feat: Checkly app connection and secrets sync (#4078)

* feat: checkly app connection
---------
Co-authored-by: greptile-apps[bot] <165735046+greptile-apps[bot]@users.noreply.github.com>

backend/src/lib/api-docs/constants.ts

@@ -2282,6 +2282,9 @@ export const AppConnections = {
     },
     RAILWAY: {
       apiToken: "The API token used to authenticate with Railway."
+    },
+    CHECKLY: {
+      apiKey: "The API key used to authenticate with Checkly."
     }
   }
 };
@@ -2488,6 +2491,9 @@ export const SecretSyncs = {
       environmentName: "The Railway environment to sync secrets to.",
       serviceId: "The Railway service that secrets should be synced to.",
       serviceName: "The Railway service that secrets should be synced to."
+    },
+    CHECKLY: {
+      accountId: "The ID of the Checkly account to sync secrets to."
     }
   }
 };

backend/src/server/routes/v1/app-connection-routers/app-connection-router.ts

@@ -39,6 +39,10 @@ import {
   CamundaConnectionListItemSchema,
   SanitizedCamundaConnectionSchema
 } from "@app/services/app-connection/camunda";
+import {
+  ChecklyConnectionListItemSchema,
+  SanitizedChecklyConnectionSchema
+} from "@app/services/app-connection/checkly";
 import {
   CloudflareConnectionListItemSchema,
   SanitizedCloudflareConnectionSchema
@@ -128,7 +132,8 @@ const SanitizedAppConnectionSchema = z.union([
   ...SanitizedCloudflareConnectionSchema.options,
   ...SanitizedBitbucketConnectionSchema.options,
   ...SanitizedZabbixConnectionSchema.options,
-  ...SanitizedRailwayConnectionSchema.options
+  ...SanitizedRailwayConnectionSchema.options,
+  ...SanitizedChecklyConnectionSchema.options
 ]);
 
 const AppConnectionOptionsSchema = z.discriminatedUnion("app", [
@@ -163,7 +168,8 @@ const AppConnectionOptionsSchema = z.discriminatedUnion("app", [
   CloudflareConnectionListItemSchema,
   BitbucketConnectionListItemSchema,
   ZabbixConnectionListItemSchema,
-  RailwayConnectionListItemSchema
+  RailwayConnectionListItemSchema,
+  ChecklyConnectionListItemSchema
 ]);
 
 export const registerAppConnectionRouter = async (server: FastifyZodProvider) => {

backend/src/server/routes/v1/app-connection-routers/checkly-connection-router.ts

@@ -0,0 +1,56 @@
+import { z } from "zod";
+
+import { readLimit } from "@app/server/config/rateLimiter";
+import { verifyAuth } from "@app/server/plugins/auth/verify-auth";
+import { AppConnection } from "@app/services/app-connection/app-connection-enums";
+import {
+  CreateChecklyConnectionSchema,
+  SanitizedChecklyConnectionSchema,
+  UpdateChecklyConnectionSchema
+} from "@app/services/app-connection/checkly";
+import { AuthMode } from "@app/services/auth/auth-type";
+
+import { registerAppConnectionEndpoints } from "./app-connection-endpoints";
+
+export const registerChecklyConnectionRouter = async (server: FastifyZodProvider) => {
+  registerAppConnectionEndpoints({
+    app: AppConnection.Checkly,
+    server,
+    sanitizedResponseSchema: SanitizedChecklyConnectionSchema,
+    createSchema: CreateChecklyConnectionSchema,
+    updateSchema: UpdateChecklyConnectionSchema
+  });
+
+  // The below endpoints are not exposed and for Infisical App use
+  server.route({
+    method: "GET",
+    url: `/:connectionId/accounts`,
+    config: {
+      rateLimit: readLimit
+    },
+    schema: {
+      params: z.object({
+        connectionId: z.string().uuid()
+      }),
+      response: {
+        200: z.object({
+          accounts: z
+            .object({
+              name: z.string(),
+              id: z.string(),
+              runtimeId: z.string()
+            })
+            .array()
+        })
+      }
+    },
+    onRequest: verifyAuth([AuthMode.JWT]),
+    handler: async (req) => {
+      const { connectionId } = req.params;
+
+      const accounts = await server.services.appConnection.checkly.listAccounts(connectionId, req.permission);
+
+      return { accounts };
+    }
+  });
+};

backend/src/server/routes/v1/app-connection-routers/index.ts

@@ -11,6 +11,7 @@ import { registerAzureDevOpsConnectionRouter } from "./azure-devops-connection-r
 import { registerAzureKeyVaultConnectionRouter } from "./azure-key-vault-connection-router";
 import { registerBitbucketConnectionRouter } from "./bitbucket-connection-router";
 import { registerCamundaConnectionRouter } from "./camunda-connection-router";
+import { registerChecklyConnectionRouter } from "./checkly-connection-router";
 import { registerCloudflareConnectionRouter } from "./cloudflare-connection-router";
 import { registerDatabricksConnectionRouter } from "./databricks-connection-router";
 import { registerFlyioConnectionRouter } from "./flyio-connection-router";
@@ -68,5 +69,6 @@ export const APP_CONNECTION_REGISTER_ROUTER_MAP: Record<AppConnection, (server:
     [AppConnection.Cloudflare]: registerCloudflareConnectionRouter,
     [AppConnection.Bitbucket]: registerBitbucketConnectionRouter,
     [AppConnection.Zabbix]: registerZabbixConnectionRouter,
-    [AppConnection.Railway]: registerRailwayConnectionRouter
+    [AppConnection.Railway]: registerRailwayConnectionRouter,
+    [AppConnection.Checkly]: registerChecklyConnectionRouter
   };

