# Send Error Guard — Control‑Plane Safety to your agent
Hand the extracted package to your coding agent with a concrete install brief instead of figuring it out manually.
## Fast path
- Download the package from Yavira.
- Extract it into a folder your agent can access.
- Paste one of the prompts below and point your agent at the extracted folder.
## Suggested prompts
### New install

```text
I downloaded a skill package from Yavira. Read SKILL.md from the extracted folder and install it by following the included instructions. Tell me what you changed and call out any manual steps you could not complete.
```
### Upgrade existing

```text
I downloaded an updated skill package from Yavira. Read SKILL.md from the extracted folder, compare it with my current installation, and upgrade it while preserving any custom configuration unless the package docs explicitly say otherwise. Summarize what changed and any follow-up checks I should run.
```
## Machine-readable fields
```json
{
  "schemaVersion": "1.0",
  "item": {
    "slug": "error-guard",
    "name": "Error Guard — Control‑Plane Safety",
    "source": "tencent",
    "type": "skill",
    "category": "通讯协作",
    "sourceUrl": "https://clawhub.ai/Amar1432/error-guard",
    "canonicalUrl": "https://clawhub.ai/Amar1432/error-guard",
    "targetPlatform": "OpenClaw"
  },
  "install": {
    "downloadUrl": "/downloads/error-guard",
    "sourceDownloadUrl": "https://wry-manatee-359.convex.site/api/v1/download?slug=error-guard",
    "sourcePlatform": "tencent",
    "targetPlatform": "OpenClaw",
    "packageFormat": "ZIP package",
    "primaryDoc": "SKILL.md",
    "includedAssets": [
      "benchmark-worker.ts",
      "state.ts",
      "worker-events.ts",
      "heartbeat.ts",
      "spawn.ts",
      "control.ts"
    ],
    "downloadMode": "redirect",
    "sourceHealth": {
      "source": "tencent",
      "slug": "error-guard",
      "status": "healthy",
      "reason": "direct_download_ok",
      "recommendedAction": "download",
      "checkedAt": "2026-04-30T00:28:48.293Z",
      "expiresAt": "2026-05-07T00:28:48.293Z",
      "httpStatus": 200,
      "finalUrl": "https://wry-manatee-359.convex.site/api/v1/download?slug=error-guard",
      "contentType": "application/zip",
      "probeMethod": "head",
      "details": {
        "probeUrl": "https://wry-manatee-359.convex.site/api/v1/download?slug=error-guard",
        "contentDisposition": "attachment; filename=\"error-guard-1.0.0.zip\"",
        "redirectLocation": null,
        "bodySnippet": null,
        "slug": "error-guard"
      },
      "scope": "item",
      "summary": "Item download looks usable.",
      "detail": "Yavira can redirect you to the upstream package for this item.",
      "primaryActionLabel": "Download for OpenClaw",
      "primaryActionHref": "/downloads/error-guard"
    },
    "validation": {
      "installChecklist": [
        "Use the Yavira download entry.",
        "Review SKILL.md after the package is downloaded.",
        "Confirm the extracted package contains the expected setup assets."
      ],
      "postInstallChecks": [
        "Confirm the extracted package includes the expected docs or setup files.",
        "Validate the skill or prompts are available in your target agent workspace.",
        "Capture any manual follow-up steps the agent could not complete."
      ]
    }
  },
  "links": {
    "detailUrl": "https://openagent3.xyz/skills/error-guard",
    "downloadUrl": "https://openagent3.xyz/downloads/error-guard",
    "agentUrl": "https://openagent3.xyz/skills/error-guard/agent",
    "manifestUrl": "https://openagent3.xyz/skills/error-guard/agent.json",
    "briefUrl": "https://openagent3.xyz/skills/error-guard/agent.md"
  }
}
```
## Documentation

### error-guard

⚠️ System‑level skill (Advanced users)

This skill defines the control‑plane safety primitives for OpenClaw.
It is intentionally minimal, non‑blocking, and designed to prevent agent freezes, deadlocks, and unrecoverable states when running long‑lived or high‑risk workloads.

### Design Principles

Warning: This skill operates at the agent control‑plane level.
It should be installed only by users who understand OpenClaw’s execution model and are running workloads that can block, hang, or run for extended periods.

Main agent never blocks: no long exec, no external I/O, no LLM calls.
Event-driven: workers emit events; the control plane listens.
Fail-safe first: recovery commands must always respond.
Minimal state: track only task metadata (never payloads).

### /status

Report current system health and task registry state.

Returns:

Active tasks (taskId, type, state)
Start time and last heartbeat
Flags for stalled or overdue tasks

Constraints:

Must run in constant time
Must not call any model or external API

### /flush

Emergency stop.

Immediately:

Cancel all active tasks
Kill active exec/process sessions
Clear pending message queue
Reset in-memory task registry

Constraints:

Must always respond
No waiting on workers
No model calls

### /recover

Safe recovery sequence.

Steps:

Execute /flush
Reset control-plane state
Optionally reload skills/state (no container restart)

### Future Extensions (Not Implemented Yet)

Sub-agent runner helper (event-driven)
Task watchdogs with TTL and silence detection
Structured event protocol (task.started, task.heartbeat, task.completed, ...)
Back-pressure and task classes (interactive / batch / background)

### Security & Privacy

This skill does not store payloads, prompts, messages, or model outputs
Only minimal task metadata is persisted (taskId, timestamps, state)
No API keys, credentials, or user data are read or written
Safe to publish and share publicly

### Non-Goals

No business logic
No background polling loops
No user-facing features
No LLM reasoning paths

This skill is the last line of defense. Keep it small, fast, and reliable.
## Trust
- Source: tencent
- Verification: Indexed source record
- Publisher: Amar1432
- Version: 1.0.0
## Source health
- Status: healthy
- Item download looks usable.
- Yavira can redirect you to the upstream package for this item.
- Health scope: item
- Reason: direct_download_ok
- Checked at: 2026-04-30T00:28:48.293Z
- Expires at: 2026-05-07T00:28:48.293Z
- Recommended action: Download for OpenClaw
## Links
- [Detail page](https://openagent3.xyz/skills/error-guard)
- [Send to Agent page](https://openagent3.xyz/skills/error-guard/agent)
- [JSON manifest](https://openagent3.xyz/skills/error-guard/agent.json)
- [Markdown brief](https://openagent3.xyz/skills/error-guard/agent.md)
- [Download page](https://openagent3.xyz/downloads/error-guard)