exposed to external networks.

Use it with your favorite AI tools

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