Castor — AI Link building agent — autonomous Link Building for SEO agencies
Your autonomous AI link building specialist — backlink audits, outreach prospects, and campaign tracking on autopilot.
Castor is the AI agent that handles the full link intelligence cycle. He audits your client's backlink profile, flags toxic or lost links, identifies high-value outreach opportunities from competitor gap analysis, and tracks the progress of active campaigns — giving your team a ranked list of prospects and a live view of what's been secured without the spreadsheet grind.
Autonomous function
What Castor does on its own.
Autonomously audits backlink profiles for quality and risk, surfaces outreach opportunities from competitor link gap analysis, monitors existing link placements for live status, and compiles campaign performance into client-ready reports.
Workspace fit
Castor ships with the Link Building pack. He integrates with Link Analytics to track click performance on secured links and passes placement data to Helios for inclusion in client reports — closing the loop between outreach effort and measurable traffic.
What it delivers
Your outputs, every cycle.
Full backlink profile audits with risk scoring
Competitor link gap analysis and prospect lists
Lost link detection and reclamation recommendations
Active campaign tracking and placement verification
Domain authority and referring domain trend reports
One-click export of prospect lists and campaign data
Frequently asked questions
Castor AI Agent — FAQ
Everything you need to know about Castor before you start your free trial.
Castor is an autonomous AI agent that handles the full link intelligence cycle. He audits your client's backlink profile, flags toxic or lost links, identifies high-value outreach opportunities through competitor gap analysis, and tracks the live status of active link campaigns — giving your team ranked prospect lists and a running view of what has been secured.
Castor runs the audit and prospect discovery cycles autonomously on a set schedule. He surfaces a prioritized prospect list from competitor gap analysis without you requesting each run. Active campaign tracking (checking live status of secured links) also runs automatically. Outreach itself — sending emails — is not automated by Castor; it is a human-executed step he supports with data and templates.
Full backlink profile audits with risk scoring, competitor link gap analysis and prospect lists, lost link detection and reclamation recommendations, active campaign tracking and placement verification, domain authority and referring domain trend reports, and one-click export of prospect lists and campaign data.
Castor draws on the Link Analytics module, which integrates with the backlink data source connected in your workspace (currently in active development). Competitor backlink gap analysis pulls from the same source. Castor does not crawl the web directly — he queries structured data via the platform's connected data providers.
Castor ships with the Link Building pack. He is included at no extra charge as the specialist AI agent for that job.
Audit runs and prospect list generation cost Staters from your monthly allowance. The exact cost per run is shown in the Credits view before Castor executes. Viewing existing data (already audited profiles) is free; new data pulls and AI-generated prospect scoring consume Staters.
Castor evaluates each backlink in the profile against signals like domain authority, anchor text distribution, link velocity, spam score, and niche relevance — and assigns a risk level (low, medium, high). High-risk links are flagged for potential disavow consideration. The scoring model is based on established SEO principles, not a proprietary black box.
Yes. Castor monitors previously secured links for live status and alerts you when a link goes dead, redirects to a different page, or changes in a way that reduces its value. Lost link alerts appear in the campaign dashboard and in Watcher's weekly brief.
Yes. Castor passes placement data to Helios, which includes backlink acquisition highlights in client Daedalus reports. The loop closes between outreach effort and measurable performance in the client-facing report.
The backlink audit module and prospect discovery are in active development. The core Link Analytics integration is coming soon — some features will show a "coming soon" badge until the full data pipeline is live. Campaign tracking scaffolding is available for manual use now.
Castor provides outreach templates and prospect context (why this domain is a strong target, what page to pitch for a link) to make your outreach emails more relevant. He does not send emails autonomously — outreach messaging requires human review and authorization before it goes out.
Castor tracks link acquisition. To connect that to ranking movement, his data feeds into the SERP tracker and Helios's analytics view, where you can correlate new link placements with rank changes over time.
The full team
More agents in the ZeusSEO roster.
Thalia
Your autonomous AI local SEO specialist — GBP management, local campaigns, and rank monitoring on autopilot.
Talos
Your autonomous AI technical SEO specialist — site crawls, issue detection, and fix preparation on autopilot.
Calliope
Your autonomous AI content strategist — briefs, calendars, and first drafts delivered without prompting.