# Arkham Transfers Histogram Simple

> Arkham Transfers Histogram Simple is a paid API for AI agents from api.arkm.com, paid per call via x402, $0.4/call, status unknown (last checked 2026-09-14).

Returns a time-bucketed histogram of on-chain transfers aggregated by USD value and count over a time range

## Facts

- Endpoint: POST https://api.arkm.com/x402/transfers/histogram-simple
- Price: $0.4/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/arkham-transfers-histogram-simple-bc4e3068
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_iyNbLuBR-N4myCl0eM1rq

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability arkham-transfers-histogram-simple-bc4e3068 -d '<json body>'
```

Example prompt: Pull the transfer volume histogram for Ethereum wallet 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045 over the past 30 days so I can see how the USD value and count of transfers changed week by week.

## When to prefer this

Use this endpoint when you need a lightweight, pre-aggregated view of transfer activity over time — specifically when you want histogram buckets of USD volume and count rather than raw individual transfers. Prefer this over full transfer list endpoints when you need trend analysis, charting, or anomaly detection across a time series without processing thousands of individual records.

## Known failure modes

- Invalid or unrecognized wallet address returns empty array or 404
- Insufficient x402 payment results in 402 Payment Required with payment details
- Time range too large may result in timeout or rate limiting
- Unsupported chain or token filter returns empty results
- Malformed POST body returns 400 Bad Request

## How this service works

Programmatic access to Arkham wallet intelligence and market data — via API keys and x402 pay-per-request.

## Output

Returns an array of time-bucketed histogram entries, each containing a timestamp (ISO 8601), total USD value of transfers in that bucket, and a count of individual transfers. Useful for charting on-chain activity trends over time.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method",
    "bodyType",
    "body"
   ],
   "properties": {
    "body": {
     "type": "object",
     "$schema": "https://json-schema.org/draft/2020-12/schema",
     "properties": {
      "to": {
       "anyOf": [
        {
         "type": "string"
        },
        {
         "type": "number"
        },
        {
         "type": "boolean"
        },
        {
         "type": "array",
         "items": {
          "anyOf": [
           {
            "type": "string"
           },
           {
            "type": "number"
           },
           {
            "type": "boolean"
           }
          ]
         }
        }
       ],
       "description": "Filter to any of a comma separated list of addresses, entities, or deposit services. You can also use special syntax li…"
      },
      "base": {
       "anyOf": [
        {
         "type": "string"
        },
        {
         "type": "number"
        },
        {
         "type": "boolean"
        },
        {
         "type": "array",
         "items": {
          "anyOf": [
           {
            "type": "string"
           },
           {
            "type": "number"
           },
           {
            "type": "boolean"
           }
          ]
         }
        }
       ],
       "description": "Filter from or to any of a comma separated list of entities or addresses."
      },
      "flow": {
       "anyOf": [
        {
         "type": "string"
        },
        {
         "type": "number"
        },
        {
         "type": "boolean"
        },
        {
         "type": "array",
         "items": {
          "anyOf": [
           {
            "type": "string"
           },
           {
            "type": "number"
           },
           {
            "type": "boolean"
           }
          ]
         }
        }
       ],
       "description": "Transfer direction."
      },
      "from": {
       "anyOf": [
        {
         "type": "string"
        },
        {
         "type": "number"
        },
        {
         "type": "boolean"
        },
        {
         "type": "array",
         "items": {
          "anyOf": [
           {
            "type": "string"
           },
           {
            "type": "number"
           },
           {
            "type": "boolean"
          
… (truncated)
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": [
  {
   "usd": 1.23,
   "time": "2024-01-01T00:00:00Z",
   "count": 1
  }
 ]
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/arkham-transfers-histogram-simple-bc4e3068/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.arkm.com](https://www.zero.xyz/host/api.arkm.com/llms.txt)