diff --git a/src/bot.ts b/src/bot.ts
index b50ee85..09184e5 100644
--- a/src/bot.ts
+++ b/src/bot.ts
@@ -1,6 +1,5 @@
 import {
 	CacheType,
-	ChatInputCommandInteraction,
 	Client,
 	EmbedBuilder,
 	GatewayIntentBits,
@@ -11,9 +10,6 @@ import {
 	SlashCommandStringOption,
 } from "npm:discord.js@14.14.1";
 import { channel, log_from, SimpleResult, split_promise } from "./utils.ts";
-import { RuleSet } from "./rules.ts";
-import { SlashCommandSubcommandBuilder } from "npm:discord.js@14.14.1";
-import { SlashCommandRoleOption } from "npm:discord.js@14.14.1";
 const log = log_from(import.meta.url);
 
 /**
@@ -23,16 +19,14 @@ export class EpitlsBot {
 	private bot;
 	private token;
 	private rest;
-	private rules;
 	private assoc_channel;
 
-	public constructor(bot_token: string, rules: RuleSet) {
+	public constructor(bot_token: string) {
 		this.token = bot_token;
 		const intents = [GatewayIntentBits.Guilds];
 		this.bot = new Client({ intents });
 		this.bot.on("interactionCreate", (interaction) => this.handle_interaction(interaction));
 		this.rest = new REST().setToken(bot_token);
-		this.rules = rules;
 		this.assoc_channel = channel<
 			{ cri_login: string; discord_user_id: string; callback: (success: SimpleResult) => void }
 		>();
@@ -54,16 +48,12 @@ export class EpitlsBot {
 	 * Assigns a discord role to a discord user.
 	 */
 	public async assign_role(user_id: string, guild_id: string, role_id: string) {
-		try {
-			const guild = await this.bot.guilds.fetch(guild_id);
-			const member = await guild.members.fetch({ user: user_id });
-			const role = await guild.roles.fetch(role_id);
-			if (role === null) return console.error("Role", role_id, "not found in guild", guild_id);
-			member.roles.add(role_id);
-			log(`Assigned role '${role.name}' to user '${member.displayName}'.`);
-		} catch (_) {
-			//
-		}
+		const guild = await this.bot.guilds.fetch(guild_id);
+		const member = await guild.members.fetch({ user: user_id });
+		const role = await guild.roles.fetch(role_id);
+		if (role === null) return console.error("Role", role_id, "not found in guild", guild_id);
+		member.roles.add(role_id);
+		log(`Assigned role '${role.name}' to user '${member.displayName}'.`);
 	}
 
 	/**
@@ -90,78 +80,30 @@ export class EpitlsBot {
 	}
 
 	private async register_commands() {
-		const assoc_cmd = new SlashCommandBuilder()
+		const cmd = new SlashCommandBuilder()
 			.setName("associate")
 			.setDescription("Associates a cri account to your discord account.")
 			.addStringOption(
 				new SlashCommandStringOption()
 					.setName("cri_email")
-					.setDescription("par exemple, claude.nougaro@epita.fr")
+					.setDescription("claude.nougaro@epita.fr")
 					.setRequired(true),
 			).toJSON();
 
-		const rule_cmd = new SlashCommandBuilder()
-			.setName("rule")
-			.setDescription("Gestion des règles d'associations groupes cri / rôles.")
-			.setDefaultMemberPermissions(0x0000000000000008n)
-			.addSubcommand(
-				new SlashCommandSubcommandBuilder()
-					.setName("list")
-					.setDescription("Liste les règles d'association."),
-			)
-			.addSubcommand(
-				new SlashCommandSubcommandBuilder()
-					.setName("add")
-					.setDescription("Ajoute une règle d'association.")
-					.addStringOption(
-						new SlashCommandStringOption()
-							.setName("group")
-							.setDescription("Groupe CRI à associer.")
-							.setRequired(true),
-					)
-					.addRoleOption(
-						new SlashCommandRoleOption()
-							.setName("role")
-							.setDescription("Role à assigner.")
-							.setRequired(true),
-					),
-			)
-			.addSubcommand(
-				new SlashCommandSubcommandBuilder()
-					.setName("remove")
-					.setDescription("Retire une règle d'association.")
-					.addStringOption(
-						new SlashCommandStringOption()
-							.setName("group")
-							.setDescription("Groupe CRI à retirer.")
-							.setRequired(true),
-					),
-			)
-			.toJSON();
-
 		for (const guild_id of this.bot.guilds.cache.keys()) {
 			await this.rest.put(
 				Routes.applicationGuildCommands(this.bot.application!.id, guild_id),
-				{ body: [assoc_cmd, rule_cmd] },
+				{ body: [cmd] },
 			);
 		}
 	}
 
