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whale_flows

Read-only

Large transfer counts and USD totals per chain, one row per transaction over 500,000 USD, with exchangeTouching = transfers from or to a known exchange hot wallet or deposit address. What is counted: ethereum, bnb, polygon, avalanche native-coin transfers in transfers and totalUsd, and their stablecoin transfers of 500,000 USD or more (USDT, USDC, USD1, USDS, U, USDC.e) in stablecoins, with the blocks read against the block span as coverage; tron TRX and TRC-20 stablecoins; xrp native XRP; sui native SUI; bitcoin since 2026-09-25, the value sent to addresses other than the sender. exchangeTouching is null on bitcoin, tron and sui (too few labelled exchange addresses). Large solana transfers are not captured: the solana row answers null. window in hours default 24 max 168. Price: 2 cents per call.

Input Schema

NameRequiredDescriptionDefault
chainNoChain name, one of the listed values; absent = every listed chain. Example: ethereum
windowNoWindow in whole hours, 1 to 168, default 24. Example: 48

Output Schema

NameRequiredDescriptionDefault
resultsYes
dataGapsNoPresent only when the window of the answer overlaps a recorded data gap. Figures inside each listed period are incomplete. periods are the recorded gaps (end null while still open); atCall is measured against the window of this call and is left out of meta.contentHash.

