diff --git a/docs/mammon-api.yml b/docs/mammon-api.yml
index e6e6fd8..288933d 100644
--- a/docs/mammon-api.yml
+++ b/docs/mammon-api.yml
@@ -415,66 +415,6 @@ paths:
                   $ref: "#/components/schemas/AcquisitionResponse"
 components:
   schemas:
-    IskRuleClauseResponse:
-      allOf:
-      - $ref: "#/components/schemas/RuleClauseResponse"
-      - type: object
-        properties:
-          fromLedgerRef:
-            type: string
-            pattern: "[a-z]+(-[a-z]+)*"
-          toLedgerRef:
-            type: string
-            pattern: "[a-z]+(-[a-z]+)*"
-      required:
-      - fromLedgerRef
-      - toLedgerRef
-    ItemExchangeRuleClauseResponse:
-      allOf:
-      - $ref: "#/components/schemas/RuleClauseResponse"
-      - type: object
-        properties:
-          rate:
-            type: string
-            enum:
-            - NONE
-            - VALUE
-            - JITA_BUY
-            - JITA_SELL
-            - EVE_ESTIMATE
-          fromLedgerRef:
-            type: string
-            pattern: "[a-z]+(-[a-z]+)*"
-          toLedgerRef:
-            type: string
-            pattern: "[a-z]+(-[a-z]+)*"
-      required:
-      - fromLedgerRef
-      - rate
-      - toLedgerRef
-    RuleClauseResponse:
-      discriminator:
-        propertyName: type
-        mapping:
-          ISK: "#/components/schemas/IskRuleClauseResponse"
-          ITEM_EXCHANGE: "#/components/schemas/ItemExchangeRuleClauseResponse"
-      oneOf:
-      - $ref: "#/components/schemas/IskRuleClauseResponse"
-      - $ref: "#/components/schemas/ItemExchangeRuleClauseResponse"
-      properties:
-        type:
-          type: string
-      required:
-      - type
-    RuleResponse:
-      type: object
-      properties:
-        clauses:
-          type: array
-          items:
-            $ref: "#/components/schemas/RuleClauseResponse"
-      required:
-      - clauses
     UpdateRuleBookRequest:
       type: object
       properties:
@@ -487,14 +427,12 @@ components:
           items:
             type: string
             pattern: "[a-z]+(-[a-z]+)*"
-        rules:
-          type: object
-          additionalProperties:
-            $ref: "#/components/schemas/RuleResponse"
+        script:
+          type: string
       required:
       - ledgerRefs
       - name
-      - rules
+      - script
       - usedForAcquisitions
     RuleBookResponse:
       type: object
@@ -511,15 +449,13 @@ components:
           items:
             type: string
             pattern: "[a-z]+(-[a-z]+)*"
-        rules:
-          type: object
-          additionalProperties:
-            $ref: "#/components/schemas/RuleResponse"
+        script:
+          type: string
       required:
       - ledgerRefs
       - name
       - ruleBookId
-      - rules
+      - script
       - usedForAcquisitions
     UpdateMainLedgerRequest:
       type: object
@@ -623,14 +559,12 @@ components:
           items:
             type: string
             pattern: "[a-z]+(-[a-z]+)*"
-        rules:
-          type: object
-          additionalProperties:
-            $ref: "#/components/schemas/RuleResponse"
+        script:
+          type: string
       required:
       - ledgerRefs
       - name
-      - rules
+      - script
       - usedForAcquisitions
     CreateMainLedgerRequest:
       type: object
diff --git a/src/components/SliderCheckbox.vue b/src/components/SliderCheckbox.vue
index 5577871..fd032b9 100644
--- a/src/components/SliderCheckbox.vue
+++ b/src/components/SliderCheckbox.vue
@@ -12,7 +12,8 @@ const modelValue = defineModel({ default: false });
 
