Show HN: CodeTrain – an AI tutor that refuses to write code for you
Show HN introduced CodeTrain, an AI‑powered coding tutor that runs locally and does not generate code for the user. The tool guides developers through their own codebase by prompting them to type each line manually, aiming to improve understanding. It is offered with a free tier on GitHub and a paid Pro plan starting at $24 per month.
- ▪CodeTrain operates on the user's machine, ensuring that the code never leaves the local environment.
- ▪The AI assistant provides step‑by‑step guidance but requires the developer to write the code themselves, avoiding autocomplete shortcuts.
- ▪The service is available as a free version on GitHub and a Pro subscription that costs $24 per month.
- ▪The product was announced on the Show HN platform, targeting engineers who want to retain hands‑on coding skills.
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Story provenance
Attribution is not the same as permission. This drawer separates discovery metadata, excerpts, WeSearch-generated summaries, reuse status, and whether the publisher receives the visit. Nothing here claims a legal grant the publisher has not made.
Record
| Original publisher | Codetrain |
| Canonical URL | https://codetrain.ai |
| Publication time | Mon, 20 Jul 2026 14:01:43 +0000 |
| Retrieval time | 2026-07-20T15:26:58.983Z |
| Last seen | 2026-07-20T15:26:58.983Z |
| Headline source | Publisher (no WeSearch rewrite) |
| Excerpt source | publisher body |
| Excerpt method | First ~120 words (~800 chars) of extracted publisher body, fair-use limited. |
| Summary | WeSearch · cerebras-chat (WeSearch summarizer) |
| Summary source text | contentText |
| Citation coverage | Summary is a WeSearch-generated derivative; primary citation is the original publisher URL. |
| Cluster | _-RUu5wniDBS |
| Cluster logic | Grouped by semantic title/content similarity across sources within a rolling window. Same-publisher template collisions are excluded from coverage comparison. |
| Ranking reason | Story pages are not engagement-ranked. Hub feeds use recency, with optional source-diversified chronological ordering (cap consecutive stories per source). No personalized ranking. |
| Publisher visit | Yes — open original |
| Substitutes article? | No — link-out required for full text |
Rights status (four layers)
WeSearch handling by dimension
| Indexing | May the item be indexed (stored, ranked, made findable)? | Allowed |
| Snippet | May a short excerpt of the publisher's text be shown? | Allowed |
| AI summary | May WeSearch generate its own short summary of the article? | Limited |
| Retrieval / RAG | May the content be exposed for third-party retrieval-augmented generation? | Not asserted |
| Model training | May the content be used to train AI models? | Not asserted |
| Commercial reuse | May the content be reused commercially? | Not permitted |
Basis: Derived from the published RSS/Atom feed. Contact: [email protected]. Reviewed: 2026-07-24.
Opening excerpt (first ~120 words) tap to expand
Hands-on coding trainer · runs on your machine AI writes the code.Make sure your engineersstill understand it. CodeTrain teaches your developers on their own codebase, one small step at a time. They type every line themselves, so you can see what actually stuck, without autocomplete doing the thinking for them. Start free, no card Talk to sales Your code never leaves your machine. Free skill on GitHub · Pro from $24/mo.
Excerpt limited to ~120 words for fair-use compliance. The full article is at Codetrain.
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