backend/src/server/routes/v1/secret-sync-routers/checkly-sync-router.ts

@@ -0,0 +1,17 @@
+import {
+  ChecklySyncSchema,
+  CreateChecklySyncSchema,
+  UpdateChecklySyncSchema
+} from "@app/services/secret-sync/checkly/checkly-sync-schemas";
+import { SecretSync } from "@app/services/secret-sync/secret-sync-enums";
+
+import { registerSyncSecretsEndpoints } from "./secret-sync-endpoints";
+
+export const registerChecklySyncRouter = async (server: FastifyZodProvider) =>
+  registerSyncSecretsEndpoints({
+    destination: SecretSync.Checkly,
+    server,
+    responseSchema: ChecklySyncSchema,
+    createSchema: CreateChecklySyncSchema,
+    updateSchema: UpdateChecklySyncSchema
+  });

backend/src/server/routes/v1/secret-sync-routers/index.ts

@@ -8,6 +8,7 @@ import { registerAzureAppConfigurationSyncRouter } from "./azure-app-configurati
 import { registerAzureDevOpsSyncRouter } from "./azure-devops-sync-router";
 import { registerAzureKeyVaultSyncRouter } from "./azure-key-vault-sync-router";
 import { registerCamundaSyncRouter } from "./camunda-sync-router";
+import { registerChecklySyncRouter } from "./checkly-sync-router";
 import { registerCloudflarePagesSyncRouter } from "./cloudflare-pages-sync-router";
 import { registerCloudflareWorkersSyncRouter } from "./cloudflare-workers-sync-router";
 import { registerDatabricksSyncRouter } from "./databricks-sync-router";
@@ -54,5 +55,6 @@ export const SECRET_SYNC_REGISTER_ROUTER_MAP: Record<SecretSync, (server: Fastif
   [SecretSync.CloudflareWorkers]: registerCloudflareWorkersSyncRouter,
 
   [SecretSync.Zabbix]: registerZabbixSyncRouter,
-  [SecretSync.Railway]: registerRailwaySyncRouter
+  [SecretSync.Railway]: registerRailwaySyncRouter,
+  [SecretSync.Checkly]: registerChecklySyncRouter
 };

backend/src/server/routes/v1/secret-sync-routers/secret-sync-router.ts

@@ -22,6 +22,7 @@ import {
 import { AzureDevOpsSyncListItemSchema, AzureDevOpsSyncSchema } from "@app/services/secret-sync/azure-devops";
 import { AzureKeyVaultSyncListItemSchema, AzureKeyVaultSyncSchema } from "@app/services/secret-sync/azure-key-vault";
 import { CamundaSyncListItemSchema, CamundaSyncSchema } from "@app/services/secret-sync/camunda";
+import { ChecklySyncListItemSchema, ChecklySyncSchema } from "@app/services/secret-sync/checkly/checkly-sync-schemas";
 import {
   CloudflarePagesSyncListItemSchema,
   CloudflarePagesSyncSchema
@@ -72,7 +73,8 @@ const SecretSyncSchema = z.discriminatedUnion("destination", [
   CloudflareWorkersSyncSchema,
 
   ZabbixSyncSchema,
-  RailwaySyncSchema
+  RailwaySyncSchema,
+  ChecklySyncSchema
 ]);
 
 const SecretSyncOptionsSchema = z.discriminatedUnion("destination", [
@@ -101,7 +103,8 @@ const SecretSyncOptionsSchema = z.discriminatedUnion("destination", [
   CloudflareWorkersSyncListItemSchema,
 
   ZabbixSyncListItemSchema,
-  RailwaySyncListItemSchema
+  RailwaySyncListItemSchema,
+  ChecklySyncListItemSchema
 ]);
 
 export const registerSecretSyncRouter = async (server: FastifyZodProvider) => {

backend/src/services/app-connection/app-connection-enums.ts

@@ -30,7 +30,8 @@ export enum AppConnection {
   Cloudflare = "cloudflare",
   Zabbix = "zabbix",
   Railway = "railway",
-  Bitbucket = "bitbucket"
+  Bitbucket = "bitbucket",
+  Checkly = "checkly"
 }
 
 export enum AWSRegion {

backend/src/services/app-connection/app-connection-fns.ts

@@ -56,6 +56,7 @@ import {
   validateBitbucketConnectionCredentials
 } from "./bitbucket";
 import { CamundaConnectionMethod, getCamundaConnectionListItem, validateCamundaConnectionCredentials } from "./camunda";
+import { ChecklyConnectionMethod, getChecklyConnectionListItem, validateChecklyConnectionCredentials } from "./checkly";
 import { CloudflareConnectionMethod } from "./cloudflare/cloudflare-connection-enum";
 import {
   getCloudflareConnectionListItem,
@@ -146,7 +147,8 @@ export const listAppConnectionOptions = () => {
     getCloudflareConnectionListItem(),
     getZabbixConnectionListItem(),
     getRailwayConnectionListItem(),
-    getBitbucketConnectionListItem()
+    getBitbucketConnectionListItem(),
+    getChecklyConnectionListItem()
   ].sort((a, b) => a.name.localeCompare(b.name));
 };
 
