"address validation" matching MCP connectors:

Discovery registry for AI agents: 660+ APIs, MCP servers and CLIs, each health-checked every 6 hours with real requests — full initialize + tools/list handshakes for MCP, real calls for APIs — plus response-schema validation that catches responses which parse fine but are missing a required field.

Sanctions API docs and request validation, with account-linked synthetic sandbox testing.

Regex matching, email/URL format validation, and JSON Schema validation.

Deterministic validation for AI-generated artifacts: JSON Schema, OpenAPI response, SQL syntax.

dilli-email-validation-api-serverB

com.dillilabs.deva

An MCP server that provides tools to validate an email address using Dilli Email Validation API.

JSON Schema validation MCP.

Search millions of x402 APIs for data, finance, validation, security, inventory, sync and automation

Deterministic JSON Schema validation with exact violations and conservative type normalization.