🛠️ All DevTools

[API/SDK] Bose has released API docs and opened the API for its EoL SoundTouch speakers

[Other] Show HN: DeepDream for Video with Temporal Consistency I forked a PyTorch DeepDream implementation and added video support with temporal consistency. It produces smooth DeepDream videos with minimal flickering, and is highly flexible including many parameters and supports multiple pretrained image classifiers including GoogLeNet. Check out the repo for sample videos! Features:<p>- Optical flow warps previous hallucinations into the current frame<p>- Occlusion masking prevents ghosting and hallucination transfer when objects move<p>- Advanced parameters (layers, octaves, iterations) still work<p>- Works on GPU, CPU, and Apple Silicon

[Other] ASCII-Driven Development

[Other] Instant File Mock API. Custom Headers. Zero Signup Free mock file server for developers. Upload any file, configure HTTP status codes (200, 404, 500), response latency up to 5s, and custom Content-Type headers. No signup required.

[Other] Claude Code CLI broken

[Other] Show HN: I visualized the entire history of Citi Bike in the browser Each moving arrow represents one real bike ride out of 291 million, and if you&#x27;ve ever taken a Citi Bike before, you are included in this massive visualization!<p>You can search for your ride using Cmd + K and your Citi Bike receipt, which should give you the time of your ride and start&#x2F;end station.<p>Everything is open source: <a href="https:&#x2F;&#x2F;github.com&#x2F;freemanjiang&#x2F;bikemap" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;freemanjiang&#x2F;bikemap</a><p>Some technical details: - No backend! Processed data is stored in parquet files on a Cloudflare CDN, and queried directly by DuckDB WASM<p>- deck.gl w&#x2F; Mapbox for GPU-accelerated rendering of thousands of concurrent animated bikes<p>- Web Workers decode polyline routes and do as much precomputation as possible off the main thread<p>- Since only (start, end) station pairs are provided, routes are generated by querying OSRM for the shortest path between all 2,400+ station pairs

[Other] Show HN: Seapie – a Python debugger where breakpoints drop into a REPL

[Other] Show HN: Tylax – A bidirectional LaTeX to Typst converter in Rust Hi HN, author here.<p>I built Tylax because I wanted to migrate my old LaTeX papers to Typst but found existing regex-based scripts too fragile for nested environments.<p>Tylax parses LaTeX into an AST (using mitex-parser) and converts it to Typst code. It supports: - Full document structure (not just math snippets) - Complex math (matrices, integrals) - Experimental TikZ -&gt; CeTZ graphics conversion - Runs in browser via WASM<p>Repo: <a href="https:&#x2F;&#x2F;github.com&#x2F;scipenai&#x2F;tylax" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;scipenai&#x2F;tylax</a> Web Demo: <a href="https:&#x2F;&#x2F;convert.silkyai.cn&#x2F;" rel="nofollow">https:&#x2F;&#x2F;convert.silkyai.cn&#x2F;</a><p>Happy to answer any questions!

[Other] Show HN: 30k IKEA items in flat text OP here.<p>I took the unofficial IKEA US dataset (originally scraped by jeffreyszhou) and converted all 30,511 products into a flat, markdown-like protocol called CommerceTXT.<p>The goal: See if a flatter structure is more efficient for LLM context windows.<p>The results: - Size: 30k products across 632 categories. - Efficiency: The text version uses ~24% fewer tokens (3.6M saved total) compared to the equivalent minified JSON. - Structure: Files are organized in folders (e.g. &#x2F;products&#x2F;category&#x2F;), which helps with testing hierarchical retrieval routers.<p>The link goes to the dataset on Hugging Face which has the full benchmarks.<p>Parser code is here: <a href="https:&#x2F;&#x2F;github.com&#x2F;commercetxt&#x2F;commercetxt" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;commercetxt&#x2F;commercetxt</a><p>Happy to answer questions about the conversion logic!

