JacobiusMakes

Jacob Galperin — Node.js / Open Source

Building open-source tooling for Linagora's collaboration stack (Matrix · JMAP · Cozy · LinShare) while contributing upstream to the libraries I use.

ParlayAPI: real-time sports odds for developers and AI agents

ParlayAPI is a real-time sports odds API I built and run: 30+ sportsbooks, 90+ sport keys, player props, arbitrage detection, prediction markets, and closing lines with continuous history from 2005. The free tier is 1,000 credits per month, no card required, and the keyless demo endpoint (GET https://parlay-api.com/v1/try/{sport}/odds) needs no account at all. Start with the docs, pricing, or the MCP page.

Everything below is open source and works with the free tier.

For agent builders

Repo	What it gives you
parlayapi-betting-agent-starter	The "how do I start" repo: live odds to no-vig fair lines, one marked hole for your model. One click in Colab or Codespaces, keyless
parlay-api-mcp	MCP server: live odds, props, and arbitrage as 22 tools in Claude, Cursor, or any MCP client. Hosted endpoint, no install: `POST https://parlay-api.com/mcp/http`
parlayapi-agent-tools	Ready made odds tools for LangChain, LlamaIndex, and raw OpenAI/Anthropic function calling

For data people

Repo	What it gives you
sports-odds-datasets	Free datasets of real sportsbook closing lines, exported from production. CC BY 4.0
parlayapi-notebooks	Jupyter notebooks: no-vig pricing, EV, line movement, closing line value. One click Open in Colab
betting-model-starter	Template for a betting model: fetch odds and props, devig, scan edges, backtest closing line value
parlayapiR	R client with devigging and Kelly sizing, keyless sandbox mode
awesome-sports-betting-data	Curated map of the whole space: odds APIs, historical datasets, tools, communities

For integrators

Repo	What it gives you
parlay-api-python	Python SDK: `pip install parlay-api`
parlay-api-js	JavaScript/TypeScript SDK, zero dependencies
parlayapi-collections	Ready-to-import collections for Bruno, Postman, Insomnia, and HTTPie
parlayapi-odds-action	GitHub Action that pulls odds into JSON or CSV on a cron
parlayapi-sheets	Live odds, line shopping, and devig as Google Sheets formulas
parlayapi-discord-bot	Self-hostable Discord bot: lines, moves, and a parlay checker
parlayapi-raycast	Raycast extension: best available lines and betting math from your launcher
parlayapi-obs-overlay	OBS best-line ticker for betting streamers, one HTML file, keyless
parlayapi-line-shopper	Shop the line from your terminal: every book's price per outcome
parlayapi-arb-scanner	CLI arbitrage scanner, zero setup against keyless sandbox endpoints
parlay-api-arb-starter	Cross-book arbitrage in under 150 lines of Python

Skeptics welcome: odds-api-benchmarks lets you rerun every published comparison number from your own machine, and parlayapi-data-bounty pays free credits when you catch us serving a wrong line.

Twake Workplace Ecosystem

A full ecosystem of tools built around Linagora's open-source collaboration platform - each project filling a real gap, built from scratch.

Project	What it does
twake-cli	Unified CLI for Twake — chat, mail, drive, share from your terminal. Matrix · JMAP · Cozy · LinShare
twake-automate	Workflow automation engine — event triggers, scheduled jobs, LUCIE AI actions
twake-search	Server-side unified search across Chat + Mail + Drive — SQLite FTS5, REST API
twake-rag	RAG service for Drive documents — LUCIE LLM · transformers.js · vector embeddings
twake-tui	Terminal dashboard — real-time chat/mail/drive in one view, built with ink
twake-mcp	MCP server — exposes Twake to any AI assistant (Claude, Cursor, etc.)
twake-notify	Email-to-chat bridge — JMAP inbox alerts posted to Matrix rooms
twake-linto-bridge	Voice transcription bridge — LinTO speech-to-text → Twake Chat threaded replies
twake-migrate	Migration tool — Slack → Matrix, Google Workspace → JMAP/Cozy
twake-dashboard	Web search UI — visual frontend for twake-search with demo mode, source filtering
twake-monitor	Health check + uptime monitor — probes 5 real Twake endpoints, Prometheus metrics, TLS cert expiry

Open Source Contributions

Linagora

PR	Repo	Description
#925	twake-drive-legacy	`fix(database)`: PostgreSQL auto-reconnect with exponential backoff
#924	twake-drive-legacy	`fix(postgres)`: empty SET clause crash in upsertOne
#923	twake-drive-legacy	`fix(i18n)`: missing Russian translations
#922	twake-drive-legacy	`fix(i18n)`: sidebar language mixup race condition on first load
#921	twake-drive-legacy	`refactor`: consolidate email templates with i18n
#920	twake-drive-legacy	`fix`: NaN date display in file browser
#919	twake-drive-legacy	`fix`: password visible as plaintext on shared link input
#78	jmap-client-ts	`fix`: upgrade axios + node-fetch to resolve 4 high-severity CVEs
#349	ToM-server	`fix`: graceful fallback when LDAP URI is missing — prevents server crash on startup
#722	twake-calendar-frontend	`fix`: type-safe window config replacing `(window as any)` globals

Hugging Face

PR	Repo	Description
#1609	transformers.js	`feat`: emit `progress_total` events from `PreTrainedModel.from_pretrained()` — aggregate download progress for multi-file models

ffmpeg.wasm

PR	Repo	Description
#938	ffmpeg.wasm	`fix`: AbortSignal actually cancels running WASM exec via `setTimeout(1)` — resolves #719
#936	ffmpeg.wasm	`feat`: restore Node.js support via `worker_threads` — mirrors browser API, resolves #897
#937	ffmpeg.wasm	`feat`: allow passing binary WASM data directly to `FFmpeg.load()` — no CDN required

Scaleway

PR	Repo	Description
#2860	scaleway-sdk-js	`feat`: async config loading + file permission security check

Mistral AI

PR	Repo	Description
#200	client-ts	`fix`: graceful handling of malformed JSON in structured output parsing

Stack

Node.js · TypeScript · Fastify · Commander.js · SQLite FTS5
Matrix (m.room.message) · JMAP (RFC 8621) · Cozy API (JSON:API) · OAuth2/PKCE/OIDC
ink (React for terminal) · transformers.js · ffmpeg.wasm · better-sqlite3

Based in Atlanta → moving to Paris. Open to R&D Node.js roles.

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