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed2 schema fields changed
    • addedInput schema / properties / chain / description
      Added value: +"Chain name, one of the listed values; absent = every listed chain. Example: ethereum"
    • addedInput schema / properties / window / description
      Added value: +"Window in whole hours, 1 to 168, default 24. Example: 48"
  2. Changed1 schema field changed
    • changedInput schema / x-lexicon / bundleSha256
      Previous value: -"670f7504e3de5031beccee25a2d24e4515f68b893295f6d5b0d3a0665498b2c9"New value: +"25cc80db6d8e9eac73d47a50f7ad6333a21f1972d008a8fed0159de8bfb4b519"
  3. Changed2 schema fields changed
    • changedInput schema / x-lexicon / bundleSha256
      Previous value: -"e5b4290024a229f2bdf97f8fc6a0079c3fe13b77267f41fdcffeb8b26aa1c41e"New value: +"670f7504e3de5031beccee25a2d24e4515f68b893295f6d5b0d3a0665498b2c9"
    • changedInput schema / x-lexicon / version
      Previous value: -"0.1.0"New value: +"0.2.0"
  4. Changed5 schema fields changed
    • addedInput schema / additionalProperties
      Added value: +false
    • addedOutput schema / properties / dataGaps
      Added value: +{
      +  "additionalProperties": false,
      +  "description": "Present only when the window of the answer overlaps a recorded data gap. Figures inside each listed period are incomplete. periods are the recorded gaps (end null while still open); atCall is measured against the window of this call and is left out of meta.contentHash.",
      +  "properties": {
      +    "gaps": {
      +      "items": {
      +        "additionalProperties": false,
      +        "properties": {
      +          "atCall": {
      +            "additionalProperties": false,
      +            "properties": {
      +              "note": {
      +                "type": "string"
      +              },
      +              "periodsInWindow": {
      +                "items": {
      +                  "additionalProperties": false,
      +                  "properties": {
      +                    "end": {
      +                      "type": "number"
      +                    },
      +                    "ongoing": {
      +                      "type": "boolean"
      +                    },
      +                    "start": {
      +                      "type": "number"
      +                    }
      +                  },
      +                  "required": [
      +                    "start",
      +                    "end"
      +                  ],
      +                  "type": "object"
      +                },
      +                "type": "array"
      +              },
      +              "shareOfWindowPct": {
      +                "type": "number"
      +              },
      +              "windowEnd": {
      +                "type": "number"
      +              },
      +              "windowStart": {
      +                "type": "number"
      +              }
      +            },
      +            "required": [
      +              "windowStart",
      +              "windowEnd",
      +              "periodsInWindow",
      +              "shareOfWindowPct",
      +              "note"
      +            ],
      +            "type": "object"
      +          },
      +          "chain": {
      +            "type": "string"
      +          },
      +          "data": {
      +            "type": "string"
      +          },
      +          "periods": {
      +            "items": {
      +              "additionalProperties": false,
      +              "properties": {
      +                "end": {
      +                  "type": [
      +                    "number",
      +                    "null"
      +                  ]
      +                },
      +                "ongoing": {
      +                  "type": "boolean"
      +                },
      +                "start": {
      +                  "type": "number"
      +                }
      +              },
      +              "required": [
      +                "start",
      +                "end"
      +              ],
      +              "type": "object"
      +            },
      +            "type": "array"
      +          },
      +          "records": {
      +            "items": {
      +              "additionalProperties": false,
      +              "properties": {
      +                "lost": {
      +                  "type": [
      +                    "number",
      +                    "null"
      +                  ]
      +                },
      +                "lostUnit": {
      +                  "type": [
      +                    "string",
      +                    "null"
      +                  ]
      +                },
      +                "record": {
      +                  "type": "string"
      +                },
      +                "source": {
      +                  "type": "string"
      +                }
      +              },
      +              "required": [
      +                "source",
      +                "record"
      +              ],
      +              "type": "object"
      +            },
      +            "type": "array"
      +          },
      +          "section": {
      +            "type": "string"
      +          },
      +          "window": {
      +            "type": "string"
      +          }
      +        },
      +        "required": [
      +          "section",
      +          "chain",
      +          "data",
      +          "window",
      +          "periods",
      +          "records",
      +          "atCall"
      +        ],
      +        "type": "object"
      +      },
      +      "type": "array"
      +    },
      +    "statement": {
      +      "type": "string"
      +    }
      +  },
      +  "required": [
      +    "statement",
      +    "gaps"
      +  ],
      +  "type": "object"
      +}
    • removedOutput schema / properties / meta
      Removed value: -{
      -  "additionalProperties": false,
      -  "properties": {
      -    "contentHash": {
      -      "type": "string"
      -    },
      -    "generated": {
      -      "type": "number"
      -    },
      -    "priceUsd": {
      -      "type": "number"
      -    },
      -    "validUntil": {
      -      "type": "number"
      -    }
      -  },
      -  "type": "object"
      -}
    • removedOutput schema / properties / receipt
      Removed value: -{
      -  "additionalProperties": false,
      -  "properties": {
      -    "bytes": {
      -      "type": "number"
      -    },
      -    "covers": {
      -      "type": "string"
      -    },
      -    "issuedAt": {
      -      "type": "number"
      -    },
      -    "lookup": {
      -      "type": "string"
      -    },
      -    "network": {
      -      "type": [
      -        "string",
      -        "null"
      -      ]
      -    },
      -    "nonce": {
      -      "type": "string"
      -    },
      -    "seq": {
      -      "type": "number"
      -    },
      -    "settleTx": {
      -      "type": [
      -        "string",
      -        "null"
      -      ]
      -    },
      -    "sha256": {
      -      "type": "string"
      -    },
      -    "tool": {
      -      "type": [
      -        "string",
      -        "null"
      -      ]
      -    }
      -  },
      -  "type": "object"
      -}
    • addedOutput schema / properties / results / items / properties / stablecoins
      Added value: +{
      +  "additionalProperties": true,
      +  "type": [
      +    "object",
      +    "null"
      +  ]
      +}
  5. Changed1 schema field changed
    • changedInput schema / properties / chain / enum
      Previous value: -[
      -  "ethereum",
      -  "bnb",
      -  "solana",
      -  "avalanche",
      -  "xrp",
      -  "tron",
      -  "polygon",
      -  "sui"
      -]New value: +[
      +  "bitcoin",
      +  "ethereum",
      +  "bnb",
      +  "solana",
      +  "avalanche",
      +  "xrp",
      +  "tron",
      +  "polygon",
      +  "sui"
      +]
  6. Changed4 schema fields changed
    • changedOutput schema / properties / results / items / properties / exchangeTouching / type
      Previous value: -"number"New value: +[
      +  "number",
      +  "null"
      +]
    • changedOutput schema / properties / results / items / properties / totalUsd / type
      Previous value: -"number"New value: +[
      +  "number",
      +  "null"
      +]
    • changedOutput schema / properties / results / items / properties / transfers / type
      Previous value: -"number"New value: +[
      +  "number",
      +  "null"
      +]
    • addedOutput schema / properties / results / items / properties / unavailable
      Added value: +{
      +  "type": [
      +    "string",
      +    "null"
      +  ]
      +}
  7. Changed1 schema field changed
    • changedInput schema / x-lexicon / bundleSha256
      Previous value: -"a1c2e10fd3177d6b4d59ca78693e8fb36880165cf0f735f680dd86a510411178"New value: +"e5b4290024a229f2bdf97f8fc6a0079c3fe13b77267f41fdcffeb8b26aa1c41e"
  8. Changed1 schema field changed
    • changedInput schema / x-lexicon / bundleSha256
      Previous value: -"1eeb782ee15fe69fc80776948e0556fa6b795e210e6305935b2c97b73d955cda"New value: +"a1c2e10fd3177d6b4d59ca78693e8fb36880165cf0f735f680dd86a510411178"
  9. Changed1 schema field changed
    • changedInput schema / x-lexicon / bundleSha256
      Previous value: -"c014292cad7497ce9fd68c33345ac32cb42b672c8e77d6c749c26e162cc207e4"New value: +"1eeb782ee15fe69fc80776948e0556fa6b795e210e6305935b2c97b73d955cda"
  10. Changed2 schema fields changed
    • addedInput schema / x-lexicon
      Added value: +{
      +  "bundleSha256": "c014292cad7497ce9fd68c33345ac32cb42b672c8e77d6c749c26e162cc207e4",
      +  "name": "ChainHelix Agentic Lexicon",
      +  "resolve": "lexicon_resolve",
      +  "spec": "lexicon_spec",
      +  "version": "0.1.0"
      +}
    • addedInput schema / x-vocab
      Added value: +{
      +  "chain": "onchain.chain",
      +  "window": "market.window"
      +}
  11. Changed1 schema field changed
    • changedInput schema / properties / chain / enum
      Previous value: -[
      -  "bitcoin",
      -  "ethereum",
      -  "bnb",
      -  "solana",
      -  "avalanche",
      -  "xrp",
      -  "tron",
      -  "polygon",
      -  "sui"
      -]New value: +[
      +  "ethereum",
      +  "bnb",
      +  "solana",
      +  "avalanche",
      +  "xrp",
      +  "tron",
      +  "polygon",
      +  "sui"
      +]
  12. Changed5 schema fields changed
    • addedOutput schema / properties / meta
      Added value: +{
      +  "additionalProperties": false,
      +  "properties": {
      +    "contentHash": {
      +      "type": "string"
      +    },
      +    "generated": {
      +      "type": "number"
      +    },
      +    "priceUsd": {
      +      "type": "number"
      +    },
      +    "validUntil": {
      +      "type": "number"
      +    }
      +  },
      +  "type": "object"
      +}
    • addedOutput schema / properties / receipt
      Added value: +{
      +  "additionalProperties": false,
      +  "properties": {
      +    "bytes": {
      +      "type": "number"
      +    },
      +    "covers": {
      +      "type": "string"
      +    },
      +    "issuedAt": {
      +      "type": "number"
      +    },
      +    "lookup": {
      +      "type": "string"
      +    },
      +    "network": {
      +      "type": [
      +        "string",
      +        "null"
      +      ]
      +    },
      +    "nonce": {
      +      "type": "string"
      +    },
      +    "seq": {
      +      "type": "number"
      +    },
      +    "settleTx": {
      +      "type": [
      +        "string",
      +        "null"
      +      ]
      +    },
      +    "sha256": {
      +      "type": "string"
      +    },
      +    "tool": {
      +      "type": [
      +        "string",
      +        "null"
      +      ]
      +    }
      +  },
      +  "type": "object"
      +}
    • addedOutput schema / properties / results / items / properties / largest
      Added value: +{
      +  "items": {
      +    "additionalProperties": false,
      +    "properties": {
      +      "t": {
      +        "type": [
      +          "number",
      +          "null"
      +        ]
      +      },
      +      "tx": {
      +        "type": [
      +          "string",
      +          "null"
      +        ]
      +      },
      +      "valueUsd": {
      +        "type": "number"
      +      }
      +    },
      +    "type": "object"
      +  },
      +  "type": "array"
      +}
    • addedOutput schema / properties / results / items / properties / latestAt
      Added value: +{
      +  "type": [
      +    "number",
      +    "null"
      +  ]
      +}
    • addedOutput schema / properties / results / items / properties / source
      Added value: +{
      +  "type": "string"
      +}
  13. First observed

