CryptoKeyhole

Fetch bulk metrics

fetch_bulk_metrics

Read-onlyIdempotent

Read several metric selections in one call, each by its exact id. Each item keeps its own provenance and revision; this is not one atomic snapshot. Unsupported selections are explicit per-item errors. The combined result is bounded at 200000 observations and the response-byte limit.

Tool call template

Replace each placeholder with a value matching the input schema. Only required parameters are included; add optional parameters as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {
      "requests": "<requests>"
    },
    "name": "fetch_bulk_metrics"
  }
}

Input Schema

Name	Required	Description	Default
`requests`	Yes	The selections to read, in order; each takes the same arguments as fetch_metric.

Schema Changelog

Changes observed during successful MCP inspections.

Changed1 schema field changedNov 10, 2026

changedInput schema / properties / requests / items / properties / asset / enum

Previous value: -[
-  "BTC",
-  "ETH",
-  "SOL",
-  "XRP",
-  "TRX",
-  "BNB",
-  "DOGE",
-  "TON",
-  "LINK",
-  "ZEC",
-  "HYPE",
-  "WBTC",
-  "ADA",
-  "NEAR",
-  "XLM",
-  "BCH",
-  "XMR",
-  "LTC",
-  "UNI",
-  "AVAX",
-  "SUI",
-  "HBAR",
-  "WLD",
-  "WLFI",
-  "LIT",
-  "MNT",
-  "SHIB",
-  "QNT",
-  "ENA",
-  "TAO",
-  "MORPHO",
-  "AAVE",
-  "ONDO",
-  "OKB",
-  "CRO",
-  "XAUT",
-  "PAXG",
-  "DOT",
-  "ZRO",
-  "PEPE",
-  "SKY",
-  "ICP",
-  "ARB",
-  "PUMP",
-  "ETC",
-  "VVV",
-  "KAS",
-  "ASTER",
-  "FF",
-  "POL",
-  "APT",
-  "INJ",
-  "ALGO",
-  "RENDER",
-  "JUP",
-  "CAKE",
-  "ATOM",
-  "NIGHT",
-  "CRV",
-  "ZAMA",
-  "XTZ",
-  "SENT",
-  "ETHFI",
-  "FIL",
-  "STX",
-  "AERO",
-  "VET",
-  "PENDLE",
-  "ENS",
-  "DASH",
-  "PENGU",
-  "FET",
-  "TRUMP",
-  "PYTH",
-  "VIRTUAL",
-  "NEO",
-  "MET",
-  "THETA",
-  "TIA",
-  "LDO",
-  "KAIA",
-  "MANA",
-  "XPL",
-  "CHZ",
-  "FARTCOIN",
-  "EIGEN",
-  "SPX",
-  "EDGE",
-  "SEI",
-  "RUNE",
-  "ZK",
-  "RAY",
-  "BONK",
-  "IMX",
-  "AXS",
-  "OP",
-  "DYDX",
-  "SNX",
-  "JASMY",