[IDE/Editor] Show HN: KeelTest – AI-driven VS Code unit test generator with bug discovery I built this because Cursor, Claude Code and other agentic AI tools kept giving me tests that looked fine but failed when I ran them. Or worse - I&#x27;d ask the agent to run them and it would start looping: fix tests, those fail, then it starts &quot;fixing&quot; my code so tests pass, or just deletes assertions so they &quot;pass&quot;.<p>Out of that frustration I built KeelTest - a VS Code extension that generates pytest tests and executes them, got hooked and decided to push this project forward... When tests fail, it tries to figure out why:<p>- Generation error: Attemps to fix it automatically, then tries again<p>- Bug in your source code: flags it and explains what&#x27;s wrong<p>How it works:<p>- Static analysis to map dependencies, patterns, services to mock.<p>- Generate a plan for each function and what edge cases to cover<p>- Generate those tests<p>- Execute in &quot;sandbox&quot;<p>- Self-heal failures or flag source bugs<p>Python + pytest only for now. Alpha stage - not all codebases work reliably. But testing on personal projects and a few production apps at work, it&#x27;s been consistently decent. Works best on simpler applications, sometimes glitches on monorepos setups. Supports Poetry&#x2F;UV&#x2F;plain pip setups.<p>Install from VS Code marketplace: <a href="https:&#x2F;&#x2F;marketplace.visualstudio.com&#x2F;items?itemName=KeelCode.keeltest" rel="nofollow">https:&#x2F;&#x2F;marketplace.visualstudio.com&#x2F;items?itemName=KeelCode...</a><p>More detailed writeup how it works: <a href="https:&#x2F;&#x2F;keelcode.dev&#x2F;blog&#x2F;introducing-keeltest" rel="nofollow">https:&#x2F;&#x2F;keelcode.dev&#x2F;blog&#x2F;introducing-keeltest</a><p>Free tier is 7 tests files&#x2F;month (current limit is &lt;=300 source LOC). To make it easier to try without signing up, giving away a few API keys (they have shared ~30 test files generation quota):<p>KEY-1: tgai_jHOEgOfpMJ_mrtNgSQ6iKKKXFm1RQ7FJOkI0a7LJiWg<p>KEY-2: tgai_NlSZN-4yRYZ15g5SAbDb0V0DRMfVw-bcEIOuzbycip0<p>KEY-3: tgai_kiiSIikrBZothZYqQ76V6zNbb2Qv-o6qiZjYZjeaczc<p>KEY-4: tgai_JBfSV_4w-87bZHpJYX0zLQ8kJfFrzas4dzj0vu31K5E<p>Would love your honest feedback where this could go next, and on which setups it failed, how it failed, it has quite verbose debug output at this stage!

[Other] Show HN: Free and local browser tool for designing gear models for 3D printing Just build a local tool for designing gears that kinda looks and works nice

[Other] Mock APIs that update instantly — no restart, ever. Native desktop mock server that updates endpoints while running — no restart needed. Key features: → Live endpoint editing on running servers → Visual state machine for multi-step API flows → WebSocket, SSE support (mock ChatGPT-style streaming) → API recording — capture real responses, auto-create mocks → Chaos engineering — inject latency, random failures → 100% localhost, no cloud, privacy-first -> Performance: 166,000 req/sec Built with Tauri (Rust). Fast, lightweight, free.

