Borrowing it
Nothing to install: this file belongs to layer1labs/specsmith. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/layer1labs/specsmith/main/.agents/skills/execution/SKILL.mdgit clone --depth 1 https://github.com/layer1labs/specsmithWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/layer1labs/specsmith/execution)<a href="https://agentmods.dev/skills/layer1labs/specsmith/execution"><img src="https://agentmods.dev/badge/skills/layer1labs/specsmith/execution/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/layer1labs/specsmith/execution"><img src="https://agentmods.dev/badge/skills/layer1labs/specsmith/execution.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00015 | $0.00704 |
| Opus 5.5 | $0.00006 | $0.00282 |
| Sonnet 5.5 | $0.00003 | $0.00141 |
| Haiku 4.5 | $0.00002 | $0.00070 |
Grade A, and why
execution scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2mo ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 117 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Local Execution Management
This skill enables specsmith projects to manage local command execution and environment management while maintaining governance compliance across Windows, Linux, and Mac platforms.
Requirements Covered
- REQ-089: Local Command Execution Policy
- REQ-090: Local Command Whitelist Management
- REQ-091: Local Command Blacklist Management
- REQ-092: Local Command Override Capability
- REQ-093: Pip Execution Override
- REQ-094: Pip Execution Safety Checks
- REQ-095: Virtual Environment Creation
- REQ-096: Virtual Environment Management
- REQ-097: Virtual Environment Validation
- REQ-098: Virtual Environment Warning System
- REQ-099: Local Environment Isolation
- REQ-100: Execution Policy Configuration
Integration Capabilities
Platform Features
- Cross-platform command execution with platform-specific considerations
- Local environment isolation and management
- Virtual environment creation and management
- Pip execution safety with workspace-local enforcement
- Whitelist and blacklist management for commands
- Override capability with human approval
Governance Requirements
- Human approval required for all local command execution
- Configuration management with governance controls
- Security best practices enforcement for execution
- Resource monitoring and logging for execution activities
Platform-Specific Considerations
Windows
- Path handling with Windows-specific conventions
- PowerShell and CMD integration
- Windows-specific environment variables
- File system permissions and access controls
- Registry and system integration considerations
Linux
- POSIX-compliant path handling
- Shell integration (bash, zsh, fish)
- Package manager integration (apt, yum, pacman)
- System service management
- File permissions and ownership
macOS
- Darwin-specific path handling
- macOS application integration
- Homebrew and MacPorts package management
- System preferences and security frameworks
- AppleScript and automation support
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 2mo ago First seen · 117 lines · 15 tokens per session scan A 53833c4a2359
execution is a skill published in the GitHub repository layer1labs/specsmith (8 stars, last pushed 1mo ago), licensed MIT. It adds 15 tokens to every session and 704 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
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