diff --git a/src/commands/env-active.ts b/src/commands/env-active.ts
new file mode 100644
index 0000000..eaa5e05
--- /dev/null
+++ b/src/commands/env-active.ts
@@ -0,0 +1,13 @@
+import { getEnvironment } from "../environments";
+import { createCommand, type CommandConfig } from "../lib/command";
+import { getRepositoryName } from "../project";
+
+const config = {
+	name: "prismic env active",
+	description: "Print the active environment.",
+} satisfies CommandConfig;
+
+export default createCommand(config, async () => {
+	const activeEnvironment = (await getEnvironment()) ?? (await getRepositoryName());
+	console.info(activeEnvironment);
+});
diff --git a/src/commands/env-list.ts b/src/commands/env-list.ts
new file mode 100644
index 0000000..34dba52
--- /dev/null
+++ b/src/commands/env-list.ts
@@ -0,0 +1,44 @@
+import { getHost, getToken } from "../auth";
+import { getEnvironment, getUserEnvironments } from "../environments";
+import { createCommand, type CommandConfig } from "../lib/command";
+import { stringify } from "../lib/json";
+import { formatTable } from "../lib/string";
+import { getRepositoryName } from "../project";
+
+const config = {
+	name: "prismic env list",
+	description: "List the environments available for the project.",
+	options: {
+		json: { type: "boolean", description: "Output as JSON" },
+		repo: { type: "string", short: "r", description: "Repository domain" },
+	},
+} satisfies CommandConfig;
+
+export default createCommand(config, async ({ values }) => {
+	const { json, repo = await getRepositoryName() } = values;
+
+	const token = await getToken();
+	const host = await getHost();
+	const environments = await getUserEnvironments({ repo, token, host });
+
+	const activeEnvironment = (await getEnvironment()) ?? (await getRepositoryName());
+
+	if (json) {
+		const results = environments.map((environment) => ({
+			domain: environment.domain,
+			kind: environment.kind,
+			active: environment.domain === activeEnvironment,
+		}));
+		console.info(stringify(results));
+		return;
+	}
+
+	const rows = environments.map((environment) => {
+		return [
+			environment.domain,
+			environment.kind,
+			environment.domain === activeEnvironment ? "*" : "",
+		];
+	});
+	console.info(formatTable(rows, { headers: ["DOMAIN", "KIND", "ACTIVE"] }));
+});
diff --git a/src/commands/env-set.ts b/src/commands/env-set.ts
new file mode 100644
index 0000000..4cf1334
--- /dev/null
+++ b/src/commands/env-set.ts
@@ -0,0 +1,33 @@
+import { getHost, getToken } from "../auth";
+import { getUserEnvironments, InvalidEnvironmentError, saveEnvironment } from "../environments";
+import { createCommand, type CommandConfig } from "../lib/command";
+import { getRepositoryName } from "../project";
+
+const config = {
+	name: "prismic env set",
+	description: "Set the active environment.",
+	positionals: {
+		env: { description: "Environment domain", required: true },
+	},
+} satisfies CommandConfig;
+
+export default createCommand(config, async ({ positionals }) => {
+	const [env] = positionals;
+
+	const repo = await getRepositoryName();
+	const token = await getToken();
+	const host = await getHost();
+	const environments = await getUserEnvironments({ repo, token, host });
+
+	const validEnvironment = environments.some((environment) => environment.domain === env);
+	if (!validEnvironment) throw new InvalidEnvironmentError(env, environments, repo);
+
+	if (env === repo) {
+		await saveEnvironment(undefined);
+		console.info(`Reset to the production environment "${repo}".`);
+		return;
+	}
+
+	await saveEnvironment(env);
+	console.info(`Set the active environment to "${env}".`);
+});
diff --git a/src/commands/env-unset.ts b/src/commands/env-unset.ts
new file mode 100644
index 0000000..2e1f167
--- /dev/null
+++ b/src/commands/env-unset.ts
@@ -0,0 +1,14 @@
+import { saveEnvironment } from "../environments";
+import { createCommand, type CommandConfig } from "../lib/command";
+import { getRepositoryName } from "../project";
+
+const config = {
+	name: "prismic env unset",