 <style scoped>
 @reference "@/style.css";
-    input:checked ~ span:last-child {
-        --tw-translate-x: 1.25rem;
-    }
+
+input:checked ~ span:last-child {
+  transform: translateX(1.25rem);
+}
 </style>
\ No newline at end of file
diff --git a/src/generated/mammon/api.ts b/src/generated/mammon/api.ts
index 0ea3c2e..09dd446 100644
--- a/src/generated/mammon/api.ts
+++ b/src/generated/mammon/api.ts
@@ -71,14 +71,8 @@ export interface CreateRuleBookRequest {
     'name': string;
     'usedForAcquisitions': boolean;
     'ledgerRefs': Array<string>;
-    'rules': { [key: string]: RuleResponse; };
+    'script': string;
 }
-export interface IskRuleClauseResponse extends RuleClauseResponse {
-    'fromLedgerRef': string;
-    'toLedgerRef': string;
-}
-
-
 export interface IskTransferResponse extends TransferResponse {
     'fromLedgerId': string;
     'toLedgerId': string;
@@ -88,22 +82,6 @@ export interface ItemBalanceResponse {
     'typeId': number;
     'quantity': number;
 }
-export interface ItemExchangeRuleClauseResponse extends RuleClauseResponse {
-    'rate': ItemExchangeRuleClauseResponseRateEnum;
-    'fromLedgerRef': string;
-    'toLedgerRef': string;
-}
-
-export const ItemExchangeRuleClauseResponseRateEnum = {
-    None: 'NONE',
-    Value: 'VALUE',
-    JitaBuy: 'JITA_BUY',
-    JitaSell: 'JITA_SELL',
-    EveEstimate: 'EVE_ESTIMATE',
-} as const;
-
-export type ItemExchangeRuleClauseResponseRateEnum = typeof ItemExchangeRuleClauseResponseRateEnum[keyof typeof ItemExchangeRuleClauseResponseRateEnum];
-
 export interface ItemTransferResponse extends TransferResponse {
     'fromLedgerId': string;
     'toLedgerId': string;
@@ -125,15 +103,7 @@ export interface RuleBookResponse {
     'name': string;
     'usedForAcquisitions': boolean;
     'ledgerRefs': Array<string>;
-    'rules': { [key: string]: RuleResponse; };
-}
-/**
- * @type RuleClauseResponse
- */
-export type RuleClauseResponse = { type: 'ISK' } & IskRuleClauseResponse | { type: 'ITEM_EXCHANGE' } & ItemExchangeRuleClauseResponse;
-
-export interface RuleResponse {
-    'clauses': Array<RuleClauseResponse>;
+    'script': string;
 }
 export interface SetCharacterRuleBookRequest {
     'ruleBookId': string;
@@ -162,7 +132,7 @@ export interface UpdateRuleBookRequest {
     'name': string;
     'usedForAcquisitions': boolean;
     'ledgerRefs': Array<string>;
-    'rules': { [key: string]: RuleResponse; };
+    'script': string;
 }
 
 /**
diff --git a/src/pages/rules/EditCharacterRuleBook.vue b/src/pages/rules/EditCharacterRuleBook.vue
index e3d3d1a..3bd7e80 100644
--- a/src/pages/rules/EditCharacterRuleBook.vue
+++ b/src/pages/rules/EditCharacterRuleBook.vue
@@ -88,7 +88,7 @@ watch(useRoute(), async route => {
       <div class="flex flex-wrap items-center mb-2 mt-2">
         <div class="me-2" v-for="ref in ledgerRefs" :ref="ref">
           <span class="me-1">{{ref}}:</span>
-          <LedgerSelect :ledgers="ledgersToUse" :modelValue="bindings[ref] ?? systemLedger" @update:modelValue="value => bindings[ref] = value" />
+          <LedgerSelect :ledgers="ledgersToUse" :modelValue="bindings[ref] ?? systemLedger" @update:modelValue="value => { if (value) bindings[ref] = value }" />
         </div>
       </div>
     </div>
diff --git a/src/pages/rules/EditRuleBook.vue b/src/pages/rules/EditRuleBook.vue
index 11d7285..3c4ac72 100644
--- a/src/pages/rules/EditRuleBook.vue
+++ b/src/pages/rules/EditRuleBook.vue
@@ -3,15 +3,16 @@ import {useRoute, useRouter} from "vue-router";
 import {ref, watch} from "vue";
 import {useDebounceFn} from "@vueuse/core";
 import log from "loglevel";
-import {activityTypes, RuleInput, Rules, useRuleBooksStore} from "@/rules";
+import {useRuleBooksStore} from "@/rules";
 import {PlusIcon, TrashIcon} from "@heroicons/vue/24/outline";
 import {routeNames} from "@/routes";
-import {Dropdown} from "@/components";
+import {SliderCheckbox} from "@/components";
 
