Calibre for Agencies
Performance monitoring for every client site
Track speed and Core Web Vitals for every site you manage, in one account. Give each client a Team, send monthly reports automatically, and catch regressions before launch.
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Trusted by teams at
Built for multi-client work
Unlimited Sites and URLs on every plan
A Team per client, with read-only access for the client
Monthly reports sent to every client automatically
Synthetic, RUM and CrUX data in one place
Alerts and pull request checks for every client
Calibre MCP for client reports from your coding agent
“Now we can provide our clients with solutions, instead of setting up our own tooling.”
Win work
Rank clients against their industry
Bring real numbers to the pitch, then show clients how far they’ve climbed.
A full performance picture from one URL
Add a prospect’s site and Calibre finds its most important pages, pulls their Google CrUX data and runs Lighthouse tests. Nothing to install.
Learn how adding a Site works →A leaderboard in every client workspace
Add a client’s competitors to their Team and Calibre ranks them all on real-user data. Show where they stand before you start, and as your work ships.
Learn about Teams →Organise
A workspace for every client
Keep each client’s Sites, people and reports separate, all in one account.
A Team for each client
Each Team holds one client’s Sites, competitors, leaderboards and monthly reports. When an account changes hands, move a Site to another Team without losing its history.
Learn about Teams →Read-only access for clients
Invite clients to their Team as Viewers. They see their own comparisons, metrics and email reports, but cannot change your monitoring setup.
Learn about roles →Report
Prove the results of your work
Show clients what changed every month, without building a report.
Monthly Team Insights for every client
Every client Team member gets a monthly summary rating each Site as Regressed, Improved or Stable, with its Core Web Vitals assessment and changed metrics.
Learn about Team Insights →Before and after every release
Deploy markers show when your work shipped. Compare each deployment with the one before, for real visitors and in synthetic tests.
Learn about deploy tracking →Ask your performance data anything
Connect your coding agent to Calibre. Ask about any page and it finds the slow element, script or URL in your Synthetic, RUM and CrUX data, then writes the fix.
- Claude Code
- Cursor
- Codex
- Copilot
“The Calibre MCP lets me bring Calibre and WP Umbrella together in one place. I use it to keep records of the work I do, track what needs doing next, and put together short reports for clients showing what the issue was, the before and after numbers, and how it was fixed.”
Protect
Catch regressions before your client does
Set a standard for each client. Calibre tells you when a release breaks it.
Performance budgets per client
Set budgets on the metrics each client cares about. Send alerts by email, to each client’s Slack channel, or anywhere with webhooks.
Learn about budgets →Pull request reviews
Calibre tests each pull request’s preview deployment, from Vercel, Netlify, Render or any public URL, so you see a change’s impact before the client’s visitors do.
Learn about pull request reviews →“Guaranteeing our clients good performance and delivering best practices has never been easier for us.”
Questions from agencies
Can I monitor all of my clients’ sites from one Calibre account?
Yes. Every plan includes unlimited Sites and URLs. The Team plan and above add unlimited Teams, so each client gets a Team with its own Sites, members and reports.
Can clients see their own data without seeing other clients?
Yes. People only see the Teams they belong to, so add each client to their own Team only. As Viewers, they can view metrics and reports, run tests and receive email reports, but cannot change monitoring settings.
How does Calibre report performance to clients?
Each month, every member of a Team gets a Team Insights email. It rates each Site as Regressed, Improved or Stable, with the Core Web Vitals assessment, significant metric changes, CrUX data and synthetic Web Vitals. Members can also opt in to weekly or monthly Insights reports for each Site.
Can I check a prospective client’s site before they sign?
Yes. Add the site’s URL and Calibre finds its key pages, matches them against Google’s Chrome User Experience Report (CrUX) and runs Lighthouse tests, with nothing installed on their site. CrUX Core Web Vitals for each page, by country and device, usually arrive well within 15 minutes. Lighthouse audits show what is slowing it down.
Can I show a client how they compare with their competitors?
Yes. Add their competitors’ sites to the client’s Team. Calibre ranks every site in the Team on Google CrUX data, and the client can see the comparison with Viewer access.
How do I stop a release from slowing down a client site?
Set performance budgets for each client and get alerts by email, Slack or webhook when one is at risk or exceeded. Pull request reviews test each preview deployment (from Vercel, Netlify, Render or any public URL) and show the impact before a change ships.
Can I use AI agents to report on client sites?
Yes. Calibre MCP connects coding agents such as Claude Code, Cursor, Codex and Copilot to your Synthetic, RUM and CrUX data. Ask about any client page and it finds what is slow, then helps you write up the before and after numbers for the client.
How is Calibre priced for agencies?
Plans are not priced per Site. Usage is measured in synthetic tests (each URL and Test Profile combination, multiplied by the test schedule) and real user sessions. Client Viewers use a seat, and the Team plan includes 10, with more as add-ons.
Need help to dial in your new speed system?
Our friendly, knowledgeable team will help you establish a system that works efficiently or answer any questions. We’re here to support you in your web performance journey. Contact support.
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