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OpenExec — Deterministic Execution Boundary for Agent Systems

Source-distributed deterministic execution service with pinned dependencies. Runs only with a signed approval artifact (ClawShield mode) and emits verifiable...

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Source-distributed deterministic execution service with pinned dependencies. Runs only with a signed approval artifact (ClawShield mode) and emits verifiable...

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Install for OpenClaw

Quick setup
  1. Download the package from Yavira.
  2. Extract the archive and review SKILL.md first.
  3. Import or place the package into your OpenClaw setup.

Requirements

Target platform
OpenClaw
Install method
Manual import
Extraction
Extract archive
Prerequisites
OpenClaw
Primary doc
SKILL.md

Package facts

Download mode
Yavira redirect
Package format
ZIP package
Source platform
Tencent SkillHub
What's included
README.md, SECURITY.md, SKILL.md, config/openexec.example.json, main.py, openexec/__init__.py

Validation

  • Use the Yavira download entry.
  • Review SKILL.md after the package is downloaded.
  • Confirm the extracted package contains the expected setup assets.

Install with your agent

Agent handoff

Hand the extracted package to your coding agent with a concrete install brief instead of figuring it out manually.

  1. Download the package from Yavira.
  2. Extract it into a folder your agent can access.
  3. Paste one of the prompts below and point your agent at the extracted folder.
New install

I downloaded a skill package from Yavira. Read SKILL.md from the extracted folder and install it by following the included instructions. Then review README.md for any prerequisites, environment setup, or post-install checks. Tell me what you changed and call out any manual steps you could not complete.

Upgrade existing

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. Then review README.md for any prerequisites, environment setup, or post-install checks. Summarize what changed and any follow-up checks I should run.

Trust & source

Release facts

Source
Tencent SkillHub
Verification
Indexed source record
Version
0.1.10

Documentation

ClawHub primary doc Primary doc: SKILL.md 15 sections Open source page

OpenExec — Governed Deterministic Execution (Skill)

OpenExec is a runnable governed execution service. It executes only what has already been approved. It is not an agent. It is not a policy engine. It does not self-authorize. OpenExec performs no outbound HTTP, RPC, or governance calls during signature verification or execution. All verification is fully offline. By default, OpenExec uses a local SQLite database (sqlite:///openexec.db). Database network I/O occurs only if explicitly configured by the operator via OPENEXEC_DB_URL.

Install

pip install -r requirements.txt

Run (local)

python -m uvicorn main:app --host 0.0.0.0 --port 5000

Endpoints

GET / → service info (deployment health check) GET /health → health status, mode, restriction level GET /ready → readiness check GET /version → version metadata POST /execute → execute an approved action deterministically POST /receipts/verify → verify receipt hash integrity

1) Demo mode (default, free)

No external governance required. No env vars required. export OPENEXEC_MODE=demo Demo mode still enforces: deterministic execution replay protection (nonce uniqueness) receipt generation

2) ClawShield mode (production / business)

Requires a signed approval artifact issued by ClawShield. OpenExec verifies the Ed25519 signature offline using the configured public key. export OPENEXEC_MODE=clawshield export CLAWSHIELD_PUBLIC_KEY="-----BEGIN PUBLIC KEY----- ... -----END PUBLIC KEY-----" export CLAWSHIELD_TENANT_ID="tenant-id" If signature validation fails, execution is denied. Note: ClawShield governance SaaS is available at https://clawshield.forgerun.ai/. OpenExec does not contact this URL at runtime. It is provided for reference only.

Environment Variables

All environment variables are optional. OpenExec runs with zero configuration in demo mode. VariableDefaultDescriptionOPENEXEC_MODEdemoExecution mode: demo or clawshieldCLAWSHIELD_PUBLIC_KEY(none)PEM-encoded Ed25519 public key for signature verificationCLAWSHIELD_TENANT_ID(none)Tenant identifier for multi-tenant isolationOPENEXEC_ALLOWED_ACTIONS(none)Comma-separated list of permitted actions. If unset, all registered actions are allowedOPENEXEC_DB_URLsqlite:///openexec.dbDatabase URL for execution record persistence

90-Second Quickstart (Demo)

Start server: python -m uvicorn main:app --host 0.0.0.0 --port 5000 Confirm health: curl http://localhost:5000/health Execute a deterministic demo action: curl -X POST http://localhost:5000/execute \ -H "Content-Type: application/json" \ -d '{ "action":"echo", "payload":{"msg":"hello"}, "nonce":"unique-1" }' Replay attempt (returns same result, no re-execution): curl -X POST http://localhost:5000/execute \ -H "Content-Type: application/json" \ -d '{ "action":"echo", "payload":{"msg":"hello"}, "nonce":"unique-1" }'

Receipts

Every execution produces a receipt hash. Receipts are evidence, not logs. Verify a receipt: curl -X POST http://localhost:5000/receipts/verify \ -H "Content-Type: application/json" \ -d '{"exec_id":"<id>","result":"<result_json>","receipt":"<hash>"}'

What this skill does

Accepts structured execution requests Enforces replay protection Executes deterministically (approved parameters only) Emits verifiable receipts for every attempt In ClawShield mode: verifies signed approvals before execution Supports optional execution allow-list via environment variable

What this skill does not do

Define policy Grant permissions Reason autonomously Override governance decisions Self-authorize execution Make outbound HTTP or governance calls during execution Provide OS-level sandboxing or container isolation

Security Boundary Notice

OpenExec enforces execution boundaries at the application layer. It does not provide OS-level sandboxing. Deploy behind containerization, VM isolation, or hardened environments when actions interact with production systems. OpenExec enforces authority separation. It is not a sandbox.

Architecture context (3-layer separation)

OpenExec -- deterministic execution adapter (this skill) ClawShield -- governance + approval minting (SaaS): https://clawshield.forgerun.ai/ ClawLedger -- witness ledger (optional integration) Each layer is replaceable. No single layer can act alone.

Security Documentation

A full security model, threat assumptions, and production hardening checklist are available in SECURITY.md. This skill intentionally separates: Execution enforcement (OpenExec) Infrastructure isolation (operator responsibility)

Execution Safety Guarantees

This skill: Does not dynamically load code Does not evaluate user input as code Uses a static handler registry Does not install packages at runtime Does not fetch remote execution logic

Category context

Agent frameworks, memory systems, reasoning layers, and model-native orchestration.

Source: Tencent SkillHub

Largest current source with strong distribution and engagement signals.

Package contents

Included in package
3 Docs2 Scripts1 Config
  • SKILL.md Primary doc
  • README.md Docs
  • SECURITY.md Docs
  • main.py Scripts
  • openexec/__init__.py Scripts
  • config/openexec.example.json Config