CRS Credit API — MCP Server

An MCP (Model Context Protocol) server that gives AI assistants access to the CRS Credit API sandbox. Provides schemas, test data, OpenAPI docs, and debugging tools for developers.

Setup

A)

1. Create .mcp.json in a directory you will run Claude Code in

   If using Claude Desktop, go to Settings->Developer->Edit Config

2. Set environment variables (either in .mcp.json or the config file for Claude Desktop):

{
	"mcpServers": {
		"crs-mcp-server": {
			"command": "npx",
			"args": ["@crscreditapi/mcp-server"],
			"env": {
				"CRS_USERNAME": "USERNAME",
				"CRS_PASSWORD": "PASSWORD"
			}
		}
	}
}

B)

Run claude mcp add crs-mcp-server -e CRS_USERNAME=USERNAME -e CRS_PASSWORD=PASSWORD -- npx "@crscreditapi/mcp-server"

Refer to Postman collection or CRS officials if there is anything unclear regarding installation or MCP usage.

Good luck, hackers!

Example Prompts

Below are example messages you can use with an AI assistant that has this MCP server connected. Each tool is covered with at least two examples.

Authentication (get_auth_info)

• "How do I authenticate with the CRS API?"
• "What credentials do I need to get started with the sandbox?"

API Schemas (get_api_schema)

• "Show me the request schema for pulling an Experian prequal credit report."
• "What fields are required to run a criminal background check?"
• "Give me the endpoint and payload format for TransUnion prequal."
• "What does the FlexID request body look like?"

Test Data (get_test_data)

• "Give me a test persona I can use to pull an Equifax credit report."
• "What sample request can I send to the eviction endpoint?"
• "Show me test data for the fraud-finder product."

OpenAPI Spec (get_openapi_spec)

• "Show me the full OpenAPI spec for all Experian endpoints."
• "What endpoints are available for criminal screening?"
• "List all available API paths."

Use Cases (get_use_cases)

• "What kind of projects can I build with the CRS API?"
• "Give me hackathon project ideas that use credit data."

Debugging (debug_request)

• "Look up request ID abc-123-def for my Experian prequal call — what did the vendor return?"
• "Debug my criminal background check request some-uuid-here, I got an unexpected response."