 	private async handle_interaction(interaction: Interaction<CacheType>) {
 		if (!interaction.isChatInputCommand()) return;
-		if (interaction.commandName === "associate") await this.handle_command_associate(interaction);
-		if (interaction.commandName === "rule") {
-			const subcommand = interaction.options.getSubcommand();
-			if (subcommand === "list") await this.handle_command_rule_list(interaction);
-			if (subcommand === "add") await this.handle_command_rule_add(interaction);
-			if (subcommand === "remove") await this.handle_command_rule_remove(interaction);
-		}
-	}
-
-	private async handle_command_associate(interaction: ChatInputCommandInteraction<CacheType>) {
+		if (interaction.commandName != "associate") return;
 		const email = interaction.options.getString("cri_email")!;
 		if (!email.endsWith("@epita.fr")) {
-			await interaction.reply(message_command_response_assoc_error("invalid cri email " + email));
+			await interaction.reply(message_command_response_error("invalid cri email " + email));
 			return;
 		}
 		const [cri_login] = email.split("@epita.fr");
@@ -169,70 +111,17 @@ export class EpitlsBot {
 		const { promise, resolver } = split_promise<SimpleResult>();
 
 		this.assoc_channel.send({ cri_login, discord_user_id, callback: resolver });
-		await interaction.reply(message_command_response_assoc_pending(email));
+		await interaction.reply(message_command_response_sending_email(email));
 		log(`Started verification for discord id '${discord_user_id}' with cri login '${cri_login}'.`);
 		const result = await promise;
-		if (result === true) interaction.editReply(message_command_response_assoc_success());
-		else interaction.editReply(message_command_response_assoc_error(result));
-	}
-
-	private async handle_command_rule_list(interaction: ChatInputCommandInteraction<CacheType>) {
-		const guild_id = interaction.guildId;
-		if (guild_id === null) {
-			await interaction.reply(
-				message_command_response_list_error("Cette commande peut être exécutée uniquement sur un serveur."),
-			);
-			return;
-		}
-		const rules = [] as GuildRule[];
-		for (const { group_id, role_id } of this.rules.roles_for_guild(guild_id)) {
-			const role = await interaction.guild!.roles.fetch(role_id);
-			const role_name = role?.name ?? "<DELETED>";
-			rules.push({ group_id, role_name });
-		}
-		await interaction.reply(message_command_response_rule_list_success(rules));
-	}
-
-	private async handle_command_rule_add(interaction: ChatInputCommandInteraction<CacheType>) {
-		const guild_id = interaction.guildId;
-		if (guild_id === null) {
-			await interaction.reply(
-				message_command_response_list_error("Cette commande peut être exécutée uniquement sur un serveur."),
-			);
-			return;
-		}
-		const group_id = interaction.options.getString("group", true);
-		const role = interaction.options.getRole("role", true);
-		// TODO : test if role exists
-		const role_id = role.id;
-		const role_name = role.name;
-		await this.rules.append_rule(group_id, { guild_id, role_id });
-		await interaction.reply(message_command_response_rule_add_success({ group_id, role_name }));
-	}
-
-	private async handle_command_rule_remove(interaction: ChatInputCommandInteraction<CacheType>) {
-		const guild_id = interaction.guildId;
-		if (guild_id === null) {
-			await interaction.reply(
-				message_command_response_list_error("Cette commande peut être exécutée uniquement sur un serveur."),
-			);
-			return;
-		}
-		const group_id = interaction.options.getString("group", true);
-		const removed = await this.rules.remove_rules(group_id, guild_id);
-		const rules = [] as GuildRule[];
-		for (const { group_id, target_role: { role_id } } of removed) {
-			const role = await interaction.guild!.roles.fetch(role_id);
-			const role_name = role?.name ?? "<DELETED>";
-			rules.push({ group_id, role_name });
-		}
-		await interaction.reply(message_command_response_rule_remove_success(rules));
+		if (result === true) interaction.editReply(message_command_response_success());
+		else interaction.editReply(message_command_response_error(result));
 	}
 }
 
