How We Compare

Agent Stack Data is a data publication, not a test lab. This page states exactly where our numbers come from, how they are checked, and what we do not claim — so any reader (or any machine) can judge the work.

Where the numbers come from

Every price, free-tier limit, rate limit, and API or MCP support claim on this site is taken from the vendor's own published pricing pages and documentation. The full dataset is published openly at /data/tools.json, and every tool record carries the date it was last verified. When pricing is sales-only or a limit is not published, the dataset says so instead of guessing.

How the data stays current

The dataset is re-checked weekly against vendor pages. Anything that cannot be verified first-hand is flagged or removed — never guessed, and never carried forward silently. Vendors change pricing often; the vendor's pricing page is the real one.

Calculated, not measured

We run no hands-on product tests and publish no benchmark scores or star ratings. Where a guide shows per-operation or per-task costs, that is arithmetic on the vendor's published prices — a calculation, labeled as one, not a measurement.

How money works here

Exactly one tool link on this site is currently a tracked affiliate link: Make, labeled "Featured partner" wherever it appears — its homepage spotlight is a commercial placement. Every other vendor link is a plain link to the vendor's official site and earns nothing. The hardware page's links are Amazon Associates links; its prices are manufacturers' published list prices, labeled with source and checked date. Tools are listed and ordered by category and published data, not by commission; see our affiliate disclosure.

Corrections

If a number here is wrong, we want to know: contact us and it will be checked against the vendor's page and fixed or flagged in the next weekly pass. Dataset last verified: 2026-11-09.