Source: https://seerepo.com/r/bluesky-social/atproto/built Markdown source: https://seerepo.com/r/bluesky-social/atproto/built.md Description: atproto is a TypeScript repo built with Express, Expo, Vite, React, and TanStack. It reaches its data with kysely. # What is atproto built with? atproto is a TypeScript repo built with Express, Expo, Vite, React, and TanStack. It reaches its data with kysely, signs people in with jose, com.nimbusds:nimbus-jose-jwt, and @hcaptcha/react-hcaptcha, stores files in AWS S3, uses AI through lande, makes its content with sharp, nodemailer, and file-type, validates its data with Zod, @hapi/address, disposable-email-domains-js, and @standard-schema/spec, is tested with Jest, Vitest, and Puppeteer, deploys with @opentelemetry/semantic-conventions, pino, pino-http, OpenTelemetry, prom-client, and 2 more, and uses @aws-sdk/lib-storage, Postgres, Redis, SQLite, lru-cache, and 2 more. It has 385,793 written lines, with 556 test files. Read on November 14, 2026, at commit 9f605e0. Repository: https://github.com/bluesky-social/atproto ## Support (packages/api) ### Validation - **[Zod](https://seerepo.com/uses/zod)**: 1 file ### Testing - **Jest**: 1 file ### Other - **await-lock**: 1 file - **http-terminator**: 1 file - **tlds**: 1 file ## Backend (packages/aws) ### Data - **@aws-sdk/lib-storage**: 1 file ### Services - **[AWS S3](https://seerepo.com/uses/aws-s3)**: 1 file · [packages/aws/src/s3.ts, line 2](https://github.com/bluesky-social/atproto/blob/9f605e0fb117173dea8b5c1e9d6ad13bd6995c7f/packages/aws/src/s3.ts#L2) ## Support (packages/aws) ### Testing - **Vitest**: 1 file ### Other - **[aws-sdk](https://seerepo.com/uses/aws-sdk)**: 2 files - **@noble/curves**: 1 file - **multiformats**: 1 file ## Backend (packages/bsky) ### The base - **[Express](https://seerepo.com/uses/express)**: 17 files · [in packages/pds/package.json](https://github.com/bluesky-social/atproto/blob/9f605e0fb117173dea8b5c1e9d6ad13bd6995c7f/packages/pds/package.json) ### Data - **[Postgres](https://seerepo.com/uses/postgres)**: 1 file · [packages/ozone/src/db/index.ts, line 15](https://github.com/bluesky-social/atproto/blob/9f605e0fb117173dea8b5c1e9d6ad13bd6995c7f/packages/ozone/src/db/index.ts#L15) - **[Redis](https://seerepo.com/uses/redis)**: 1 file · [packages/bsky/src/redis.ts, line 2](https://github.com/bluesky-social/atproto/blob/9f605e0fb117173dea8b5c1e9d6ad13bd6995c7f/packages/bsky/src/redis.ts#L2) ### Data access - **[kysely](https://seerepo.com/uses/kysely)**: 109 files ### Sign-in - **[jose](https://seerepo.com/uses/jose)**: 1 file ## Support (packages/bsky) ### Content - **[sharp](https://seerepo.com/uses/sharp)**: 2 files ### Validation - **[Zod](https://seerepo.com/uses/zod)**: 4 files - **@hapi/address**: 2 files - **disposable-email-domains-js**: 2 files ### Testing - **Vitest**: 111 files ### Deploy - **[@opentelemetry/semantic-conventions](https://seerepo.com/uses/opentelemetry-semantic-conventions)**: 1 file - **[pino](https://seerepo.com/uses/pino)**: 1 file - **[pino-http](https://seerepo.com/uses/pino-http)**: 1 file ### Other - **connectrpc**: 37 files - **@bufbuild/protobuf**: 14 files - **uint8arrays**: 5 files - **http-errors**: 3 files - **undici**: 3 files - **@growthbook/growthbook**: 2 files - **http-terminator**: 2 files - **OpenTelemetry**: 2 files - **@noble/curves**: 1 file - **compression**: 1 file - **cors**: 1 file - **murmurhash**: 1 file - **p-queue**: 1 file - **structured-headers**: 1 file ## Backend (packages/bsync) ### Data - **[Postgres](https://seerepo.com/uses/postgres)**: 1 file · [packages/ozone/src/db/index.ts, line 15](https://github.com/bluesky-social/atproto/blob/9f605e0fb117173dea8b5c1e9d6ad13bd6995c7f/packages/ozone/src/db/index.ts#L15) ### Data access - **[kysely](https://seerepo.com/uses/kysely)**: 17 files ## Support (packages/bsync) ### Deploy - **[@opentelemetry/semantic-conventions](https://seerepo.com/uses/opentelemetry-semantic-conventions)**: 1 file - **[pino-http](https://seerepo.com/uses/pino-http)**: 1 file ### Tools - **get-port**: 5 files ### Other - **connectrpc**: 14 files - **OpenTelemetry**: 2 files - **@bufbuild/protobuf**: 1 file - **http-terminator**: 1 file ## Support (packages/common-web) ### Validation - **[Zod](https://seerepo.com/uses/zod)**: 2 files ## Support (packages/common) ### Testing - **Vitest**: 4 files ### Deploy - **[pino](https://seerepo.com/uses/pino)**: 1 file ### Other - **uint8arrays**: 2 files - **multiformats**: 1 file ## Support (packages/crypto) ### Other - **uint8arrays**: 10 files - **noble**: 8 files ## Backend (packages/dev-env) ### The base - **[Express](https://seerepo.com/uses/express)**: 1 file · [in packages/pds/package.json](https://github.com/bluesky-social/atproto/blob/9f605e0fb117173dea8b5c1e9d6ad13bd6995c7f/packages/pds/package.json) ## Support (packages/dev-env) ### Tools - **get-port**: 1 file ### Other - **uint8arrays**: 4 files - **http-terminator**: 2 files - **multiformats**: 1 file - **undici**: 1 file ## Support (packages/did) ### Validation - **[Zod](https://seerepo.com/uses/zod)**: 3 files ## Backend (packages/identity) ### The base - **[Express](https://seerepo.com/uses/express)**: 1 file · [in packages/pds/package.json](https://github.com/bluesky-social/atproto/blob/9f605e0fb117173dea8b5c1e9d6ad13bd6995c7f/packages/pds/package.json) ## Support (packages/identity) ### Testing - **Jest**: 3 files ### Tools - **get-port**: 2 files ### Other - **cors**: 1 file ## Support (packages/internal/did-resolver) ### Validation - **[Zod](https://seerepo.com/uses/zod)**: 1 file ## Support (packages/internal/fetch-node) ### Testing - **Vitest**: 4 files ### Other - **ipaddr.js**: 2 files ## Support (packages/internal/fetch) ### Testing - **Vitest**: 2 files ## Support (packages/internal/handle-resolver) ### Validation - **[Zod](https://seerepo.com/uses/zod)**: 1 file ### Testing - **Vitest**: 1 file ## Backend (packages/internal/opentelemetry-node) ### Data - **[SQLite](https://seerepo.com/uses/sqlite)**: 1 file · [packages/pds/src/db/db.ts, line 2](https://github.com/bluesky-social/atproto/blob/9f605e0fb117173dea8b5c1e9d6ad13bd6995c7f/packages/pds/src/db/db.ts#L2) ## Support (packages/internal/opentelemetry-node) ### Testing - **Vitest**: 5 files ### Deploy - **OpenTelemetry**: 5 files ### Tools - **import-in-the-middle**: 1 file ### Other - **[opentelemetry](https://seerepo.com/uses/opentelemetry)**: 5 files ## Support (packages/internal/rolldown-plugin-bundle-manifest) ### Tools - **Rolldown**: 1 file ### Other - **mime**: 1 file ## Backend (packages/internal/simple-store-memory) ### Data - **[lru-cache](https://seerepo.com/uses/lru-cache)**: 1 file ## Support (packages/internal/simple-store) ### Testing - **Vitest**: 2 files ## Support (packages/internal/xrpc-utils) ### Testing - **Vitest**: 1 file ## Support (packages/lex-cli) ### Validation - **[Zod](https://seerepo.com/uses/zod)**: 1 file ### Tools - **ts-morph**: 4 files - **commander**: 1 file - **Prettier**: 1 file ### Other - **chalk**: 1 file ## Support (packages/lex/lex-builder) ### Testing - **Vitest**: 3 files ### Tools - **ts-morph**: 3 files - **Prettier**: 1 file - **yargs**: 1 file ## Support (packages/lex/lex-cbor) ### Testing - **Vitest**: 5 files ### Other - **cborg**: 1 file ## Support (packages/lex/lex-client) ### Testing - **Vitest**: 1 file ## Support (packages/lex/lex-data) ### Testing - **Vitest**: 17 files ### Other - **multiformats**: 5 files - **core-js**: 3 files - **unicode-segmenter**: 1 file ## Support (packages/lex/lex-document) ### Testing - **Vitest**: 3 files ## Support (packages/lex/lex-installer) ### Testing - **Vitest**: 4 files ### Tools - **Prettier**: 1 file - **yargs**: 1 file ## Support (packages/lex/lex-json) ### Testing - **Vitest**: 6 files ## Support (packages/lex/lex-password-session) ### Testing - **Vitest**: 2 files ## Support (packages/lex/lex-resolver) ### Testing - **Vitest**: 1 file ## Support (packages/lex/lex-rpc) ### Testing - **Vitest**: 7 files ## Support (packages/lex/lex-schema) ### Validation - **[@standard-schema/spec](https://seerepo.com/uses/standard-schema-spec)**: 2 files ### Testing - **Vitest**: 42 files ## Support (packages/lex/lex-server) ### Testing - **Vitest**: 5 files ### Other - **http-terminator**: 1 file - **ws**: 1 file ## Support (packages/lex/lex) ### Testing - **Vitest**: 14 files ## Support (packages/lexicon-resolver) ### Testing - **Vitest**: 2 files ## Support (packages/lexicon) ### Validation - **[Zod](https://seerepo.com/uses/zod)**: 3 files ### Other - **multiformats**: 4 files ## Backend (packages/oauth/jwk-jose) ### Sign-in - **[jose](https://seerepo.com/uses/jose)**: 1 file ## Support (packages/oauth/jwk) ### Validation - **[Zod](https://seerepo.com/uses/zod)**: 5 files ### Other - **multiformats**: 1 file ## Support (packages/oauth/oauth-client-browser) ### Other - **core-js**: 3 files ## Frontend (packages/oauth/oauth-client-expo) ### The base - **[Expo](https://seerepo.com/uses/expo)**: 1 file ## Backend (packages/oauth/oauth-client-expo) ### Data - **react-native-mmkv**: 2 files ### Sign-in - **com.nimbusds:nimbus-jose-jwt**: 2 files ## Support (packages/oauth/oauth-client-expo) ### Other - **core-js**: 2 files - **expo-web-browser**: 1 file - **react-native-url-polyfill**: 1 file ## Support (packages/oauth/oauth-client) ### Validation - **[Zod](https://seerepo.com/uses/zod)**: 1 file ### Testing - **Vitest**: 3 files ### Other - **multiformats**: 2 files - **core-js**: 1 file ## Frontend (packages/oauth/oauth-provider-ui) ### The base - **[Vite](https://seerepo.com/uses/vite)**: [in