-function message_command_response_assoc_pending(email: string) {
+function message_command_response_sending_email(email: string) {
 	const embed = new EmbedBuilder()
-		.setTitle("`🟡`| Association")
+		.setTitle("`🟡`| Vérification")
 		.setDescription(`
 Un lien de vérification a été envoyé par e-mail à \`${email}\`.
 Le lien expirera dans 5 minutes.
@@ -241,53 +130,16 @@ Le lien expirera dans 5 minutes.
 	return { embeds: [embed] };
 }
 
-function message_command_response_assoc_error(msg: string) {
+function message_command_response_error(msg: string) {
 	const embed = new EmbedBuilder()
-		.setTitle("`❌`| Association")
-		.setDescription(`Échec de l'association :\n\`${msg}\``);
+		.setTitle("`❌`| Vérification")
+		.setDescription(`Échec de la vérification :\n\`${msg}\``);
 	return { embeds: [embed] };
 }
 
-function message_command_response_assoc_success() {
+function message_command_response_success() {
 	const embed = new EmbedBuilder()
-		.setTitle("`✅`| Association")
+		.setTitle("`✅`| Vérification")
 		.setDescription("Votre e-mail CRI a bien été associé à ce compte Discord.");
 	return { embeds: [embed] };
 }
-
-function message_command_response_list_error(msg: string) {
-	const embed = new EmbedBuilder()
-		.setTitle("`❌`| Liste des règles")
-		.setDescription(`Échec :\n\`${msg}\``);
-	return { embeds: [embed] };
-}
-
-type GuildRule = { group_id: string; role_name: string };
-function message_command_response_rule_list_success(rules: GuildRule[]) {
-	const rule_list = rules.map((r) => `- \`${r.group_id}\` → \`@${r.role_name}\``).join("\n");
-	const embed = new EmbedBuilder()
-		.setTitle("`📚️`| Liste des règles")
-		.setDescription(`Règles d'associations groupe / rôle.
-${rule_list}
-`);
-	return { embeds: [embed] };
-}
-
-function message_command_response_rule_add_success(rule: GuildRule) {
-	const embed = new EmbedBuilder()
-		.setTitle("`✅`| Règle ajouté")
-		.setDescription(`Règle d'association ajoutée :
-- \`${rule.group_id}\` → \`@${rule.role_name}\`
-`);
-	return { embeds: [embed] };
-}
-
-function message_command_response_rule_remove_success(rules: GuildRule[]) {
-	const rule_list = rules.map((r) => `- \`${r.group_id}\` → \`@${r.role_name}\``).join("\n");
-	const embed = new EmbedBuilder()
-		.setTitle("`✅`| Règle ajouté")
-		.setDescription(`Règle d'association retirées :
-${rule_list}
-`);
-	return { embeds: [embed] };
-}
diff --git a/src/main.ts b/src/main.ts
index 54c00ea..7234b0d 100755
--- a/src/main.ts
+++ b/src/main.ts
@@ -18,7 +18,7 @@ async function main() {
 	const state = await State.from_dir(root_path() + "/local");
 	log("Loaded state with", await state.users_count(), "users.");
 
-	const bot = new EpitlsBot(conf.discord.bot_token, rules);
+	const bot = new EpitlsBot(conf.discord.bot_token);
 	await bot.start();
 	log(`Started bot '${bot.bot_name()}' .`);
 
