{"openapi":"3.0.3","info":{"title":"Gnist Context — Email Validation","description":"Email address validation — format checking, MX record verification, disposable and role address detection.\n\n- **MCP endpoint:** `https://context.gnist.ai/mcp/email-validation/`\n- **Toolkit page:** `/toolkits/email-validation`\n- **Full API spec:** `/api/openapi.json`\n- **Get an API key:** `/signup`","version":"1.0.0","contact":{"name":"GnistAI","url":"https://gnist.ai"}},"servers":[{"url":"https://context.gnist.ai","description":"Production"}],"paths":{"/rest/email-validation/validate_email":{"post":{"tags":["Utilities"],"summary":"validate_email","description":"Validate an email address — checks format, MX records, disposable/role detection.\n\nReturns whether the format is valid, if the domain has MX records (can receive mail),\nwhether it's a known disposable email provider, and whether it's a role address\n(e.g. admin@, support@).\n\nArgs:\n    email: Email address to validate (e.g. \"user@example.com\").","operationId":"email_validation_validate_email","responses":{"200":{"description":"Successful tool call","content":{"application/json":{"schema":{"type":"object"}}}},"404":{"description":"Server or tool not found"},"500":{"description":"Tool execution error"}},"security":[{"ApiKeyHeader":[]},{"ApiKeyQuery":[]}],"requestBody":{"required":true,"content":{"application/json":{"schema":{"additionalProperties":false,"properties":{"email":{"type":"string"}},"required":["email"],"type":"object"}}}}}},"/rest/email-validation/validate_email_batch":{"post":{"tags":["Utilities"],"summary":"validate_email_batch","description":"Validate multiple email addresses at once (max 50).\n\nArgs:\n    emails: Comma-separated email addresses (e.g. \"a@example.com,b@test.org\").","operationId":"email_validation_validate_email_batch","responses":{"200":{"description":"Successful tool call","content":{"application/json":{"schema":{"type":"object"}}}},"404":{"description":"Server or tool not found"},"500":{"description":"Tool execution error"}},"security":[{"ApiKeyHeader":[]},{"ApiKeyQuery":[]}],"requestBody":{"required":true,"content":{"application/json":{"schema":{"additionalProperties":false,"properties":{"emails":{"type":"string"}},"required":["emails"],"type":"object"}}}}}},"/rest/email-validation/report_feedback":{"post":{"tags":["Utilities"],"summary":"report_feedback","description":"Report a bug, feature request, or general feedback for this data source.\n\nUse this when something doesn't work as expected, when you'd like\na new feature, or when you have suggestions for improvement.\n\nArgs:\n    feedback: Describe the issue or suggestion.\n    feedback_type: One of 'bug', 'feature_request', or 'general'.","operationId":"email_validation_report_feedback","responses":{"200":{"description":"Successful tool call","content":{"application/json":{"schema":{"type":"object"}}}},"404":{"description":"Server or tool not found"},"500":{"description":"Tool execution error"}},"security":[{"ApiKeyHeader":[]},{"ApiKeyQuery":[]}],"requestBody":{"required":true,"content":{"application/json":{"schema":{"additionalProperties":false,"properties":{"feedback":{"type":"string"},"feedback_type":{"default":"general","type":"string"}},"required":["feedback"],"type":"object"}}}}}}},"tags":[{"name":"Utilities","description":"Data sources: Utilities"}],"components":{"securitySchemes":{"ApiKeyHeader":{"type":"apiKey","in":"header","name":"gnist-api-key","description":"API key passed via request header."},"ApiKeyQuery":{"type":"apiKey","in":"query","name":"gnist_api_key","description":"API key passed via query parameter."}}}}