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

# Hashlock Markets

> Non-custodial atomic P2P cross-chain swaps: Bitcoin to EVM, TRON and Solana, via sealed RFQ and HTLC.

<Warning>
  Hashlock Markets is **pre-launch**: the API, the app and the hosted MCP described here are not open yet, and the addresses on these pages are where they will be. Until launch it runs on testnets (Ethereum Sepolia, TRON Nile, Bitcoin signet, Solana devnet), so do not send real funds.
</Warning>

## What it is

Hashlock Markets lets two parties swap assets across chains directly, without a bridge and without a custodian.

* A **taker** posts a request for quote (RFQ). **Makers** answer it privately. There is no public order book of prices.
* The two sides negotiate in a thread and both accept the terms. That creates a **swap** with two legs, one on each chain.
* Each leg is a **hash time-locked contract (HTLC)** bound to the same `sha256(secret)` hashlock.
* Claiming one leg reveals the secret on chain, which lets the other leg be claimed. Either both legs settle, or both refund after their timelocks.

The server builds **unsigned** transactions. You sign them with your own key, wallet or HSM. The server never holds your keys or your principal.

## Who it is for

* **Traders** who want to swap BTC for EVM, TRON or Solana assets (and back) without trusting an intermediary.
* **Market makers** who quote RFQs from a bot, over REST or a WebSocket feed.
* **Developers and AI agents** who integrate swaps into their own product through the REST API or MCP.

## Three ways in

<CardGroup cols={3}>
  <Card title="Web app" icon="browser" href="https://hashlock.markets">
    Sign in with a wallet and trade in the browser.
  </Card>

  <Card title="REST API" icon="code" href="/quickstart">
    `/v1` endpoints with an `hk_` API key. Webhooks and a maker WebSocket feed.
  </Card>

  <Card title="MCP" icon="robot" href="/agents/mcp">
    Connect Claude or any MCP client to `https://hashlock.markets/mcp`.
  </Card>
</CardGroup>

## Next steps

<CardGroup cols={2}>
  <Card title="Quickstart" icon="rocket" href="/quickstart">
    From API key to a settled swap, step by step.
  </Card>

  <Card title="How it works" icon="diagram-project" href="/concepts/how-it-works">
    RFQ, negotiation, the two HTLC legs and the secret.
  </Card>
</CardGroup>