LLM-Ready Components

Generate and scan 1D and 2D barcodes. Supports Code128, EAN-13, UPC-A, ITF, Code39, QR Code, and Data Matrix. Produces SVG/PNG output and decodes from image buffers.

WebRTC-based peer-to-peer video calling. Manage local/remote streams, signaling, and call lifecycle.

PDF generation from HTML templates or raw content. Creates invoices, reports, and documents with configurable page size, margins, and headers/footers.

Universal LLM completion client supporting OpenAI, Anthropic, and Ollama. Provides chat completions, streaming, conversation history, and automatic retries with exponential backoff.

Server-side session management with pluggable stores (memory, Redis, PostgreSQL). Handles session creation, rotation, expiry, and signed cookie generation. Framework-agnostic.

In-memory job queue with workers, retries, and dead-letter handling. No external dependencies.

Automatic OAuth 2.0 access token refresh and lifecycle management. Handles token expiry detection, background refresh, secure storage, and provider-specific quirks for Google, GitHub, Discord, Stripe, and custom providers.

In-memory vector store for embeddings with cosine similarity search. Supports OpenAI and Ollama embedding providers. Ideal for RAG pipelines and semantic search.

Persistent background job queue with retries, scheduling, and concurrency control. Built on BullMQ (Redis) or pg-boss (PostgreSQL). Supports delayed jobs, cron-scheduled jobs, priority queues, and dead letter queues.

Interact with the GitHub REST API. Create issues, post comments, trigger workflows, manage pull requests, and read repository data. Supports both personal access tokens and GitHub App authentication.

In-memory cache with TTL, LRU eviction, and namespace support. No external dependencies.

Discord bot framework with slash commands, embeds, and message handling. Uses the Discord REST API and Gateway for real-time events.

Circuit breaker pattern for fault-tolerant external service calls. Tracks failure rates, opens the circuit to fast-fail requests when a threshold is exceeded, and probes recovery with half-open state. Zero dependencies.

High-performance image transformation using Sharp. Resize, crop, convert formats, apply watermarks, strip metadata, and optimize for web. Supports JPEG, PNG, WebP, AVIF, GIF, and SVG inputs.

Multi-provider image generation supporting OpenAI DALL-E, Stability AI, and Replicate. Handles prompt-based generation, size options, and base64/URL output formats.

Passwordless authentication via email magic links. Generates signed tokens, sends links via email, and verifies them on callback. Zero-dependency token management with configurable TTL and single-use enforcement.

Resilient HTTP client with automatic retry, exponential backoff, timeout, and request/response interceptors. Built on the native fetch API. No dependencies.

TOTP-based two-factor authentication. Generate secrets, create QR URIs, and verify tokens (RFC 6238).

Telegram bot component using the Bot API. Send messages, photos, reply keyboards, and inline keyboards.

Real-time chat messaging via WebSocket. Supports rooms, typing indicators, message history, and user presence. Works in both browser and Node.js environments.

Generate and parse CSV files from data arrays. Supports custom delimiters, headers, and streaming.

Vector embedding storage and semantic search. Supports Pinecone, Qdrant, and pgvector. Index documents with embeddings and query by semantic similarity for RAG pipelines, recommendation engines, and duplicate detection.

Structured LLM tool use (function calling) for OpenAI and Anthropic. Define typed tools, run agentic loops, and receive validated structured results. Handles multi-turn tool execution automatically.

Force LLM responses to match a JSON schema. Wraps OpenAI and Anthropic with schema-validated generation, automatic retry on parse failure, and TypeScript type inference from the schema.

Post to Reddit using the Reddit API. Submit text or link posts and manage comments.

Web page scraping with CSS selector extraction, pagination support, and rate limiting. Fetches HTML content and extracts structured data using selectors.

Server-side CAPTCHA verification supporting Cloudflare Turnstile, Google reCAPTCHA, and hCaptcha. Validates tokens from client-side widgets.

Convert Markdown to sanitized HTML with syntax highlighting, GFM extensions (tables, strikethrough, task lists), and frontmatter extraction. Safe for user-generated content.

Secure password hashing with bcrypt or Argon2id. Includes strength validation, comparison timing-safe, and configurable cost parameters. Zero external dependencies for bcrypt (uses Node.js crypto).

Simplified Stripe Checkout integration. Creates checkout sessions, handles payment webhooks, and manages subscription lifecycle.

Extract text and structured data from PDFs, images, and scanned documents. Supports Tesseract (local), Google Vision, and Azure Document Intelligence. Handles multi-page PDFs, tables, and form fields.

In-memory rate limiting with token bucket and sliding window algorithms. Zero dependencies, automatic cleanup, and HTTP header generation.

