> For clean Markdown of any page, append .md to the page URL. > For a complete documentation index, see https://docs.withpersona.com/2021-05-14/api-key-inflection/llms.txt. > For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://docs.withpersona.com/_mcp/server. # Key Inflection > Control the casing convention Persona uses for attribute keys in API responses. The Persona API accepts requests with attribute keys using camelCase, kebab-case, and snake\_case. All responses use kebab-case for attribute keys by default. However, you can override how attribute keys are formatted by providing an additional `Key-Inflection: ` header to the request. The Persona API currently accepts `kebab`, `camel`, and `snake` for inflecting keys. You can also set the default key inflection on the API key itself via the [Persona dashboard](https://app.withpersona.com/dashboard/api-keys). Incoming requests from webhooks are also key inflected according to the default key inflection setting on the Webhook. > Control the casing convention Persona uses for attribute keys in API responses.