The only open source internal linking tool

An internal linking tool sees everything: your full content, your site structure, your traffic patterns if you connect Search Console, and if it injects links, it runs JavaScript on every page you serve. That is a lot of trust to place in a black box. With Linkagent, none of it is a black box. The crawler, the TF-IDF topic modeling, the opportunity scoring, the link-budget rules, and the embed script are all in the open repository. When we say anchors are never invented, you don't have to take our word for it. The substring validation is right there in the source.

Self-hosting is first-class, not an afterthought. The platform is a Next.js app backed by Postgres; point it at your database, optionally add a Claude API key for the AI review pass (everything works without one), and schedule crawls with your own cron. Agencies run one instance for all client sites. Teams with strict data policies keep every byte (content, link graph, decisions) inside their own network. The embed script is MIT-licensed, so shipping it to your visitors carries no license questions at all; the platform is AGPL-3.0, which keeps improvements open for everyone.

And open source compounds differently: the scoring logic improves in public, issues are argued in the open, and if the project ever stopped, your instance keeps running. Your internal linking agent cannot be discontinued out from under you. Even if you start on a hosted plan and later cancel, you can migrate to a self-hosted instance and keep serving the same links, an exit that closed alternatives simply do not have: there, canceling means your injected links vanish with your account.