 const ruleBookId = ref<string>();
 const name = ref<string>('');
+const usedForAcquisitions = ref<boolean>(false);
 const ledgerRefs = ref<string[]>([]);
-const rules = ref<Rules>({});
+const script = ref<string>('');
 
 const {findById, create, update, refresh} = useRuleBooksStore();
 const router = useRouter();
@@ -20,16 +21,18 @@ const save = async () => {
   if (!ruleBookId.value) {
     const created = await create({
       name: name.value,
+      usedForAcquisitions: usedForAcquisitions.value,
       ledgerRefs: ledgerRefs.value,
-      rules: rules.value
+      script: script.value
     })
     await router.push({ name: routeNames.editRuleBook, params: {ruleBookId: created.ruleBookId}})
 
   } else {
     await update(ruleBookId.value, {
       name: name.value,
+      usedForAcquisitions: usedForAcquisitions.value,
       ledgerRefs: ledgerRefs.value,
-      rules: rules.value
+      script: script.value
     })
   }
 }
@@ -57,14 +60,16 @@ watch(useRoute(), async route => {
 
     ruleBookId.value = id;
     name.value = ruleBook?.name ?? '';
-    ledgerRefs.value = [...ruleBook?.ledgerRefs];
-    rules.value = {...ruleBook?.rules}; // TODO fully clone rules
+    usedForAcquisitions.value = ruleBook?.usedForAcquisitions ?? false;
+    ledgerRefs.value = [...(ruleBook?.ledgerRefs ?? [])];
+    script.value = ruleBook?.script ?? '';
     log.info('Loaded rule book:', ruleBook);
   } else {
     ruleBookId.value = undefined;
     name.value = '';
+    usedForAcquisitions.value = false;
     ledgerRefs.value = [];
-    rules.value = {};
+    script.value = '';
     log.info('No rule book to load');
   }
 }, { immediate: true })
@@ -76,12 +81,16 @@ watch(useRoute(), async route => {
       <div class="flex grow border-b-1">
         Name:
         <input class="mb-2 ms-2" type="text" v-model="name" />
+        <label class="flex items-center ms-2 mb-2">
+          <SliderCheckbox class="me-2" v-model="usedForAcquisitions"  />
+          Used for acquisitions
+        </label>
       </div>
       <div class="border-b-1">
         Ledgers References:
-        <div class="flex flex-wrap items-center">
+        <div class="flex flex-wrap items-center mt-2">
           <div class="flex items-center mb-2" v-for="(ledgerRef, index) in ledgerRefs" :key="index">
-            <input class="me-1" type="text" :value="ledgerRefs[index]" @input="updateLedgerRef(index, ($event.target as HTMLInputElement).value)" />
+            <input class="me-1" type="text" :value="ledgerRef" @input="updateLedgerRef(index, ($event.target as HTMLInputElement).value)" />
             <button class="btn-icon me-2" @click="removeLedgerRef(index)"><TrashIcon /></button>
           </div>
           <div class="flex items-center mb-2">
@@ -89,14 +98,10 @@ watch(useRoute(), async route => {
           </div>
         </div>
       </div>
-      <div class="flex flex-col grow border-b-1" v-for="activityType in activityTypes" :key="activityType.key">
-        <Dropdown :inline="true" :autoClose="false" class="rule-dropdown">
-          <template #button>
-            <span>{{ activityType.name }}</span>
-          </template>
-          <RuleInput :ledgerRefs="ledgerRefs" :activityType="activityType.key" v-model="rules[activityType.key]" />
-        </Dropdown>
-
+      <div class="flex flex-col grow border-b-1">
+        Script:
+        <textarea class="script-editor mt-2 mb-2" spellcheck="false" v-model="script" rows="20"
+                  placeholder="// activity, transaction, ledgers are available — branch on activity.type"></textarea>
       </div>
     </div>
     <div class="mt-2 justify-end flex">
@@ -110,11 +115,8 @@ watch(useRoute(), async route => {
 <style scoped>
 @reference "@/style.css";
 
