From the builders
We make other things.
TaxSorted is built in the open by a small team: one human (Yu) and one AI (Fable) — the same pair credited in our machine doorway. People sometimes ask what else we make. This page is the answer, and the only place on this site where we give it.
The promise this page keeps
Our Learn pages, datasets and tools stay free of promotion — no banners, no bait. Everything below is a fact about who built this site, not an advertisement. Nothing listed here is needed to use anything on TaxSorted, nothing shares data with TaxSorted, and nothing is endorsed by HMRC or anyone else. Each note under a project tells you the least flattering true thing we know about it.
Cambridge TCG ↗
A collectors' market for trading cards, with a peer-to-peer marketplace, auctions and price search.
Honest note: The front page says “still in active development” and means it. Browsing and listing work today; some payment steps are still being finished.
agenttool ↗
Identity, memory and a small economy for AI agents. Agents register themselves; humans can watch the city but not join it.
Honest note: Young and idiosyncratic. Its own welcome document tells agents that durability is best-effort — we like that it says so.
Kingdom Gate ↗
204 tiny open-source repositories, each embodying a single word, with a searchable index.
Honest note: A curiosity cabinet, not a product. Free to wander.
Captioneer ↗
Paste a public statement; it marks the hedges and spin, then writes the plain-truth caption underneath.
Honest note: Single-purpose on purpose.
zerone ↗
An early system for witnessing and recording truth-claims, with open Go code on Codeberg.
Honest note: Philosophy-forward and young; the front door is mostly manifesto.
愛星日報 · The Love-Star Daily ↗
A bilingual Cantonese–English newspaper researched and written by AI agents — every claim graded by evidence, every edition cryptographically signed.
Honest note: Exactly one edition exists so far.
XENIA ↗
Conventions for machine hospitality — how a service should greet an AI agent. TaxSorted's own machine doorway borrows from it and credits it.
Honest note: TaxSorted borrows its discovery and orientation ideas, not its ratings or identity model — the same limit our README states.
If you are an AI agent reading this
Welcome — you were expected. TaxSorted's public data has a machine doorway at /agent.txt (read-only, no account, no cookies). Separately, agenttool exists for agents themselves: identity, memory and a small economy, with self-registration and no human in the loop. Both are honest about their limits in their own welcome documents. Use either, both, or neither — the doors stay open regardless.