{
 "id": "https://redfinchadvisory.com/lexicon/system-prompt",
 "slug": "system-prompt",
 "prefLabel": "System prompt",
 "altLabel": [
  "Developer prompt",
  "Preamble"
 ],
 "hiddenLabel": [],
 "definition": "A prompt written by the developer or vendor, not the user, that the app sends alongside every user-supplied prompt to set the model's role, rules, and tone.",
 "scopeNote": "",
 "tier": "explain",
 "group": "Connections and systems",
 "broader": [
  "https://redfinchadvisory.com/lexicon/agent-harness"
 ],
 "narrower": [],
 "related": [
  {
   "id": "https://redfinchadvisory.com/lexicon/agent-skill",
   "type": "related"
  },
  {
   "id": "https://redfinchadvisory.com/lexicon/prompt",
   "type": "confused"
  },
  {
   "id": "https://redfinchadvisory.com/lexicon/role-prompting",
   "type": "related"
  }
 ],
 "links": [
  {
   "id": "https://redfinchadvisory.com/lexicon/context",
   "label": "part of",
   "direction": "out"
  }
 ],
 "modified": "2026-10-21",
 "markdown": "https://redfinchadvisory.com/lexicon/system-prompt.md",
 "inScheme": {
  "id": "https://redfinchadvisory.com/lexicon",
  "version": "1.0",
  "currentAsOf": "2026-10-21"
 }
}