@@ -229,7 +231,8 @@ export const validateAppConnectionCredentials = async (
     [AppConnection.Cloudflare]: validateCloudflareConnectionCredentials as TAppConnectionCredentialsValidator,
     [AppConnection.Zabbix]: validateZabbixConnectionCredentials as TAppConnectionCredentialsValidator,
     [AppConnection.Railway]: validateRailwayConnectionCredentials as TAppConnectionCredentialsValidator,
-    [AppConnection.Bitbucket]: validateBitbucketConnectionCredentials as TAppConnectionCredentialsValidator
+    [AppConnection.Bitbucket]: validateBitbucketConnectionCredentials as TAppConnectionCredentialsValidator,
+    [AppConnection.Checkly]: validateChecklyConnectionCredentials as TAppConnectionCredentialsValidator
   };
 
   return VALIDATE_APP_CONNECTION_CREDENTIALS_MAP[appConnection.app](appConnection);
@@ -287,6 +290,7 @@ export const getAppConnectionMethodName = (method: TAppConnection["method"]) =>
     case LdapConnectionMethod.SimpleBind:
       return "Simple Bind";
     case RenderConnectionMethod.ApiKey:
+    case ChecklyConnectionMethod.ApiKey:
       return "API Key";
     default:
       // eslint-disable-next-line @typescript-eslint/restrict-template-expressions
@@ -350,7 +354,8 @@ export const TRANSITION_CONNECTION_CREDENTIALS_TO_PLATFORM: Record<
   [AppConnection.Cloudflare]: platformManagedCredentialsNotSupported,
   [AppConnection.Zabbix]: platformManagedCredentialsNotSupported,
   [AppConnection.Railway]: platformManagedCredentialsNotSupported,
-  [AppConnection.Bitbucket]: platformManagedCredentialsNotSupported
+  [AppConnection.Bitbucket]: platformManagedCredentialsNotSupported,
+  [AppConnection.Checkly]: platformManagedCredentialsNotSupported
 };
 
 export const enterpriseAppCheck = async (

backend/src/services/app-connection/app-connection-maps.ts

@@ -32,7 +32,8 @@ export const APP_CONNECTION_NAME_MAP: Record<AppConnection, string> = {
   [AppConnection.Cloudflare]: "Cloudflare",
   [AppConnection.Zabbix]: "Zabbix",
   [AppConnection.Railway]: "Railway",
-  [AppConnection.Bitbucket]: "Bitbucket"
+  [AppConnection.Bitbucket]: "Bitbucket",
+  [AppConnection.Checkly]: "Checkly"
 };
 
 export const APP_CONNECTION_PLAN_MAP: Record<AppConnection, AppConnectionPlanType> = {
@@ -67,5 +68,6 @@ export const APP_CONNECTION_PLAN_MAP: Record<AppConnection, AppConnectionPlanTyp
   [AppConnection.Cloudflare]: AppConnectionPlanType.Regular,
   [AppConnection.Zabbix]: AppConnectionPlanType.Regular,
   [AppConnection.Railway]: AppConnectionPlanType.Regular,
-  [AppConnection.Bitbucket]: AppConnectionPlanType.Regular
+  [AppConnection.Bitbucket]: AppConnectionPlanType.Regular,
+  [AppConnection.Checkly]: AppConnectionPlanType.Regular
 };

backend/src/services/app-connection/app-connection-service.ts

@@ -49,6 +49,8 @@ import { ValidateBitbucketConnectionCredentialsSchema } from "./bitbucket";
 import { bitbucketConnectionService } from "./bitbucket/bitbucket-connection-service";
 import { ValidateCamundaConnectionCredentialsSchema } from "./camunda";
 import { camundaConnectionService } from "./camunda/camunda-connection-service";
+import { ValidateChecklyConnectionCredentialsSchema } from "./checkly";
+import { checklyConnectionService } from "./checkly/checkly-connection-service";
 import { ValidateCloudflareConnectionCredentialsSchema } from "./cloudflare/cloudflare-connection-schema";
 import { cloudflareConnectionService } from "./cloudflare/cloudflare-connection-service";
 import { ValidateDatabricksConnectionCredentialsSchema } from "./databricks";
@@ -128,7 +130,8 @@ const VALIDATE_APP_CONNECTION_CREDENTIALS_MAP: Record<AppConnection, TValidateAp
   [AppConnection.Cloudflare]: ValidateCloudflareConnectionCredentialsSchema,
   [AppConnection.Zabbix]: ValidateZabbixConnectionCredentialsSchema,
   [AppConnection.Railway]: ValidateRailwayConnectionCredentialsSchema,
-  [AppConnection.Bitbucket]: ValidateBitbucketConnectionCredentialsSchema
+  [AppConnection.Bitbucket]: ValidateBitbucketConnectionCredentialsSchema,
+  [AppConnection.Checkly]: ValidateChecklyConnectionCredentialsSchema
 };
 
 export const appConnectionServiceFactory = ({
@@ -541,6 +544,7 @@ export const appConnectionServiceFactory = ({
     cloudflare: cloudflareConnectionService(connectAppConnectionById),
     zabbix: zabbixConnectionService(connectAppConnectionById),
     railway: railwayConnectionService(connectAppConnectionById),
-    bitbucket: bitbucketConnectionService(connectAppConnectionById)
+    bitbucket: bitbucketConnectionService(connectAppConnectionById),
+    checkly: checklyConnectionService(connectAppConnectionById)
   };
 };

backend/src/services/app-connection/app-connection-types.ts

@@ -68,6 +68,12 @@ import {
   TCamundaConnectionInput,
   TValidateCamundaConnectionCredentialsSchema
 } from "./camunda";
+import {
+  TChecklyConnection,
+  TChecklyConnectionConfig,
+  TChecklyConnectionInput,
+  TValidateChecklyConnectionCredentialsSchema
+} from "./checkly";
 import {
   TCloudflareConnection,
   TCloudflareConnectionConfig,
@@ -217,6 +223,7 @@ export type TAppConnection = { id: string } & (
   | TBitbucketConnection
   | TZabbixConnection
   | TRailwayConnection
+  | TChecklyConnection
 );
 
 export type TAppConnectionRaw = NonNullable<Awaited<ReturnType<TAppConnectionDALFactory["findById"]>>>;
@@ -256,6 +263,7 @@ export type TAppConnectionInput = { id: string } & (
   | TBitbucketConnectionInput
   | TZabbixConnectionInput
   | TRailwayConnectionInput
+  | TChecklyConnectionInput
 );
 