-  "RSR",
-  "AR",
-  "BAT",
-  "GRT",
-  "SYRUP",
-  "STRK",
-  "WIF",
-  "GMX",
-  "ICNT",
-  "LPT",
-  "YFI",
-  "JTO",
-  "IOTA",
-  "GRASS",
-  "FLOKI",
-  "COMP",
-  "SAND",
-  "APE",
-  "ARKM",
-  "PROM",
-  "EGLD",
-  "ORDI",
-  "KSM",
-  "ALT",
-  "GALA",
-  "NIL",
-  "ERA",
-  "AXL",
-  "INIT",
-  "ROSE",
-  "BOME",
-  "ONT",
-  "BRETT",
-  "MERL",
-  "ZIL",
-  "FLOW",
-  "POPCAT",
-  "PNUT",
-  "MEW",
-  "ENJ",
-  "NXPC",
-  "ONE",
-  "HUMA",
-  "SIGN",
-  "CYBER"
-]New value: +[
+  "BTC",
+  "ETH",
+  "SOL",
+  "XRP",
+  "TRX",
+  "BNB",
+  "DOGE",
+  "TON",
+  "LINK",
+  "ZEC",
+  "HYPE",
+  "WBTC",
+  "ADA",
+  "NEAR",
+  "XLM",
+  "BCH",
+  "XMR",
+  "LTC",
+  "UNI",
+  "AVAX",
+  "SUI",
+  "HBAR",
+  "WLD",
+  "WLFI",
+  "LIT",
+  "MNT",
+  "SHIB",
+  "QNT",
+  "ENA",
+  "TAO",
+  "MORPHO",
+  "AAVE",
+  "ONDO",
+  "OKB",
+  "CRO",
+  "XAUT",
+  "PAXG",
+  "DOT",
+  "ZRO",
+  "PEPE",
+  "SKY",
+  "ICP",
+  "ARB",
+  "PUMP",
+  "ETC",
+  "VVV",
+  "KAS",
+  "ASTER",
+  "FF",
+  "POL",
+  "APT",
+  "INJ",
+  "ALGO",
+  "RENDER",
+  "JUP",
+  "CAKE",
+  "ATOM",
+  "NIGHT",
+  "CRV",
+  "ZAMA",
+  "XTZ",
+  "SENT",
+  "ETHFI",
+  "FIL",
+  "STX",
+  "AERO",
+  "VET",
+  "PENDLE",
+  "ENS",
+  "DASH",
+  "PENGU",
+  "FET",
+  "TRUMP",
+  "PYTH",
+  "VIRTUAL",
+  "NEO",
+  "MET",
+  "SONIC",
+  "THETA",
+  "TIA",
+  "LDO",
+  "KAIA",
+  "MANA",
+  "XPL",
+  "CHZ",
+  "FARTCOIN",
+  "EIGEN",
+  "SPX",
+  "EDGE",
+  "SEI",
+  "RUNE",
+  "ZK",
+  "RAY",
+  "BONK",
+  "IMX",
+  "AXS",
+  "OP",
+  "DYDX",
+  "SNX",
+  "JASMY",
+  "RSR",
+  "AR",
+  "BAT",
+  "GRT",
+  "SYRUP",
+  "STRK",
+  "WIF",
+  "GMX",
+  "ICNT",
+  "LPT",
+  "YFI",
+  "JTO",
+  "IOTA",
+  "GRASS",
+  "FLOKI",
+  "COMP",
+  "SAND",
+  "APE",
+  "ARKM",
+  "PROM",
+  "EGLD",
+  "ORDI",
+  "KSM",
+  "ALT",
+  "GALA",
+  "NIL",
+  "ERA",
+  "AXL",
+  "INIT",
+  "ROSE",
+  "BOME",
+  "ONT",
+  "BRETT",
+  "MERL",
+  "ZIL",
+  "FLOW",
+  "POPCAT",
+  "PNUT",
+  "MEW",
+  "ENJ",
+  "NXPC",
+  "ONE",
+  "HUMA",
+  "SIGN",
+  "CYBER"
+]

