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MCP server · Developer Tools

io.github.stringsofthemind-oss/once

by · github.com/stringsofthemind-oss/once

Execution-safety MCP for AI coding agents protecting consequential writes from unsafe retries.

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Scored a month ago · breakdown

About io.github.stringsofthemind-oss/once

io.github.stringsofthemind-oss/once is an MCP server published by stringsofthemind-oss in the Developer Tools category: execution-safety MCP for AI coding agents protecting consequential writes from unsafe retries.

Recent commit activity is the strongest signal that reported issues will get attention.

Install

Claude Code
claude mcp add io-github-stringsofthemind-oss-once -- npx -y @once-agent/mcp
npx
npx -y @once-agent/mcp

This server has no ConduID identity, so agent calls to it are not receipted. Pin the version you install and review the source before granting it credentials.

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Security checks

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Releases

v0.1.12Once SDK 0.1.12 · 25 Sep 2026Once SDK 0.1.12 Once 0.1.12 ships the completed Phase 11 tool-discovery and selective Gateway work. Highlights Automatic Connect tool classification and whole-toolset protection wiring. `once doctor . --tools` Tool Graph discovery and…
v0.1.11Once SDK 0.1.11 · 25 Sep 2026Adds a registered agent-tool connection for the local Once protection boundary. Agents call the connected tool normally; retries reuse confirmed outcomes, changed payloads conflict, and uncertain outcomes require provider truth. Requires…
v0.1.10Once SDK 0.1.10 · 25 Sep 2026Protect now explains the safe next steps for adapter-required operations: a controlled local proof versus a real provider integration. Automatic rewriting remains unavailable for those callsites.
v0.1.9Once SDK 0.1.9 · 25 Sep 2026Once Doctor now prints runnable, package-qualified follow-up commands when used in a fresh project. This patch improves the CLI adoption flow; it does not change the execution-safety model.
v0.1.8Once SDK 0.1.8 · 25 Sep 2026Once SDK 0.1.8 makes `once doctor` the adoption front door. What's new `once doctor [directory]` now runs as a local, read-only first step. No `ONCE_API_KEY` is required for the default Doctor scan. Source code is not uploaded and…
Questions

About io.github.stringsofthemind-oss/once

How do I install io.github.stringsofthemind-oss/once?

Run claude mcp add io-github-stringsofthemind-oss-once -- npx -y @once-agent/mcp, then add the server to your MCP client's configuration.

Is io.github.stringsofthemind-oss/once safe to use with an AI agent?

Its trust score is 37 out of 100 (low). Conduid hasn't run static security checks on this repository yet, so review the source yourself before granting it credentials. It has no ConduID identity yet, so agent calls to it are not receipted.

Is io.github.stringsofthemind-oss/once still maintained?

Yes — the latest release is v0.1.12 (25 Sep 2026), and the last commit was 7 days ago. The repository has 0 stars.