MagicFill
The host built-in browser analyzes the page; MagicFill only materializes and applies exact protected values and one exact final click.
- No navigation, observation, page analysis, search, or challenge handling.
- Resolves exact value-free targets before protected materialization.
- Returns only target identifiers and opaque receipts.
- Works behind thin Codex, Claude, OpenClaw, Hermes, and future host adapters.
One Page-Control Owner
The current agent runtime built-in browser owns navigation, observation, form analysis, ordinary values, exact target selection, and result interpretation. MagicFill never starts or controls a browser.
Exact Protected Actuation
The host browser supplies one stable document identity and closed exact target contracts. MagicFill resolves every target first, then materializes and applies approved protected values without exposing them to the host agent.
const { fillResolvedTargets } = await import('./scripts/magicfill-browser.mjs'); const result = await fillResolvedTargets({ actuator: hostActuator, page, fields: resolvedProtectedFields,});Value-Free Receipts
Fill and click results contain target identifiers, status, and opaque authority only. The host browser observes the page again and decides what the result means.
Generic Host Contract
Codex App has the concrete acceptance adapter. Claude, OpenClaw, Hermes, and future hosts implement the same narrow actuator interface and become supported only after passing the real form matrix.