Set mark in/out points for the current timeline. Args: mark_in: Mark in frame number. mark_out: Mark out frame number.
AI agents use timeline_set_mark_in_out to create or update resources in DaVinci Resolve MCP — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your DaVinci Resolve MCP environment.
This tool modifies timeline metadata by setting in and out points, which is a reversible change to the project. It does not execute external operations, delete data, or affect financial systems. The risk is medium because incorrect mark points could disrupt an editing workflow, but changes can be undone.
From the tool's definition Tool sets mark in/out points on a timeline, which modifies project state (creates/updates timeline markers). The description explicitly states 'Set mark in/out points', indicating data modification rather than retrieval.
Documented attack patterns abuse exactly the kind of access timeline_set_mark_in_out gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and DaVinci Resolve MCP, and nothing reaches the server without passing your rules. This is the rule we recommend for timeline_set_mark_in_out:
{
"version": "1",
"default": "deny",
"tools": {
"timeline_set_mark_in_out": {
"limits": [
{
"counter": "timeline_set_mark_in_out_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}timeline_set_mark_in_out stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.
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Set mark in/out points for the current timeline. Args: mark_in: Mark in frame number. mark_out: Mark out frame number. It is categorised as a Write tool in the DaVinci Resolve MCP MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the DaVinci Resolve MCP server in PolicyLayer and add a rule for timeline_set_mark_in_out: 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 DaVinci Resolve MCP. Nothing to install.
timeline_set_mark_in_out is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the timeline_set_mark_in_out 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 timeline_set_mark_in_out. 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.
timeline_set_mark_in_out is provided by the DaVinci Resolve MCP server (samuelgursky/davinci-resolve-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 369 DaVinci Resolve MCP tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
369 DaVinci Resolve MCP tools catalogued and risk-classified — across an index of 42,500+ MCP servers.