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Fettle

Monitors HTTP, TCP, DNS, SSL and cron heartbeat endpoints from several regions, opening incidents when every region agrees.

Free plan · From $9/moActively maintained

At a glanceswept Oct 22, 2026

not read yet

Use

For
Developers and their AI agents keeping deployed apps, APIs and cron jobs up.
Price
Free plan · From $9/mopricing page, read Oct 24, 2026
Activity
Actively maintainedrelease 5 weeks ago · site updated 4 days ago
Runs as
API
App Store
00 ratingsiPhone & iPad · updated Sep 22, 2026
Used for
  • get alerted when a site returns 5xx errors
  • check cron jobs for missed heartbeats
  • publish a public status page for users
read off fettle.sh on Oct 24, 2026
Worth knowingcomputed from what we read · each with its source
  • Has an MCP server (1 in the registry)public registry →
  • Publishes llms.txt, a file written for AI assistantsfettle.sh ↗
Pricingpricing page, read Oct 24, 2026

Free plan · From $9/mo

How a program reaches itfound, not claimed · read Oct 24, 2026

MCP server details →

This card as JSON, for your agent →

Each line is something a program found when it went looking: the registry entry, the server's own answer, a spec that parses. A missing line means we did not find it, not that it does not exist.

Not it? Say what you need

beta

Three tools from the Atlas for the job you describe, each with what fits and what does not.

From people who use itnot part of the reading

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Questions this page answers
  • What is Fettle?

    Monitors HTTP, TCP, DNS, SSL and cron heartbeat endpoints from several regions, opening incidents when every region agrees.

  • Who is Fettle for?

    Developers and their AI agents keeping deployed apps, APIs and cron jobs up.

  • How much does Fettle cost?

    Fettle has a free plan; paid plans start at $9/mo, per its pricing page on 2026-10-24.

  • Is Fettle free?

    Yes, Fettle has a free plan, per its pricing page on 2026-10-24.

  • Do people use Fettle?

    Little sign of use.

  • Is Fettle still maintained?

    Actively maintained: release 5 weeks ago · site updated 4 days ago.

  • Does Fettle have an iPhone app?

    Yes: “Fettle - Tool Inventory” on the App Store, rated 0 from 0 ratings; current version released 2026-09-22.

  • How do I cancel Fettle?

    In its own words (terms of service, 2026-10-24): “You can cancel at any time; your plan stays active until the end of the paid period.”

How we read a tool

No votes, no reviews, no vendor claims. Every week a crawler reads each tool's own site and a few public registries, and the words on the card are bands over what it read.

  • Use: visits to the site (estimated), installs from npm and PyPI, presence in Chrome's usage report.
  • Activity: the newest release on GitHub, npm or PyPI; the newest dated page on the site; open roles on a public jobs board.
  • Price: the vendor's own pricing page, read with the date. A figure is printed only when it is on that page.
  • The line and the use cases are written by us from the homepage, one tool at a time, and refused when they repeat the vendor's marketing.

How AI assistants read each site — the reading vendors ask us about — is on each tool's own visibility page.

How we read every tool → · By INITE Atlas Desk