Release a timeline session and free memory.
AI agents call release_timeline_capture to retrieve information from Screen MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This is a session management utility that deallocates memory after timeline capture operations. While it affects internal state (freeing resources), it has no side effects on user data, external systems, or system behavior beyond resource cleanup. It represents the least privileged action in the server's operation hierarchy and poses minimal security risk if misused by an AI agent.
From the tool's definition The tool 'release_timeline_capture' is a cleanup/resource management function that 'frees memory' from a timeline capture session. It performs no data retrieval, modification, creation, deletion, or external execution—it simply releases allocated resources.
Attacks that exploit this kind of access
Release a timeline session and free memory. It is categorised as a Read tool in the Screen MCP MCP Server, which means it retrieves data without modifying state.
Register the Screen MCP server in PolicyLayer and add a rule for release_timeline_capture: 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 Screen MCP. Nothing to install.
release_timeline_capture is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the release_timeline_capture 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 release_timeline_capture. 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.
release_timeline_capture is provided by the Screen MCP server (jeandelest/screen-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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