{
 "id": "chain_tvl",
 "lobe": "chain",
 "lobe_name": "Chain Cortex",
 "title": "Chain TVL",
 "summary": "Total value locked on every blockchain right now, ranked — or one chain's daily TVL history.",
 "description": "DefiLlama chain TVL. Without \"chain\": ranking of all chains with token symbol. With \"chain\": daily TVL history for up to 365 days plus 7 d / 30 d / 90 d change.",
 "price_usd": 0,
 "free": true,
 "free_tier_daily": null,
 "input_schema": {
  "type": "object",
  "properties": {
   "chain": {
    "type": "string",
    "description": "e.g. Solana, Ethereum, Base (optional)"
   },
   "days": {
    "type": "integer",
    "minimum": 7,
    "maximum": 365,
    "default": 90,
    "description": "Days of daily TVL history (only when a single chain is requested). Range 7-365. Default 90."
   },
   "limit": {
    "type": "integer",
    "minimum": 1,
    "maximum": 200,
    "default": 30,
    "description": "How many chains to return in the ranking. Range 1-200. Default 30."
   }
  },
  "additionalProperties": false
 },
 "example": {
  "chain": "Solana",
  "days": 30
 },
 "http": {
  "method": "POST",
  "url": "https://agent.maddegen.art/hub/api/v1/tools/chain_tvl",
  "body": "JSON arguments"
 },
 "mcp": {
  "server": "https://agent.maddegen.art/hub/mcp",
  "tool": "chain_tvl"
 },
 "health": {
  "calls_24h": 12,
  "success_pct": 100,
  "p50_ms": 44,
  "p95_ms": 54
 }
}