Changed1 schema field changedNov 10, 2026

changedInput schema / properties / requests / items / properties / asset / enum

Previous value: -[
-  "BTC",
-  "ETH",
-  "SOL",
-  "XRP",
-  "TRX",
-  "BNB",
-  "DOGE",
-  "TON",
-  "LINK",
-  "ZEC",
-  "HYPE",
-  "WBTC",
-  "ADA",
-  "NEAR",
-  "XLM",
-  "BCH",
-  "XMR",
-  "LTC",
-  "UNI",
-  "AVAX",
-  "SUI",
-  "HBAR",
-  "WLD",
-  "WLFI",
-  "LIT",
-  "MNT",
-  "SHIB",
-  "QNT",
-  "ENA",
-  "TAO",
-  "MORPHO",
-  "AAVE",
-  "ONDO",
-  "OKB",
-  "CRO",
-  "DOT",
-  "ZRO",
-  "PEPE",
-  "SKY",
-  "ICP",
-  "ARB",
-  "PUMP",
-  "ETC",
-  "KAS",
-  "ASTER",
-  "FF",
-  "POL",
-  "APT",
-  "INJ",
-  "ALGO",
-  "RENDER",
-  "JUP",
-  "CAKE",
-  "ATOM",
-  "CRV",
-  "ZAMA",
-  "XTZ",
-  "SENT",
-  "ETHFI",
-  "FIL",
-  "STX",
-  "AERO",
-  "VET",
-  "PENDLE",
-  "ENS",
-  "DASH",
-  "PENGU",
-  "FET",
-  "TRUMP",
-  "PYTH",
-  "VIRTUAL",
-  "NEO",
-  "THETA",
-  "TIA",
-  "LDO",
-  "KAIA",
-  "MANA",
-  "CHZ",
-  "FARTCOIN",
-  "EIGEN",
-  "SPX",
-  "EDGE",
-  "SEI",
-  "RUNE",
-  "ZK",
-  "RAY",
-  "BONK",
-  "IMX",
-  "AXS",
-  "OP",
-  "DYDX",
-  "SNX",
-  "JASMY",
-  "RSR",
-  "AR",
-  "BAT",
-  "GRT",
-  "SYRUP",
-  "STRK",
-  "WIF",
-  "GMX",
-  "LPT",
-  "YFI",
-  "JTO",
-  "IOTA",
-  "GRASS",
-  "FLOKI",
-  "COMP",
-  "SAND",
-  "APE",
-  "ARKM",
-  "PROM",
-  "EGLD",
-  "ORDI",
-  "KSM",
-  "ALT",
-  "GALA",
-  "NIL",
-  "ERA",
-  "AXL",
-  "ROSE",
-  "ONT",
-  "BRETT",
-  "ZIL",
-  "FLOW",
-  "POPCAT",
-  "PNUT",
-  "MEW",
-  "ENJ"
-]New value: +[
