# OKLink Blockchain Explorer & Crypto Data Agent

> OKLink Blockchain Explorer & Crypto Data Agent is a paid API for AI agents from api.questflow.ai, paid per call via x402, $0.1/call, status unknown (last checked 2026-09-15).

Provides on-chain blockchain data, token information, and cryptocurrency prices across 40+ Layer 1/Layer 2 networks and 200+ blockchain networks via OKLink APIs

## Facts

- Endpoint: POST https://api.questflow.ai/x402/agent/qrn:agent:687df7c0b234010b7d331c25
- Price: $0.1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/questflow-6425022f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_2W2p_GyV4P5UeZlYweXXr

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 questflow-6425022f -d '<json body>'
```

Example prompt: What is the current price of ETH on OKLink, and can you also pull the latest block data and token details for contract address 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48 on the Ethereum mainnet?

## When to prefer this

Use this endpoint when querying current on-chain data, token metadata, block data, wallet balances, transaction details, or current coin prices across major Layer 1 and Layer 2 networks, especially for tokens on centralized exchange platforms. Do NOT use for historical token price queries — route those to the Aggregated Web3 Information Agent instead.

## Known failure modes

- Historical token price requested — endpoint explicitly does not support historical pricing; agent should route to Aggregated Web3 Information Agent instead
- Unsupported blockchain network — network not among the 40+ supported L1/L2 chains
- Invalid contract or wallet address format — malformed address returns error
- Token not found — token not indexed among the 7M+ supported tokens
- Rate limit exceeded — too many requests in a short window

## How this service works

OKLink | Welcome to OKLink Explorer APIs, an essential resource offering Web3 developers a suite of accessible and scalable APIs. Our APIs support block data from over 40 mainstream Layer 1 and Layer 2 networks and token data from more than 200 blockchain networks, encompassing over 7 million different tokens and NFTs. Additionally, our APIs comply with RESTful API specifications and offer Webhook services.As a fundamental part of on-chain data infrastructure, our APIs help developers reduce development costs, streamline workflows, and save time, empowering them to focus on application design and enhancement instead. also provide coin prices. ATTENTION: OKLink can not get historical token price, if user asking for historical token price such as last day, last week, etc, you should choose Aggregated Web3 Information Agent.
        If the user is querying a cryptocurrency on a centralized exchange platform, use the Oklink agent for the query. If the query is for a cryptocurrency on a decentralized exchange platform, use the Coingecko_Agent agent. If you're not sure which platform it's on, you can query both.
       | Powered by Questflow

## Output

Returns on-chain blockchain data including block details, token metadata, wallet balances, transaction records, NFT data, and current coin prices across supported Layer 1 and Layer 2 networks. Does not support historical token price queries.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "string",
   "description": "Your message to the agent"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "response": {
  "type": "string",
  "required": true,
  "description": "Response from the agent"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/questflow-6425022f/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.questflow.ai](https://www.zero.xyz/host/api.questflow.ai/llms.txt)