packages/oauth/oauth-provider-ui/package.json](https://github.com/bluesky-social/atproto/blob/9f605e0fb117173dea8b5c1e9d6ad13bd6995c7f/packages/oauth/oauth-provider-ui/package.json) - **[React](https://seerepo.com/uses/react)**: 104 files · [in packages/oauth/oauth-provider-ui/package.json](https://github.com/bluesky-social/atproto/blob/9f605e0fb117173dea8b5c1e9d6ad13bd6995c7f/packages/oauth/oauth-provider-ui/package.json) - **[TanStack](https://seerepo.com/uses/tanstack)**: 15 files ### Styles - **[Tailwind CSS](https://seerepo.com/uses/tailwind-css)** - **[class-variance-authority](https://seerepo.com/uses/class-variance-authority)**: 6 files - **[tailwind-merge](https://seerepo.com/uses/tailwind-merge)**: 1 file ### Interface - **[Base UI](https://seerepo.com/uses/base-ui)**: 18 files - **[react-error-boundary](https://seerepo.com/uses/react-error-boundary)**: 3 files ### Icons - **[Lucide](https://seerepo.com/uses/lucide)**: 36 files ## Backend (packages/oauth/oauth-provider-ui) ### Sign-in - **@hcaptcha/react-hcaptcha**: 1 file ## Support (packages/oauth/oauth-provider-ui) ### Testing - **Vitest**: 5 files ### Other - **lingui**: 93 files - **@tanstack/react-query**: 9 files - **clsx**: 4 files - **ua-parser-js**: 1 file ## Backend (packages/oauth/oauth-provider) ### Data - **[Redis](https://seerepo.com/uses/redis)**: 1 file · [packages/bsky/src/redis.ts, line 2](https://github.com/bluesky-social/atproto/blob/9f605e0fb117173dea8b5c1e9d6ad13bd6995c7f/packages/bsky/src/redis.ts#L2) ### Sign-in - **[jose](https://seerepo.com/uses/jose)**: 4 files ## Support (packages/oauth/oauth-provider) ### Validation - **[Zod](https://seerepo.com/uses/zod)**: 40 files - **@hapi/address**: 1 file - **disposable-email-domains-js**: 1 file ### Testing - **Vitest**: 9 files ### Other - **http-errors**: 6 files - **hapi**: 3 files - **cookie**: 1 file ## Support (packages/oauth/oauth-resolver) ### Validation - **[Zod](https://seerepo.com/uses/zod)**: 1 file ### Testing - **Vitest**: 1 file ## Support (packages/oauth/oauth-scopes) ### Testing - **Vitest**: 12 files ## Support (packages/oauth/oauth-types) ### Validation - **[Zod](https://seerepo.com/uses/zod)**: 42 files ## Backend (packages/ozone) ### The base - **[Express](https://seerepo.com/uses/express)**: 6 files · [in packages/pds/package.json](https://github.com/bluesky-social/atproto/blob/9f605e0fb117173dea8b5c1e9d6ad13bd6995c7f/packages/pds/package.json) ### Data - **[Postgres](https://seerepo.com/uses/postgres)**: 1 file · [packages/ozone/src/db/index.ts, line 15](https://github.com/bluesky-social/atproto/blob/9f605e0fb117173dea8b5c1e9d6ad13bd6995c7f/packages/ozone/src/db/index.ts#L15) ### Data access - **[kysely](https://seerepo.com/uses/kysely)**: 126 files ### AI - **lande**: 1 file ## Support (packages/ozone) ### Testing - **Jest**: 20 files ### Deploy - **[prom-client](https://seerepo.com/uses/prom-client)**: 6 files - **@opentelemetry/instrumentation-pg**: 1 file - **[pino-http](https://seerepo.com/uses/pino-http)**: 1 file ### Other - **ws**: 3 files - **p-queue**: 2 files - **compression**: 1 file - **cors**: 1 file - **http-terminator**: 1 file - **multiformats**: 1 file - **structured-headers**: 1 file - **uint8arrays**: 1 file - **undici**: 1 file ## Backend (packages/pds) ### The base - **[Express](https://seerepo.com/uses/express)**: 12 files · [in packages/pds/package.json](https://github.com/bluesky-social/atproto/blob/9f605e0fb117173dea8b5c1e9d6ad13bd6995c7f/packages/pds/package.json) ### Data - **@opentelemetry/instrumentation-ioredis**: 1 file - **[Redis](https://seerepo.com/uses/redis)**: 1 file · [packages/bsky/src/redis.ts, line 2](https://github.com/bluesky-social/atproto/blob/9f605e0fb117173dea8b5c1e9d6ad13bd6995c7f/packages/bsky/src/redis.ts#L2) - **[SQLite](https://seerepo.com/uses/sqlite)**: 1 file · [packages/pds/src/db/db.ts, line 2](https://github.com/bluesky-social/atproto/blob/9f605e0fb117173dea8b5c1e9d6ad13bd6995c7f/packages/pds/src/db/db.ts#L2) ### Data access - **[kysely](https://seerepo.com/uses/kysely)**: 33 files ### Sign-in - **[jose](https://seerepo.com/uses/jose)**: 3 files ## Support (packages/pds) ### Content - **[nodemailer](https://seerepo.com/uses/nodemailer)**: 3 files - **[file-type](https://seerepo.com/uses/file-type)**: 1 file ### Validation - **@hapi/address**: 2 files - **disposable-email-domains-js**: 2 files - **[Zod](https://seerepo.com/uses/zod)**: 1 file ### Testing - **Jest**: 11 files - **Puppeteer**: 4 files ### Deploy - **@opentelemetry/instrumentation-aws-sdk**: 1 file - **[pino](https://seerepo.com/uses/pino)**: 1 file - **[pino-http](https://seerepo.com/uses/pino-http)**: 1 file ### Tools - **get-port**: 1 file ### Other - **p-queue**: 4 files - **uint8arrays**: 3 files - **undici**: 2 files - **@noble/curves**: 1 file - **compression**: 1 file - **cors**: 1 file - **express-async-errors**: 1 file - **http-terminator**: 1 file - **OpenTelemetry**: 1 file - **strtok3**: 1 file - **ws**: 1 file ## Support (packages/repo) ### Validation - **[Zod](https://seerepo.com/uses/zod)**: 2 files ## Support (packages/sync) ### Other - **p-queue**: 1 file ## Support (packages/syntax) ### Testing - **Vitest**: 10 files ## Backend (packages/tap) ### The base - **[Express](https://seerepo.com/uses/express)**: 1 file · [in packages/pds/package.json](https://github.com/bluesky-social/atproto/blob/9f605e0fb117173dea8b5c1e9d6ad13bd6995c7f/packages/pds/package.json) ## Support (packages/tap) ### Testing - **Vitest**: 5 files ### Other - **ws**: 2 files - **http-terminator**: 1 file ## Support (packages/ws-client) ### Testing - **Vitest**: 9 files ### Other - **http-terminator**: 1 file - **ws**: 1 file ## Backend (packages/xrpc-server) ### The base - **[Express](https://seerepo.com/uses/express)**: 3 files · [in packages/pds/package.json](https://github.com/bluesky-social/atproto/blob/9f605e0fb117173dea8b5c1e9d6ad13bd6995c7f/packages/pds/package.json) ## Support (packages/xrpc-server) ### Testing - **Jest**: 1 file - **[jose](https://seerepo.com/uses/jose)**: 1 file ### Other - **ws**: 2 files - **@noble/curves**: 1 file - **body-parser**: 1 file - **http-errors**: 1 file - **mime-types**: 1 file - **multiformats**: 1 file - **rate-limiter-flexible**: 1 file ## Support (packages/xrpc) ### Validation - **[Zod](https://seerepo.com/uses/zod)**: 1 file ## Support (services/ozone) ### Deploy - **[prom-client](https://seerepo.com/uses/prom-client)**: 2 files ## Other repos with a similar