diff --git a/src/lib/llm/prompts.ts b/src/lib/llm/prompts.ts
index 77ace34..f05462e 100644
--- a/src/lib/llm/prompts.ts
+++ b/src/lib/llm/prompts.ts
@@ -1,14 +1,114 @@
+import type {
+  ArticleInput,
+  ConfirmedFactCard,
+  OptimizedArticle,
+  PublishPlatform,
+  QaCheck,
+} from "../domain/types";
+
 export const JSON_ONLY_PROMPT =
   "Return valid JSON only. Do not include markdown fences or commentary.";
 
 export const ARTICLE_OPTIMIZER_SYSTEM_PROMPT = [
   "You optimize GEO-related articles under a confirmed fact card.",
   "Never invent numbers, cases, qualifications, company names, products, or years.",
+  "Use only facts present in the confirmed fact card or source article.",
   JSON_ONLY_PROMPT,
 ].join(" ");
 
 export const QUALITY_INSPECTOR_SYSTEM_PROMPT = [
   "Evaluate article quality against the confirmed fact card and target platform.",
-  "Return one structured check per required quality gate.",
+  "Return one structured check per required quality gate when asked.",
+  "Do not downgrade deterministic hard failures supplied by the application.",
   JSON_ONLY_PROMPT,
 ].join(" ");
+
+export const FACT_EXTRACTOR_SYSTEM_PROMPT = [
+  "Extract a candidate fact card from the source article.",
+  "Do not mark uncertain facts as confirmed.",
+  "Put missing or conflicting facts in uncertain_items.",
+  JSON_ONLY_PROMPT,
+].join(" ");
+
+export const TARGETED_REWRITER_SYSTEM_PROMPT = [
+  "Rewrite only the fields needed to resolve the provided failed QA checks.",
+  "Keep confirmed facts unchanged.",
+  "Preserve sections that are unrelated to failed checks.",
+  JSON_ONLY_PROMPT,
+].join(" ");
+
+export function buildFactExtractorPrompt(input: ArticleInput) {
+  return [
+    "Return a CandidateFactCard JSON object with these exact keys:",
+    "company_full_name, company_short_names, brand_names, product_names, target_industry, target_audience, experience_years, core_claims, forbidden_claims, image_topics, uncertain_items.",
+    "Do not include confirmed_by_user.",
+    "",
+    "Article input:",
+    JSON.stringify(input, null, 2),
+  ].join("\n");
+}
+
+export function buildArticleOptimizerPrompt(
+  input: ArticleInput,
+  factCard: ConfirmedFactCard,
+) {
+  return [
+    "Return an OptimizedArticle JSON object with these exact keys:",
+    "title, summary, body_markdown, image_suggestions, changed_sections, requires_user_confirmation.",
+    "Use Markdown in body_markdown.",
+    "If the user instruction asks for unsupported facts, omit them from the article and add them to requires_user_confirmation.",
+    "",
+    "Confirmed fact card:",
+    JSON.stringify(factCard, null, 2),
+    "",
+    "Article input:",
+    JSON.stringify(input, null, 2),
+  ].join("\n");
+}
+
+export function buildQualityInspectorPrompt(input: {
+  article: OptimizedArticle;
+  factCard: ConfirmedFactCard;
+  platform: PublishPlatform;
+  deterministicChecks: QaCheck[];
+}) {
+  return [
+    "Return a JSON object with a checks array.",
+    "Each check must include rule_id, status, evidence, reason, suggested_fix, and target_agent.",
+    "Only use rule_id values already present in deterministicChecks.",
+    "If a deterministic check has status fail, keep it fail.",
+    "",
+    "Target platform:",
+    input.platform,
+    "",
+    "Confirmed fact card:",
+    JSON.stringify(input.factCard, null, 2),
+    "",
+    "Optimized article:",
+    JSON.stringify(input.article, null, 2),
+    "",
+    "Deterministic checks:",
+    JSON.stringify(input.deterministicChecks, null, 2),
+  ].join("\n");
+}
+
+export function buildTargetedRewritePrompt(input: {
+  article: OptimizedArticle;
+  factCard: ConfirmedFactCard;
+  failedChecks: QaCheck[];
+}) {
+  return [
+    "Return an OptimizedArticle JSON object.",
+    "Rewrite only the fields needed for failedChecks.",
+    "Do not add unconfirmed numbers, customer names, qualifications, awards, or capabilities.",
+    "",
+    "Confirmed fact card:",
+    JSON.stringify(input.factCard, null, 2),
+    "",
+    "Current optimized article:",
+    JSON.stringify(input.article, null, 2),
+    "",
+    "Failed checks:",
+    JSON.stringify(input.failedChecks, null, 2),
+  ].join("\n");
+}