+	description: "Reset the active environment to the production environment.",
+} satisfies CommandConfig;
+
+export default createCommand(config, async () => {
+	const repo = await getRepositoryName();
+	await saveEnvironment(undefined);
+	console.info(`Reset to the production environment "${repo}".`);
+});
diff --git a/src/commands/env.ts b/src/commands/env.ts
new file mode 100644
index 0000000..d2e75f4
--- /dev/null
+++ b/src/commands/env.ts
@@ -0,0 +1,28 @@
+import { createCommandRouter } from "../lib/command";
+import envActive from "./env-active";
+import envList from "./env-list";
+import envSet from "./env-set";
+import envUnset from "./env-unset";
+
+export default createCommandRouter({
+	name: "prismic env",
+	description: "Manage the active environment for a Prismic project.",
+	commands: {
+		set: {
+			handler: envSet,
+			description: "Set the active environment",
+		},
+		unset: {
+			handler: envUnset,
+			description: "Reset to the production environment",
+		},
+		active: {
+			handler: envActive,
+			description: "Print the active environment",
+		},
+		list: {
+			handler: envList,
+			description: "List environments",
+		},
+	},
+});
diff --git a/src/config.ts b/src/config.ts
index 84c80fa..b877968 100644
--- a/src/config.ts
+++ b/src/config.ts
@@ -4,4 +4,5 @@ import { getConfigDir } from "./lib/config-dir";
 export const CONFIG_DIR = getConfigDir("prismic", env.PRISMIC_CONFIG_DIR);
 
 export const CREDENTIALS_PATH = new URL("credentials.json", CONFIG_DIR);
+export const ENVIRONMENTS_PATH = new URL("environments.json", CONFIG_DIR);
 export const UPDATE_NOTIFIER_STATE_PATH = new URL("update-notifier.json", CONFIG_DIR);
diff --git a/src/environments.ts b/src/environments.ts
index 86de69f..3ed8a75 100644
--- a/src/environments.ts
+++ b/src/environments.ts
@@ -1,26 +1,70 @@
+import { readFile } from "node:fs/promises";
+import * as z from "zod/mini";
+
 import { type Environment, getEnvironments } from "./clients/core";
 import { getProfile } from "./clients/user";
+import { ENVIRONMENTS_PATH } from "./config";
+import { writeFileRecursive } from "./lib/file";
+import { stringify } from "./lib/json";
+import { findProjectRoot } from "./project";
 
-export async function resolveEnvironment(
-	env: string,
-	config: { repo: string; token: string | undefined; host: string },
-): Promise<string> {
-	const { repo, token, host } = config;
+const EnvironmentsSchema = z.partialRecord(z.string(), z.string());
+type Environments = z.infer<typeof EnvironmentsSchema>;
 
+export async function getEnvironment(): Promise<string | undefined> {
+	const projectRoot = await findProjectRoot();
+	const environments = await readEnvironments();
+	return environments[projectRoot.toString()];
+}
+
+export async function saveEnvironment(environment: string | undefined): Promise<void> {
+	const projectRoot = await findProjectRoot();
+	const environments = await readEnvironments();
+	if (environment) {
+		environments[projectRoot.toString()] = environment;
+	} else {
+		delete environments[projectRoot.toString()];
+	}
+	await writeFileRecursive(ENVIRONMENTS_PATH, stringify(environments));
+}
+
+async function readEnvironments(): Promise<Environments> {
+	try {
+		const contents = await readFile(ENVIRONMENTS_PATH, "utf-8");
+		const json = JSON.parse(contents);
+		return z.parse(EnvironmentsSchema, json);
+	} catch {
+		return {};
+	}
+}
+
+export async function getUserEnvironments(config: {
+	repo: string;
+	token: string | undefined;
+	host: string;
+}): Promise<Environment[]> {
+	const { repo, token, host } = config;
 	const [profile, environments] = await Promise.all([
 		getProfile({ token, host }),
 		getEnvironments({ repo, token, host }),
 	]);
-
-	const availableEnvironments = environments.filter(
+	const userEnvironments = environments.filter(
 		(environment) =>
 			(environment.kind === "prod" || environment.kind === "stage") &&
 			environment.users.some((user) => user.id === profile.shortId),
 	);
+	return userEnvironments;
+}
+
+export async function resolveEnvironment(
+	env: string,
