Show chronological timeline of frames. Returns frames ordered by creation time. Args: file: Path to the .mv2 memory file limit: Maximum entries to show reverse: Show newest first (default: oldest first) since: Filter from Unix timestamp (milliseconds) until: Filter until Unix timestamp (milliseco...
AI agents call memvid_timeline to retrieve information from Memvid without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and displays chronological data from a memory file with filtering options. It has no side effects, does not modify data, execute code, delete records, or move money. It is purely a read operation that queries existing memory frames by timestamp.
From the tool's definition Tool description states 'Show chronological timeline of frames' and 'Returns frames ordered by creation time'. The parameters (file, limit, reverse, since, until) are all read-only query filters.
Attacks that exploit this kind of access
Show chronological timeline of frames. Returns frames ordered by creation time. Args: file: Path to the .mv2 memory file limit: Maximum entries to show reverse: Show newest first (default: oldest first) since: Filter from Unix timestamp (milliseconds) until: Filter until Unix timestamp (milliseconds) Returns: Array of frames with timestamps. It is categorised as a Read tool in the Memvid MCP Server, which means it retrieves data without modifying state.
Register the Memvid MCP server in PolicyLayer and add a rule for memvid_timeline: 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 Memvid. Nothing to install.
memvid_timeline 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 memvid_timeline 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 memvid_timeline. 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.
memvid_timeline is provided by the Memvid MCP server (tapiocapioca/memvid-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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