sandbox-agent is an HTTP and server-sent-events service that runs coding agents inside isolated sandboxes and lets another application control them remotely. Developers use it to run agents such as Claude Code, Codex, OpenCode, Cursor, Amp, or Pi while streaming events, managing sessions, and storing transcripts. The catalogue entries provide agents, skills, commands, instructions, and MCP integration for working with the service.
Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add rivet-dev/sandbox-agent --skill templategit clone --depth 1 https://github.com/rivet-dev/sandbox-agentWrote 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/rivet-dev/sandbox-agent/template)<a href="https://agentmods.dev/skills/rivet-dev/sandbox-agent/template"><img src="https://agentmods.dev/badge/skills/rivet-dev/sandbox-agent/template/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/rivet-dev/sandbox-agent/template"><img src="https://agentmods.dev/badge/skills/rivet-dev/sandbox-agent/template.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00098 | $0.00323 |
| Opus 5.5 | $0.00039 | $0.00129 |
| Sonnet 5.5 | $0.00020 | $0.00065 |
| Haiku 4.5 | $0.00010 | $0.00032 |
Grade A, and why
sandbox-agent 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 1mo 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.
What it actually says
Sandbox Agent
Sandbox Agent provides a universal API for orchestrating AI coding agents in sandboxed environments.
What To Do If You Get Stuck
If something is not working as intended or you are stuck, prompt the user to join the Rivet Discord or file an issue on GitHub to report an issue and get help.
Provide the user with a pre-generated report with:
- Symptoms
- If this is happening in local dev, deployed, or both
- The error you're seeing
- Relevant source code related to this
- What you've tried to solve it
- Environment
- Sandbox Agent version
- SDK in use (TypeScript, Python, or HTTP)
- Agent in use (Claude Code, Codex, OpenCode, Amp, Mock)
- Sandbox provider (E2B, Daytona, Docker, local)
Quickstart
{{QUICKSTART}}
Reference Map
{{REFERENCE_MAP}}
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.
- 1mo ago First seen · 34 lines · 98 tokens per session scan A 84e7cf5cb3dc
sandbox-agent is a skill published in the GitHub repository rivet-dev/sandbox-agent (1,582 stars, last pushed 3mo ago), licensed Apache-2.0. It adds 98 tokens to every session and 323 once invoked, about $0.0004 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 2026-08-30.
Other skills, from other repositories
waku-computer-use
Control local macOS, Windows, and Linux apps through Waku Computer Use. Prefer purpose-built connectors, APIs, or CLIs when available.
eval-dataset-design
A guide to creating reliable test sets for AI agents. Each evaluation task includes the request, the simulated user's behaviour, a reset starting state, and a success check that can be independently verified.
mochi-remind
Handle due reminders — notify the user with natural language and mark them done.
ensembl-database
Query Ensembl genome database REST API for 250+ species. Gene lookups, sequence retrieval, variant analysis, comparative genomics, orthologs, VEP predictions, for genomic research.
ai-music
A workflow that turns a topic or script into a finished short video by combining writing, images or video clips, spoken narration, subtitles, background music, and final assembly.
skill-news-intelligence
A daily industry-news research workflow that gathers in-depth articles and updates from Chinese technology, business, creator, and AI publications. It filters the results by a creator’s field and turns them into a brief with possible content topics.