-.rule-dropdown :deep(>button) {
-  @apply bg-slate-800 hover:bg-slate-800 border-none flex items-center w-full;
-}
-
-.rule-dropdown.dropdown-open :deep(>button) {
-  @apply bg-slate-800 rounded-b-none;
+.script-editor {
+  @apply bg-slate-900 text-slate-100 font-mono text-sm p-2 rounded w-full resize-y;
+  tab-size: 2;
 }
 </style>
\ No newline at end of file
diff --git a/src/rules/LedgerRefSelect.vue b/src/rules/LedgerRefSelect.vue
deleted file mode 100644
index 918d9f9..0000000
--- a/src/rules/LedgerRefSelect.vue
+++ /dev/null
@@ -1,26 +0,0 @@
-<script setup lang="ts">
-
-import {systemLedger, systemLedgerRef} from "@/ledger";
-
-interface Props {
-  ledgerRefs: string[];
-}
-
-defineProps<Props>()
-
-const ledgerRef = defineModel<string>();
-</script>
-
-<template>
-  <select v-model="ledgerRef" :class="{'system-ledger': ledgerRef === systemLedgerRef}">
-    <option v-for="l in ledgerRefs" :key="l" :value="l" :class="{'system-ledger': l === systemLedgerRef}">{{ l === systemLedgerRef ? systemLedger.name : l }}</option>
-  </select>
-</template>
-
-<style scoped>
-@reference "@/style.css";
-
-.system-ledger {
-  @apply text-emerald-400;
-}
-</style>
diff --git a/src/rules/RuleClauseInput.vue b/src/rules/RuleClauseInput.vue
deleted file mode 100644
index cfdd399..0000000
--- a/src/rules/RuleClauseInput.vue
+++ /dev/null
@@ -1,53 +0,0 @@
-<script setup lang="ts">
-
-import {ItemExchangeRuleClauseResponse, ItemExchangeRuleClauseResponseRateEnum, RuleClauseResponse} from "@/generated/mammon";
-import {computed, watch} from "vue";
-import {systemLedgerRef} from "@/ledger";
-import {ratesTypes} from "@/rules/rules.ts";
-import LedgerRefSelect from "./LedgerRefSelect.vue";
-
-interface Props {
-  ledgerRefs: string[];
-  hasRate: boolean;
-}
-
-const props = defineProps<Props>()
-
-const rule = defineModel<RuleClauseResponse>({ default: {
-    type: 'ITEM_EXCHANGE',
-    rate: ItemExchangeRuleClauseResponseRateEnum.None,
-    fromLedgerRef: systemLedgerRef,
-    toLedgerRef: systemLedgerRef,
-  }});
-
-// Only item-exchange clauses carry a rate; narrow for the rate <select>.
-const itemRule = computed(() => rule.value as ItemExchangeRuleClauseResponse)
-
-const ledgerRefsWithSystem = computed<string[]>(() => [systemLedgerRef, ...props.ledgerRefs])
-
-watch(ledgerRefsWithSystem, (newVal, oldVal) => {
-  if (newVal.length !== oldVal.length) {
-    return;
-  }
-
-  if (rule.value.fromLedgerRef && rule.value.fromLedgerRef !== systemLedgerRef) {
-    rule.value.fromLedgerRef = newVal[oldVal.findIndex(v => v === rule.value.fromLedgerRef)]
-  }
-  if (rule.value.toLedgerRef && rule.value.toLedgerRef !== systemLedgerRef) {
-    rule.value.toLedgerRef = newVal[oldVal.findIndex(v => v === rule.value.toLedgerRef)]
-  }
-})
-</script>
-
-<template>
-  From:
-  <LedgerRefSelect class="me-2 grow" v-model="rule.fromLedgerRef" :ledger-refs="ledgerRefsWithSystem"/>
-  To:
-  <LedgerRefSelect class="me-2 grow" v-model="rule.toLedgerRef" :ledger-refs="ledgerRefsWithSystem"/>
-  <template v-if="hasRate">
-    At:
-    <select class="me-2 grow" v-model="itemRule.rate">
-      <option v-for="rateType in ratesTypes" :key="rateType.key" :value="rateType.key">{{ rateType.name }}</option>
-    </select>
-  </template>
-</template>
diff --git a/src/rules/RuleInput.vue b/src/rules/RuleInput.vue
deleted file mode 100644
index dec8253..0000000
--- a/src/rules/RuleInput.vue
+++ /dev/null
@@ -1,79 +0,0 @@
-<script setup lang="ts">
-
-import {ItemExchangeRuleClauseResponseRateEnum, RuleClauseResponse, RuleResponse} from "@/generated/mammon";
-import RuleClauseInput from "@/rules/RuleClauseInput.vue";
-import {computed, useTemplateRef} from "vue";
-import {Bars4Icon, PlusIcon, TrashIcon} from '@heroicons/vue/24/outline';
-import {useSortable} from "@vueuse/integrations/useSortable";
-import {systemLedgerRef} from "@/ledger";
-import {ActivityType, activityTypeHasRate} from "@/rules/rules.ts";
-
-interface Props {
-  ledgerRefs: string[];
-  activityType: ActivityType;
-}
-
-const props = defineProps<Props>()
-
-const hasRate = computed<boolean>(() => activityTypeHasRate(props.activityType));
-
-const rule = defineModel<RuleResponse>({default: {clauses:[]}});
-const clauses = computed<RuleClauseResponse[]>({
-  get: () =>  rule.value && rule.value.clauses ? rule.value.clauses : [],
-  set: value => rule.value = {clauses: value}
-})
-
-const addClause = () => {
-  const clause: RuleClauseResponse = hasRate.value
-      ? {type: 'ITEM_EXCHANGE', rate: ItemExchangeRuleClauseResponseRateEnum.None, fromLedgerRef: systemLedgerRef, toLedgerRef: systemLedgerRef}
-      : {type: 'ISK', fromLedgerRef: systemLedgerRef, toLedgerRef: systemLedgerRef};
-  clauses.value = [...clauses.value, clause]
-}
-
-const setClause = (index: number, clause?: RuleClauseResponse) => {
-  if (!clause) {
-    return;
-  }
-  clauses.value = clauses.value.with(index, clause)
-}
-
-const removeClause = (index: number) => {
-  clauses.value = clauses.value.toSpliced(index, 1)
-}
-
-const sortableContainer = useTemplateRef('sortable-container')
-useSortable(sortableContainer, clauses, { handle: '.sortable-handle'});
-</script>
-
-<template>
-<div class="flex-col">
-  <div ref="sortable-container" class="flex-col">
-    <div class="flex items-end gap-2 mt-2" v-for="(clause, index) in clauses" :key="index">
-      <span class="sortable-handle flex">
-        <Bars4Icon class="w-6"/>
-      </span>
-      <RuleClauseInput :ledgerRefs="ledgerRefs" :hasRate="hasRate" :modelValue="clause" @update:modelValue="v => setClause(index, v)" />
-      <button class="btn-icon" @click="removeClause(index)"><TrashIcon /></button>
-    </div>
-  </div>
-  <div class="flex justify-end mb-2 mt-2">
-    <button class="btn-icon" @click="addClause"><PlusIcon /></button>
-  </div>
-</div>
-</template>
-
-<style scoped>
-@reference "@/style.css";
-
-.sortable-handle {
-  @apply cursor-grab;
-}
-
-.sortable-chosen {
-  @apply cursor-grabbing;
-}
-
-.sortable-chosen .sortable-handle {
-  @apply cursor-grabbing;
-}
-</style>
diff --git a/src/rules/index.ts b/src/rules/index.ts
index 060eedf..5058ecb 100644
--- a/src/rules/index.ts
+++ b/src/rules/index.ts
@@ -1,3 +1 @@
 export * from "./rules";
-
-export {default as RuleInput} from './RuleInput.vue';
\ No newline at end of file
diff --git a/src/rules/rules.ts b/src/rules/rules.ts
index 05afe80..59afbc9 100644
--- a/src/rules/rules.ts
+++ b/src/rules/rules.ts
@@ -2,39 +2,13 @@ import {characterRuleBookApi, ruleBookApi} from "@/mammon";
 import {
     CharacterRuleBookResponse,
     CreateRuleBookRequest,
-    ItemExchangeRuleClauseResponseRateEnum,
     RuleBookResponse,
-    RuleResponse,
     SetCharacterRuleBookRequest
 } from "@/generated/mammon";
 import {defineStore} from "pinia";
 import {ref, triggerRef} from "vue";
 
