Anubis

anubis.techaro.lol · checked 13 Nov 2026

#3 · Bot Detection

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How it plugs in

—Public API

NoOpen source

YesFree tier

Signal on Bot Detection6.0#3 of 14

Anubis is open-source web bot protection that uses proof-of-work challenges to block automated abuse while allowing real users through.

Pricing

AnubisSelf-hosted · Open sourceFree

As techaro.lol lists them, checked 13 Nov 2026.

Near it

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Runs on

Web
Windows
Mac
Linux
iOS
Android

Facts

Website: anubis.techaro.lol
Price: Free tier
Free trial: No
Container image: Anubis is distributed as a container image through the GitHub Container Registry.
Deployment: Anubis is self-hosted and designed to sit between a reverse proxy and the service being protected.
Installation environments: The documentation lists Apache, Caddy, Docker Compose, Kubernetes, Nginx, Traefik, and HAProxy deployment environments.
Limitations: Techaro advises against using Anubis for network-level volumetric DDoS attacks or endpoints whose clients cannot run JavaScript.
Metrics: Anubis includes a separate Prometheus-style metrics server with health-check and debug routes.
Policy controls: A YAML or JSON policy file lets administrators allow, deny, or challenge requests based on rules including path, user agent, and headers.
Proof of work: Its proof-of-work difficulty is customizable and defaults to five leading zeroes.
Proxy integrations: Documented integrations include Nginx and Caddy subrequest authentication.
Scraper and bot impact: The project warns that its heavy-handed blocking can affect smaller scrapers and legitimate bots, and offers bot policies for allowlisting.
Security configuration note: Anubis generates a new Ed25519 keypair on each start; sharing the keypair between instances is not currently supported according to the documentation.
Security mechanism: After a challenge, Anubis sets a cookie containing a signed JWT; JWTs are signed with an Ed25519 keypair.
Support: The project README directs users to open an issue for support and offers Patron Discord live chat.

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