QR code generation and decoding. Produces PNG/SVG/terminal output from any string. Decodes QR codes from image buffers. Zero native dependencies.

Send transactional emails via Resend, SendGrid, or raw SMTP. Supports HTML/text content, attachments, CC/BCC, reply-to, and batch sending.

In-process typed publish/subscribe event bus. Decouples components without external infrastructure. Supports wildcard patterns, async handlers, error isolation, and event history replay.

SMS sending via Twilio or Vonage APIs. Supports single and batch messages, delivery status tracking, and webhook-based delivery receipts.

Slack bot for sending messages, Block Kit layouts, file uploads, and slash command responses via the Slack Web API. Supports both Bot tokens and incoming webhooks.

Audio transcription using OpenAI Whisper or Deepgram APIs. Supports file upload, language detection, timestamps, and multiple output formats.

API key authentication middleware. Generate, validate, hash, and revoke API keys.

Parse, validate, and batch-import CSV files. Supports streaming for large files, schema validation with typed coercion, error row collection, and progress tracking. Works with file uploads, S3 streams, and local paths.

Connect to Ethereum wallets (MetaMask, WalletConnect) for Web3 dApps. Client-side only.

Server-side file upload to S3-compatible storage, Cloudflare R2, or local disk. Includes MIME validation, size limits, pre-signed URL generation, and AWS v4 signing.

Capture full-page and element screenshots using a headless Chromium browser. Supports URL capture, HTML content rendering, and CSS selector targeting. Produces PNG or JPEG buffers.

Capture audio from the user's microphone using the Web Audio API and getUserMedia. Provides a real-time audio stream suitable for speech recognition, voice chat, or recording.

Send push notifications via Firebase Cloud Messaging (FCM) or Apple Push Notification service (APNs).

Interact with EVM smart contracts via JSON-RPC. Read state, call functions, and send transactions.

OAuth 2.0 authentication flow supporting multiple providers (Google, GitHub, Discord). Handles token exchange, session management, and user profile retrieval.

Simple feature flag evaluation with per-user overrides, percentage rollouts, and environment-based defaults. No external service required — flags are defined in code or config files.

Resize, crop, and transform images using raw pixel manipulation. No external dependencies.

Create, read, and extract ZIP archives. Supports streaming creation for large archives, per-file compression levels, and in-memory operations. No native dependencies — pure JavaScript implementation.

In-process cron scheduler for recurring tasks. Supports cron expressions, interval-based scheduling, timezone-aware execution, and graceful shutdown.

Post tweets and threads via the Twitter/X API v2. Supports text, media attachments, and reading timeline data with OAuth 2.0 authentication.

Text-to-speech synthesis using OpenAI TTS or ElevenLabs. Produces audio from text with configurable voice, speed, and output format.

Build conversational chatbot flows with nodes, conditions, and actions. Supports branching dialogues, context variables, fallback handling, and flow completion tracking.

Threaded comment system with moderation, reactions, and pagination. Supports nested replies, content moderation actions, and reaction tracking with an in-memory store.

Route prompts to different AI models or agents based on intent classification. Supports static rule-based routing, LLM-powered intent detection, and fallback chains for reliable multi-agent orchestration.

Look up geographic data from IP addresses using the free ip-api.com service. Get country, city, coordinates, timezone, ISP, and organization info for single or bulk IP lookups.

Track user events and page views for analytics. Buffers events in memory and flushes them in batches to a configurable HTTP endpoint. Zero dependencies — uses raw fetch.

Track and bill usage-based metrics. Record usage events against named meters, query usage summaries over time periods, and trigger threshold alerts for overage billing.

Process full and partial refunds via Stripe. Create refunds against payment intents or charges, check refund status, and react to refund lifecycle events.

WebSocket server with room-based messaging, client management, and broadcasting. Built on the ws library for Node.js.

Parse, generate, and watch RSS 2.0 and Atom feeds. Supports polling for new items, feed generation from structured data, and event-driven notifications when new content appears.

Finite state machine with guards, transition actions, and history tracking. Define states, transitions, and conditional logic for complex stateful workflows.

Manage and render prompt templates with variable interpolation, conditional sections, and few-shot example injection. Supports template registration, validation, and composable prompt construction for LLM workflows.

Encrypt and decrypt data with AES-256-GCM authenticated encryption. Generate cryptographic keys, compute secure hashes (SHA-256/384/512), and handle key derivation with PBKDF2.

Generate PDF invoices from structured data. Build invoices with line items, customer info, tax calculations, and export as PDF buffers or structured JSON.

Mix, trim, and concatenate audio tracks using FFmpeg subprocess. Supports volume adjustment, format conversion, and metadata extraction for server-side audio processing.

Verify email addresses by checking syntax, MX record existence, and disposable email provider detection. Supports single and bulk verification with no external API dependencies.

