> ## Documentation Index
> Fetch the complete documentation index at: https://docs.onebalance.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Toolkit Changelog

> Stay updated with the latest launches, chain integrations, improvements, and fixes in the OneBalance Toolkit.

export const ChangelogItem = ({label, children, link, imageUrl}) => {
  return <div className="flex flex-col gap-6 mb-6 relative md:flex-row">
      <div className="text-sm font-semibold text-primary min-w-[150px] dark:text-primary">
        {label}
      </div>
      <div className="flex flex-col">
        {imageUrl && <img className="blur-0 aspect-video rounded-lg border border-neutral-200 object-cover m-0 mb-6 dark:border-neutral-800" src={imageUrl} alt="OneBalance" />}
        <a href={link} className="block transition border-none font-normal hover:opacity-90">
          {children}
        </a>
      </div>
    </div>;
};

<ChangelogItem label="September 23rd, 2025" link="/changelog/2025-09-23-quote-fail-reason" imageUrl="https://storage.googleapis.com/onebalance-public-assets/changelog/fail-reason.png">
  ## Enhanced Error Handling: Fail Reason Field

  Status endpoints now include detailed fail reasons when quotes are refunded. Get specific, actionable feedback for different failure scenarios - from slippage issues to insufficient balance - improving both debugging and user experience.
</ChangelogItem>

<ChangelogItem label="September 22nd, 2025" link="/changelog/2025-09-22-slippage-tolerance" imageUrl="https://storage.googleapis.com/onebalance-public-assets/changelog/slippage-tolerance.png">
  ## Slippage Tolerance Configuration

  Configure slippage tolerance to reduce quote refunds and improve transaction success rates. Optional parameter works with all quote endpoints while maintaining full backward compatibility.
</ChangelogItem>

<ChangelogItem label="August 7th, 2025" link="/changelog/2025-08-07-7702-support" imageUrl="https://storage.googleapis.com/onebalance-public-assets/changelog/7702-support.png">
  ## EIP-7702 Support: Cross-Chain Delegation

  Enable bundling of delegation + bridging + execution in single transactions. Transform EOAs into smart accounts through delegation while preserving existing addresses.
</ChangelogItem>

<ChangelogItem label="July 31st, 2025" link="/changelog/2025-07-31-hosted-onebalance-mcp-server" imageUrl="https://storage.googleapis.com/onebalance-public-assets/changelog/mcp.png">
  ## Hosted OneBalance MCP Server

  Connect OneBalance to Claude, Cursor, and other AI tools with zero setup. Our hosted MCP server at `https://docs.onebalance.io/mcp` provides instant access to OneBalance API and documentation - no installations required.
</ChangelogItem>

<ChangelogItem label="July 17th, 2025" link="/changelog/2025-07-17-solana-support" imageUrl="https://storage.googleapis.com/onebalance-public-assets/changelog/solana-support.png">
  ## Solana Support Now Available (Beta)

  Cross-chain swaps and transfers between Solana and EVM chains are now supported through new API endpoints. Experience true chain abstraction with SOL ↔ EVM swaps across Solana, Arbitrum, Ethereum, and more.
</ChangelogItem>

<ChangelogItem label="June 16th, 2025" link="/changelog/2025-06-16-mcp-beta" imageUrl="https://storage.googleapis.com/onebalance-public-assets/changelog/mcp-beta.jpeg">
  ## Announcing our beta MCP API and Doc Integration

  Integrate OneBalance directly into your AI workflow using Claude or Cursor. Our AI-friendly API and docs make it easy to build a one-click UX across any chain, action, or token. It's time to vibe code a 10x UX for your app.
</ChangelogItem>

<ChangelogItem label="June 10th, 2025" link="/changelog/2025-06-10-new-docs" imageUrl="https://storage.googleapis.com/onebalance-public-assets/changelog/new-docs.png">
  ## OneBalance Documentation is Live

  Our new developer documentation is now available! Get started with step-by-step guides, interactive API reference, and AI integration examples.
</ChangelogItem>