+	config: { repo: string; token: string | undefined; host: string },
+): Promise<string> {
+	const availableEnvironments = await getUserEnvironments(config);
 	const match = availableEnvironments.find((environment) => environment.domain === env);
 	if (match) return match.domain;
 
-	throw new InvalidEnvironmentError(env, availableEnvironments, repo);
+	throw new InvalidEnvironmentError(env, availableEnvironments, config.repo);
 }
 
 export class InvalidEnvironmentError extends Error {
diff --git a/src/index.ts b/src/index.ts
index 8e7c819..d22a37f 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -7,6 +7,7 @@ import { getAdapter, NoSupportedFrameworkError } from "./adapters";
 import { cleanupLegacyAuthFile, getHost, getToken, spawnTokenRefresh } from "./auth";
 import { getProfile } from "./clients/user";
 import docs from "./commands/docs";
+import envCommand from "./commands/env";
 import field from "./commands/field";
 import gen from "./commands/gen";
 import init from "./commands/init";
@@ -94,6 +95,10 @@ const router = createCommandRouter({
 			handler: status,
 			description: "Show local vs remote model differences",
 		},
+		env: {
+			handler: envCommand,
+			description: "Manage the active environment",
+		},
 		locale: {
 			handler: locale,
 			description: "Manage locales",
diff --git a/test/env-active.test.ts b/test/env-active.test.ts
new file mode 100644
index 0000000..b90c6ab
--- /dev/null
+++ b/test/env-active.test.ts
@@ -0,0 +1,26 @@
+import { writeFile } from "node:fs/promises";
+
+import { it } from "./it";
+
+it("supports --help", async ({ expect, prismic }) => {
+	const { stdout, exitCode } = await prismic("env", ["active", "--help"]);
+	expect(exitCode).toBe(0);
+	expect(stdout).toContain("prismic env active [options]");
+});
+
+it("prints a configured environment", async ({ expect, prismic, home, project }) => {
+	await writeFile(
+		new URL(".config/prismic/environments.json", home),
+		JSON.stringify({ [project.toString()]: "my-stage-env" }),
+	);
+
+	const { stdout, exitCode } = await prismic("env", ["active"]);
+	expect(exitCode).toBe(0);
+	expect(stdout).toContain("my-stage-env");
+});
+
+it("defaults to the production environment", async ({ expect, prismic, repo }) => {
+	const { stdout, exitCode } = await prismic("env", ["active"]);
+	expect(exitCode).toBe(0);
+	expect(stdout).toContain(repo);
+});
diff --git a/test/env-list.test.ts b/test/env-list.test.ts
new file mode 100644
index 0000000..2247bf6
--- /dev/null
+++ b/test/env-list.test.ts
@@ -0,0 +1,25 @@
+import { it } from "./it";
+
+it("supports --help", async ({ expect, prismic }) => {
+	const { stdout, exitCode } = await prismic("env", ["list", "--help"]);
+	expect(exitCode).toBe(0);
+	expect(stdout).toContain("prismic env list [options]");
+});
+
+it("lists environments", async ({ expect, prismic, repo }) => {
+	const { stdout, exitCode } = await prismic("env", ["list"]);
+	expect(exitCode).toBe(0);
+	expect(stdout).toContain(repo);
+});
+
+it("lists environments as JSON", async ({ expect, prismic, repo }) => {
+	const { stdout, exitCode } = await prismic("env", ["list", "--json"]);
+	expect(exitCode).toBe(0);
+	const parsed = JSON.parse(stdout);
+	expect(parsed).toEqual(
+		expect.arrayContaining([expect.objectContaining({ domain: repo, kind: "prod" })]),
+	);
+});
+
+// TODO: test listing with a stage environment present and marked active once we
+// can create environments on the test repo.
diff --git a/test/env-set.test.ts b/test/env-set.test.ts
new file mode 100644
index 0000000..3d2f2be
--- /dev/null
+++ b/test/env-set.test.ts
@@ -0,0 +1,34 @@
+import { readFile, writeFile } from "node:fs/promises";
+
+import { it } from "./it";
+
+it("supports --help", async ({ expect, prismic }) => {
+	const { stdout, exitCode } = await prismic("env", ["set", "--help"]);
+	expect(exitCode).toBe(0);
+	expect(stdout).toContain("prismic env set <env> [options]");
+});
+
+// TODO: test setting the active environment to a stage environment (the common
+// happy path) once we can create environments on the test repo.
