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LinkMagnet

Everythingyour links need,one API.

One tag for branded cards on X, LinkedIn, Slack and iMessage. One API for the rest, built for your coding agent.

Free, no account. Shows how the page previews on X, LinkedIn, Slack and iMessage, and which tags fail.

Or ask your agent

Audit the Open Graph tags on my site with LinkMagnet and tell me what to fix.
MCP server: https://linkmag.net/mcp

What happens to one link

  1. A real link, as it previews today.

    404found.love is a real site. Its About page shares its own photo, 1077 × 606, and platforms crop it to 1.91:1.

  2. The audit reads every tag.

    Required tags and alt text pass. The image ratio doesn't.

  3. The card snaps into place.

    Title, logo and photo, drawn at 1200 × 630 for this page, on your domain.

  4. Same card, everywhere it's shared.

    X, LinkedIn, Slack and iMessage all get the size they expect.

404found.loveAbout | 404 Love Found
The page's own photo: Dario with Sammie in a vanThe LinkMagnet card for the 404 Love Found About page

https://404found.love/about

  • passRequired Open Graph tags: 4 of 4
  • passog:image:alt present
  • failImage 1077 × 606 is 1.78:1; platforms expect 1.91:1

Look right. Pass the checks. Count the clicks.

Cards

Point og:image at your card URL. Every page on a verified domain gets a branded card.

The LinkMagnet card for the 404 Love Found home page

render_preview · GET /v1/og/{siteId}

Checks

Tags, alt text and image ratio against what each platform requires.

  • og:title ✓
  • og:image:alt ✓
  • image 1.78:1 ✗

audit_site · GET /v1/validate

Links and clicks

Short links to your own pages. People are counted; preview crawlers are not.

linkmag.net/s/JYRHDwSg
→ 404found.love/about

Example chart of clicks per day

create_link · get_stats

One prompt. Your agent does the rest.

claude · ~/404found.love
  1. you: Give this site branded link previews with LinkMagnet. MCP server: https://linkmag.net/mcp
  2. agent: request_api_key Approve the key at the link I opened in your browser.
  3. you: Approved.
  4. agent: claim_api_key, create_site, register_domain Add this TXT record at your DNS host: linkmagnet-verify=…
  5. agent: verify_domain 404found.love verified.
  6. agent: get_install_snippet Added the card tag to app/layout.tsx.
  7. agent: audit_site Required tags 4/4, image 1200 × 630. Done.

By hand:Next.jsAstroHugoJekyllWordPressWebflowHTML

Example

Real cards from a real site.

404found.love uses LinkMagnet. These are the cards it draws for the About page and the home page, from each page’s own title and photo.

LinkMagnet card for the About page
404found.love/about
LinkMagnet card for the home page
404found.love

Free to start. Pay per site when it grows.

Free

$0

  • 1 verified domain
  • Unlimited pages and views
  • Default templates, card API, validator
  • Short links with click stats
  • Small “cards by linkmag.net” badge
Start free

Pro

$12/month

  • 3 verified domains
  • Unlimited pages and views
  • Badge optional
  • AI captions instead of page titles
  • Cache purge
Upgrade on your site page

Business

$49/month

  • 15 verified domains
  • Unlimited pages and views
  • Everything in Pro
  • Your own short-link domain: go.example.com/…
Upgrade on your site page
Plan details →