Pilot-tier: redeem a single-use handoff token previously minted by
AI agents invoke oc_pilot_handoff_redeem to trigger actions in OpenChrome. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call — builds kicked off, notifications sent, workflows started.
Redeeming a handoff token is a one-time action that transfers browser session control or authentication state. It is an external operation that changes system state (consumes the token, establishes a session), placing it in Execute. Severity is high because misuse could hijack or transfer authenticated browser sessions. Confidence is moderate because the description is truncated and incomplete.
From the tool's definition 'redeem a single-use handoff token previously minted by' — triggers an authentication/session handoff operation using a token, which is an external operation with state-changing effects
Documented attack patterns abuse exactly the kind of access oc_pilot_handoff_redeem gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and OpenChrome, and nothing reaches the server without passing your rules. This is the rule we recommend for oc_pilot_handoff_redeem:
{
"version": "1",
"default": "deny",
"tools": {
"oc_pilot_handoff_redeem": {
"limits": [
{
"counter": "oc_pilot_handoff_redeem_rate",
"window": "minute",
"max": 10,
"scope": "grant"
}
]
}
}
}oc_pilot_handoff_redeem stays usable, but rate-capped — a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.
Free to start. No card required.
Pilot-tier: redeem a single-use handoff token previously minted by. It is categorised as a Execute tool in the OpenChrome MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Register the OpenChrome MCP server in PolicyLayer and add a rule for oc_pilot_handoff_redeem: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches OpenChrome. Nothing to install.
oc_pilot_handoff_redeem is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.
Yes. Add a rate_limit block to the oc_pilot_handoff_redeem rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for oc_pilot_handoff_redeem. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
oc_pilot_handoff_redeem is provided by the OpenChrome MCP server (shaun0927/openchrome). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 106 OpenChrome tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
106 OpenChrome tools catalogued and risk-classified — across an index of 42,500+ MCP servers.