# set-session-data

Store data in the session

Agent View of the PolicyLayer registry record for `set-session-data`. HTML page: https://policylayer.com/tools/frontmcp/set-session-data

## Facts

- Tool: `set-session-data`
- Server: Frontmcp (`agentfront/frontmcp`) — https://policylayer.com/tools/frontmcp.md
- Homepage: https://github.com/agentfront/frontmcp
- Risk category: Write (Medium risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Rate-limited

## Example call (MCP tools/call, JSON-RPC 2.0)

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "set-session-data",
    "arguments": {}
  }
}
```

## Why set-session-data is rated Medium

This tool writes data to a session object, which is a reversible operation. While session data modification could affect subsequent requests or expose sensitive information if misused, it does not permanently delete data (not Destructive), move money (not Financial), or execute arbitrary code (not Execute).

From the tool's own definition: "Tool name contains 'set' and description states 'Store data in the session', indicating the tool creates or modifies session-scoped data."

## Use case

AI agents use set-session-data to create or update resources in Frontmcp, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Frontmcp environment.

## Recommended policy (PolicyLayer)

Verdict: **Rate-limited**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Frontmcp:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "set-session-data": {
      "limits": [
        {
          "counter": "set-session-data_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}
```

## Other tools on Frontmcp (205)

- `clear-audit-log` — Destructive — https://policylayer.com/tools/frontmcp/clear-audit-log.md
- `clear-replay-buffer` — Destructive — https://policylayer.com/tools/frontmcp/clear-replay-buffer.md
- `clear-session-notifications` — Destructive — https://policylayer.com/tools/frontmcp/clear-session-notifications.md
- `crm-reset` — Destructive — https://policylayer.com/tools/frontmcp/crm-reset.md
- `delete-vault-entry` — Destructive — https://policylayer.com/tools/frontmcp/delete-vault-entry.md
- `notes-reset` — Destructive — https://policylayer.com/tools/frontmcp/notes-reset.md
- `remove_job` — Destructive — https://policylayer.com/tools/frontmcp/remove-job.md
- `remove_workflow` — Destructive — https://policylayer.com/tools/frontmcp/remove-workflow.md
- `reset-stats` — Destructive — https://policylayer.com/tools/frontmcp/reset-stats.md
- `secret` — Destructive — https://policylayer.com/tools/frontmcp/secret.md
- `users-delete` — Destructive — https://policylayer.com/tools/frontmcp/users-delete.md
- `admin_action` — Execute — https://policylayer.com/tools/frontmcp/admin-action.md
- `admin-background-job` — Execute — https://policylayer.com/tools/frontmcp/admin-background-job.md
- `admin-only` — Execute — https://policylayer.com/tools/frontmcp/admin-only.md
- `browser_test` — Execute — https://policylayer.com/tools/frontmcp/browser-test.md
- `build-shell` — Execute — https://policylayer.com/tools/frontmcp/build-shell.md
- `cancellable-wait` — Execute — https://policylayer.com/tools/frontmcp/cancellable-wait.md
- `cold-start-test` — Execute — https://policylayer.com/tools/frontmcp/cold-start-test.md
- `concurrency-mutex` — Execute — https://policylayer.com/tools/frontmcp/concurrency-mutex.md
- `concurrency-queued` — Execute — https://policylayer.com/tools/frontmcp/concurrency-queued.md
- `deploy_application` — Execute — https://policylayer.com/tools/frontmcp/deploy-application.md
- `emit-app-event` — Execute — https://policylayer.com/tools/frontmcp/emit-app-event.md
- `execute_job` — Execute — https://policylayer.com/tools/frontmcp/execute-job.md
- `execute_workflow` — Execute — https://policylayer.com/tools/frontmcp/execute-workflow.md
- `expensive-operation` — Execute — https://policylayer.com/tools/frontmcp/expensive-operation.md
- `experimental-agent` — Execute — https://policylayer.com/tools/frontmcp/experimental-agent.md
- `gated-acme` — Execute — https://policylayer.com/tools/frontmcp/gated-acme.md
- `load-component` — Execute — https://policylayer.com/tools/frontmcp/load-component.md
- `long-running-task` — Execute — https://policylayer.com/tools/frontmcp/long-running-task.md
- `node_runtime_tool` — Execute — https://policylayer.com/tools/frontmcp/node-runtime-tool.md
- …and 175 more: https://policylayer.com/tools/frontmcp.md

## For agents

This record is a snapshot. Live verdicts and the full registry:

- Check every server in your MCP config at once: `npx -y policylayer stack`
- Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md)
- Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events`

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Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=frontmcp · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/frontmcp