diff --git a/api/app/prompts.py b/api/app/prompts.py
index f334ea5..094f3ab 100644
--- a/api/app/prompts.py
+++ b/api/app/prompts.py
@@ -55,3 +55,57 @@ def render_digest(canon_log: dict) -> str:
     lines.append("")
     lines.append("Describe the scene as it is now.")
     return "\n".join(lines)
+
+
+def render_npc_digest(
+    canon_log: dict,
+    *,
+    persona: str,
+    knowledge: list[str],
+    disposition: int,
+    available_moves: list[str],
+    utterance: str,
+) -> str:
+    """User-message digest for the NPC role (§6). Unlike the narrator digest,
+    this deliberately carries the disposition integer (§6 permits it; §7 hides
+    Luck, not disposition) and the closed move vocabulary the NPC may use."""
+    lines: list[str] = []
+    lines.append(f"You are: {persona}")
+    lines.append(
+        f"Your disposition toward the player: {disposition} "
+        f"(-100 hostile, 0 neutral, 100 devoted)."
+    )
+
+    if knowledge:
+        lines.append("")
+        lines.append("What you know (this is ALL you know — do not invent beyond it):")
+        lines += [f"- {k}" for k in knowledge]
+
+    lines.append("")
+    lines.append("Moves you may perform this turn (use ONLY these, as [MOVE: name(args)]):")
+    lines += [f"- {m}" for m in available_moves]
+
+    location = canon_log.get("location", {})
+    lines.append("")
+    lines.append(f"Location: {location.get('name', 'an unknown place')}")
+
+    events = canon_log.get("recent_events", [])
+    if events:
+        lines.append("Recent events:")
+        lines += [f"- {e}" for e in events]
+
+    facts = canon_log.get("established_facts", [])
+    if facts:
+        lines.append("Established facts:")
+        lines += [f"- {f}" for f in facts]
+
+    for quest in canon_log.get("active_quests", []):
+        if quest.get("status") == "active":
+            lines.append(f"Active quest: {quest.get('name', '')} — {quest.get('objective', '')}")
+
+    player = canon_log.get("player", {})
+    lines.append(f"The player is {player.get('name', '')}, a {player.get('class_id', '')}.")
+
+    lines.append("")
+    lines.append(f'The player says to you: "{utterance}"')
+    return "\n".join(lines)
diff --git a/api/tests/test_prompts.py b/api/tests/test_prompts.py
index 940fbeb..d1fceb1 100644
--- a/api/tests/test_prompts.py
+++ b/api/tests/test_prompts.py
@@ -40,3 +40,26 @@ def test_narrator_body_is_authored():
     assert "TBD" not in body
     assert "[FACT:" in body           # the tag instruction is present
     assert "second person" in body    # the core task is present
+
+
+def test_render_npc_digest_includes_all_sections():
+    from app import prompts
+    log = {
+        "player": {"name": "Aldric", "class_id": "sellsword", "luck_descriptor": "the dice are kind"},
+        "location": {"id": "greywater_docks", "name": "Greywater Docks"},
+        "party": [], "recent_events": ["a gull screamed"],
+        "established_facts": ["the eastern bridge is out"],
+        "active_quests": [], "humiliations": [],
+    }
+    out = prompts.render_npc_digest(
+        log, persona="A harried clerk.", knowledge=["The ledger is gone."],
+        disposition=-10, available_moves=["reveal(varrell_twins)", "refuse"],
+        utterance="What happened here?",
+    )
+    assert "A harried clerk." in out
+    assert "-10" in out
+    assert "The ledger is gone." in out
+    assert "reveal(varrell_twins)" in out
+    assert "Greywater Docks" in out
+    assert "the eastern bridge is out" in out
+    assert out.rstrip().endswith('What happened here?"')  # utterance last