+  "BTC",
+  "ETH",
+  "SOL",
+  "XRP",
+  "TRX",
+  "BNB",
+  "DOGE",
+  "TON",
+  "LINK",
+  "ZEC",
+  "HYPE",
+  "WBTC",
+  "ADA",
+  "NEAR",
+  "XLM",
+  "BCH",
+  "XMR",
+  "LTC",
+  "UNI",
+  "AVAX",
+  "SUI",
+  "HBAR",
+  "WLD",
+  "WLFI",
+  "LIT",
+  "MNT",
+  "SHIB",
+  "QNT",
+  "ENA",
+  "TAO",
+  "MORPHO",
+  "AAVE",
+  "ONDO",
+  "OKB",
+  "CRO",
+  "XAUT",
+  "PAXG",
+  "DOT",
+  "ZRO",
+  "PEPE",
+  "SKY",
+  "ICP",
+  "ARB",
+  "PUMP",
+  "ETC",
+  "VVV",
+  "KAS",
+  "ASTER",
+  "FF",
+  "POL",
+  "APT",
+  "INJ",
+  "ALGO",
+  "RENDER",
+  "JUP",
+  "CAKE",
+  "ATOM",
+  "NIGHT",
+  "CRV",
+  "ZAMA",
+  "XTZ",
+  "SENT",
+  "ETHFI",
+  "FIL",
+  "STX",
+  "AERO",
+  "VET",
+  "PENDLE",
+  "ENS",
+  "DASH",
+  "PENGU",
+  "FET",
+  "TRUMP",
+  "PYTH",
+  "VIRTUAL",
+  "NEO",
+  "MET",
+  "THETA",
+  "TIA",
+  "LDO",
+  "KAIA",
+  "MANA",
+  "XPL",
+  "CHZ",
+  "FARTCOIN",
+  "EIGEN",
+  "SPX",
+  "EDGE",
+  "SEI",
+  "RUNE",
+  "ZK",
+  "RAY",
+  "BONK",
+  "IMX",
+  "AXS",
+  "OP",
+  "DYDX",
+  "SNX",
+  "JASMY",
+  "RSR",
+  "AR",
+  "BAT",
+  "GRT",
+  "SYRUP",
+  "STRK",
+  "WIF",
+  "GMX",
+  "ICNT",
+  "LPT",
+  "YFI",
+  "JTO",
+  "IOTA",
+  "GRASS",
+  "FLOKI",
+  "COMP",
+  "SAND",
+  "APE",
+  "ARKM",
+  "PROM",
+  "EGLD",
+  "ORDI",
+  "KSM",
+  "ALT",
+  "GALA",
+  "NIL",
+  "ERA",
+  "AXL",
+  "INIT",
+  "ROSE",
+  "BOME",
+  "ONT",
+  "BRETT",
+  "MERL",
+  "ZIL",
+  "FLOW",
+  "POPCAT",
+  "PNUT",
+  "MEW",
+  "ENJ",
+  "NXPC",
+  "ONE",
+  "HUMA",
+  "SIGN",
+  "CYBER"
+]

