diff --git a/.changeset/calm-countries-worry.md b/.changeset/calm-countries-worry.md
new file mode 100644
index 00000000..02f32877
--- /dev/null
+++ b/.changeset/calm-countries-worry.md
@@ -0,0 +1,5 @@
+---
+"@spear-ai/relay-environment": major
+---
+
+Requests now throw an `HTTPError` when they timeout or when they return a non-200 status code.
diff --git a/.changeset/cyan-spoons-boil.md b/.changeset/cyan-spoons-boil.md
new file mode 100644
index 00000000..cb73744b
--- /dev/null
+++ b/.changeset/cyan-spoons-boil.md
@@ -0,0 +1,5 @@
+---
+"@spear-ai/relay-environment": minor
+---
+
+Added debug logging and the ability to pass in a custom logger.
diff --git a/.changeset/short-eagles-heal.md b/.changeset/short-eagles-heal.md
new file mode 100644
index 00000000..42e826bd
--- /dev/null
+++ b/.changeset/short-eagles-heal.md
@@ -0,0 +1,5 @@
+---
+"@spear-ai/relay-environment": minor
+---
+
+Backed requests with the [ky](https://github.com/sindresorhus/ky) library which adds support for custom hooks. This makes it easier to integrate authentication workflows.
diff --git a/.changeset/short-fans-hide.md b/.changeset/short-fans-hide.md
new file mode 100644
index 00000000..fcf567b7
--- /dev/null
+++ b/.changeset/short-fans-hide.md
@@ -0,0 +1,5 @@
+---
+"@spear-ai/relay-environment": minor
+---
+
+Added request retries and timeouts.
diff --git a/packages/relay-environment/package.json b/packages/relay-environment/package.json
index ff97e030..e4bcc541 100644
--- a/packages/relay-environment/package.json
+++ b/packages/relay-environment/package.json
@@ -8,6 +8,11 @@
     "url": "https://spear.ai"
   },
   "type": "module",
+  "dependencies": {
+    "abslog": "^2.4.4",
+    "ky": "^1.7.4",
+    "uuid": "^11.0.5"
+  },
   "devDependencies": {
     "@spear-ai/eslint-config": "20.0.1",
     "@spear-ai/npm-package-json-lint-config": "3.1.1",
@@ -30,7 +35,7 @@
   "main": "./dist/index.cjs",
   "module": "./dist/index.js",
   "peerDependencies": {
-    "relay-runtime": "^16.2.0"
+    "relay-runtime": "^18.2.0"
   },
   "repository": {
     "type": "git",
diff --git a/packages/relay-environment/src/index.ts b/packages/relay-environment/src/index.ts
index a22c7fdb..85119f0f 100644
--- a/packages/relay-environment/src/index.ts
+++ b/packages/relay-environment/src/index.ts
@@ -1,3 +1,5 @@
+import abslog, { AbstractLoggerOptions, ValidLogger } from "abslog";
+import ky, { Hooks, Options as KyOptions } from "ky";
 import {
   CacheConfig,
   Environment,
@@ -9,35 +11,54 @@ import {
   Store,
   Variables,
 } from "relay-runtime";
+import { v4 as uuidv4 } from "uuid";
 
-const networkFetch = async (
-  request: RequestParameters,
-  variables: Variables,
-  apiUrl: string,
-): Promise<GraphQLResponse> => {
-  const response = await fetch(apiUrl, {
-    body: JSON.stringify({
-      query: request.text,
-      variables,
-    }),
-    headers: {
-      Accept: "application/json",
-      "Content-Type": "application/json",
-    },
-    method: "POST",
-  });
+type PartialKyOptions = Pick<KyOptions, "hooks" | "retry" | "timeout">;
 
