warp-fork

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Fork a warp route from the local HTTP registry for development and testing. Use when the goal is try to simulate transactions on a set of anvil forks.

hyperlane-xyz By hyperlane-xyz schedule Updated 2/7/2026

name: warp-fork description: Fork a warp route from the local HTTP registry for development and testing. Use when the goal is try to simulate transactions on a set of anvil forks.

Warp Fork

Fork a warp route using the local HTTP registry.

Instructions:

  1. Check if http://localhost:3333 is running. If not, run the start-http-registry SKILL. If that fails, use AskUserQuestion to prompt the user for an alternate registry URL to use instead of http://localhost:3333.

  2. First, use AskUserQuestion to prompt the user for the warp route ID:

    • Question: "Which warp route would you like to fork?"
    • Header: "Warp Route"
    • Options: Provide 2-3 common examples if known, otherwise use generic placeholders. Note that the fork may fail if the warp routes are invalid. Re-prompt the user!
  3. Run the command in the background:

    pnpm -C typescript/cli exec tsx cli.ts warp fork --registry $REGISTRY --warpRouteId $WARP_ROUTE_ID
    
    • Use the registry URL from step 0 for $REGISTRY (http://localhost:3333 by default, or user-provided if the local registry failed)
    • Use run_in_background: true so it doesn't block the conversation.
  4. After starting, report the task/shell ID and the fork registry server port back to the user.

  5. Remind the user they can stop it later with KillShell using that ID

Prerequisites:

  • The http-registry server must be running on port 3333. If not, start it first with /start-http-registry.

Example output:

Started warp fork for EZETH/ethereum-megaeth in background (shell ID: shell_abc123). To stop it later, I can use KillShell with that ID.

Install via CLI
npx skills add https://github.com/hyperlane-xyz/hyperlane-monorepo --skill warp-fork
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