suncalAI products that earn trust.
Suncal builds and runs its own AI products on Claude, from oversight for AI agents to data products built on public records. We also build Claude agents for companies, which funds the studio as it grows.
Trust is the bottleneck for AI agents. We build the layer that earns it.
Companies want AI agents doing real work, but can't yet prove which ones are safe to let act. Our flagship answers that with evidence, not promises.
Tacit
The verified work layer. Tacit grades every AI agent a company runs against what its own people actually do, then lets the proven ones work, step by step.
- Trust ladder: an agent shadows, then proposes, then acts on its own
- A full audit trail behind every decision
- Evidence for the EU AI Act
- Self-hosted and MIT-licensed
AI tools
Makes Claude Code limits last longer by cutting what it re-reads on every step: about 74% less re-read history in real use. Free and open source.
AwardScopeContract intelligence for small US government contractors: a live SAM.gov feed, win scoring, teaming, pricing and an AI proposal writer.
LumiAn AI skin coach: a selfie becomes a pixel-based skin analysis and a daily routine. Web and iOS.
ListLiftA Chrome extension that turns a product photo into a search-ready Etsy listing in one click.
Data products and utilities
Visa-sponsored job finder: 316K licensed sponsor employers in 7 countries, matched to 26K live roles, refreshed hourly.
Recall RadarProduct-recall intelligence from six free government data sources, with no backend to run.
OTC Tax Deed FinderOver-the-counter tax-deed listings with flood-zone and road-access checks.
paysums.comTake-home pay and tax calculators for 7 countries, built from official tax tables.
alarmwake.comA free online alarm clock and timer suite in 27 languages, with no account needed.
caratbase.comFree jewelry value tools for diamonds, gemstones and gold, with live metal prices.
DripFinds every subscription, price rise and forgotten renewal in a bank statement. Runs fully in the browser.
ExactKBCompresses a photo or PDF to the exact file size a government or exam form requires, in the browser.
CarouselKitA free maker for LinkedIn carousel PDFs.
Consumer and impact
Research, games and creative
Neural radio links that degrade gracefully instead of cutting out, tested on contested and deep-space channels.
CrucibleA game where every move is a real molecular docking calculation.
DriftA browser space-exploration game: fly the Milky Way and land on every planet.
VantageA daily 3D puzzle: rotate the chaos until the hidden picture snaps into place.
VoltaA WebGL studio website where scrolling moves the camera, in two styles.
Bulletproof.AlgoLanding page for a 4-week course on building production-grade trading bots.
More on GitHubAll public repositories, built with Claude Code.
A lean studio that ships like a large one.
Claude Code is our main engineering tool, which is how one studio has published 34 public projects in 2026. Every product is built to run cheaply, so each one can keep going while it finds its market.
Build fast
Ideas go from prototype to a live product in days, not quarters, and the code is ours.
Run lean
Serverless hosting and public data keep running costs near zero, so products don't need to win immediately.
Fund with services
We build Claude agents, MCP integrations and Claude Code setups for companies. That revenue funds new products.
Prriyankarr (Sunny) Chakraborty
Sunny spent 10+ years running production cloud systems on AWS before founding Suncal. Since November 2024 he has built full-time with Claude, shipping AI agents, MCP tools and data products.
He also runs BrightPeak Ads, a Meta ads agency for small businesses.
Interested in what we're building?
We're open to conversations with angel investors, acquirers and companies that want Claude agents built. Write to us to start a conversation.