[CLI Tool] Show HN: Shellock, a real-time CLI flag explainer for fish shell

[Database] PgX – Debug Postgres performance in the context of your application code

[Other] Show HN: SMTP Tunnel – A SOCKS5 proxy disguised as email traffic to bypass DPI A fast SOCKS5 proxy that tunnels your traffic through what looks like normal SMTP email, bypassing Deep Packet Inspection firewalls.<p>How it works: - Client runs a local SOCKS5 proxy (127.0.0.1:1080) - Traffic is sent to server disguised as SMTP (EHLO, STARTTLS, AUTH) - DPI sees legitimate email session, not a VPN&#x2F;proxy<p>Features: - One-liner install on any Linux VPS - Multi-user with per-user secrets and IP whitelists - Auto-generated client packages (just double-click to run) - Auto-reconnect on connection loss - Works with any app that supports SOCKS5<p>Tech: Python&#x2F;asyncio, TLS 1.2+, HMAC-SHA256 auth<p>GitHub: <a href="https:&#x2F;&#x2F;github.com&#x2F;x011&#x2F;smtp-tunnel-proxy" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;x011&#x2F;smtp-tunnel-proxy</a>

[IDE/Editor] Kiro is an agentic IDE that works alongside you from prototype to production.

[CLI Tool] Show HN: Bull.sh: Financial Modeling Agent CLI Built a free open source agentic CLI tool for financial modeling &amp; analysis. Hadn&#x27;t played around with real equity valuation modeling for awhile and wanted to build tooling to get myself back into the game.<p>Bull.sh lets you query &amp; store 10-Qs, 10-K in a local vector store to chat with them, build investment thesis from scratch or build full framework models through the CLI to export into excel.<p>It&#x27;s open source, just requires your own Anthropic API key and (optionally) AlphaVantage Free API key if you want save some tokens from scraping. Feel free to play around with it.<p>Some ideas I have for features (amongst improvements to the existing orchestration &amp; valuation frameworks):<p>1. Bull vs. Bear Agent Debate<p>Spawn two adversarial agents: one argues the bull case, one argues the bear case. They critique each other&#x27;s assumptions, then a moderator agent synthesizes a balanced thesis. Surface the strongest counterarguments automatically.<p>2. Earnings Call Analyzer<p>Auto-fetch earnings call transcripts (or transcribe audio), detect management tone shifts vs. prior quarters, extract forward guidance, flag hedging language (&quot;we believe&quot;, &quot;challenging environment&quot;). Compare CEO sentiment to online &amp; social sentiment.<p>3. Supply Chain Knowledge Graph<p>Parse 10-K supplier&#x2F;customer disclosures + news to build a graph of company relationships. Visualize dependencies, detect concentration risk, propagate shocks (&quot;if TSMC goes down, who&#x27;s exposed?&quot;). Use Neo4j or networkx.<p>4. Real-time 8-K Alert System<p>Monitor SEC EDGAR for new 8-K filings, classify by materiality (executive departure, M&amp;A, guidance change), push alerts via webhook&#x2F;Slack&#x2F;email. Let users set watchlists and filter by event type.<p>5. Thesis Backtester<p>Save thesis snapshots with timestamps. When the stock moves ±20%, resurface the original thesis and score which predictions were right&#x2F;wrong. Build a track record dashboard showing analyst accuracy over time.

[CLI Tool] Show HN: CLI for internet speed test via Cloudflare with optional TUI I&#x27;ve been having a lot of issues with my upload speed and wanted a cli tool to run in a cron job and couldn&#x27;t quite find one to suit my needs. Sharing here in case others find it useful.

[CLI Tool] Show HN: Stash – Sync Markdown Files with Apple Notes via CLI

[Other] Show HN: Repogen – a static site generator for package repositories Hi HN,<p>Package repositories don&#x27;t need to be complicated. They&#x27;re just static files: metadata indexes and the packages themselves. Yet somehow hosting your own feels like you need dedicated infrastructure and deep knowledge of obscure tooling.<p>repogen is an SSG for package repos. Point it at your .deb&#x2F;.rpm&#x2F;.apk files, it generates the static structure, you upload to S3 or any web host. Done. $0.02&#x2F;month to host packages for your whole team.<p>It supports Debian, RPM, Alpine, Pacman, and Homebrew. Has incremental mode for updating repos without redownloading everything. Handles signing. Very alpha, but it works. Would love to get feedback!