@@ -73,13 +73,6 @@ class Service {
 				this.emailer.send_confirmation_mail(username ?? "<unknown>", cri_login + "@epita.fr", link);
 			}
 		})();
-
-		// for all updates to rule set, reassign all roles.
-		(async () => {
-			for await (const _ of this.rules.receive_rule_update()) {
-				await this.update_all_users_roles();
-			}
-		});
 	}
 
 	async update_all_users_roles() {
@@ -93,7 +86,7 @@ class Service {
 	async update_user_roles(cri_login: string, discord_user_id: string) {
 		const groups = await this.cri_api.groups_of(cri_login);
 		// log("found groups", groups);
-		const roles = groups.map((group) => [...this.rules.roles_for_group(group)]).flat();
+		const roles = groups.map((group) => this.rules.roles_for_group(group)).flat();
 		// log("found setting roles", roles);
 		for (const { guild_id, role_id } of roles) await this.bot.assign_role(discord_user_id, guild_id, role_id);
 	}
diff --git a/src/rules.ts b/src/rules.ts
index 2240762..f609a0d 100644
--- a/src/rules.ts
+++ b/src/rules.ts
@@ -1,5 +1,4 @@
 import { z } from "https://deno.land/x/zod@v3.22.4/mod.ts";
-import { channel } from "./utils.ts";
 
 export type TargetRole = { guild_id: string; role_id: string };
 
@@ -8,84 +7,48 @@ export type TargetRole = { guild_id: string; role_id: string };
  */
 export class RuleSet {
 	private rules;
-	private file;
-	private update_channel;
 
-	public constructor(file: string) {
-		this.rules = [] as SerializedRule[];
-		this.file = file;
-		this.update_channel = channel<{ updated_groups: string[] }>();
+	public constructor() {
+		this.rules = new Map<string, TargetRole[]>();
 	}
 
 	/**
 	 * Reads a RuleSet from a JSON serialized file.
 	 */
 	public static async from_file(path: string) {
-		const result = new RuleSet(path);
+		const result = new RuleSet();
 		const file_content = await Deno.readTextFile(path);
 		const parsed = parse_rules(file_content);
-		for (const { group_id, target_role } of parsed) await result.append_rule(group_id, target_role);
+		for (const { group_id, target_role } of parsed) result.append_rule(group_id, target_role);
 		return result;
 	}
 
 	/**
 	 * Gets which Discord roles must be assigned to a user which is part of a given CRI group.
 	 */
-	public *roles_for_group(group_id: string) {
-		for (const rule of this.rules) if (rule.group_id === group_id) yield rule.target_role;
-	}
-
-	public *roles_for_guild(target_guild_id: string) {
-		for (const { group_id, target_role: { guild_id, role_id } } of this.rules) {
-			if (target_guild_id === guild_id) yield { group_id, role_id };
-		}
+	public roles_for_group(group_id: string) {
+		return this.rules.get(group_id) ?? [];
 	}
 
 	/**
 	 * Number of managed Discord roles.
 	 */
 	public size() {
-		return this.rules.length;
+		let result = 0;
+		for (const roles of this.rules.values()) result += roles.length;
+		return result;
 	}
 
-	public async append_rule(group_id: string, target_role: TargetRole) {
-		for (const r of this.rules) {
-			const same_group = r.group_id === group_id;
-			const same_target_role = r.target_role.guild_id === target_role.guild_id &&
-				r.target_role.role_id === target_role.role_id;
-			if (same_group && same_target_role) return;
+	private append_rule(group_id: string, target_role: TargetRole) {
+		let roles = this.rules.get(group_id);
+		if (roles === undefined) {
+			roles = [];
+			this.rules.set(group_id, roles);
 		}
-		this.rules.push({ group_id, target_role });
-		await this.save();
-		this.update_channel.send({ updated_groups: [group_id] });
-	}
-
-	public async remove_rules(group_id: string, guild_id: string) {
-		const removed = [] as SerializedRule[];
-		const kept = [] as SerializedRule[];
-		for (const rule of this.rules) {
-			const is_deleted_group = rule.group_id === group_id;
-			const is_from_guild = rule.target_role.guild_id = guild_id;
-			if (is_deleted_group && is_from_guild) removed.push(rule);
-			else kept.push(rule);
-		}
-		this.rules = kept;
-		await this.save();
-		this.update_channel.send({ updated_groups: removed.map((r) => r.group_id) });
-		return removed;
-	}
-
-	public async *receive_rule_update() {
-		while (true) yield await this.update_channel.receive();
-	}
-
-	private async save() {
-		const serialized = JSON.stringify(this.rules, null, 4);
-		await Deno.writeTextFile(this.file, serialized);
+		roles.push(target_role);
 	}
 }
 
