# Glassnode ETH2 Estimated Annual Issuance ROI Per Validator

> Glassnode ETH2 Estimated Annual Issuance ROI Per Validator 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 theoretical ETH-denominated annual return (%) a 32-ETH stake validator can expect from ETH issuance, based on current validator count.

## Facts

- Endpoint: GET https://x402.glassnode.com/v1/metrics/eth2/estimated_annual_issuance_roi_per_validator
- 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-eth2-estimated-annual-issuance-roi-per-validator-850f14a0
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_XmJcnchBf59u4l79vVW1I

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-eth2-estimated-annual-issuance-roi-per-validator-850f14a0
```

Example prompt: What's the estimated annual issuance ROI for an Ethereum validator right now, based on Glassnode data? Give me the daily figures in JSON format.

## When to prefer this

Use this endpoint when you need authoritative, Glassnode-sourced time-series data on Ethereum validator staking yield from issuance. Prefer this over generic staking calculators when you need historical daily data series, want on-chain derived metrics rather than projected estimates, or are building analytics on ETH2 validator economics at scale.

## Known failure modes

- Missing required 'a' query parameter (must be 'ETH') returns a 400 error
- Invalid format value for 'f' parameter returns a 400 error
- Payment not included or insufficient USDC returns a 402 Payment Required response
- Rate limiting or quota exceeded returns a 429 error
- Temporary Glassnode data unavailability returns a 503 error

## How this service works

Estimated Annual Issuance ROI per validator — Estimated Annual Issuance ROI per Validator is the theoretical ETH-denominated annual return (%) on a 32-ETH stake validator, with ETH issuance determined by the number of validators participating in consensus. Data by Glassnode.

## Output

An array of time-series data points, each containing a Unix timestamp (t) and the estimated annual issuance ROI percentage (v) for a 32-ETH Ethereum validator, reflecting the theoretical ETH-denominated yield driven by the number of active validators.

## 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": [
        "ETH"
       ],
       "type": "string",
       "description": "Asset symbol, e.g. BTC, ETH"
      },
      "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-eth2-estimated-annual-issuance-roi-per-validator-850f14a0/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)