diff_portfolio_snapshots
Compare two of your own portfolio snapshots and return the per-dimension movement between them. snapshot_id is always the 'to' side; against is the 'from' baseline, defaulting to your newest snapshot in the same project or portfolio strictly older than it -- the 'what changed since last time' rea...
This record as markdown: /tools/com-meta-council-decision-intelligence/diff-portfolio-snapshots.md
What diff_portfolio_snapshots does on Meta Council
AI agents call diff_portfolio_snapshots to retrieve information from Meta Council without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
| Parameter | Type | Required | Description |
|---|---|---|---|
against | string | — | The baseline to compare against -- the 'from' side. Omit for your newest snapshot older than snapshot_id. |
snapshot_id | string | Yes | The snapshot being examined -- the 'to' side, from list_portfolio_snapshots. |
Parameters from the server's own tool schema.
Why diff_portfolio_snapshots is rated Low
Even though diff_portfolio_snapshots only reads data, uncontrolled read access leaks sensitive information and racks up API costs: an agent caught in a retry loop can make thousands of calls a minute without anyone noticing.
Attacks that exploit this kind of access
The rule that runs diff_portfolio_snapshots safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Meta Council, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For diff_portfolio_snapshots, this is the rule to start with:
diff_portfolio_snapshots is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Meta Council, apply this rule, and every diff_portfolio_snapshots call is checked against it from then on.
Questions about diff_portfolio_snapshots
Compare two of your own portfolio snapshots and return the per-dimension movement between them. snapshot_id is always the 'to' side; against is the 'from' baseline, defaulting to your newest snapshot in the same project or portfolio strictly older than it -- the 'what changed since last time' read, which is reported as not found when this is your first snapshot. Comparing an older snapshot against a newer one is allowed and disclosed rather than silently confusing: the result says whether the pair is chronological and the elapsed days go negative. Both sides are immutable, so a diff is reproducible indefinitely. Requires authentication and the tickets:read scope. It is categorised as a Read tool in the Meta Council MCP Server, which means it retrieves data without modifying state.
diff_portfolio_snapshots accepts 2 parameters: against, snapshot_id. Required: snapshot_id. The full parameter table on this page comes from the server's own tool schema.
Register the Meta Council MCP server in PolicyLayer and add a rule for diff_portfolio_snapshots: 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 Meta Council. Nothing to install.
diff_portfolio_snapshots 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 diff_portfolio_snapshots 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 diff_portfolio_snapshots. 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.
diff_portfolio_snapshots is provided by the Meta Council MCP server (https://meta-council.com/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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