# Zerion Fungible Price Chart API

> Zerion Fungible Price Chart API is a paid API for AI agents from api.zerion.io, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-20).

Returns historical price chart data for a fungible token (e.g. ETH) over a specified time period

## Facts

- Endpoint: GET https://api.zerion.io/v1/fungibles/eth/charts/day?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-20
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/zerion-fungible-price-chart-api-20130600
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Xj20PY2CWIYuDX2gxQnH2

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 zerion-fungible-price-chart-api-20130600
```

Example prompt: Can you pull up the daily price chart for ETH from Zerion — I want to see how it moved over the past day?

## When to prefer this

Use this endpoint when you need historical price chart data for a specific fungible token (like ETH) over a defined time window from Zerion's DeFi-native data source. Prefer this over generic crypto price APIs when you need data that integrates seamlessly with Zerion's broader DeFi portfolio and wallet context, or when building agents that already use Zerion for wallet and position data.

## Known failure modes

- Invalid fungible_id returns a 404 or empty data response
- Missing required query parameters (fungible_id or chart_period) returns a 400 validation error
- Invalid chart_period enum value returns a schema validation error
- Payment not included or insufficient (x402) results in a 402 payment required response
- Rate limiting may return a 429 too many requests error

## How this service works

DeFi/web3 interactions for agents

## Output

Returns a JSON object with a data field containing the chart resource ID, resource type, and attributes with historical price points for the requested fungible token over the specified period, along with self and pagination links.

## 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": [
      "fungible_id",
      "chart_period"
     ],
     "properties": {
      "fungible_id": {
       "type": "string"
      },
      "chart_period": {
       "enum": [
        "1h",
        "1d",
        "1w",
        "1m",
        "3m",
        "1y",
        "max"
       ],
       "type": "string"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "required": [
      "data"
     ],
     "properties": {
      "data": {
       "type": "object",
       "properties": {
        "id": {
         "type": "string",
         "description": "Resource ID."
        },
        "type": {
         "type": "string",
         "description": "Resource type."
        },
        "attributes": {
         "type": "object",
         "description": "Resource attributes; see https://developers.zerion.io"
        }
       }
      },
      "links": {
       "type": "object",
       "description": "Self and pagination links."
      }
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/zerion-fungible-price-chart-api-20130600/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.zerion.io](https://www.zero.xyz/host/api.zerion.io/llms.txt)