Changed1 schema field changedNov 9, 2026

changedInput schema / properties / requests / items / properties / asset / enum

Previous value: -[
-  "BTC",
-  "ETH",
-  "SOL",
-  "XRP",
-  "TRX",
-  "BNB",
-  "DOGE",
-  "TON",
-  "LINK",
-  "HYPE",
-  "WBTC",
-  "ADA",
-  "NEAR",
-  "XLM",
-  "BCH",
-  "XMR",
-  "LTC",
-  "UNI",
-  "AVAX",
-  "SUI",
-  "HBAR",
-  "WLD",
-  "WLFI",
-  "LIT",
-  "MNT",
-  "SHIB",
-  "QNT",
-  "ENA",
-  "TAO",
-  "MORPHO",
-  "AAVE",
-  "ONDO",
-  "DOT",
-  "ZRO",
-  "PEPE",
-  "SKY",
-  "ICP",
-  "ARB",
-  "PUMP",
-  "ETC",
-  "KAS",
-  "ASTER",
-  "FF",
-  "POL",
-  "APT",
-  "INJ",
-  "ALGO",
-  "RENDER",
-  "JUP",
-  "CAKE",
-  "ATOM",
-  "CRV",
-  "ZAMA",
-  "XTZ",
-  "SENT",
-  "ETHFI",
-  "FIL",
-  "STX",
-  "AERO",
-  "VET",
-  "PENDLE",
-  "ENS",
-  "DASH",
-  "PENGU",
-  "FET",
-  "TRUMP",
-  "PYTH",
-  "VIRTUAL",
-  "NEO",
-  "THETA",
-  "TIA",
-  "LDO",
-  "KAIA",
-  "MANA",
-  "CHZ",
-  "FARTCOIN",
-  "EIGEN",
-  "SPX",
-  "EDGE",
-  "SEI",
-  "RUNE",
-  "ZK",
-  "RAY",
-  "IMX",
-  "AXS",
-  "OP",
-  "DYDX",
-  "SNX",
-  "JASMY",
-  "RSR",
-  "BAT",
-  "GRT",
-  "SYRUP",
-  "STRK",
-  "WIF",
-  "GMX",
-  "LPT",
-  "YFI",
-  "JTO",
-  "FLOKI",
-  "COMP",
-  "SAND",
-  "APE",
-  "PROM",
-  "ALT",
-  "GALA",
-  "NIL",
-  "ERA"
-]New value: +[
+  "BTC",
+  "ETH",
+  "SOL",
+  "XRP",
+  "TRX",
+  "BNB",
+  "DOGE",
+  "TON",
+  "LINK",
+  "ZEC",
+  "HYPE",
+  "WBTC",
+  "ADA",
+  "NEAR",
+  "XLM",
+  "BCH",
+  "XMR",
+  "LTC",
+  "UNI",
+  "AVAX",
+  "SUI",
+  "HBAR",
+  "WLD",
+  "WLFI",
+  "LIT",
+  "MNT",
+  "SHIB",
+  "QNT",
+  "ENA",
+  "TAO",
+  "MORPHO",
+  "AAVE",
+  "ONDO",
+  "OKB",
+  "CRO",
+  "DOT",
+  "ZRO",
+  "PEPE",
+  "SKY",
+  "ICP",
+  "ARB",
+  "PUMP",
+  "ETC",
+  "KAS",
+  "ASTER",
+  "FF",
+  "POL",
+  "APT",
+  "INJ",
+  "ALGO",
+  "RENDER",
+  "JUP",
+  "CAKE",
+  "ATOM",
+  "CRV",
+  "ZAMA",
+  "XTZ",
+  "SENT",
+  "ETHFI",
+  "FIL",
+  "STX",
+  "AERO",
+  "VET",
+  "PENDLE",
+  "ENS",
+  "DASH",
+  "PENGU",
+  "FET",
+  "TRUMP",
+  "PYTH",
+  "VIRTUAL",
+  "NEO",
+  "THETA",
+  "TIA",
+  "LDO",
+  "KAIA",
+  "MANA",
+  "CHZ",
+  "FARTCOIN",
+  "EIGEN",
+  "SPX",
+  "EDGE",
+  "SEI",
+  "RUNE",
+  "ZK",
+  "RAY",
+  "BONK",
+  "IMX",
+  "AXS",
+  "OP",
+  "DYDX",
+  "SNX",
+  "JASMY",
+  "RSR",
+  "AR",
+  "BAT",
+  "GRT",
+  "SYRUP",
+  "STRK",
+  "WIF",
+  "GMX",
+  "LPT",
+  "YFI",
+  "JTO",
+  "IOTA",
+  "GRASS",
+  "FLOKI",
+  "COMP",
+  "SAND",
+  "APE",
+  "ARKM",
+  "PROM",
+  "EGLD",
+  "ORDI",
+  "KSM",
+  "ALT",
+  "GALA",
+  "NIL",
+  "ERA",
+  "AXL",
+  "ROSE",
+  "ONT",
+  "BRETT",
+  "ZIL",
+  "FLOW",
+  "POPCAT",
+  "PNUT",
+  "MEW",
+  "ENJ"
+]

