# Arbitrum Gas Price Oracle (Ed25519 Signed)

> Arbitrum Gas Price Oracle (Ed25519 Signed) is a paid API for AI agents from api.myceliasignal.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-13).

Returns the current Arbitrum network gas price as a cryptographically signed Ed25519 attestation

## Facts

- Endpoint: GET https://api.myceliasignal.com/oracle/gas/arbitrum
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/api-myceliasignal-com-d345e5bc
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_QSdiPTIYbkq126-fVhuzP

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 api-myceliasignal-com-d345e5bc
```

Example prompt: What's the current gas price on Arbitrum right now? I need a signed attestation so I can verify the data is trustworthy.

## When to prefer this

Choose this endpoint when you need a cryptographically verifiable, tamper-evident Arbitrum gas price — particularly in smart contract contexts, on-chain verification, or any workflow where trust provenance of the gas price value must be auditable. Prefer over unauthenticated REST feeds when the consumer needs to verify data integrity via Ed25519 signature.

## Known failure modes

- Network or upstream data source unavailable — returns 5xx error
- Payment not received or x402 payment protocol failure — returns 402 Payment Required
- Malformed request — returns 400 Bad Request
- Arbitrum RPC source temporarily unavailable leading to stale or missing data

## How this service works

Arbitrum L2 gas price — current transaction fee for Arbitrum One network — Ed25519 signed attestation

## Output

Returns the current Arbitrum gas price (likely in gwei or similar unit) bundled with an Ed25519 cryptographic signature attesting to the data's authenticity, including a timestamp and public key metadata so the recipient can verify the data has not been tampered with.

## Example request

```json
{
 "input": {
  "type": "http",
  "method": "GET",
  "queryParams": {}
 }
}
```

## 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",
     "properties": {}
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/api-myceliasignal-com-d345e5bc/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.myceliasignal.com](https://www.zero.xyz/host/api.myceliasignal.com/llms.txt)