-export const activityTypes = {
-    itemBought: {key: "ITEM_BOUGHT", name: "Item Bought"},
-    itemSold: {key: "ITEM_SOLD", name: "Item Sold"},
-    itemAcquiredManually: {key: "ITEM_ACQUIRED_MANUALLY", name: "Item Acquired Manually"},
-    itemConsumedManually: {key: "ITEM_CONSUME_MANUALLY", name: "Item Consumed Manually"},
-    bountyEarned: {key: "BOUNTY_EARNED", name: "Bounty Earned"},
-    // itemManufactured:  {id: "ITEM_MANUFACTURED", name: "Item Manufactured"}
-} as const;
-
-export type Activity = { key: ActivityType, name: string }
-export type ActivityType = typeof activityTypes[keyof typeof activityTypes]['key'];
-export type Rules = { [key: ActivityType]: RuleResponse; };
-export type RuleBook = RuleBookResponse & { rules: Rules }
-
-export const activityTypeHasRate = (key: ActivityType): boolean => key !== activityTypes.bountyEarned.key;
-
-export const ratesTypes = {
-    None: {key: "NONE", name: "0 ISK"},
-    Value: {key: "VALUE", name: "Value"},
-    JitaBuy: {key: "JITA_BUY", name: "Jita Buy Order"},
-    JitaSell: {key: "JITA_SELL", name: "Jita Sell Order"},
-    EveEstimate: {key: "EVE_ESTIMATE", name: "Eve Estimate"},
-} as const;
-
-export type Rate = { key: ItemExchangeRuleClauseResponseRateEnum, name: string }
+export type RuleBook = RuleBookResponse;
 