-type SerializedRule = ReturnType<typeof parse_rules>[0];
 function parse_rules(content: string) {
 	return z.array(z.object({
 		group_id: z.string(),
diff --git a/src/utils.ts b/src/utils.ts
index 8485cfc..b449060 100644
--- a/src/utils.ts
+++ b/src/utils.ts
@@ -112,13 +112,3 @@ export async function wait(ms: number) {
 	setTimeout(resolver, ms);
 	await promise;
 }
-
-export function* enumerate<T>(items: Iterable<T>) {
-	let index = 0;
-	for (const item of items) yield [item, index++] as const;
-}
-
-export function* reverse<T>(items: Iterable<T>) {
-	const collected = [...items];
-	for (const item of collected.reverse()) yield item;
-}
diff --git a/src/verifier.ts b/src/verifier.ts
index 55069cb..0898175 100644
--- a/src/verifier.ts
+++ b/src/verifier.ts
@@ -53,22 +53,11 @@ export class WebVerifier {
 
 	private serve(request: Request): Response {
 		const url = new URL(request.url);
-		if (url.pathname.startsWith("/verify/")) return this.serve_verification_page(url);
-		if (url.pathname.startsWith("/confirm/")) return this.serve_confirmation(url);
-		return response_failure("Chemin invalide.");
-	}
+		if (!url.pathname.startsWith("/verify/")) return response_failure("Invalid path.");
 
-	private serve_verification_page(url: URL) {
 		const [uid] = url.pathname.slice("/verify/".length).split("/");
-		const exists = this.awaiting.has(uid);
-		if (!exists) return response_failure("Lien de vérification invalide.");
-		return response_verification_page(this.create_confirm_link(uid));
-	}
-
-	private serve_confirmation(url: URL) {
-		const [uid] = url.pathname.slice("/confirm/".length).split("/");
 		const resolver = this.awaiting.get(uid);
-		if (resolver === undefined) return response_failure("Lien de vérification invalide.");
+		if (resolver === undefined) return response_failure("Invalid verification link.");
 
 		resolver(true);
 		this.awaiting.delete(uid);
@@ -76,20 +65,12 @@ export class WebVerifier {
 		return response_success();
 	}
 
-	private async serve_result_page() {
-		//
-	}
-
 	private create_verif_link() {
 		const uid = uuid.generate() as string;
 		const link = `http://${this.conf.url_prefix}/verify/${uid}`;
 		return { uid, link };
 	}
 
-	private create_confirm_link(uid: string) {
-		return `http://${this.conf.url_prefix}/confirm/${uid}`;
-	}
-
 	private async start_peremption(uid: string) {
 		await wait(5 * 60 * 1000); // 5 mins
 		const resolver = this.awaiting.get(uid);
@@ -101,55 +82,34 @@ export class WebVerifier {
 }
 
 function response_failure(message: string) {
-	const body = html_pre(`
-EPITLS BOT
-==========
-
-❌ Échec
----------
-${message}
-`);
-	return new Response(body, { headers: { "Content-Type": "text/html" } });
-}
-
-function response_verification_page(confirm_link: string) {
-	const body = html_pre(`
-EPITLS BOT
-==========
-
-🟡 Vérification
-----------------
-
-Vous êtes sur le point de confirmer l'association.
-<form action="${confirm_link}">
-<input type="submit" value="Confirmer">
-</form>
-`);
+	const body = `<!DOCTYPE html>
+<head>
+    <meta charset="UTF-8">
+    <title>Epitls • Verification</title>
+</head>
+<body>
+<pre>
+❌ Failure :
+${message}    
+</pre>
+</body>
+</html>
+`;
 	return new Response(body, { headers: { "Content-Type": "text/html" } });
 }
 
 function response_success() {
-	const body = html_pre(`
-EPITLS BOT
-==========
-
-✅ Vérifié avec succès
------------------------
-`);
-	return new Response(body, { headers: { "Content-Type": "text/html" } });
-}
-
-function html_pre(content: string) {
-	return `<!DOCTYPE html>
+	const body = `<!DOCTYPE html>
 <head>
 	<meta charset="UTF-8">
 	<title>Epitls • Verification</title>
 </head>
 <body>
 <pre>
-${content}
+✅ Verified successfully.    
 </pre>
 </body>
 </html>
 `;
+	return new Response(body, { headers: { "Content-Type": "text/html" } });
 }