open-wallet is a tiny “open wallet request” page.

It reads a JSON-RPC request from the URL, shows it to the user, lets them connect their wallet, switches to the requested chain, and executes the request.

Deployed

• https://tx.steer.fun

URL Format

Required query params:

• method: JSON-RPC method (e.g. eth_sendTransaction, personal_sign, eth_signTypedData_v4, wallet_sendCalls)
• chainId: integer chain id (the app will attempt to switch chains before executing)
• params: URL-encoded JSON (either an object or an array)

Optional:

• redirect_url: redirect target after execution

redirect_url templating (no bridge)

If redirect_url contains {{...}}, the app will treat it as a template and replace placeholders instead of appending result=... query params.

Placeholders:

• {{result}}: URL-encoded result string (or URL-encoded JSON.stringify(result))
• {{result_raw}}: unencoded result string (or JSON.stringify(result))
• {{resultType}}: string or json
• {{error}}: URL-encoded error message
• {{error_raw}}: unencoded error message

Example (Telegram share):

https://tx.steer.fun/?method=eth_sendTransaction&chainId=1&params=...&redirect_url=https%3A%2F%2Ft.me%2Fshare%2Furl%3Furl%3Dhttps%253A%252F%252Ftx.steer.fun%252F%26text%3DTx%2520hash%253A%2520%7B%7Bresult%7D%7D

Redirect query params appended (when redirect_url has no {{...}} placeholders):

• Success:
  • resultType=string and result=<value> OR
  • resultType=json and result=<JSON.stringify(value)>
• Failure:
  • error=<message>

Examples

personal_sign

https://tx.steer.fun/?method=personal_sign&chainId=1&params=%7B%22message%22%3A%22hello%22%7D

eth_sendTransaction

https://tx.steer.fun/?method=eth_sendTransaction&chainId=1&params=%7B%22to%22%3A%220x4c5Ce72478D6Ce160cb31Dd25fe6a15DC269592D%22%2C%22data%22%3A%220xd09de08a%22%7D

Local Dev

bun install
bun run dev

Agent Skill

See skills/open-wallet/SKILL.md for the “agent-facing” usage guide.