recent_sessions

THE RISK

Low Risk

Why recent_sessions needs a policy

This tool retrieves historical session data from the workspace memory system. It performs a query operation to surface past session summaries without creating, modifying, deleting, or executing anything. The blast radius is minimal: an AI agent listing sessions cannot cause harm beyond potential information disclosure of already-stored summaries. Classified as Read with low severity.

From the tool's definition Tool name is 'recent_sessions' and description states 'List recent session summaries' — a retrieval operation with no modification or side effects.

Documented attack patterns abuse exactly the kind of access recent_sessions gives an agent:

POLICY

How to control recent_sessions

PolicyLayer is an MCP gateway — it sits between your AI agents and Project Tessera, and nothing reaches the server without passing your rules. This is the rule we recommend for recent_sessions:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "recent_sessions": {}
  }
}

recent_sessions is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.

Create a free account and register Project Tessera — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

CAP THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

More Project Tessera tools

Execute migrate_data Run data migration. Write organize_files Organize files in the workspace. Write sync_documents Incremental sync — only new/changed/deleted files. Write toggle_auto_learn Toggle or check auto-learning on/off. Write digest_conversation Extract and save knowledge from the current session. Write import_conversations Import conversations and extract knowledge. Write import_from_ai Import memories from another AI tool's export. Write learn Save and immediately index new knowledge.

All 43 Project Tessera tools →

Read tools on other servers

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Go deeper

Roll out MCP under one policy → Per-person scoped tokens, one central policy, and full audit across every server your team connects.
The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Data exfiltration → How read access becomes an exfiltration channel when chained with untrusted content.
MCP token cost → What connecting this server costs in context-window tokens on every request.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →
PolicyLayer vs alternatives → How deterministic, per-call MCP policy compares with gateways, identity layers, and authorisation platforms.

FAQ

Questions about recent_sessions

What does the recent_sessions tool do? +

List recent session summaries. It is categorised as a Read tool in the Project Tessera MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on recent_sessions? +

Register the Project Tessera MCP server in PolicyLayer and add a rule for recent_sessions: 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 Project Tessera. Nothing to install.

What risk level is recent_sessions? +

recent_sessions is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit recent_sessions? +

Yes. Add a rate_limit block to the recent_sessions 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.

How do I block recent_sessions completely? +

Set action: deny in the PolicyLayer policy for recent_sessions. 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.

What MCP server provides recent_sessions? +

recent_sessions is provided by the Project Tessera MCP server (besslframework-stack/project-tessera). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Project Tessera tool call.

Start from Project Tessera, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →