coinank-openapi

Overview

CoinAnk OpenAPI gives agents access to cryptocurrency derivatives market data across K-lines, ETFs, open interest, long/short ratios, funding rates, liquidations, order flow, whale activity, and related analytics.

The plugin supports direct CoinAnk API-key access and pay-per-call access through Agent Payments Protocol / x402 via the latest OKX payment skill, including the newer charge payment method when required by the OKX payment flow.

Prerequisites

• Optional: a CoinAnk API key with the required API level for the requested endpoint.
• For pay-per-call access: install or update okx/onchainos-skills so okx-agent-payments-protocol and okx-agentic-wallet are available.
• Network access to open-api.coinank.com.

Quick Start

1. Ask the agent to run the coinank-openapi quickstart flow to review access options and choose API-key mode or Agent Payments Protocol / x402 pay-per-call mode.
2. If you have a CoinAnk API key, set COINANK_API_KEY and call the desired endpoint with the apikey header.
3. If you do not have an API key, send the original request first and let CoinAnk return an HTTP 402 Payment Required challenge when pay-per-call access is available.
4. Use the latest okx-agent-payments-protocol skill to complete the required proof, authorization, or charge flow, then replay the same request with the generated payment data.