diff --git a/scripts/jargon-list.json b/scripts/jargon-list.json
new file mode 100644
index 00000000..e8f321d8
--- /dev/null
+++ b/scripts/jargon-list.json
@@ -0,0 +1,84 @@
+{
+  "$schema": "./jargon-list.schema.json",
+  "version": 1,
+  "description": "Repo-owned curated list of technical terms that get a one-sentence gloss on first use per skill invocation. Terms NOT on this list are assumed plain-English enough. See docs/designs/PLAN_TUNING_V1.md. Contributions: open a PR.",
+  "terms": [
+    "idempotent",
+    "idempotency",
+    "race condition",
+    "deadlock",
+    "cyclomatic complexity",
+    "N+1",
+    "N+1 query",
+    "backpressure",
+    "memoization",
+    "eventual consistency",
+    "CAP theorem",
+    "CORS",
+    "CSRF",
+    "XSS",
+    "SQL injection",
+    "prompt injection",
+    "DDoS",
+    "rate limit",
+    "throttle",
+    "circuit breaker",
+    "load balancer",
+    "reverse proxy",
+    "SSR",
+    "CSR",
+    "hydration",
+    "tree-shaking",
+    "bundle splitting",
+    "code splitting",
+    "hot reload",
+    "tombstone",
+    "soft delete",
+    "cascade delete",
+    "foreign key",
+    "composite index",
+    "covering index",
+    "OLTP",
+    "OLAP",
+    "sharding",
+    "replication lag",
+    "quorum",
+    "two-phase commit",
+    "saga",
+    "outbox pattern",
+    "inbox pattern",
+    "optimistic locking",
+    "pessimistic locking",
+    "thundering herd",
+    "cache stampede",
+    "bloom filter",
+    "consistent hashing",
+    "virtual DOM",
+    "reconciliation",
+    "closure",
+    "hoisting",
+    "tail call",
+    "GIL",
+    "zero-copy",
+    "mmap",
+    "cold start",
+    "warm start",
+    "green-blue deploy",
+    "canary deploy",
+    "feature flag",
+    "kill switch",
+    "dead letter queue",
+    "fan-out",
+    "fan-in",
+    "debounce",
+    "throttle (UI)",
+    "hydration mismatch",
+    "memory leak",
+    "GC pause",
+    "heap fragmentation",
+    "stack overflow",
+    "null pointer",
+    "dangling pointer",
+    "buffer overflow"
+  ]
+}