Changed1 schema field changedNov 9, 2026

changedInput schema / properties / requests / items / properties / asset / enum

Previous value: -[
-  "BTC",
-  "ETH",
-  "SOL",
-  "XRP",
-  "TRX",
-  "BNB",
-  "DOGE",
-  "TON",
-  "LINK",
-  "HYPE",
-  "WBTC",
-  "ADA",
-  "NEAR",
-  "XLM",
-  "BCH",
-  "LTC",
-  "UNI",
-  "AVAX",
-  "SUI",
-  "HBAR",
-  "WLD",
-  "WLFI",
-  "LIT",
-  "MNT",
-  "SHIB",
-  "QNT",
-  "ENA",
-  "MORPHO",
-  "AAVE",
-  "ONDO",
-  "DOT",
-  "ZRO",
-  "PEPE",
-  "SKY",
-  "ARB",
-  "FF",
-  "POL",
-  "APT",
-  "CRV",
-  "ZAMA",
-  "SENT",
-  "ETHFI",
-  "PENDLE",
-  "ENS",
-  "FET",
-  "LDO",
-  "EIGEN",
-  "SPX",
-  "EDGE",
-  "IMX",
-  "AXS",
-  "BAT",
-  "GRT",
-  "SYRUP",
-  "FLOKI",
-  "COMP",
-  "SAND",
-  "APE",
-  "PROM",
-  "ALT",
-  "GALA",
-  "NIL",
-  "ERA"
-]New value: +[
+  "BTC",
+  "ETH",
+  "SOL",
+  "XRP",
+  "TRX",
+  "BNB",
+  "DOGE",
+  "TON",
+  "LINK",
+  "HYPE",
+  "WBTC",
+  "ADA",
+  "NEAR",
+  "XLM",
+  "BCH",
+  "XMR",
+  "LTC",
+  "UNI",
+  "AVAX",
+  "SUI",
+  "HBAR",
+  "WLD",
+  "WLFI",
+  "LIT",
+  "MNT",
+  "SHIB",
+  "QNT",
+  "ENA",
+  "TAO",
+  "MORPHO",
+  "AAVE",
+  "ONDO",
+  "DOT",
+  "ZRO",
+  "PEPE",
+  "SKY",
+  "ICP",
+  "ARB",
+  "PUMP",
+  "ETC",
+  "KAS",
+  "ASTER",
+  "FF",
+  "POL",
+  "APT",
+  "INJ",
+  "ALGO",
+  "RENDER",
+  "JUP",
+  "CAKE",
+  "ATOM",
+  "CRV",
+  "ZAMA",
+  "XTZ",
+  "SENT",
+  "ETHFI",
+  "FIL",
+  "STX",
+  "AERO",
+  "VET",
+  "PENDLE",
+  "ENS",
+  "DASH",
+  "PENGU",
+  "FET",
+  "TRUMP",
+  "PYTH",
+  "VIRTUAL",
+  "NEO",
+  "THETA",
+  "TIA",
+  "LDO",
+  "KAIA",
+  "MANA",
+  "CHZ",
+  "FARTCOIN",
+  "EIGEN",
+  "SPX",
+  "EDGE",
+  "SEI",
+  "RUNE",
+  "ZK",
+  "RAY",
+  "IMX",
+  "AXS",
+  "OP",
+  "DYDX",
+  "SNX",
+  "JASMY",
+  "RSR",
+  "BAT",
+  "GRT",
+  "SYRUP",
+  "STRK",
+  "WIF",
+  "GMX",
+  "LPT",
+  "YFI",
+  "JTO",
+  "FLOKI",
+  "COMP",
+  "SAND",
+  "APE",
+  "PROM",
+  "ALT",
+  "GALA",
+  "NIL",
+  "ERA"
+]

Changed1 schema field changedNov 8, 2026

changedInput schema / properties / requests / items / properties / interval / description

Previous value: -"Resolution of the observations: 24h daily, 1w weekly, 1M monthly or 1Y yearly. get_metric_metadata gives the intervals a metric offers."New value: +"Resolution: 24h daily, 1w weekly, 1M monthly, 1Y yearly. get_metric_metadata gives the intervals a metric offers."

Changed2 schema fields changedNov 8, 2026

changedInput schema / properties / requests / items / properties / end / description

Previous value: -"Exclusive UNIX seconds UTC."New value: +"Exclusive UNIX seconds UTC. Leave it out to read up to the latest observation."

changedInput schema / properties / requests / items / properties / start / description

Previous value: -"Inclusive UNIX seconds UTC."New value: +"Inclusive UNIX seconds UTC. Without it fetch_metric reads the latest year of daily observations (ten years of weekly ones, every monthly and yearly one)."

Changed1 schema field changedNov 7, 2026

changedInput schema / properties / requests / items / properties / metric / description

Previous value: -"Metric id, for example ckh.SpotPrice or eth.PriceUSD; get_asset_metrics lists every id."New value: +"Exact metric id as get_asset_metrics lists it, for example ckh.SpotPrice or eth.PriceUSD."

