{"slug": "show-hn-self-hosted-monitoring-for-ai-recommendations-mit-license", "title": "Show HN: Self-hosted monitoring for AI recommendations (MIT License)", "summary": "Lettertrace, a new open-source tool released under the MIT License, lets companies self-host monitoring of how often AI assistants like Claude, ChatGPT, and Gemini mention their brand. The developer-first tool, which works with Anthropic, OpenAI, and Google keys, provides metrics such as visibility, share of voice, prominence, and sentiment, with a sample run showing Acme mentioned in 15 of 24 prompts (41% share of voice) and a positive sentiment score of +0.34.", "body_md": "Lettertrace measures how often Claude, ChatGPT, and Gemini mention your company. But there's a catch: it's free end-to-end, developer-first, and open source.\n\nworks with ChatGPT, Claude & Gemini · self-host in minutes\n\n$ lettertrace run --project acme\n\n› querying claude-opus-4-8 across 24 prompts…\n\n✓ acme mentioned in 15 / 24 answers\n\nshare of voice ████████░░░░░░░░ 41%\n\nsentiment +0.34 positive\n\ntop competitor notion · 28%\n\n$\n\nhow it works\n\nAdd the subjects your buyers ask about, “best CRM for startups”, “email tools for agencies”.\n\nLettertrace writes the real questions people put to AI assistants, so you monitor how they’re actually answered.\n\nEvery run is a datapoint. Watch visibility, prominence, and sentiment move week over week.\n\nIngest rival brands and see your share of voice, who the models recommend, and how often.\n\nthe numbers that matter\n\nLettertrace turns raw AI answers into the metrics AEO/GEO teams track: visibility, share of voice, prominence, and sentiment, per topic, per model, over time.\n\n62%\n\n41%\n\n+0.34\n\n5\n\nsample answer · claude\n\n“For fast-growing startups, a few tools stand out. Acme is a strong pick for teams that want automation without losing their brand voice, while Notion and Linear are popular for docs and issue tracking…”\n\nfeatures\n\nUse your own Anthropic, OpenAI & Google keys. They’re encrypted at rest and never leave your infrastructure.\n\nMonitor Claude, ChatGPT, Gemini, and Google AI Overviews side by side. Add more answer engines as they matter.\n\nTurn one topic into dozens of natural prompts automatically, no manual prompt-writing.\n\nKnow not just if you appear, but whether the answer speaks well of you, and recommends you.\n\nSee exactly how often you win the answer versus each competitor you track.\n\nRun daily or weekly on autopilot and build a trend line you can act on.\n\nopen source\n\n$ git clone lettertrace && cd lettertrace\n\n$ npm install\n\n$ cp .env.example .env.local\n\n# add Supabase URL + keys\n\n$ npm run dev\n\n→ http://localhost:3000\n\nSet up your brand, add a key, and run your first monitor in minutes.", "url": "https://wpnews.pro/news/show-hn-self-hosted-monitoring-for-ai-recommendations-mit-license", "canonical_source": "https://lettertrace.com", "published_at": "2026-08-15 17:35:13+00:00", "updated_at": "2026-08-15 18:11:21.046164+00:00", "lang": "en", "topics": ["ai-tools", "developer-tools", "artificial-intelligence"], "entities": ["Lettertrace", "Claude", "ChatGPT", "Gemini", "Anthropic", "OpenAI", "Google", "Acme"], "alternates": {"html": "https://wpnews.pro/news/show-hn-self-hosted-monitoring-for-ai-recommendations-mit-license", "markdown": "https://wpnews.pro/news/show-hn-self-hosted-monitoring-for-ai-recommendations-mit-license.md", "text": "https://wpnews.pro/news/show-hn-self-hosted-monitoring-for-ai-recommendations-mit-license.txt", "jsonld": "https://wpnews.pro/news/show-hn-self-hosted-monitoring-for-ai-recommendations-mit-license.jsonld"}}