 export type TSqlConnectionInput =
@@ -302,7 +310,8 @@ export type TAppConnectionConfig =
   | TCloudflareConnectionConfig
   | TBitbucketConnectionConfig
   | TZabbixConnectionConfig
-  | TRailwayConnectionConfig;
+  | TRailwayConnectionConfig
+  | TChecklyConnectionConfig;
 
 export type TValidateAppConnectionCredentialsSchema =
   | TValidateAwsConnectionCredentialsSchema
@@ -336,7 +345,8 @@ export type TValidateAppConnectionCredentialsSchema =
   | TValidateCloudflareConnectionCredentialsSchema
   | TValidateBitbucketConnectionCredentialsSchema
   | TValidateZabbixConnectionCredentialsSchema
-  | TValidateRailwayConnectionCredentialsSchema;
+  | TValidateRailwayConnectionCredentialsSchema
+  | TValidateChecklyConnectionCredentialsSchema;
 
 export type TListAwsConnectionKmsKeys = {
   connectionId: string;

backend/src/services/app-connection/checkly/checkly-connection-constants.ts

@@ -0,0 +1,3 @@
+export enum ChecklyConnectionMethod {
+  ApiKey = "api-key"
+}

backend/src/services/app-connection/checkly/checkly-connection-fns.ts

@@ -0,0 +1,35 @@
+/* eslint-disable no-await-in-loop */
+import { AxiosError } from "axios";
+
+import { BadRequestError } from "@app/lib/errors";
+import { AppConnection } from "@app/services/app-connection/app-connection-enums";
+
+import { ChecklyConnectionMethod } from "./checkly-connection-constants";
+import { ChecklyPublicAPI } from "./checkly-connection-public-client";
+import { TChecklyConnectionConfig } from "./checkly-connection-types";
+
+export const getChecklyConnectionListItem = () => {
+  return {
+    name: "Checkly" as const,
+    app: AppConnection.Checkly as const,
+    methods: Object.values(ChecklyConnectionMethod)
+  };
+};
+
+export const validateChecklyConnectionCredentials = async (config: TChecklyConnectionConfig) => {
+  try {
+    await ChecklyPublicAPI.healthcheck(config);
+  } catch (error: unknown) {
+    if (error instanceof AxiosError) {
+      throw new BadRequestError({
+        message: `Failed to validate credentials: ${error.message || "Unknown error"}`
+      });
+    }
+
+    throw new BadRequestError({
+      message: "Unable to validate connection - verify credentials"
+    });
+  }
+
+  return config.credentials;
+};

backend/src/services/app-connection/checkly/checkly-connection-public-client.ts

@@ -0,0 +1,186 @@
+/* eslint-disable no-await-in-loop */
+/* eslint-disable class-methods-use-this */
+import { AxiosInstance, AxiosRequestConfig, AxiosResponse, HttpStatusCode, isAxiosError } from "axios";
+
+import { createRequestClient } from "@app/lib/config/request";
+import { IntegrationUrls } from "@app/services/integration-auth/integration-list";
+
+import { ChecklyConnectionMethod } from "./checkly-connection-constants";
+import { TChecklyAccount, TChecklyConnectionConfig, TChecklyVariable } from "./checkly-connection-types";
+
+export function getChecklyAuthHeaders(
+  connection: TChecklyConnectionConfig,
+  accountId?: string
+): Record<string, string> {
+  switch (connection.method) {
+    case ChecklyConnectionMethod.ApiKey:
+      return {
+        Authorization: `Bearer ${connection.credentials.apiKey}`,
+        ...(accountId && { "X-Checkly-Account": accountId })
+      };
+    default:
+      throw new Error(`Unsupported Checkly connection method`);
+  }
+}
+
+export function getChecklyRatelimiter(response: AxiosResponse): {
+  maxAttempts: number;
+  isRatelimited: boolean;
+  wait: () => Promise<void>;
+} {
+  const wait = () => {
+    return new Promise<void>((res) => {
+      setTimeout(res, 60 * 1000); // Wait for 60 seconds
+    });
+  };
+
+  return {
+    isRatelimited: response.status === HttpStatusCode.TooManyRequests,
+    wait,
+    maxAttempts: 3
+  };
+}
+
+class ChecklyPublicClient {
+  private client: AxiosInstance;
+
+  constructor() {
+    this.client = createRequestClient({
+      baseURL: IntegrationUrls.CHECKLY_API_URL,
+      headers: {
+        "Content-Type": "application/json"
+      }
+    });
+  }
+
+  async send<T>(
+    connection: TChecklyConnectionConfig,
+    config: AxiosRequestConfig & { accountId?: string },
+    retryAttempt = 0
+  ): Promise<T | undefined> {
+    const response = await this.client.request<T>({
+      ...config,
+      timeout: 1000 * 60, // 60 seconds timeout
+      validateStatus: (status) => (status >= 200 && status < 300) || status === HttpStatusCode.TooManyRequests,
+      headers: getChecklyAuthHeaders(connection, config.accountId)
+    });
+    const limiter = getChecklyRatelimiter(response);
+
+    if (limiter.isRatelimited && retryAttempt <= limiter.maxAttempts) {
+      await limiter.wait();
+      return this.send(connection, config, retryAttempt + 1);
+    }
+
+    return response.data;
+  }
+
+  healthcheck(connection: TChecklyConnectionConfig) {
+    switch (connection.method) {
+      case ChecklyConnectionMethod.ApiKey:
+        return this.getChecklyAccounts(connection);
+      default:
+        throw new Error(`Unsupported Checkly connection method`);
+    }
+  }
+
+  async getVariables(connection: TChecklyConnectionConfig, accountId: string, limit: number = 50, page: number = 1) {
+    const res = await this.send<TChecklyVariable[]>(connection, {
+      accountId,
+      method: "GET",
+      url: `/v1/variables`,
+      params: {
+        limit,
+        page
+      }
+    });
+
+    return res;
+  }
+
+  async createVariable(connection: TChecklyConnectionConfig, accountId: string, variable: TChecklyVariable) {
+    const res = await this.send<TChecklyVariable>(connection, {
+      accountId,
+      method: "POST",
+      url: `/v1/variables`,
+      data: variable
+    });
+
+    return res;
+  }
+
+  async updateVariable(connection: TChecklyConnectionConfig, accountId: string, variable: TChecklyVariable) {
+    const res = await this.send<TChecklyVariable>(connection, {
+      accountId,
+      method: "PUT",
+      url: `/v1/variables/${variable.key}`,
+      data: variable
+    });
+
+    return res;
+  }
+
+  async getVariable(connection: TChecklyConnectionConfig, accountId: string, variable: Pick<TChecklyVariable, "key">) {
+    try {
+      const res = await this.send<TChecklyVariable>(connection, {
+        accountId,
+        method: "GET",
+        url: `/v1/variables/${variable.key}`
+      });
+
+      return res;
+    } catch (error) {
+      if (isAxiosError(error) && error.response?.status === HttpStatusCode.NotFound) {
+        return null;
+      }
+
+      throw error;
+    }
+  }
+
+  async upsertVariable(connection: TChecklyConnectionConfig, accountId: string, variable: TChecklyVariable) {
+    const res = await this.getVariable(connection, accountId, variable);
+
+    if (!res) {
+      return this.createVariable(connection, accountId, variable);
+    }
+
+    await this.updateVariable(connection, accountId, variable);
+
+    return res;
+  }
+
+  async deleteVariable(
+    connection: TChecklyConnectionConfig,
+    accountId: string,
+    variable: Pick<TChecklyVariable, "key">
+  ) {
+    try {
+      const res = await this.send<TChecklyVariable>(connection, {
+        accountId,
+        method: "DELETE",
+        url: `/v1/variables/${variable.key}`
+      });
+
+      return res;
+    } catch (error) {
+      if (isAxiosError(error) && error.response?.status === HttpStatusCode.NotFound) {
+        return null;
+      }
+
+      throw error;
+    }
+  }
+
+  async getChecklyAccounts(connection: TChecklyConnectionConfig) {
+    // This endpoint is in beta and might be subject to changes
+    // Refer: https://developers.checklyhq.com/reference/getv1accounts
+    const res = await this.send<TChecklyAccount[]>(connection, {
+      method: "GET",
+      url: `/v1/accounts`
+    });
+
+    return res;
+  }
+}
+
+export const ChecklyPublicAPI = new ChecklyPublicClient();

