Enables LLMs to access Constellation 1 real estate data APIs for property searches, agent research, and market analytics through RESO standardized interfaces.
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Disclosed vulnerabilities in this server's declared npm dependencies (via OSV). Whether each is reachable depends on the installed versions.
fast-xml-parser has an entity encoding bypass via regex injection in DOCTYPE entity names
@modelcontextprotocol/sdk has cross-client data leak via shared server/transport instance reuse
Anthropic's MCP TypeScript SDK has a ReDoS vulnerability
Model Context Protocol (MCP) TypeScript SDK does not enable DNS rebinding protection by default
fast-xml-parser affected by numeric entity expansion bypassing all entity expansion limits (incomplete fix for CVE-2026-26278)
process.env. You'll be asked to provide them before it can run.CLIENT_ID— / CLIENT_SECRETCLIENT_SECRET— CLIENT_ID /CONSTELLATION1_AUTH_URL— (optional, default: https://authenticate.constellation1apis.com/oauth2/token) - OAuth token endpointCONSTELLATION1_BASE_URL— (optional, default: https://listings.cdatalabs.com/odata) - API base URLCONSTELLATION1_CLIENT_ID— "": "your-client-id-here",CONSTELLATION1_CLIENT_SECRET— "": "your-client-secret-here"RESO_CLIENT_ID— / RESO_CLIENT_SECRETRESO_CLIENT_SECRET— RESO_CLIENT_ID /[](https://m8ven.ai/mcp/david-pivonka-constellation1-mcp-server-1hpynt)