lumen: Save 30% token costs when using Claude Code, Codex, OpenCode for free

by ory · MCP Server · ★ 313

Last updated: · Indexed by AgentSkillsHub · Auto-synced every 8h

How to install lumen

/plugin install lumen@ory
git clone https://github.com/ory/lumen.git "$CODEX_HOME/lumen"

Taken from the project's README on GitHub.

Security audit verdict: SAFE · quality 66/100

None of the 42 rules matched — no credential harvesting, no data exfiltration, no curl-pipe-shell installer. Scanned against 42 published rules built on the SlowMist agent-security taxonomy, refreshed every 8 hours.

The quality score combines nine heuristic checks of the repo and its README: completeness, clarity, specificity, examples, structure, agent readiness, step-by-step content, instruction quality and security notes. It rates how well the project explains itself to an agent, not the code.

agentic-codingclaudeclaude-aiclaude-codeclaude-plcodexcontextgeminigolanggpt-5

Quick Facts

Stars313
Forks37
LanguageGo
CategoryMCP Server
Quality Score66/100
Open Issues29
Last Updated2026-10-11
Created2026-02-27
Platformsclaude-code, codex, gemini, go, mcp
Est. Tokens~20k

About lumen

Claude reads entire files to find what it needs. Lumen gives it a map. Lumen is a 100% local semantic code search engine for AI coding agents. No API keys, no cloud, no external database, just open-source embedding models (Ollama or LM Studio), SQLite, and your CPU. A single static binary and your own local embedding server.

Compatible Skills

These tools work well together with lumen for enhanced workflows:

  • ox — semantic(0.19)+complementary+same_lang+similar_pop+shared_platform (52%)
  • pockode — semantic(0.18)+complementary+same_lang+similar_pop+shared_platform (51%)

lumen alternative? Top 6 similar tools

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How this security grade is produced

Grades come from a rule-based scan built on the SlowMist agent-security taxonomy: 42 published rules, covering credential harvesting, data exfiltration, curl | sh installers and more. It is a first-layer scan, not a manual audit — we say so rather than overstate it.

The scale of the problem is documented independently: Liu et al. (2026), in a study of 31,132 agent skills, report that 26.1% contain security vulnerabilities. Our own full-catalog census is published as a citable open dataset.

Sources & who's responsible:

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