-  return (await response.json()) as unknown as GraphQLResponse;
-};
+const makeFetchResponse = (
+  options: PartialKyOptions & {
+    apiUrl: string;
+    cacheSize: number;
+    cacheTtl: number;
+    latencyRetentionCount: number;
+    logger: ValidLogger;
+    recentFetchLatencyList: number[];
+  },
+) => {
+  const {
+    apiUrl,
+    cacheSize,
+    cacheTtl,
+    hooks,
+    latencyRetentionCount,
+    logger,
+    recentFetchLatencyList,
+    ...kyOptions
+  } = options;
 
-const createFetchResponse = (options: {
-  apiUrl: string;
-  cacheSize: number;
-  cacheTtl: number;
-  latencyRetentionCount: number;
-  recentFetchLatencyList: number[];
-}) => {
-  const { apiUrl, cacheSize, cacheTtl, latencyRetentionCount, recentFetchLatencyList } = options;
+  const requestId = uuidv4();
+
+  const mergedHooks: Hooks = {
+    ...hooks,
+    afterResponse: [
+      ...(hooks?.afterResponse ?? []),
+      (request, requestOptions, response) => {
+        logger.debug({ request, requestId, requestOptions, response }, "afterResponse");
+      },
+    ],
+    beforeRequest: [
+      ...(hooks?.beforeRequest ?? []),
+      (request, requestOptions) => {
+        logger.debug({ request, requestId, requestOptions }, "beforeRequest");
+      },
+    ],
+    beforeRetry: [
+      ...(hooks?.beforeRetry ?? []),
+      (retryOptions) => {
+        logger.debug({ requestId, retryOptions }, "beforeRetry");
+      },
+    ],
+  };
 
   const responseCache: QueryResponseCache = new QueryResponseCache({
     size: cacheSize,
@@ -59,7 +80,15 @@ const createFetchResponse = (options: {
     }
 
     const fetchStart = performance.now();
-    const fetchResponse = await networkFetch(parameters, variables, apiUrl);
+    const fetchResponse = await ky.post<GraphQLResponse>(apiUrl, {
+      ...kyOptions,
+      hooks: mergedHooks,
+      json: {
+        query: parameters.text,
+        variables,
+      },
+    });
+    const response = await fetchResponse.json();
     const fetchEnd = performance.now();
 
     recentFetchLatencyList.push(fetchEnd - fetchStart);
@@ -68,7 +97,7 @@ const createFetchResponse = (options: {
       recentFetchLatencyList.shift();
     }
 
-    return fetchResponse;
+    return response;
   };
 };
 
@@ -79,28 +108,40 @@ export type RelayEnvironment = Environment & {
   };
 };
 
-export const createEnvironment = (options: {
-  /** The GraphQL API URL. */
-  apiUrl: string;
-  /** The maximum number of entities to keep inside Relay’s cache. */
-  cacheSize?: number | undefined;
-  /** The maximum time to keep entities inside Relay’s cache. */
-  cacheTtl?: number | undefined;
-  /** The maximum number of latency metrics to retain. */
-  latencyRetentionCount?: number | undefined;
-}): RelayEnvironment => {
-  const { apiUrl, cacheSize = 100, cacheTtl = 5000, latencyRetentionCount = 100 } = options;
+export const createEnvironment = (
+  options: PartialKyOptions & {
+    /** The GraphQL API endpoint URL. */
+    apiUrl: string;
+    /** The maximum number of entities to keep inside Relay's cache. */
+    cacheSize?: number | undefined;
+    /** The maximum time to keep entities inside Relay's cache. */
+    cacheTtl?: number | undefined;
+    /** The maximum number of latency metrics to retain. */
+    latencyRetentionCount?: number | undefined;
+    /** The logger to use when handling requests. */
+    logger?: AbstractLoggerOptions | undefined;
+  },
+): RelayEnvironment => {
+  const {
+    cacheSize = 100,
+    cacheTtl = 5000,
+    latencyRetentionCount = 100,
+    logger: customLogger,
+    ...rest
+  } = options;
   const recentFetchLatencyList: number[] = [];
+  const logger = abslog(customLogger);
 
