https://shinyakato.dev/portfolio/Projects I have shipped with something public to point at — records, not a blog.enhi@shinyakato.dev (Shinya Kato)hi@shinyakato.dev (Shinya Kato)Sat, 01 Aug 2026 00:00:00 +0000https://shinyakato.dev/portfolio/shinyakato-dev/Sat, 01 Aug 2026 00:00:00 +0000https://shinyakato.dev/portfolio/shinyakato-dev/A static site generated by Hugo, holding a profile page of links and this archive. A push to CodeCommit runs a CodeBuild project that syncs it to S3 behind CloudFront.personalhttps://shinyakato.dev/portfolio/feed-generator/Wed, 01 Jul 2026 00:00:00 +0000https://shinyakato.dev/portfolio/feed-generator/A template for a Bluesky custom feed generator in Dart: a firehose indexer, a swappable ranking algorithm and store, and the three endpoints AppView calls, served over shelf.personalosshttps://shinyakato.dev/portfolio/bluesky-text-flutter/Wed, 01 Jul 2026 00:00:00 +0000https://shinyakato.dev/portfolio/bluesky-text-flutter/The last mile between bluesky_text and a Bluesky client: a text controller that highlights entities and the over-limit tail while typing, and a viewer for fetched posts.personalosshttps://shinyakato.dev/portfolio/atproto-identity/Wed, 01 Jul 2026 00:00:00 +0000https://shinyakato.dev/portfolio/atproto-identity/Resolves an AT Protocol handle or DID to its DID document, PDS origin and signing key, and verifies the service-auth tokens arriving at a feed generator or an AppView.personalosshttps://shinyakato.dev/portfolio/dayonelabs/Sun, 01 Feb 2026 00:00:00 +0000https://shinyakato.dev/portfolio/dayonelabs/A technical blog built with Docusaurus. Drafts become MDX via Claude Code and Kiro; a push to CodeCommit runs CodePipeline and CodeBuild, and S3 and CloudFront serve it.personalhttps://shinyakato.dev/portfolio/astra/Thu, 01 Jan 2026 00:00:00 +0000https://shinyakato.dev/portfolio/astra/A serverless AWS platform that fetches space-related content, transforms it, and distributes it to several social networks. A full Java rewrite of the 2023 APOD Bot for Bluesky.personalhttps://shinyakato.dev/portfolio/at-primitives/Mon, 01 Sep 2025 00:00:00 +0000https://shinyakato.dev/portfolio/at-primitives/The identifier layer under the atproto.dart packages: handle and DID validation, AT URI parsing, NSID, TID and record keys. It declares no other package in the monorepo.personalosshttps://shinyakato.dev/portfolio/lex-gen/Tue, 01 Jul 2025 00:00:00 +0000https://shinyakato.dev/portfolio/lex-gen/A code generator that turns AT Protocol Lexicon documents into Dart models, service classes and CLI commands. It generates atproto, bluesky and bluesky_cli.personalosshttps://shinyakato.dev/portfolio/dayonelabs-wordpress/Wed, 01 Jan 2025 00:00:00 +0000https://shinyakato.dev/portfolio/dayonelabs-wordpress/A technical blog running WordPress on Amazon Lightsail. It was replaced by a Docusaurus static site over authoring experience and running cost.personalhttps://shinyakato.dev/portfolio/aws-lambda-dart-runtime-ns/Mon, 01 Apr 2024 00:00:00 +0000https://shinyakato.dev/portfolio/aws-lambda-dart-runtime-ns/A custom AWS Lambda runtime for Dart, restructured from the AWS Labs runtime for current Dart SDKs. One deployment registers several named handlers.personalosshttps://shinyakato.dev/portfolio/did-plc/Wed, 01 Nov 2023 00:00:00 +0000https://shinyakato.dev/portfolio/did-plc/A Dart client for the DID PLC Directory — document, operation-log and audit-log lookups with caching, batching and streaming, plus ECDSA signing and verification.personalosshttps://shinyakato.dev/portfolio/atproto-oauth/Wed, 01 Nov 2023 00:00:00 +0000https://shinyakato.dev/portfolio/atproto-oauth/A Dart implementation of the AT Protocol OAuth profile: pushed authorisation requests, PKCE, DPoP-bound tokens and automatic refresh, with every stage of the flow pluggable.personalosshttps://shinyakato.dev/portfolio/icann-tlds/Fri, 01 Sep 2023 00:00:00 +0000https://shinyakato.dev/portfolio/icann-tlds/A Dart list of every official top-level domain, with domain and email validators over it. A daily GitHub Actions job regenerates the list from IANA and releases the diff.personalosshttps://shinyakato.dev/portfolio/multiformats/Thu, 01 Jun 2023 00:00:00 +0000https://shinyakato.dev/portfolio/multiformats/A Dart implementation of IPFS v1 CIDs — parsing, creation, the DAG-JSON and AT Protocol JSON forms, and a canonical DAG-CBOR encoder that is exact on the VM and the web.personalosshttps://shinyakato.dev/portfolio/bluesky-text/Mon, 01 May 2023 00:00:00 +0000https://shinyakato.dev/portfolio/bluesky-text/A Dart library that detects handles, links and tags in Bluesky Social post text and converts them into the facets the API expects.personalosshttps://shinyakato.dev/portfolio/apod-bot/Sat, 01 Apr 2023 00:00:00 +0000https://shinyakato.dev/portfolio/apod-bot/A bot that posts the NASA Astronomy Picture of the Day image and explanation to Bluesky every day. Written in Dart, running on AWS Lambda and scheduled by Amazon EventBridge.personalhttps://shinyakato.dev/portfolio/xrpc/Wed, 01 Mar 2023 00:00:00 +0000https://shinyakato.dev/portfolio/xrpc/A wrapped HTTP client for the AT Protocol's XRPC layer: typed queries and procedures, blob upload, rate-limit handling, and WebSocket subscriptions for event streams.personalosshttps://shinyakato.dev/portfolio/lexicon/Wed, 01 Mar 2023 00:00:00 +0000https://shinyakato.dev/portfolio/lexicon/A parser for AT Protocol Lexicon schema documents, shipping the official lexicons as generated Dart constants. It is the input the lex_gen code generator reads.personalosshttps://shinyakato.dev/portfolio/bluesky-post/Wed, 01 Mar 2023 00:00:00 +0000https://shinyakato.dev/portfolio/bluesky-post/A Docker-based GitHub Action that posts to Bluesky Social from a workflow: images, video, replies, quotes, link previews and automatic facets.personalosshttps://shinyakato.dev/portfolio/bluesky-cli/Wed, 01 Mar 2023 00:00:00 +0000https://shinyakato.dev/portfolio/bluesky-cli/A Dart command-line tool that runs Bluesky Social and AT Protocol XRPC methods from the shell. It installs as bsky, and its commands are generated from the lexicons.personalosshttps://shinyakato.dev/portfolio/bluesky/Wed, 01 Mar 2023 00:00:00 +0000https://shinyakato.dev/portfolio/bluesky/A Dart/Flutter client library for Bluesky Social covering the app.bsky.* and chat.bsky.* namespaces, and including everything the atproto package provides.personalosshttps://shinyakato.dev/portfolio/atprotodart-com/Wed, 01 Mar 2023 00:00:00 +0000https://shinyakato.dev/portfolio/atprotodart-com/A Docusaurus documentation site for atproto.dart, covering the getting-started guide, API reference and the Lexicon listing. It lives in the monorepo's website directory.personalosshttps://shinyakato.dev/portfolio/atproto-dart/Wed, 01 Mar 2023 00:00:00 +0000https://shinyakato.dev/portfolio/atproto-dart/The monorepo for the Dart/Flutter AT Protocol and Bluesky Social SDK: fifteen packages, among them atproto, bluesky, bluesky_text and lex_gen, fourteen in one pub workspace.personalosshttps://shinyakato.dev/portfolio/atproto-core/Wed, 01 Mar 2023 00:00:00 +0000https://shinyakato.dev/portfolio/atproto-core/The package the atproto and bluesky libraries are built on: sessions and JWT decoding, a pluggable retry engine, XRPC and HTTP plumbing, and blob and CAR handling.personalosshttps://shinyakato.dev/portfolio/atproto/Wed, 01 Mar 2023 00:00:00 +0000https://shinyakato.dev/portfolio/atproto/A Dart/Flutter client library covering the com.atproto.* namespace of the AT Protocol. It is the core package of the atproto.dart monorepo.personalosshttps://shinyakato.dev/portfolio/deck-blue/Sun, 01 Jan 2023 00:00:00 +0000https://shinyakato.dev/portfolio/deck-blue/A Bluesky web client that shows several timelines side by side as columns. Built with Flutter for the web and using the atproto.dart SDK.collaborativehttps://shinyakato.dev/portfolio/mastodon-oauth2/Tue, 01 Nov 2022 00:00:00 +0000https://shinyakato.dev/portfolio/mastodon-oauth2/A Flutter library that runs the Mastodon API's OAuth 2.0 authorization code flow in an app and returns an access token. Runs on Android, iOS, Linux, macOS, Web and Windows.personalosshttps://shinyakato.dev/portfolio/mastodon-api/Tue, 01 Nov 2022 00:00:00 +0000https://shinyakato.dev/portfolio/mastodon-api/A Dart/Flutter client library for the Mastodon API. Its README documents nine services across the v1 and v2 