Textile FX

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How to become a filler ​

Fillers are the market makers of Textile FX. They answer Swap quote requests with firm prices, traders execute those quotes, and the filler earns the spread they configured. Quoting Swap covers the knobs.

You do not need to write code. Stitch, the open-source filler bot, does the whole job out of the box. Download the desktop app, fund a wallet, set your spreads and limits in the browser panel, connect to Textile, and press Start.

What you need ​

USDT inventory on the corridor's network. This is your working capital. It buys the counter-asset (cNGN, wARS, wBRL, WETH) at your prices.

An exit for the counter-asset. Every buy-side fill leaves you holding the non-USD side. You need your own off-ramp or hedge for it. The protocol does not do this for you.

A dedicated hot wallet for the bot, holding your trading inventory plus a little native token for gas. Never your treasury key.

A machine that stays on. Your own computer is fine while you try things out. For quoting around the clock, use a small server or one of the other install options below.

A price feed for the corridor, a simple HTTP endpoint returning the current price. Compare more than one source. Your quotes are only as good as your feed.

Onboarding details from Textile: API and contract addresses for your corridor, plus testnet access to practice on. Write to contact@textilecredit.com.

Setting up Stitch ​

Two recommended ways to run Stitch: the desktop app on the machine in front of you, or the Docker panel on a server. Desktop works on macOS, Windows, and Linux. It is a light menu-bar or tray controller that starts a local panel in your browser, with no Docker and no terminal.

  1. Download the app for your platform:
  2. Create your bot. On first launch the app asks you to pick a panel password, entered twice, and only a hash is stored. It opens the panel in your browser. Pick your corridor, paste your bot wallet's private key, and press Create. Stitch writes the configuration and stores the key where only your user can read it. To log in later, open the panel from the menu or tray and enter that password.
  3. Approve, connect, go live. In Tools → Approve allowances, press Approve allowances once so Permit2 can pull the tokens you quote. That costs a small gas fee. Then go to Settings → RFQ → Connect. Start only after that. A new bot quotes nothing without a maker key.

Quote Swap (RFQ) ​

New bots quote Swap via firm RFQ.

  1. In the Stitch panel, open Settings → RFQ and press Connect to Textile. The bot signs with the funding wallet and Textile saves the credential. You never paste a key. Connect alone does not put you in the fan-out.
  2. Give an email address you own and click the link Textile sends you. That covers every RFQ corridor on every chain, including pairs listed later.
  3. Press Check status in the panel and the bot seats itself on the RFQ corridors for its pair. It also picks this up on its own within a minute. Start only after that. A bot with no credential quotes nothing.

If the link never arrives, check spam and press the button again to resend. If the panel says Textile blocked the maker, or that your pair is not on an RFQ corridor, email contact@textilecredit.com. Do not invent a corridor slug in Advanced.

Leave Fill users' resting limit orders on if you also want to take Limit flow. That taker is a separate leg from answering RFQ.

If an older bot is not on RFQ yet, press Switch to RFQ only. Swap cannot use inventory that is still pledged elsewhere.

Quit Stitch from the menu or tray to stop the local panel. For quoting around the clock, use a Docker or server install on a machine that stays on.

Other ways to run it ​

  • With an AI coding agent: install the stitch skill in Claude Code or Codex, or paste the install prompt from the repo README. The agent installs the Stitch web UI, local password or server Tailscale, and opens it. You finish bot setup in the browser.
  • Docker: prebuilt image on GHCR. Pass the config and key as mounted files or environment variables.
  • Linux server: installer script plus a systemd service.
  • Manual install, for operators who live in a terminal: macOS or Windows, plus every release with checksums.

Whichever path you pick, the sequence is the same. Keep the wallet key in a separate key file, never in the config. Run stitch approve once. Then go live small. --dry-run checks config and skips firm RFQ responses. It does not simulate a sized quote. After any config change, restart the bot. It reads the config at startup.

How you earn ​

Your spread is whatever you configure. Quote 10 basis points off mid and you earn roughly that on every fill, while the taker pays the per-chain protocol fee on top, 1 bps on BSC and Celo, 5 bps on Ethereum. Stitch only signs quotes your wallet can actually cover, so your funds move only when a trader executes you.

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