Rindler

Most business software assumes an API exists. A great deal of day-to-day operational work happens on websites that have none: supplier portals, court filing systems, insurance payer sites, applicant tracking systems, bank and lender dashboards. Rindler, a Y Combinator-backed company, exists to automate exactly that layer.

One operation

Rindler deliberately exposes a single operation rather than a builder or a flowchart. You describe the task in a sentence, Rindler works out which site the request belongs to, drives a browser on its own infrastructure, and hands back what the site said. There is nothing to open or close and no supported-sites list to consult first — any website your team already has access to can take a request.

How it avoids the usual fragility

The common approach to web automation does the discovery work live on every run: fetch the page, read the DOM or accessibility tree, guess selectors, click, re-read and recover. That repeats on each execution and breaks whenever a layout shifts. Rindler instead learns a site once and maintains that mapping centrally, so when a portal changes its interface the fix is deployed for everyone rather than debugged by each customer. The company publishes benchmarks claiming roughly 4x faster task completion and 3x lower cost than open-source browser-agent alternatives.

Control and visibility

Logins are stored encrypted and scoped to the individual site they belong to. Every step and screen of a run is captured so an operator can see what actually happened. Permissions are set per action and per site with three settings — allow, ask first, or never — so consequential steps such as submitting a form or making a payment can be gated. Rindler also documents an MCP access channel, with docs covering MCP setup and browser MCP for programmatic use from agents.

Pricing

Billing is per finished task rather than per step or per minute: one run equals one completed task equals one dollar. Starter is $100 a month for 100 runs against a single login-gated site, set up with the Rindler team, and begins with a 7-day free trial with nothing charged until day 8. Teams is $1,000 a month for 1,000 runs across ten login-gated sites and adds saved tasks on a schedule plus a shared team workspace. Enterprise is custom-priced for portal work spread across many sites, with extra capacity, dedicated onboarding and an annual agreement billed monthly.

Who it is for

Rindler targets procurement and accounts payable, government and courts, healthcare and insurance, HR and recruiting, banking and lending, and commerce, travel and property teams — anywhere a person currently logs into a portal by hand and repeats the same handful of actions.