Run SQL database migrations with up/down support, status tracking, and migration file generation. Connects via raw TCP to PostgreSQL or via HTTP to compatible APIs.

Parse raw email (MIME format) into structured data. Extract headers, body (HTML and text), attachments, and metadata from RFC 2822 / MIME messages with no external dependencies.

Fan-out notifications to multiple channels including email (SMTP/SendGrid), SMS (Twilio), push (FCM), and Slack webhooks. Register channels dynamically and track delivery status.

Transform JSON data using JSONPath expressions, field mapping rules, filtering, flattening, and merging. Supports composable transformation pipelines for reshaping data between APIs, databases, and LLM contexts.

Build and analyze conversion funnels. Define ordered steps, record user progression, and generate reports with conversion rates and dropoff analysis. In-memory, zero dependencies.

Classify text into categories using LLM-powered classification or rule-based approaches. Supports single and batch classification, custom category definitions with descriptions, and a trainable keyword-based fallback for offline use.

Server-Sent Events (SSE) streaming server. Create named streams, push typed events, and manage client connections with automatic reconnection support.

Send WhatsApp messages via the Meta Cloud API. Supports text, template, and media messages with delivery and read receipt tracking.

Monitor URL uptime with configurable check intervals, latency tracking, and status change alerts. Supports multiple targets, pause/resume, and downtime history. Zero dependencies — uses raw fetch.

Create and verify JWT tokens using HMAC-SHA256/384/512 with no external dependencies. Sign tokens with custom claims and expiration, verify signatures, decode without verification, and refresh expiring tokens.

Retry failed operations with configurable backoff strategies including exponential, linear, and jitter. Tracks attempt history and provides detailed statistics on retry behaviour.

Key-value store with TTL support. Operates in-memory by default with optional Redis backend via raw RESP protocol. Supports expiration callbacks and namespace isolation.

Structured logging with multiple transports (console, HTTP, custom). Supports log levels, JSON formatting, context enrichment, and pluggable transport system. Zero dependencies.

Render email templates with variable interpolation using Handlebars-style syntax. Register reusable templates, render to HTML and plain text with data binding, conditionals, and loops.

Mint NFTs on EVM-compatible chains via raw JSON-RPC. Supports single and batch minting, token URI retrieval, and approval management.

Swap ERC-20 tokens via Uniswap-style DEX routers using raw JSON-RPC. Supports quoting, executing swaps, and balance queries on EVM chains.

Upload, download, and manage files on S3-compatible storage (AWS S3, MinIO, R2, DigitalOcean Spaces) using raw fetch with AWS Signature V4 signing.

Transcode video files between formats using FFmpeg subprocess. Supports format conversion, resolution scaling, codec selection, thumbnail extraction, and progress reporting.

Role-Based Access Control with hierarchical roles, fine-grained permissions, and wildcard matching. Supports role inheritance and permission auditing for server-side authorization.

Validate LLM inputs and outputs against configurable safety rules including PII detection, content filtering, prompt injection detection, and length limits. Provides a rule engine for building custom validation pipelines.

Capture and report errors to external services (Sentry-style). Supports exceptions, messages, context enrichment, and breadcrumb trails. Uses raw fetch to a configurable endpoint — zero dependencies.

Define and execute multi-step workflows with branching, parallel execution, and error handling. Supports conditional logic, retries, and workflow persistence for complex orchestration scenarios.

Segment users based on attributes and behavioral rules. Define segments with filter expressions, evaluate users against them, and list matching segments. In-memory rule engine, zero dependencies.

Execute GraphQL queries and mutations with automatic batching, response caching, and subscription support via WebSocket. Uses raw fetch for HTTP transport and native WebSocket for subscriptions.

Validate data against JSON Schema definitions or custom rule sets. Supports schema registration, type coercion, detailed error reporting, and composable validation pipelines for API inputs, form data, and LLM-generated structured output.

Health check endpoint with dependency monitoring. Register dependencies (databases, APIs, caches), run periodic checks, and expose a unified health report. Zero dependencies.

Run A/B tests with deterministic variant assignment and conversion tracking. Supports multi-variant experiments, traffic allocation, and statistical significance calculation. Zero dependencies.

SAML 2.0 SSO authentication for Service Provider-initiated flows. Generates login URLs, validates SAML responses, and extracts user attributes. Uses node:crypto for XML signing.

End-to-end Retrieval-Augmented Generation pipeline. Ingests documents, chunks and embeds them into an in-memory vector index, then answers queries by retrieving relevant context and calling an LLM completion endpoint.

Manage recurring subscriptions with Stripe Billing. Create, update, cancel subscriptions, and handle lifecycle events like payment failures and renewals.