# STI-SP

STI-SP is a free portal for STIR/SHAKEN signing and verification.

Primary pages:
- Landing page: https://www.sti-sp.com/
- API documentation: https://www.sti-sp.com/api-doc/
- MCP info: https://www.sti-sp.com/mcp.json
- MCP discovery: https://www.sti-sp.com/.well-known/mcp.json

Agent guidance:
- Register or log in to manage approved source IPs.
- Upload owned STIR/SHAKEN certificates and private keys for signing.
- Configure ANI attestation defaults, exact numbers, and prefixes.
- Configure blocking rules or let the STI-SP algorithm decide.
- Use the OpenAPI documentation for signing and verification API details.