backend/src/services/app-connection/checkly/checkly-connection-schemas.ts

@@ -0,0 +1,62 @@
+import z from "zod";
+
+import { AppConnections } from "@app/lib/api-docs";
+import { AppConnection } from "@app/services/app-connection/app-connection-enums";
+import {
+  BaseAppConnectionSchema,
+  GenericCreateAppConnectionFieldsSchema,
+  GenericUpdateAppConnectionFieldsSchema
+} from "@app/services/app-connection/app-connection-schemas";
+
+import { ChecklyConnectionMethod } from "./checkly-connection-constants";
+
+export const ChecklyConnectionMethodSchema = z
+  .nativeEnum(ChecklyConnectionMethod)
+  .describe(AppConnections.CREATE(AppConnection.Checkly).method);
+
+export const ChecklyConnectionAccessTokenCredentialsSchema = z.object({
+  apiKey: z.string().trim().min(1, "API Key required").max(255).describe(AppConnections.CREDENTIALS.CHECKLY.apiKey)
+});
+
+const BaseChecklyConnectionSchema = BaseAppConnectionSchema.extend({
+  app: z.literal(AppConnection.Checkly)
+});
+
+export const ChecklyConnectionSchema = BaseChecklyConnectionSchema.extend({
+  method: ChecklyConnectionMethodSchema,
+  credentials: ChecklyConnectionAccessTokenCredentialsSchema
+});
+
+export const SanitizedChecklyConnectionSchema = z.discriminatedUnion("method", [
+  BaseChecklyConnectionSchema.extend({
+    method: ChecklyConnectionMethodSchema,
+    credentials: ChecklyConnectionAccessTokenCredentialsSchema.pick({})
+  })
+]);
+
+export const ValidateChecklyConnectionCredentialsSchema = z.discriminatedUnion("method", [
+  z.object({
+    method: ChecklyConnectionMethodSchema,
+    credentials: ChecklyConnectionAccessTokenCredentialsSchema.describe(
+      AppConnections.CREATE(AppConnection.Checkly).credentials
+    )
+  })
+]);
+
+export const CreateChecklyConnectionSchema = ValidateChecklyConnectionCredentialsSchema.and(
+  GenericCreateAppConnectionFieldsSchema(AppConnection.Checkly)
+);
+
+export const UpdateChecklyConnectionSchema = z
+  .object({
+    credentials: ChecklyConnectionAccessTokenCredentialsSchema.optional().describe(
+      AppConnections.UPDATE(AppConnection.Checkly).credentials
+    )
+  })
+  .and(GenericUpdateAppConnectionFieldsSchema(AppConnection.Checkly));
+
+export const ChecklyConnectionListItemSchema = z.object({
+  name: z.literal("Checkly"),
+  app: z.literal(AppConnection.Checkly),
+  methods: z.nativeEnum(ChecklyConnectionMethod).array()
+});

