diff --git a/.env.example b/.env.example
index 5ffe6ea8..184a77e2 100644
--- a/.env.example
+++ b/.env.example
@@ -7,3 +7,6 @@ IPFS_GATEWAY=
 SENTRY_DSN=
 STORAGE_DIR=./data
 CACHE_DIR=./.cache
+DEPLOYMENT_ENVIRONMENT=local
+PORT=8080
+LOG_LEVEL=debug
diff --git a/fly.production.toml b/fly.production.toml
index 1e7c16d4..bb06baa6 100644
--- a/fly.production.toml
+++ b/fly.production.toml
@@ -8,6 +8,8 @@ kill_timeout = 5
 
 [env]
   PORT = "8080"
+  DEPLOYMENT_ENVIRONMENT = "production"
+  LOG_LEVEL = "info"
   STORAGE_DIR = "/mnt/indexer/data"
   CACHE_DIR = "/mnt/indexer/cache"
 
diff --git a/fly.staging.toml b/fly.staging.toml
index a168767e..d5f68793 100644
--- a/fly.staging.toml
+++ b/fly.staging.toml
@@ -8,6 +8,8 @@ kill_timeout = 5
 
 [env]
   PORT = "8080"
+  DEPLOYMENT_ENVIRONMENT = "staging"
+  LOG_LEVEL = "debug"
   STORAGE_DIR = "/mnt/indexer/data"
   CACHE_DIR = "/mnt/indexer/cache"
 
diff --git a/package-lock.json b/package-lock.json
index 5c370001..26e49a5d 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -26,7 +26,8 @@
         "pluralistic": "github:gitcoinco/pluralistic.js#644d14fff65100f005d7afc18799b0f99b72ae24",
         "serve-index": "^1.9.1",
         "statuses-bitmap": "github:gitcoinco/statuses-bitmap#3d8fd370f209ccbaffd3781cf2b6d2895237c21c",
-        "write-file-atomic": "^5.0.1"
+        "write-file-atomic": "^5.0.1",
+        "zod": "^3.21.4"
       },
       "devDependencies": {
         "@types/cors": "^2.8.13",
@@ -7026,6 +7027,14 @@
       "funding": {
         "url": "https://github.com/sponsors/sindresorhus"
       }
+    },
+    "node_modules/zod": {
+      "version": "3.21.4",
+      "resolved": "https://registry.npmjs.org/zod/-/zod-3.21.4.tgz",
+      "integrity": "sha512-m46AKbrzKVzOzs/DZgVnG5H55N1sv1M8qZU3A8RIKbs3mrACDNeIOeilDymVb2HdmP8uwshOCF4uJ8uM9rCqJw==",
+      "funding": {
+        "url": "https://github.com/sponsors/colinhacks"
+      }
     }
   },
   "dependencies": {
@@ -11608,6 +11617,11 @@
     },
     "yocto-queue": {
       "version": "0.1.0"
+    },
+    "zod": {
+      "version": "3.21.4",
+      "resolved": "https://registry.npmjs.org/zod/-/zod-3.21.4.tgz",
+      "integrity": "sha512-m46AKbrzKVzOzs/DZgVnG5H55N1sv1M8qZU3A8RIKbs3mrACDNeIOeilDymVb2HdmP8uwshOCF4uJ8uM9rCqJw=="
     }
   }
 }
diff --git a/package.json b/package.json
index f3b2afa3..3950aa9f 100644
--- a/package.json
+++ b/package.json
@@ -41,7 +41,8 @@
     "pluralistic": "github:gitcoinco/pluralistic.js#644d14fff65100f005d7afc18799b0f99b72ae24",
     "serve-index": "^1.9.1",
     "statuses-bitmap": "github:gitcoinco/statuses-bitmap#3d8fd370f209ccbaffd3781cf2b6d2895237c21c",
-    "write-file-atomic": "^5.0.1"
+    "write-file-atomic": "^5.0.1",
+    "zod": "^3.21.4"
   },
   "devDependencies": {
     "@types/cors": "^2.8.13",
diff --git a/src/config.ts b/src/config.ts
index acb58eb6..30166f19 100644
--- a/src/config.ts
+++ b/src/config.ts
@@ -1,7 +1,7 @@
 import "dotenv/config";
 import { parseArgs } from "node:util";
 import { ToBlock } from "chainsauce";
-import path from "node:path";
+import { z } from "zod";
 
 type ChainId = number;
 
@@ -352,7 +352,6 @@ export type Config = {
   passportApiKey: string;
   cacheDir: string | null;
   logLevel: "trace" | "debug" | "info" | "warn" | "error";
-  clear: boolean;
   ipfsGateway: string;
   coingeckoApiKey: string | null;
   coingeckoApiUrl: string;
@@ -360,27 +359,39 @@ export type Config = {
   runOnce: boolean;
   apiHttpPort: number;
   sentryDsn: string | null;
+  deploymentEnvironment: "local" | "development" | "staging" | "production";
 };
 
 export function getConfig(): Config {
-  const apiHttpPort = Number(process.env.PORT || "4000");
+  const apiHttpPort = z.coerce.number().parse(process.env.PORT);
 
