Rack middleware + OTel SDK config that sends traces, metrics, and logs to TraceMap via OTLP/HTTP. Auto-instruments Rails, Sinatra, Sidekiq, ActiveRecord, Redis, and Faraday.

Learn your app's normal behavior, then block off-baseline requests (auth bypass, path traversal, scanners, unusual methods) in enforce mode. Rack/Rails/Sinatra middleware plus an OWASP-LLM prompt-injection guard backed by an embedded ML model (byte-identical across all Nemesis Shield SDKs). Priva...

Rack middleware + Rails integration for Shugoi. Blocks bots, scrapers and headless clients with a proof-of-work challenge, environment signals and split-render, mirroring the Node.js module.

CSP Maker lets you define a Content Security Policy using a DSL and encode it into a header string. It has support for nonces, and includes a Rack middleware that automates generating and assigning the header. The code was extracted from ActionDispatch::ContentSecurityPolicy in ...

Detects and sanitizes Personally Identifiable Information (emails, phone numbers, credit cards, SSNs, IP addresses, IBANs, UK NINOs, Canadian SINs, Indian PAN & Aadhaar) and API secrets / Database connection strings in strings, hashes, logs, Faraday HTTP requests, and Rack. Features a bidirection...

Verify that a request really came from ZeroClick, check that the buyer can pay before you do the work, return the refusal responses ZeroClick expects, and report what was used. Ships Rack middleware, so it works in Rails, Sinatra, Hanami and Roda alike.

Redact emails, phone numbers, credit cards, SSNs, IBANs, IPs, JWTs, API keys, private keys and Indian IDs (Aadhaar/PAN/UPI) from any string in a single pass through a Rust engine. Checksum-validated (Luhn, Verhoeff, mod-97) so random numbers are not mistaken for card numbers, and ReDoS-immune by ...

A Ruby gem with a C extension for high-performance scanning and redaction of sensitive data — API keys, tokens, credentials, IBANs, national IDs, emails, phone numbers, and PII from 15+ countries. Optional Logger formatter, Rails filter_parameters adapter, and Rack middleware. Designed to sanitiz...

Genius Blocker is a piece of Rack Middleware designed to prevent unwanted annotations by News Genius. The middleware injects a small bit of JavaScript code into the <head></head> of a website in order to force a redirect to the original website whenever anyone attempts to prepend geni...

Discovery, PKCE authorization, token exchange, and token verification against a masks issuer, with Rack middleware for a resource server and a Rails engine that mounts the consumer half of the code flow. The auth server itself is the masks-server gem.

A rack app for monitoring application health that can be attached to your rails application

An extremely too-simple web framework based on raw Rack and some helper classes. Scratches a very particular itch--one you likely don't have.

Monk produces Rack 3 apps that are also Ractor.shareable?, so they can be served in parallel across Ractor worker pools without silently losing that safety property.

A Rack API (through Grape) for Heroku add-on providers.

Rack middleware for Rails that automatically converts request param keys to snake_case and response keys to camelCase helping you maintain a consistent code style in your Ruby and JavaScript code

A dependency-free Ruby gem that catches and reports exceptions to an Errbit server over its error-ingestion API. No Rails, no Rack required.

Synchronous Cekat event client with Rack middleware and a Rails integration that attach the browser visitor ID of the current request automatically.

Correlated Rack request and ActiveRecord evidence for Crumbtrail

Feature flags evaluated locally against e-volv Launch, plus batched log shipping, trace context and error capture for e-volv Observer. Pure Ruby + stdlib; Rack middleware, Rails.logger bridge, ActiveJob and Sidekiq carriers, Net::HTTP and Faraday injection.

Framework-neutral Ruby host for the canonical FlexDoc OpenAPI renderer with thin Rack and Rails integrations.