backend/src/services/app-connection/checkly/checkly-connection-service.ts

@@ -0,0 +1,30 @@
+import { logger } from "@app/lib/logger";
+import { OrgServiceActor } from "@app/lib/types";
+
+import { AppConnection } from "../app-connection-enums";
+import { ChecklyPublicAPI } from "./checkly-connection-public-client";
+import { TChecklyConnection } from "./checkly-connection-types";
+
+type TGetAppConnectionFunc = (
+  app: AppConnection,
+  connectionId: string,
+  actor: OrgServiceActor
+) => Promise<TChecklyConnection>;
+
+// eslint-disable-next-line @typescript-eslint/no-unused-vars
+export const checklyConnectionService = (getAppConnection: TGetAppConnectionFunc) => {
+  const listAccounts = async (connectionId: string, actor: OrgServiceActor) => {
+    const appConnection = await getAppConnection(AppConnection.Checkly, connectionId, actor);
+    try {
+      const accounts = await ChecklyPublicAPI.getChecklyAccounts(appConnection);
+      return accounts!;
+    } catch (error) {
+      logger.error(error, "Failed to list accounts on Checkly");
+      return [];
+    }
+  };
+
+  return {
+    listAccounts
+  };
+};

backend/src/services/app-connection/checkly/checkly-connection-types.ts

@@ -0,0 +1,35 @@
+import z from "zod";
+
+import { DiscriminativePick } from "@app/lib/types";
+
+import { AppConnection } from "../app-connection-enums";
+import {
+  ChecklyConnectionSchema,
+  CreateChecklyConnectionSchema,
+  ValidateChecklyConnectionCredentialsSchema
+} from "./checkly-connection-schemas";
+
+export type TChecklyConnection = z.infer<typeof ChecklyConnectionSchema>;
+
+export type TChecklyConnectionInput = z.infer<typeof CreateChecklyConnectionSchema> & {
+  app: AppConnection.Checkly;
+};
+
+export type TValidateChecklyConnectionCredentialsSchema = typeof ValidateChecklyConnectionCredentialsSchema;
+
+export type TChecklyConnectionConfig = DiscriminativePick<TChecklyConnection, "method" | "app" | "credentials"> & {
+  orgId: string;
+};
+
+export type TChecklyVariable = {
+  key: string;
+  value: string;
+  locked: boolean;
+  secret: boolean;
+};
+
+export type TChecklyAccount = {
+  id: string;
+  name: string;
+  runtimeId: string;
+};

backend/src/services/app-connection/checkly/index.ts

@@ -0,0 +1,4 @@
+export * from "./checkly-connection-constants";
+export * from "./checkly-connection-fns";
+export * from "./checkly-connection-schemas";
+export * from "./checkly-connection-types";

backend/src/services/secret-sync/checkly/checkly-sync-constants.ts

@@ -0,0 +1,10 @@
+import { AppConnection } from "@app/services/app-connection/app-connection-enums";
+import { SecretSync } from "@app/services/secret-sync/secret-sync-enums";
+import { TSecretSyncListItem } from "@app/services/secret-sync/secret-sync-types";
+
+export const CHECKLY_SYNC_LIST_OPTION: TSecretSyncListItem = {
+  name: "Checkly",
+  destination: SecretSync.Checkly,
+  connection: AppConnection.Checkly,
+  canImportSecrets: false
+};

backend/src/services/secret-sync/checkly/checkly-sync-fns.ts

@@ -0,0 +1,102 @@
+/* eslint-disable no-continue */
+/* eslint-disable @typescript-eslint/no-unsafe-member-access */
+/* eslint-disable @typescript-eslint/no-unsafe-assignment */
+
+import { ChecklyPublicAPI } from "@app/services/app-connection/checkly/checkly-connection-public-client";
+import { matchesSchema } from "@app/services/secret-sync/secret-sync-fns";
+
+import { SecretSyncError } from "../secret-sync-errors";
+import { SECRET_SYNC_NAME_MAP } from "../secret-sync-maps";
+import { TSecretMap } from "../secret-sync-types";
+import { TChecklySyncWithCredentials } from "./checkly-sync-types";
+
+export const ChecklySyncFns = {
+  async getSecrets(secretSync: TChecklySyncWithCredentials) {
+    throw new Error(`${SECRET_SYNC_NAME_MAP[secretSync.destination]} does not support importing secrets.`);
+  },
+
+  async syncSecrets(secretSync: TChecklySyncWithCredentials, secretMap: TSecretMap) {
+    const {
+      environment,
+      syncOptions: { disableSecretDeletion, keySchema }
+    } = secretSync;
+
+    const config = secretSync.destinationConfig;
+
+    const variables = await ChecklyPublicAPI.getVariables(secretSync.connection, config.accountId);
+
+    const checklySecrets = Object.fromEntries(variables!.map((variable) => [variable.key, variable]));
+
+    for await (const key of Object.keys(secretMap)) {
+      try {
+        const entry = secretMap[key];
+
+        // If value is empty, we skip the upsert - checkly does not allow empty values
+        if (entry.value.trim() === "") {
+          // Delete the secret from Checkly if its empty
+          if (!disableSecretDeletion) {
+            await ChecklyPublicAPI.deleteVariable(secretSync.connection, config.accountId, {
+              key
+            });
+          }
+          continue; // Skip empty values
+        }
+
+        await ChecklyPublicAPI.upsertVariable(secretSync.connection, config.accountId, {
+          key,
+          value: entry.value,
+          secret: true,
+          locked: true
+        });
+      } catch (error) {
+        throw new SecretSyncError({
+          error,
+          secretKey: key
+        });
+      }
+    }
+
+    if (disableSecretDeletion) return;
+
+    for await (const key of Object.keys(checklySecrets)) {
+      try {
+        // eslint-disable-next-line no-continue
+        if (!matchesSchema(key, environment?.slug || "", keySchema)) continue;
+
+        if (!secretMap[key]) {
+          await ChecklyPublicAPI.deleteVariable(secretSync.connection, config.accountId, {
+            key
+          });
+        }
+      } catch (error) {
+        throw new SecretSyncError({
+          error,
+          secretKey: key
+        });
+      }
+    }
+  },
+
+  async removeSecrets(secretSync: TChecklySyncWithCredentials, secretMap: TSecretMap) {
+    const config = secretSync.destinationConfig;
+
+    const variables = await ChecklyPublicAPI.getVariables(secretSync.connection, config.accountId);
+
+    const checklySecrets = Object.fromEntries(variables!.map((variable) => [variable.key, variable]));
+
+    for await (const secret of Object.keys(checklySecrets)) {
+      try {
+        if (secret in secretMap) {
+          await ChecklyPublicAPI.deleteVariable(secretSync.connection, config.accountId, {
+            key: secret
+          });
+        }
+      } catch (error) {
+        throw new SecretSyncError({
+          error,
+          secretKey: secret
+        });
+      }
+    }
+  }
+};