TDQS

A3.7/5.0
Behavior5/5

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

Beyond the readOnlyHint annotation, the description discloses cost (2 cents per call), a hard parameter cap (window max 168 hours), explicit data gaps (solana answers null), null semantics for exchangeTouching on bitcoin/tron/sui, and a coverage start date for bitcoin. These are exactly the behavioral traits an agent needs before invoking a paid endpoint.

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

Conciseness3/5

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

Information density is high and little is filler, but the text is a semicolon-stacked run-on with some redundancy ('in transfers and totalUsd', 'in stablecoins'). The key purpose is front-loaded, yet the coverage minutiae are not separated into scannable clauses, making it harder to parse than its length warrants.

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

Completeness4/5

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

With an output schema present, return values need not be spelled out, and the description covers thresholds, chain coverage, nulls, window limits, and price. The remaining gap is routing guidance relative to sibling flow tools, which an agent would still need to choose correctly.

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

Parameters4/5

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

Schema coverage is 100%, so the baseline is 3; the description earns an extra point by explaining what each chain enum value actually covers (native-coin vs stablecoin treatment, TRC-20, XRP native, bitcoin value-to-non-sender), which is meaning the schema's simple example text does not provide. Window semantics are only restated, not extended.

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?

The opening sentence states the resource (large transfers over 500,000 USD per chain) and the metrics returned (counts and USD totals, one row per transaction), which is specific enough to distinguish it from a generic flow tool. However, it lacks an explicit verb framing and never names or contrasts itself with the closest sibling, stablecoin_flows, so the differentiation is only implicit through the threshold and exchangeTouching definition.

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

Usage Guidelines2/5

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

There is no statement of when to pick this tool over alternatives such as stablecoin_flows or bridge_flows, and no prerequisites or exclusions framed as usage guidance. The scope details describe what data is counted, but an agent is left to infer the selecting condition entirely.

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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