# Glassnode SVL 6m-12m — Spent Volume Lifespan 6 to 12 Months

> Glassnode SVL 6m-12m — Spent Volume Lifespan 6 to 12 Months is a paid API for AI agents from x402.glassnode.com, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-15).

Returns the total on-chain transfer volume of Bitcoin coins that were last active between 6 and 12 months ago, as a daily time series.

## Facts

- Endpoint: GET https://x402.glassnode.com/v1/metrics/indicators/svl_6m_12m
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/glassnode-svl-6m-12m-spent-volume-lifespan-6-to-12-months-fa9456fb
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_-MNY8T83Zp1zVd3X2NP2-

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 glassnode-svl-6m-12m-spent-volume-lifespan-6-to-12-months-fa9456fb
```

Example prompt: Pull the Glassnode spent volume lifespan 6m-12m metric for BTC in USD so I can see how much Bitcoin that was last active between 6 and 12 months ago has been moved recently.

## When to prefer this

Use this endpoint when you need to specifically track the spending behavior of mid-term Bitcoin holders — coins that were dormant between 6 and 12 months — as a proxy for measuring whether medium-term conviction holders are distributing. Prefer this over broader UTXO age band metrics when your analysis targets that specific lifespan cohort. This is distinct from short-term (under 6 months) or long-term (over 12 months) holder spending endpoints.

## Known failure modes

- Missing required 'a' (asset) parameter returns a 400 error
- Invalid asset symbol other than BTC returns an error since only BTC is supported
- Invalid enum values for c, f, or i parameters cause a 400 bad request
- No data available for the requested time range returns an empty array
- Payment not processed (402) if x402 payment header is missing or insufficient
- Rate limiting or service unavailability returns a 5xx error

## How this service works

Spent Volume Lifespan 6m-12m — The total transfer volume of coins that were last active between 6m and 12m ago. Data by Glassnode.

## Output

Returns a JSON array of time-series data points, each with a Unix timestamp (t) and the total transfer volume (v) of coins last active between 6 and 12 months prior, denominated in the requested currency (native BTC or USD).

## 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"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "a"
     ],
     "properties": {
      "a": {
       "enum": [
        "BTC"
       ],
       "type": "string",
       "description": "Asset symbol, e.g. BTC, ETH"
      },
      "c": {
       "enum": [
        "native",
        "usd"
       ],
       "type": "string",
       "description": "Currency for denominated values, e.g. usd, native"
      },
      "f": {
       "enum": [
        "csv",
        "json"
       ],
       "type": "string",
       "description": "Response format: json or csv"
      },
      "i": {
       "enum": [
        "24h"
       ],
       "type": "string",
       "description": "Time interval / resolution, e.g. 24h, 1w, 1month"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "array",
     "items": {
      "type": "object",
      "properties": {
       "t": {
        "type": "number"
       },
       "v": {
        "type": "number"
       }
      }
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/glassnode-svl-6m-12m-spent-volume-lifespan-6-to-12-months-fa9456fb/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402.glassnode.com](https://www.zero.xyz/host/x402.glassnode.com/llms.txt)