diff --git a/poc-memory/src/agents/defs.rs b/poc-memory/src/agents/defs.rs
index 68e8a74..a3cd7f4 100644
--- a/poc-memory/src/agents/defs.rs
+++ b/poc-memory/src/agents/defs.rs
@@ -319,13 +319,31 @@ fn resolve(
                     let included_keys: std::collections::HashSet<&str> = included.iter()
                         .map(|(k, _, _)| k.as_str()).collect();
 
+                    // Budget: stop adding full content when prompt gets large.
+                    // Remaining neighbors get header-only (key + first line).
+                    const NEIGHBORHOOD_BUDGET: usize = 600_000; // ~150K tokens
+                    let mut budget_exceeded = false;
+
                     for (nbr, strength, _score) in &included {
                         if let Some(n) = store.nodes.get(nbr.as_str()) {
-                            out.push_str(&format!("#### {} (link: {:.2})\n\n{}\n\n",
-                                nbr, strength, n.content));
+                            if budget_exceeded || out.len() > NEIGHBORHOOD_BUDGET {
+                                // Header-only: key + first non-empty line
+                                budget_exceeded = true;
+                                let first_line = n.content.lines()
+                                    .find(|l| !l.trim().is_empty())
+                                    .unwrap_or("(empty)");
+                                out.push_str(&format!("#### {} (link: {:.2}) — {}\n",
+                                    nbr, strength, first_line));
+                            } else {
+                                out.push_str(&format!("#### {} (link: {:.2})\n\n{}\n\n",
+                                    nbr, strength, n.content));
+                            }
                             all_keys.push(nbr.to_string());
                         }
                     }
+                    if budget_exceeded {
+                        out.push_str("\n(remaining neighbors shown as headers only — prompt budget)\n\n");
+                    }
 
                     // Cross-links between included neighbors
                     let mut cross_links = Vec::new();