backend/src/services/secret-sync/checkly/checkly-sync-schemas.ts

@@ -0,0 +1,43 @@
+import { z } from "zod";
+
+import { AppConnection } from "@app/services/app-connection/app-connection-enums";
+import { SecretSync } from "@app/services/secret-sync/secret-sync-enums";
+import {
+  BaseSecretSyncSchema,
+  GenericCreateSecretSyncFieldsSchema,
+  GenericUpdateSecretSyncFieldsSchema
+} from "@app/services/secret-sync/secret-sync-schemas";
+import { TSyncOptionsConfig } from "@app/services/secret-sync/secret-sync-types";
+
+const ChecklySyncDestinationConfigSchema = z.object({
+  accountId: z.string().min(1, "Account ID is required").max(255, "Account ID must be less than 255 characters"),
+  accountName: z.string().min(1, "Account Name is required").max(255, "Account ID must be less than 255 characters")
+});
+
+const ChecklySyncOptionsConfig: TSyncOptionsConfig = { canImportSecrets: false };
+
+export const ChecklySyncSchema = BaseSecretSyncSchema(SecretSync.Checkly, ChecklySyncOptionsConfig).extend({
+  destination: z.literal(SecretSync.Checkly),
+  destinationConfig: ChecklySyncDestinationConfigSchema
+});
+
+export const CreateChecklySyncSchema = GenericCreateSecretSyncFieldsSchema(
+  SecretSync.Checkly,
+  ChecklySyncOptionsConfig
+).extend({
+  destinationConfig: ChecklySyncDestinationConfigSchema
+});
+
+export const UpdateChecklySyncSchema = GenericUpdateSecretSyncFieldsSchema(
+  SecretSync.Checkly,
+  ChecklySyncOptionsConfig
+).extend({
+  destinationConfig: ChecklySyncDestinationConfigSchema.optional()
+});
+
+export const ChecklySyncListItemSchema = z.object({
+  name: z.literal("Checkly"),
+  connection: z.literal(AppConnection.Checkly),
+  destination: z.literal(SecretSync.Checkly),
+  canImportSecrets: z.literal(false)
+});

backend/src/services/secret-sync/checkly/checkly-sync-types.ts

@@ -0,0 +1,23 @@
+import z from "zod";
+
+import { TChecklyConnection, TChecklyVariable } from "@app/services/app-connection/checkly";
+
+import { ChecklySyncListItemSchema, ChecklySyncSchema, CreateChecklySyncSchema } from "./checkly-sync-schemas";
+
+export type TChecklySyncListItem = z.infer<typeof ChecklySyncListItemSchema>;
+
+export type TChecklySync = z.infer<typeof ChecklySyncSchema>;
+
+export type TChecklySyncInput = z.infer<typeof CreateChecklySyncSchema>;
+
+export type TChecklySyncWithCredentials = TChecklySync & {
+  connection: TChecklyConnection;
+};
+
+export type TChecklySecret = TChecklyVariable;
+
+export type TChecklyVariablesGraphResponse = {
+  data: {
+    variables: Record<string, string>;
+  };
+};

backend/src/services/secret-sync/secret-sync-enums.ts

@@ -24,7 +24,8 @@ export enum SecretSync {
   CloudflareWorkers = "cloudflare-workers",
 
   Zabbix = "zabbix",
-  Railway = "railway"
+  Railway = "railway",
+  Checkly = "checkly"
 }
 
 export enum SecretSyncInitialSyncBehavior {

backend/src/services/secret-sync/secret-sync-fns.ts

@@ -29,6 +29,8 @@ import { AZURE_APP_CONFIGURATION_SYNC_LIST_OPTION, azureAppConfigurationSyncFact
 import { AZURE_DEVOPS_SYNC_LIST_OPTION, azureDevOpsSyncFactory } from "./azure-devops";
 import { AZURE_KEY_VAULT_SYNC_LIST_OPTION, azureKeyVaultSyncFactory } from "./azure-key-vault";
 import { CAMUNDA_SYNC_LIST_OPTION, camundaSyncFactory } from "./camunda";
+import { CHECKLY_SYNC_LIST_OPTION } from "./checkly/checkly-sync-constants";
+import { ChecklySyncFns } from "./checkly/checkly-sync-fns";
 import { CLOUDFLARE_PAGES_SYNC_LIST_OPTION } from "./cloudflare-pages/cloudflare-pages-constants";
 import { CloudflarePagesSyncFns } from "./cloudflare-pages/cloudflare-pages-fns";
 import { CLOUDFLARE_WORKERS_SYNC_LIST_OPTION, CloudflareWorkersSyncFns } from "./cloudflare-workers";
@@ -76,7 +78,8 @@ const SECRET_SYNC_LIST_OPTIONS: Record<SecretSync, TSecretSyncListItem> = {
   [SecretSync.CloudflareWorkers]: CLOUDFLARE_WORKERS_SYNC_LIST_OPTION,
 
