Bridge Origin Safe Slash Override

SKILL: Bridge Origin Safe Slash Override

Domain: remote-input-safety Trigger: Apply when remotely delivered input should still default to plain-text slash handling, but a trusted bridge path needs to selectively re-enable only the slash commands that are safe to execute remotely. Source Pattern: Distilled from reviewed remote-control, bridge transport, and capability-advertising implementations.

Core Method

Keep remote slash-command parsing disabled by default for bridge-delivered input. If a remote message starts with /, inspect it locally first and resolve whether it maps to a known command. Re-enable slash handling only when the resolved command is explicitly bridge-safe; otherwise, intercept unsafe known commands with a friendly local denial and leave unknown slash text as plain text. This preserves the defensive default while still allowing a narrow, reviewed remote command surface.

Key Rules

• Preserve the “treat slash text as plain text” default at enqueue time so every other fast path still sees the defensive baseline.
• Reopen slash handling only after all three checks pass: the message is bridge-originated, starts with /, and resolves to a command that passes bridge-safety filtering.
• Treat known unsafe commands, especially local-jsx or terminal-only ones, as a local UX case rather than a model prompt: return a friendly denial such as "config isn't available over Remote Control." and stop before querying.
• Let unknown or malformed slash text fall through as plain text rather than converting it into a new local error surface for remote users.
• Keep discovery aligned with execution by advertising only bridge-safe commands to remote clients whenever possible; the override should narrow execution, not widen the visible command set.

Example Application

A mobile bridge sends /deploy-docs. The bridge layer parses it locally, confirms it is on the remote-safe allowlist, and then hands it to normal slash-command execution. The same bridge sends /config; the command resolves but is not remote-safe, so the system responds locally with a denial message. If the bridge sends /shrug and that text does not resolve to a known command, it stays plain text and is handled like an ordinary message.

Anti-Patterns (What NOT to do)

• Do not disable slash skipping for all bridge traffic up front; that reopens the exact remote-command surface the default suppression was meant to close.
• Do not pass known unsafe slash commands through as ordinary model text; the model should not have to interpret config after local policy already knows it is disallowed remotely.
• Do not reject unknown bridge slash text with a new "Unknown skill" style error; preserving plain-text fallback avoids breaking ordinary remote messages that happen to start with /.

Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

• Author: ychampion
• Source: ychampion/cskill-agents
• License: MIT
• Homepage: https://x.com/YashasGunderia/status/2039990540016693692?s=20

Install and usage instructions live in the source repository linked above.