+
+it("resets to the production environment", async ({ expect, prismic, repo, home, project }) => {
+	await writeFile(
+		new URL(".config/prismic/environments.json", home),
+		JSON.stringify({ [project.toString()]: "my-stage-env" }),
+	);
+
+	const { stdout, exitCode } = await prismic("env", ["set", repo]);
+	expect(exitCode).toBe(0);
+	expect(stdout).toContain(`Reset to the production environment "${repo}".`);
+
+	const after = await readFile(new URL(".config/prismic/environments.json", home), "utf8").catch(
+		() => "{}",
+	);
+	expect(after).not.toContain("my-stage-env");
+});
+
+it("errors on an invalid environment", async ({ expect, prismic, repo }) => {
+	const { stderr, exitCode } = await prismic("env", ["set", "not-a-real-env"]);
+	expect(exitCode).toBe(1);
+	expect(stderr).toContain(repo);
+});
diff --git a/test/env-unset.test.ts b/test/env-unset.test.ts
new file mode 100644
index 0000000..2d46a8a
--- /dev/null
+++ b/test/env-unset.test.ts
@@ -0,0 +1,25 @@
+import { readFile, writeFile } from "node:fs/promises";
+
+import { it } from "./it";
+
+it("supports --help", async ({ expect, prismic }) => {
+	const { stdout, exitCode } = await prismic("env", ["unset", "--help"]);
+	expect(exitCode).toBe(0);
+	expect(stdout).toContain("prismic env unset [options]");
+});
+
+it("resets to the production environment", async ({ expect, prismic, repo, home, project }) => {
+	await writeFile(
+		new URL(".config/prismic/environments.json", home),
+		JSON.stringify({ [project.toString()]: "my-stage-env" }),
+	);
+
+	const { stdout, exitCode } = await prismic("env", ["unset"]);
+	expect(exitCode).toBe(0);
+	expect(stdout).toContain(`Reset to the production environment "${repo}".`);
+
+	const after = await readFile(new URL(".config/prismic/environments.json", home), "utf8").catch(
+		() => "{}",
+	);
+	expect(after).not.toContain("my-stage-env");
+});
diff --git a/test/env.test.ts b/test/env.test.ts
new file mode 100644
index 0000000..1af8902
--- /dev/null
+++ b/test/env.test.ts
@@ -0,0 +1,13 @@
+import { it } from "./it";
+
+it("prints help by default", async ({ expect, prismic }) => {
+	const { stdout, exitCode } = await prismic("env");
+	expect(exitCode).toBe(0);
+	expect(stdout).toContain("prismic env <command> [options]");
+});
+
+it("supports --help", async ({ expect, prismic }) => {
+	const { stdout, exitCode } = await prismic("env", ["--help"]);
+	expect(exitCode).toBe(0);
+	expect(stdout).toContain("prismic env <command> [options]");
+});
diff --git a/test/it.ts b/test/it.ts
index f071994..8dccbdc 100644
--- a/test/it.ts
+++ b/test/it.ts
@@ -2,7 +2,7 @@ import type { CustomType, SharedSlice } from "@prismicio/types-internal/lib/cust
 import type { Result } from "tinyexec";
 
 import { pascalCase } from "change-case";
-import { mkdir, mkdtemp, readdir, readFile, rm, writeFile } from "node:fs/promises";
+import { mkdir, mkdtemp, readdir, readFile, realpath, rm, writeFile } from "node:fs/promises";
 import { tmpdir } from "node:os";
 import { join } from "node:path";
 import { fileURLToPath, pathToFileURL } from "node:url";
@@ -33,8 +33,8 @@ export const it = test.extend<Fixtures>({
 	},
 	// oxlint-disable-next-line no-empty-pattern
 	home: async ({}, use) => {
-		const dir = await mkdtemp(join(tmpdir(), "prismic-test-"));
-		await use(pathToFileURL(dir + "/"));
+		const dir = await realpath(await mkdtemp(join(tmpdir(), "prismic-test-")));
+		await use(pathToFileURL(`${dir}/`));
 		try {
 			await rm(dir, { recursive: true, force: true });
 		} catch {