endpoints, with typed response objects and automatic retry.personalosshttps://shinyakato.dev/portfolio/twitter-oembed-api/Mon, 01 Aug 2022 00:00:00 +0000https://shinyakato.dev/portfolio/twitter-oembed-api/A Dart and Flutter client for the Twitter oEmbed API, returning the markup for an embedded tweet or an embedded timeline. Two methods, and no credentials to configure.personalosshttps://shinyakato.dev/portfolio/twitter-oauth2-pkce/Sun, 01 May 2022 00:00:00 +0000https://shinyakato.dev/portfolio/twitter-oauth2-pkce/A Flutter library that adds the Twitter API's OAuth 2.0 PKCE authorization code flow to an app. Runs on Android, iOS, Linux, macOS, Web and Windows.personalosshttps://shinyakato.dev/portfolio/twitter-api-v2/Fri, 01 Apr 2022 00:00:00 +0000https://shinyakato.dev/portfolio/twitter-api-v2/A Dart/Flutter client library for the Twitter API v2.0, with OAuth 1.0a and 2.0, streaming, media upload and automatic retry.personalosshttps://shinyakato.dev/portfolio/console-color/Tue, 01 Mar 2022 00:00:00 +0000https://shinyakato.dev/portfolio/console-color/A Dart enum with one member per Xterm palette entry, each documented with its hex, RGB and HSL values. Its code getter returns the number a terminal expects.personalosshttps://shinyakato.dev/portfolio/text-divider/Tue, 01 Feb 2022 00:00:00 +0000https://shinyakato.dev/portfolio/text-divider/A Flutter widget that places a Text in the middle of a Divider, horizontally or vertically, leaving the rule's size, thickness, indent and colour to the caller.personalosshttps://shinyakato.dev/portfolio/sweet-cookie-jar/Wed, 01 Dec 2021 00:00:00 +0000https://shinyakato.dev/portfolio/sweet-cookie-jar/A Dart library that extends the dart:io Cookie class and reads cookies off an http package response, including a response whose header sets more than one at a time.personalosshttps://shinyakato.dev/portfolio/app-version/Wed, 01 Dec 2021 00:00:00 +0000https://shinyakato.dev/portfolio/app-version/A Flutter widget that displays the running application's version status and, when a newer release is available, opens a prompt carrying its release notes.personalosshttps://shinyakato.dev/portfolio/reflection-test-helper/Mon, 01 Mar 2021 00:00:00 +0000https://shinyakato.dev/portfolio/reflection-test-helper/A Java helper for tests that have to reach a private method or field. from takes the class under test, addArgument its parameters, and invokeMethod calls the method by name.personalosshttps://shinyakato.dev/portfolio/zenna-db/Mon, 01 Feb 2021 00:00:00 +0000https://shinyakato.dev/portfolio/zenna-db/A Java framework that maps JSON content files onto entity classes through annotations. Its stated aim is flexibility with a small implementation.personalosshttps://shinyakato.dev/portfolio/epitaph/Sun, 01 Nov 2020 00:00:00 +0000https://shinyakato.dev/portfolio/epitaph/A Java wrapper over java.util.regex whose builder takes either a raw pattern or one of 34 named presets, then answers find, matches and group against an input.personalosshttps://shinyakato.dev/portfolio/envali/Thu, 01 Oct 2020 00:00:00 +0000https://shinyakato.dev/portfolio/envali/A Java framework that validates an entity's fields from annotations declared on them. Envali.validate reflects over the fields and reports recoverable and unrecoverable errors.personalosshttps://shinyakato.dev/portfolio/precondition-validator/Tue, 01 Sep 2020 00:00:00 +0000https://shinyakato.dev/portfolio/precondition-validator/A Java library of static precondition checks. Its one class, Preconditions, returns silently when an argument is acceptable and throws at once when it is not.personalosshttps://shinyakato.dev/portfolio/content-framework/Sat, 01 Aug 2020 00:00:00 +0000https://shinyakato.dev/portfolio/content-framework/A Java framework that moves values and conditions out of source code and into JSON content files, so behaviour can change without the source being edited.personalosshttps://shinyakato.dev/portfolio/catalog-api/Sat, 01 Aug 2020 00:00:00 +0000https://shinyakato.dev/portfolio/catalog-api/A Java interface an enum implements to gain lookup by code or by tag value, membership checks and an ordered list, all as static methods on Catalog and BiCatalog.personaloss