-  if (!process.env.PASSPORT_SCORER_ID) {
-    throw new Error("PASSPORT_SCORER_ID is not set");
-  }
-  if (!process.env.PASSPORT_API_KEY) {
-    throw new Error("PASSPORT_SCORER_ID is not set");
-  }
-  const passportScorerId = process.env.PASSPORT_SCORER_ID;
-  const passportApiKey = process.env.PASSPORT_API_KEY;
+  const deploymentEnvironment = z
+    .union([
+      z.literal("local"),
+      z.literal("development"),
+      z.literal("staging"),
+      z.literal("production"),
+    ])
+    .parse(process.env.DEPLOYMENT_ENVIRONMENT);
+
+  const passportScorerId = z.string().parse(process.env.PASSPORT_SCORER_ID);
+
+  const passportApiKey = z.string().parse(process.env.PASSPORT_API_KEY);
 
-  const coingeckoApiKey = process.env.COINGECKO_API_KEY ?? null;
+  const coingeckoApiKey = z
+    .union([z.string(), z.null()])
+    .default(null)
+    .parse(process.env.COINGECKO_API_KEY);
 
-  const coingeckoApiUrl = process.env.COINGECKO_API_KEY
-    ? "https://pro-api.coingecko.com/api/v3/"
-    : "https://api.coingecko.com/api/v3";
+  const coingeckoApiUrl =
+    coingeckoApiKey === null
+      ? "https://api.coingecko.com/api/v3"
+      : "https://pro-api.coingecko.com/api/v3/";
 
-  const storageDir = path.join(process.env.STORAGE_DIR || "./data");
+  const storageDir = z
+    .string()
+    .default("./data")
+    .parse(process.env.STORAGE_DIR);
 
   const { values: args } = parseArgs({
     options: {
@@ -399,9 +410,6 @@ export function getConfig(): Config {
       "run-once": {
         type: "boolean",
       },
-      clear: {
-        type: "boolean",
-      },
       "no-cache": {
         type: "boolean",
       },
@@ -420,37 +428,40 @@ export function getConfig(): Config {
     return c;
   });
 
-  const toBlock =
-    "to-block" in args
-      ? args["to-block"] === "latest"
-        ? ("latest" as const)
-        : Number(args["to-block"])
-      : ("latest" as const);
+  const toBlock = z
+    .union([z.coerce.number(), z.literal("latest")])
+    .default("latest")
+    .parse(args["to-block"]);
 
-  const fromBlock = "from-block" in args ? Number(args["from-block"]) : 0;
-
-  const logLevel = args["log-level"] ?? "info";
-  if (
-    logLevel !== "trace" &&
-    logLevel !== "debug" &&
-    logLevel !== "info" &&
-    logLevel !== "warn" &&
-    logLevel !== "error"
-  ) {
-    throw new Error(`Invalid log level: ${logLevel}`);
-  }
+  const fromBlock = z.coerce.number().default(0).parse(args["from-block"]);
 
-  const clear = args.clear ?? false;
+  const logLevel = z
+    .union([
+      z.literal("trace"),
+      z.literal("debug"),
+      z.literal("info"),
+      z.literal("warn"),
+      z.literal("error"),
+    ])
+    .default("info")
+    .parse(process.env.LOG_LEVEL);
 
-  const runOnce = args["run-once"] ?? false;
+  const runOnce = z.boolean().default(false).parse(args["run-once"]);
 
-  const cacheDir = args["no-cache"]
-    ? null
-    : process.env.CACHE_DIR || "./.cache";
+  const cacheDir = z
+    .union([z.string(), z.null()])
+    .default("./.cache")
+    .parse(process.env.CACHE_DIR);
 
-  const ipfsGateway = process.env.IPFS_GATEWAY || "https://cloudflare-ipfs.com";
+  const ipfsGateway = z
+    .string()
+    .default("https://cloudflare-ipfs.com")
+    .parse(process.env.IPFS_GATEWAY);
 
-  const sentryDsn = process.env.SENTRY_DSN ?? null;
+  const sentryDsn = z
+    .union([z.string(), z.null()])
+    .default(null)
+    .parse(process.env.SENTRY_DSN);
 
   return {
     sentryDsn,
@@ -463,10 +474,10 @@ export function getConfig(): Config {
     cacheDir,
     logLevel,
     runOnce,
-    clear,
     ipfsGateway,
     passportApiKey,
     passportScorerId,
     apiHttpPort,
+    deploymentEnvironment,
   };
 }
diff --git a/src/index.ts b/src/index.ts
index 7378e815..657992cb 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -32,10 +32,12 @@ async function main(): Promise<void> {
     });
   }
 
-  const baseLogger = pino({ level: "trace" }).child({
-    service: "indexer-staging", // XXX TODO grab environment name from env variable
+  const baseLogger = pino({ level: config.logLevel }).child({
+    service: `indexer-${config.deploymentEnvironment}`,
   });
 
+  // Promise will be resolved once the catchup is done. Afterwards, services
+  // will still be in listen-and-update mode
   await Promise.all([
     catchupAndWatchPassport({
       ...config,