   [SecretSync.Zabbix]: ZABBIX_SYNC_LIST_OPTION,
-  [SecretSync.Railway]: RAILWAY_SYNC_LIST_OPTION
+  [SecretSync.Railway]: RAILWAY_SYNC_LIST_OPTION,
+  [SecretSync.Checkly]: CHECKLY_SYNC_LIST_OPTION
 };
 
 export const listSecretSyncOptions = () => {
@@ -250,6 +253,8 @@ export const SecretSyncFns = {
         return ZabbixSyncFns.syncSecrets(secretSync, schemaSecretMap);
       case SecretSync.Railway:
         return RailwaySyncFns.syncSecrets(secretSync, schemaSecretMap);
+      case SecretSync.Checkly:
+        return ChecklySyncFns.syncSecrets(secretSync, schemaSecretMap);
       default:
         throw new Error(
           `Unhandled sync destination for sync secrets fns: ${(secretSync as TSecretSyncWithCredentials).destination}`
@@ -351,6 +356,9 @@ export const SecretSyncFns = {
       case SecretSync.Railway:
         secretMap = await RailwaySyncFns.getSecrets(secretSync);
         break;
+      case SecretSync.Checkly:
+        secretMap = await ChecklySyncFns.getSecrets(secretSync);
+        break;
       default:
         throw new Error(
           `Unhandled sync destination for get secrets fns: ${(secretSync as TSecretSyncWithCredentials).destination}`
@@ -434,6 +442,8 @@ export const SecretSyncFns = {
         return ZabbixSyncFns.removeSecrets(secretSync, schemaSecretMap);
       case SecretSync.Railway:
         return RailwaySyncFns.removeSecrets(secretSync, schemaSecretMap);
+      case SecretSync.Checkly:
+        return ChecklySyncFns.removeSecrets(secretSync, schemaSecretMap);
       default:
         throw new Error(
           `Unhandled sync destination for remove secrets fns: ${(secretSync as TSecretSyncWithCredentials).destination}`

backend/src/services/secret-sync/secret-sync-maps.ts

@@ -27,7 +27,8 @@ export const SECRET_SYNC_NAME_MAP: Record<SecretSync, string> = {
   [SecretSync.CloudflareWorkers]: "Cloudflare Workers",
 
   [SecretSync.Zabbix]: "Zabbix",
-  [SecretSync.Railway]: "Railway"
+  [SecretSync.Railway]: "Railway",
+  [SecretSync.Checkly]: "Checkly"
 };
 
 export const SECRET_SYNC_CONNECTION_MAP: Record<SecretSync, AppConnection> = {
@@ -56,7 +57,8 @@ export const SECRET_SYNC_CONNECTION_MAP: Record<SecretSync, AppConnection> = {
   [SecretSync.CloudflareWorkers]: AppConnection.Cloudflare,
 
   [SecretSync.Zabbix]: AppConnection.Zabbix,
-  [SecretSync.Railway]: AppConnection.Railway
+  [SecretSync.Railway]: AppConnection.Railway,
+  [SecretSync.Checkly]: AppConnection.Checkly
 };
 
 export const SECRET_SYNC_PLAN_MAP: Record<SecretSync, SecretSyncPlanType> = {
@@ -85,5 +87,6 @@ export const SECRET_SYNC_PLAN_MAP: Record<SecretSync, SecretSyncPlanType> = {
   [SecretSync.CloudflareWorkers]: SecretSyncPlanType.Regular,
 
   [SecretSync.Zabbix]: SecretSyncPlanType.Regular,
-  [SecretSync.Railway]: SecretSyncPlanType.Regular
+  [SecretSync.Railway]: SecretSyncPlanType.Regular,
+  [SecretSync.Checkly]: SecretSyncPlanType.Regular
 };

backend/src/services/secret-sync/secret-sync-types.ts

@@ -72,6 +72,12 @@ import {
   TAzureKeyVaultSyncListItem,
   TAzureKeyVaultSyncWithCredentials
 } from "./azure-key-vault";
+import {
+  TChecklySync,
+  TChecklySyncInput,
+  TChecklySyncListItem,
+  TChecklySyncWithCredentials
+} from "./checkly/checkly-sync-types";
 import {
   TCloudflarePagesSync,
   TCloudflarePagesSyncInput,
@@ -152,7 +158,8 @@ export type TSecretSync =
   | TCloudflarePagesSync
   | TCloudflareWorkersSync
   | TZabbixSync
-  | TRailwaySync;
+  | TRailwaySync
+  | TChecklySync;
 
 export type TSecretSyncWithCredentials =
   | TAwsParameterStoreSyncWithCredentials
@@ -179,7 +186,8 @@ export type TSecretSyncWithCredentials =
   | TCloudflarePagesSyncWithCredentials
   | TCloudflareWorkersSyncWithCredentials
   | TZabbixSyncWithCredentials
-  | TRailwaySyncWithCredentials;
+  | TRailwaySyncWithCredentials
+  | TChecklySyncWithCredentials;
 
 export type TSecretSyncInput =
   | TAwsParameterStoreSyncInput
@@ -206,7 +214,8 @@ export type TSecretSyncInput =
   | TCloudflarePagesSyncInput
   | TCloudflareWorkersSyncInput
   | TZabbixSyncInput
-  | TRailwaySyncInput;
+  | TRailwaySyncInput
+  | TChecklySyncInput;
 
 export type TSecretSyncListItem =
   | TAwsParameterStoreSyncListItem
@@ -233,7 +242,8 @@ export type TSecretSyncListItem =
   | TCloudflarePagesSyncListItem
   | TCloudflareWorkersSyncListItem
   | TZabbixSyncListItem
-  | TRailwaySyncListItem;
+  | TRailwaySyncListItem
+  | TChecklySyncListItem;
 
 export type TSyncOptionsConfig = {
   canImportSecrets: boolean;