   return new Environment({
     isServer: false,
     network: Network.create(
-      createFetchResponse({
-        apiUrl,
+      makeFetchResponse({
         cacheSize,
         cacheTtl,
         latencyRetentionCount,
+        logger,
         recentFetchLatencyList,
+        ...rest,
       }),
     ),
     options: { recentFetchLatencyList },
diff --git a/yarn.lock b/yarn.lock
index fd4275d0..8e21d373 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -6210,9 +6210,11 @@ __metadata:
     "@spear-ai/prettier-config": "npm:2.2.0"
     "@spear-ai/tsconfig": "npm:4.0.0"
     "@types/relay-runtime": "npm:18.2.3"
+    abslog: "npm:^2.4.4"
     autoprefixer: "npm:10.4.20"
     eslint: "npm:8.57.1"
     graphql: "npm:16.10.0"
+    ky: "npm:^1.7.4"
     npm-package-json-lint: "npm:8.0.0"
     prettier: "npm:3.4.2"
     react: "npm:19.0.0"
@@ -6221,8 +6223,9 @@ __metadata:
     tailwindcss: "npm:3.4.17"
     tsup: "npm:8.3.5"
     typescript: "npm:5.7.2"
+    uuid: "npm:^11.0.5"
   peerDependencies:
-    relay-runtime: ^16.2.0
+    relay-runtime: ^18.2.0
   languageName: unknown
   linkType: soft
 
@@ -8155,6 +8158,15 @@ __metadata:
   languageName: node
   linkType: hard
 
+"abslog@npm:^2.4.4":
+  version: 2.4.4
+  resolution: "abslog@npm:2.4.4"
+  dependencies:
+    nooplog: "npm:1.0.2"
+  checksum: 10/c1596bd07d1bbbbd6ba18d257c5dc6d88cc8c2b339e1b2a3d203a67de4480ff22fed18511b7927c6fc171becafc09fa1b0c2a904bd18af17d7b5d5e37fcbc2b3
+  languageName: node
+  linkType: hard
+
 "accepts@npm:~1.3.5":
   version: 1.3.8
   resolution: "accepts@npm:1.3.8"
@@ -13499,6 +13511,13 @@ __metadata:
   languageName: node
   linkType: hard
 
+"ky@npm:^1.7.4":
+  version: 1.7.4
+  resolution: "ky@npm:1.7.4"
+  checksum: 10/a5e98434866e4e8e691f76aaa4b4d5bd3abe6527dbb0e853ee37c4475852af6e0cbeef442be31b6824ca7fd3998740492419a45be60352836b9a21a54458f56c
+  languageName: node
+  linkType: hard
+
 "language-subtag-registry@npm:^0.3.20":
   version: 0.3.23
   resolution: "language-subtag-registry@npm:0.3.23"
@@ -14493,6 +14512,13 @@ __metadata:
   languageName: node
   linkType: hard
 
+"nooplog@npm:1.0.2":
+  version: 1.0.2
+  resolution: "nooplog@npm:1.0.2"
+  checksum: 10/ef22d1555d8ec15cea24b223cb3ede48543a9cc90ab73884d413e89c47b842a4e042172478ead252e2f8873fe3cb683694cd546474522b744ae525e5c62ad1eb
+  languageName: node
+  linkType: hard
+
 "nopt@npm:^7.0.0":
   version: 7.2.1
   resolution: "nopt@npm:7.2.1"
@@ -18599,6 +18625,15 @@ __metadata:
   languageName: node
   linkType: hard
 
+"uuid@npm:^11.0.5":
+  version: 11.0.5
+  resolution: "uuid@npm:11.0.5"
+  bin:
+    uuid: dist/esm/bin/uuid
+  checksum: 10/0594ecdff3051e15d4a2c614b4c72e73af373bde0a5d156512353c01156975295d024ae8d7151846d7bd4d22ccd251b16ed51b4318fa71505fb20ad984102dc1
+  languageName: node
+  linkType: hard
+
 "uuid@npm:^9.0.0":
   version: 9.0.1
   resolution: "uuid@npm:9.0.1"