Swagger won't generate right json to post from yaml

The parameter syntax is wrong. If the operation is supposed to consume application/x-www-form-urlencoded, you need to use in: form parameters instead of in: body:

 *     consumes: *       - application/x-www-form-urlencoded *     ... *     parameters: *     -  name: email *        in: form              <----------- *        description: Email *        required: true *        type: string *     -  name: password *        in: form              <----------- *        description: password *        required: true *        type: string *     -  name: fullName *        in: form              <----------- *        description: full name *        required: true *        type: string

If it is supposed to consume JSON, you need a single in: body parameter, and individual fields (email, password, etc.) should be the properties of the body object:

 *     consumes: *       - application/json *     ... *     parameters: *     -  name: body *        in: body *        required: true *        schema: *          type: object *          required: [email, password, fullName] *          properties: *            email: *              type: string *              format: email *              description: Email *            password: *              type: string *              format: password *              description: password *            fullName: *              type: string *              description: full name