# Zerion Fungible Token Max-Period Price Chart by Contract

> Zerion Fungible Token Max-Period Price Chart by Contract 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 the all-time price chart data for a fungible token identified by its on-chain contract address and chain ID

## Facts

- Endpoint: GET https://api.zerion.io/v1/fungibles/by-implementation/charts/max?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-token-max-period-price-chart-by-contract-fd3de55d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_S1n-oaLhxw1HU7lduw9CJ

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-token-max-period-price-chart-by-contract-fd3de55d
```

Example prompt: Can you pull the all-time price chart for the USDC token on Ethereum — the contract is 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48 — priced in USD?

## When to prefer this

Use this endpoint when you need the complete all-time price history (max period) for a specific fungible token identified by its on-chain contract address and chain. Prefer this over general market data APIs when you need DeFi-native, multi-chain token data anchored to a specific contract implementation rather than a ticker symbol, especially for long-tail or newer DeFi tokens not covered by centralised exchanges.

## Known failure modes

- Missing required query params (chart_period or implementation) returns a 400 Bad Request
- Invalid or unsupported chain ID / contract address returns empty or 404 response
- Unsupported currency code may return an error or default to USD
- Rate limiting or payment failure (x402) returns 402 Payment Required
- Token not indexed by Zerion returns no chart data

## How this service works

DeFi/web3 interactions for agents

## Output

Returns a JSON object containing the token's resource ID, type, and chart attributes (price data points over the max time period), along with self/pagination links. The attributes field references the full schema at developers.zerion.io and includes time-series price data denominated in the requested fiat currency.

## 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": [
      "chart_period",
      "implementation"
     ],
     "properties": {
      "currency": {
       "type": "string",
       "description": "Fiat currency for prices and values (defaults to usd)"
      },
      "chart_period": {
       "enum": [
        "1h",
        "1d",
        "1w",
        "1m",
        "3m",
        "1y",
        "max"
       ],
       "type": "string"
      },
      "implementation": {
       "type": "string",
       "description": "`<chain_id>` or `<chain_id>:<implementation_address>`"
      }
     }
    }
   },
   "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-token-max-period-price-chart-by-contract-fd3de55d/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)