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Sarnav07
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okx-onchain-gateway

Broadcast pre-signed transactions and estimate gas across multiple chains.

Updated Apr 8, 2026
Search Tags:#broadcast#gateway#onchain#gas-estimation#transaction-simulation#order-tracking
One-click install
npx skills add https://github.com/Sarnav07/Nexus.AI --skill okx-onchain-gateway-sarnav07
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: okx-onchain-gateway
Source: https://github.com/Sarnav07/Nexus.AI/tree/main/.agents/skills/okx-onchain-gateway
Command: npx skills add https://github.com/Sarnav07/Nexus.AI --skill okx-onchain-gateway-sarnav07

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This skill solves the problem of securely broadcasting pre-signed on-chain transactions and providing real-time gas estimates and order tracking across multiple blockchains, enabling developers to interact with on-chain systems without handling signing.

Core Features & Use Cases

  • Broadcast pre-signed transactions to supported chains, enabling on-chain execution without exposing private keys.
  • Estimate gas prices and gas limits across chains, allowing safe and cost-aware transaction planning.
  • Simulate transactions (dry-run) to preview outcomes before broadcasting, and track resulting status or failures.
  • Track broadcast orders and retrieve on-chain transaction hashes and confirmations for auditing and reconciliation.

Quick Start

Broadcast a pre-signed transaction to the desired chain using onchainos gateway.

Frequently Asked Questions about okx-onchain-gateway

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I broadcast pre-signed on-chain transactions across multiple chains?▼

To broadcast pre-signed on-chain transactions, you provide the pre-signed transaction payload, wallet address, and target chain name to the gateway, which executes the broadcast with security checks and optional MEV protection.

Can I estimate gas prices and gas limits for Ethereum, Solana, and other chains?▼

Yes, you can estimate gas prices and gas limits for Ethereum, Solana, XLayer, Base, BSC, Arbitrum, Polygon, and 20+ other supported chains to enable safe and cost-aware transaction planning.

How do I simulate on-chain transactions before broadcasting them?▼

You simulate on-chain transactions by performing a dry-run through the gateway to preview execution outcomes and track potential status failures before committing to the actual broadcast.

Do I need to expose my private keys to use this transaction broadcast gateway?▼

No, you do not need to expose private keys because the gateway requires a pre-signed transaction and wallet address, handling only the execution and order tracking without signing.

How do I track broadcast orders and retrieve on-chain transaction hashes?▼

You track broadcast orders and retrieve on-chain transaction hashes by querying the gateway post-broadcast, allowing you to retrieve confirmations for auditing and reconciliation purposes.

What are the limitations of using a pre-signed transaction gateway for on-chain execution?▼

A limitation of using a pre-signed transaction gateway is that it cannot sign transactions itself, requiring you to securely generate and provide the pre-signed transaction payload beforehand.

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