Changed8 schema fields changedOct 30, 2026

addedInput schema / properties / requests / description

Added value: +"The selections to read, in order; each takes the same arguments as fetch_metric."

addedInput schema / properties / requests / items / properties / asset / description

Added value: +"Asset code, for example BTC or ETH; get_assets_list gives every code with its name."

addedInput schema / properties / requests / items / properties / interval / description

Added value: +"Resolution of the observations: 24h daily, 1w weekly, 1M monthly or 1Y yearly. get_metric_metadata gives the intervals a metric offers."

addedInput schema / properties / requests / items / properties / interval / enum
```
Added value: +[
+  "24h",
+  "1w",
+  "1M",
+  "1Y"
+]
```

addedInput schema / properties / requests / items / properties / metric / description

Added value: +"Metric id, for example ckh.SpotPrice or eth.PriceUSD; get_asset_metrics lists every id."

addedInput schema / properties / requests / items / properties / sma / description
```
Added value: +"Smoothing window in observations; 0 returns the raw series."
```
addedInput schema / properties / requests / items / properties / sma / maximum
```
Added value: +3650
```

addedInput schema / properties / requests / items / properties / smoothing / description

Added value: +"How sma smooths the series: simple mean (sma), exponential mean (ema) or moving median (median)."

Changed1 schema field changedOct 22, 2026

changedInput schema / properties / requests / items / properties / asset / enum

Previous value: -[
-  "BTC",
-  "ETH",
-  "SOL",
-  "XRP",
-  "TRX",
-  "BNB",
-  "DOGE",
-  "TON",
-  "LINK",
-  "HYPE",
-  "WBTC",
-  "ADA",
-  "NEAR",
-  "XLM",
-  "BCH",
-  "LTC",
-  "UNI",
-  "AVAX",
-  "SUI",
-  "HBAR",
-  "WLFI",
-  "LIT",
-  "SHIB",
-  "QNT",
-  "ENA",
-  "MORPHO",
-  "AAVE",
-  "ONDO",
-  "DOT",
-  "ZRO",
-  "PEPE",
-  "SKY",
-  "ARB",
-  "FF",
-  "POL",
-  "APT",
-  "CRV",
-  "ZAMA",
-  "SENT",
-  "ETHFI",
-  "PENDLE",
-  "ENS",
-  "FET",
-  "LDO",
-  "EIGEN",
-  "EDGE",
-  "IMX",
-  "AXS",
-  "GRT",
-  "SYRUP",
-  "FLOKI",
-  "COMP",
-  "SAND",
-  "APE",
-  "NIL",
-  "ERA"
-]New value: +[
+  "BTC",
+  "ETH",
+  "SOL",
+  "XRP",
+  "TRX",
+  "BNB",
+  "DOGE",
+  "TON",
+  "LINK",
+  "HYPE",
+  "WBTC",
+  "ADA",
+  "NEAR",
+  "XLM",
+  "BCH",
+  "LTC",
+  "UNI",
+  "AVAX",
+  "SUI",
+  "HBAR",
+  "WLD",
+  "WLFI",
+  "LIT",
+  "MNT",
+  "SHIB",
+  "QNT",
+  "ENA",
+  "MORPHO",
+  "AAVE",
+  "ONDO",
+  "DOT",
+  "ZRO",
+  "PEPE",
+  "SKY",
+  "ARB",
+  "FF",
+  "POL",
+  "APT",
+  "CRV",
+  "ZAMA",
+  "SENT",
+  "ETHFI",
+  "PENDLE",
+  "ENS",
+  "FET",
+  "LDO",
+  "EIGEN",
+  "SPX",
+  "EDGE",
+  "IMX",
+  "AXS",
+  "BAT",
+  "GRT",
+  "SYRUP",
+  "FLOKI",
+  "COMP",
+  "SAND",
+  "APE",
+  "PROM",
+  "ALT",
+  "GALA",
+  "NIL",
+  "ERA"
+]

