Metaharness AI Agent
by ruvnet🛠️ The meta-harness for AI agents — scaffold your own focused, branded agent harness with its own npx CLI, MCP server, memory, learning loop, and witness-signed releases. Works with Claude Code, Codex, pi.dev, Hermes, OpenClaw, and RVM (hardware-isolated sandbox).
Metaharness is an open-source ai agent by ruvnet, written mainly in TypeScript, with 735 GitHub stars and the MIT license. Its code was last updated Nov 1, 2026. The latest npm release is metaharness 0.4.23, published Nov 10, 2026, with 107,013 downloads last week.
Scan summary: scanned Nov 5, 2026 at commit 2f415bf. Seen able to run shell commands, read environment and secrets, connect to the internet. Scan policy
What Metaharness can touch
- Seen in this scan, either in the code or while it ran.Run shell commandsFound in the code by our scan
- Our checks did not find this. The tool may still do it.Run dynamic codeNot seen in this scan
- Our checks did not find this. The tool may still do it.Read or write filesNot seen in this scan
- Seen in this scan, either in the code or while it ran.Read environment and secretsFound in the code by our scan
- Our checks did not find this. The tool may still do it.Control a web browserNot seen in this scan
- Our checks did not find this. The tool may still do it.Connect to databasesNot seen in this scan
- Our checks did not find this. The tool may still do it.Read or send messagesNot seen in this scan
- Our checks did not find this. The tool may still do it.Touch money or tradingNot seen in this scan
- Seen in this scan, either in the code or while it ran.Connect to the internetFound in the code by our scan
"Not seen" means our checks did not find it, and the tool may still do it. Covers commit 2f415bf, Nov 5, 2026. See the scan policy.
Before you install Metaharness
AgenticMart scanned Metaharness on Nov 5, 2026 with automated checks for hidden code, known-malicious packages, leaked secrets and vulnerable dependencies. The result covers one commit under our scan policy, so review what access you give it and check any advisories shown here.
What it can access
- An AI agent decides its own next steps and calls whatever tools you give it, so its risk depends on the access you grant.
Before you install
- Pin the version you reviewed instead of always installing the latest release.
- Read the tool list or scripts before the first run, and keep approval prompts on for actions that write, send or delete.
- Maintained by ruvnet on GitHub, 735 stars and 93 forks. Popularity is not proof of safety.
- Last code change: Nov 1, 2026.
- Open-source license: MIT.
Metaharness is an open-source ai agent by ruvnet, written mainly in TypeScript. 🛠️ The meta-harness for AI agents — scaffold your own focused, branded agent harness with its own npx CLI, MCP server, memory, learning loop, and witness-signed releases. Works with Claude Code, Codex, pi.dev, Hermes, OpenClaw, and RVM (hardware-isolated sandbox).
At a glance
- Stars
- 735
- Forks
- 93
- Language
- TypeScript
- License
- MIT
- Created
- Jun 2026
- Last update
- Nov 1, 2026
- Type
- AI Agent
- Price
- Free
Topics
Questions about Metaharness
What is Metaharness?
🛠️ The meta-harness for AI agents — scaffold your own focused, branded agent harness with its own npx CLI, MCP server, memory, learning loop, and witness-signed releases. Works with Claude Code, Codex, pi.dev, Hermes, OpenClaw, and RVM (hardware-isolated sandbox).
Who maintains Metaharness?
Metaharness is maintained by ruvnet on GitHub (ruvnet/metaharness). AgenticMart lists it from public repository data.
Is Metaharness safe to use?
AgenticMart scanned Metaharness on Nov 5, 2026 with automated checks for hidden code, known-malicious packages, leaked secrets and vulnerable dependencies. The result covers one commit under our scan policy, so review what access you give it and check any advisories shown here.
What license does Metaharness use?
It is published under the MIT license.
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