# read_thread

Reconstruct a bounded conversation from message headers without modifying the mailbox.

Agent View of the PolicyLayer registry record for `read_thread`. HTML page: https://policylayer.com/tools/mcp-control-plane/read-thread

## Facts

- Tool: `read_thread`
- Server: Mcp Control Plane (`albertik322-sudo/mcp-control-plane`) — https://policylayer.com/tools/mcp-control-plane.md
- Homepage: https://github.com/albertik322-sudo/mcp-control-plane
- Risk category: Read (Low risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Allowed

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

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "read_thread",
    "arguments": {}
  }
}
```

## Why read_thread is rated Low

This tool retrieves and queries email message headers to reconstruct conversation threads. The explicit statement that it operates 'without modifying the mailbox' confirms no write, delete, or execute operations occur. It is purely informational retrieval with no side effects, making it a Read category tool with low severity since it only accesses existing message metadata without altering state.

From the tool's own definition: "Tool reconstructs a conversation 'without modifying the mailbox' and reads message headers to reconstruct bounded conversation thread."

## Use case

AI agents call read_thread to retrieve information from Mcp Control Plane without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

## Recommended policy (PolicyLayer)

Verdict: **Allowed**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Mcp Control Plane:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "read_thread": {}
  }
}
```

## Other tools on Mcp Control Plane (285)

- `request_durable_task_cancel` — Destructive — https://policylayer.com/tools/mcp-control-plane/request-durable-task-cancel.md
- `steam_rom_manager_cli` — Destructive — https://policylayer.com/tools/mcp-control-plane/steam-rom-manager-cli.md
- `steam_rom_manager_nuke` — Destructive — https://policylayer.com/tools/mcp-control-plane/steam-rom-manager-nuke.md
- `steam_rom_manager_remove` — Destructive — https://policylayer.com/tools/mcp-control-plane/steam-rom-manager-remove.md
- `activate_window` — Execute — https://policylayer.com/tools/mcp-control-plane/activate-window.md
- `admin_run` — Execute — https://policylayer.com/tools/mcp-control-plane/admin-run.md
- `api_sentence` — Execute — https://policylayer.com/tools/mcp-control-plane/api-sentence.md
- `apply_unified_patch_remote` — Execute — https://policylayer.com/tools/mcp-control-plane/apply-unified-patch-remote.md
- `apt_maintenance` — Execute — https://policylayer.com/tools/mcp-control-plane/apt-maintenance.md
- `call_service` — Execute — https://policylayer.com/tools/mcp-control-plane/call-service.md
- `click` — Execute — https://policylayer.com/tools/mcp-control-plane/click.md
- `click_at` — Execute — https://policylayer.com/tools/mcp-control-plane/click-at.md
- `click_in_window` — Execute — https://policylayer.com/tools/mcp-control-plane/click-in-window.md
- `comfy_generate_from_asset` — Execute — https://policylayer.com/tools/mcp-control-plane/comfy-generate-from-asset.md
- `comfy_interrupt` — Execute — https://policylayer.com/tools/mcp-control-plane/comfy-interrupt.md
- `comfy_restart` — Execute — https://policylayer.com/tools/mcp-control-plane/comfy-restart.md
- `deck_exec` — Execute — https://policylayer.com/tools/mcp-control-plane/deck-exec.md
- `deck_probe` — Execute — https://policylayer.com/tools/mcp-control-plane/deck-probe.md
- `dns_test` — Execute — https://policylayer.com/tools/mcp-control-plane/dns-test.md
- `docker_compose` — Execute — https://policylayer.com/tools/mcp-control-plane/docker-compose.md
- `docker_container_action` — Execute — https://policylayer.com/tools/mcp-control-plane/docker-container-action.md
- `docker_exec` — Execute — https://policylayer.com/tools/mcp-control-plane/docker-exec.md
- `double_click` — Execute — https://policylayer.com/tools/mcp-control-plane/double-click.md
- `drag_to` — Execute — https://policylayer.com/tools/mcp-control-plane/drag-to.md
- `focus_window_win32` — Execute — https://policylayer.com/tools/mcp-control-plane/focus-window-win32.md
- `hold_key` — Execute — https://policylayer.com/tools/mcp-control-plane/hold-key.md
- `hotkey` — Execute — https://policylayer.com/tools/mcp-control-plane/hotkey.md
- `install_flatpak_emulators` — Execute — https://policylayer.com/tools/mcp-control-plane/install-flatpak-emulators.md
- `key_down` — Execute — https://policylayer.com/tools/mcp-control-plane/key-down.md
- `key_up` — Execute — https://policylayer.com/tools/mcp-control-plane/key-up.md
- …and 255 more: https://policylayer.com/tools/mcp-control-plane.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`

---

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