 export const useRuleBooksStore = defineStore('rule-books', () => {
     const ruleBooks = ref<RuleBook[]>([]);
@@ -59,7 +33,7 @@ export const useRuleBooksStore = defineStore('rule-books', () => {
     const create = (ruleBook: CreateRuleBookRequest) => ruleBookApi.createRuleBook(ruleBook).then(response => addRuleBook(response.data));
     const update = (ruleBookId: string, ruleBook: CreateRuleBookRequest) => ruleBookApi.updateRuleBook(ruleBookId, ruleBook).then(response => replaceRuleBook(response.data));
 
-    const refresh = () => ruleBookApi.findAllRuleBooks().then(response => ruleBooks.value = response.data as RuleBook[]);
+    const refresh = () => ruleBookApi.findAllRuleBooks().then(response => ruleBooks.value = response.data);
 
     refresh();
 
@@ -68,7 +42,7 @@ export const useRuleBooksStore = defineStore('rule-books', () => {
 
 export const findCharacterRuleBookByCharacterId = (characterId: number): Promise<CharacterRuleBookResponse> => characterRuleBookApi.findCharacterRuleBookByCharacterId(characterId)
     .then(response => response.data)
-    .catch(() => ({characterId, rules: {}}));
+    .catch(() => ({characterId, ruleBookId: '', bindings: {}}));
 
 export const setCharacterRuleBookForCharacter = (characterId: number, ruleBook: SetCharacterRuleBookRequest): Promise<CharacterRuleBookResponse> => characterRuleBookApi.setCharacterRuleBookForCharacter(characterId, ruleBook)
     .then(response => response.data);
\ No newline at end of file