stack - [payloadcms/payload](https://seerepo.com/r/payloadcms/payload/built): @aws-sdk/lib-storage, AWS S3, Postgres, Redis, SQLite, Vite, React, TanStack, Zod, jose, sharp, pino, @standard-schema/spec, react-error-boundary, nodemailer, file-type · [Compare](https://seerepo.com/compare/bluesky-social/atproto/vs/payloadcms/payload) - [ruvnet/ruflo](https://seerepo.com/r/ruvnet/ruflo/built): Express, Postgres, SQLite, Vite, React, Zod, jose, sharp, pino, Tailwind CSS, class-variance-authority, tailwind-merge, Lucide, prom-client, file-type · [Compare](https://seerepo.com/compare/bluesky-social/atproto/vs/ruvnet/ruflo) - [calcom/cal.diy](https://seerepo.com/r/calcom/cal.diy/built): Postgres, Redis, lru-cache, React, TanStack, Zod, kysely, jose, sharp, Tailwind CSS, class-variance-authority, tailwind-merge, Base UI, Lucide, nodemailer · [Compare](https://seerepo.com/compare/bluesky-social/atproto/vs/calcom/cal.diy) - [paperclipai/paperclip](https://seerepo.com/r/paperclipai/paperclip/built): AWS S3, Express, Postgres, Vite, React, Zod, sharp, pino, pino-http, Tailwind CSS, class-variance-authority, tailwind-merge, Base UI, Lucide · [Compare](https://seerepo.com/compare/bluesky-social/atproto/vs/paperclipai/paperclip) - [TryGhost/Ghost](https://seerepo.com/r/TryGhost/Ghost/built): Express, lru-cache, Vite, React, Zod, jose, sharp, Tailwind CSS, class-variance-authority, tailwind-merge, react-error-boundary, Lucide, nodemailer, file-type · [Compare](https://seerepo.com/compare/bluesky-social/atproto/vs/TryGhost/Ghost) - [CherryHQ/cherry-studio](https://seerepo.com/r/CherryHQ/cherry-studio/built): @aws-sdk/lib-storage, SQLite, lru-cache, Vite, React, TanStack, Zod, sharp, Tailwind CSS, class-variance-authority, tailwind-merge, react-error-boundary, Lucide, file-type · [Compare](https://seerepo.com/compare/bluesky-social/atproto/vs/CherryHQ/cherry-studio) ## Frequently asked questions ### What language is atproto written in? atproto is written in TypeScript, with 385,793 written lines. ### What framework does atproto use? atproto is built with Express, Expo, Vite, React, and TanStack. The proof: [in packages/pds/package.json](https://github.com/bluesky-social/atproto/blob/9f605e0fb117173dea8b5c1e9d6ad13bd6995c7f/packages/pds/package.json) ### What does atproto sign people in with? atproto signs people in with jose, com.nimbusds:nimbus-jose-jwt, and @hcaptcha/react-hcaptcha. ### Does atproto use AI? Yes. atproto uses AI through lande. ### What services does atproto use? atproto stores files in AWS S3 and uses @aws-sdk/lib-storage, Postgres, Redis, SQLite, lru-cache, react-native-mmkv, and @opentelemetry/instrumentation-ioredis. The proof: [packages/aws/src/s3.ts, line 2](https://github.com/bluesky-social/atproto/blob/9f605e0fb117173dea8b5c1e9d6ad13bd6995c7f/packages/aws/src/s3.ts#L2) ### Does atproto have tests? Yes. atproto has 556 test files and is tested with Jest, Vitest, and Puppeteer. ### Which repos have a stack like atproto's? The ones that share most of its stack: payloadcms/payload, ruvnet/ruflo, and calcom/cal.diy. ## What is your repo built with? Any public repo, with no account: https://seerepo.com/r/owner/repo/built, with the owner and name it has on GitHub.