Changed1 schema field changedOct 22, 2026

changedInput schema / properties / requests / items / properties / asset / enum

Previous value: -[
-  "BTC",
-  "ETH",
-  "SOL",
-  "XRP",
-  "TRX",
-  "BNB",
-  "DOGE",
-  "TON",
-  "LINK",
-  "HYPE",
-  "WBTC",
-  "ADA",
-  "NEAR",
-  "XLM",
-  "BCH",
-  "LTC",
-  "UNI",
-  "AVAX",
-  "SUI",
-  "HBAR",
-  "WLFI",
-  "SHIB",
-  "QNT",
-  "ENA",
-  "MORPHO",
-  "AAVE",
-  "ONDO",
-  "DOT",
-  "ZRO",
-  "PEPE",
-  "SKY",
-  "ARB",
-  "POL",
-  "APT",
-  "CRV",
-  "ETHFI",
-  "PENDLE",
-  "ENS",
-  "FET",
-  "LDO",
-  "EIGEN",
-  "IMX",
-  "AXS",
-  "GRT",
-  "SYRUP",
-  "FLOKI",
-  "COMP",
-  "SAND",
-  "APE"
-]New value: +[
+  "BTC",
+  "ETH",
+  "SOL",
+  "XRP",
+  "TRX",
+  "BNB",
+  "DOGE",
+  "TON",
+  "LINK",
+  "HYPE",
+  "WBTC",
+  "ADA",
+  "NEAR",
+  "XLM",
+  "BCH",
+  "LTC",
+  "UNI",
+  "AVAX",
+  "SUI",
+  "HBAR",
+  "WLFI",
+  "LIT",
+  "SHIB",
+  "QNT",
+  "ENA",
+  "MORPHO",
+  "AAVE",
+  "ONDO",
+  "DOT",
+  "ZRO",
+  "PEPE",
+  "SKY",
+  "ARB",
+  "FF",
+  "POL",
+  "APT",
+  "CRV",
+  "ZAMA",
+  "SENT",
+  "ETHFI",
+  "PENDLE",
+  "ENS",
+  "FET",
+  "LDO",
+  "EIGEN",
+  "EDGE",
+  "IMX",
+  "AXS",
+  "GRT",
+  "SYRUP",
+  "FLOKI",
+  "COMP",
+  "SAND",
+  "APE",
+  "NIL",
+  "ERA"
+]

First observedOct 21, 2026

TDQS

A3.9/5.0

Behavior4/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Annotations already cover safety (readOnly, idempotent, non-destructive, closed-world), and the description adds genuinely non-obvious behavior: per-item provenance and revision, explicitly non-atomic results, per-item errors for unsupported selections, and a 200000-observation plus response-byte bound. It does not say whether exceeding the bound truncates or errors, which is the one remaining behavioral gap.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Four short sentences, each carrying a distinct fact (per-item reads, non-atomicity, per-item errors, result bounds), with the core purpose front-loaded and zero filler.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness5/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

No output schema exists, but the description supplies the return-shape essentials an agent needs: per-item provenance, non-atomic composition, per-item error reporting, and result-size bounds. For a single-parameter bulk read with fully documented nested schema, nothing material is missing.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 100% and every nested field (metric, asset, interval, sma, smoothing, start/end, publication) is documented inline, so the schema does the heavy lifting. The description only adds the constraint that ids must be exact and that items take the same arguments as fetch_metric, which is marginal beyond baseline 3.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

States a specific verb and resource ('Read several metric selections in one call, each by its exact id') and the plural 'several ... in one call' implicitly separates it from the single-metric sibling fetch_metric, which the schema then names explicitly. It stops short of naming the sibling in the description itself, so the differentiation is inferred rather than stated.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines3/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The bulk framing implies when to prefer it over fetch_metric, but there is no explicit 'use this when you need N metrics, use fetch_metric for one' routing statement and no stated exclusions. Usage is implied rather than guided.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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