Does A2A Registry accept AI tools?

Only some. It lists AI products, with a rule: A2A protocol agents only.

AI directories

A2A Registry

A2A protocol agents only

Register of A2A agents that checks each one for reachability and uptime; the home page counts 387 agents. An agent is added by pasting its agent card URL.

A2A Registry is an AI directory at a2aregistry.org. It lists AI products, with a rule: A2A protocol agents only. The price is not stated on its pages. The link you get is dofollow: the Launch endpoint and agent card links on a live listing carry no nofollow (checked on the Flux page). Review: an agent is registered once its card is reachable and valid, after the submitter reviews the evidence shown; anyone can flag a listing. Terms read on a2aregistry.org on 3 October 2026.

Rate card

Price: Not stated
Link you get: Dofollow: the Launch endpoint and agent card links on a live listing carry no nofollow (checked on the Flux page)
Review: An agent is registered once its card is reachable and valid, after the submitter reviews the evidence shown; anyone can flag a listing
Their rule: A2A protocol agents only
Lists: AI agents and automation tools only
Where they say so: a2aregistry.org/submit ↗
Reach: SmallSmall reach: outside the Tranco top million by traffic; #7,176,772 of about 120 million domains by links in Common Crawl's web graph.
Checked: 3 October 2026, on its own pages

Quick answers

Does A2A Registry accept AI tools?: Only some. It lists AI products, with a rule: A2A protocol agents only.
How much does a listing on A2A Registry cost?: The price is not stated on its pages.
What link does A2A Registry give?: The link you get is dofollow: the Launch endpoint and agent card links on a live listing carry no nofollow (checked on the Flux page).

Who is listed on A2A Registry

Our nightly read of a2aregistry.org found 2 apps we recognise from other places, among them a2a-protocol.org, modal.com. As of 8 Oct 2026. Your tracker checks whether yours is there.

How to submit to A2A Registry

1. Prepare the kit. A one-line pitch, a description, a square logo and screenshots, and check that your product fits their rule: a2a protocol agents only. The listing guide lists what forms ask for; the tracker builds the kit from your website.
2. Open the form. Their submit page opens from the button above once you are signed in; signing in costs nothing.
3. Wait for the review. An agent is registered once its card is reachable and valid, after the submitter reviews the evidence shown; anyone can flag a listing. Log the submission in your tracker; it marks the listing when it appears.

Listing tracker

Know when A2A Registry lists you.

Add your app once; we read a2aregistry.org every week and mark the listing when it appears, every night on Pro. Last read 8 Oct 2026.

Track A2A Registry

Run A2A Registry? A badge for your site

Tells founders you take AI tools before they read your rules, and links to your terms here. Paste it in your site's footer, so it is on your home page, where our nightly check looks:

<a href="https://listaify.com/places/a2a-registry"><img src="https://listaify.com/badge/a2a-registry.png" alt="A2A protocol agents only, verified on Listaify" width="250" height="56"></a>

With the badge in your footer, this page becomes a Partner page: your logo, screenshots and an offer for founders, plus your numbers and the apps your peers list and you do not. Manage this page.

Price changed or something is wrong? Report a change. Run A2A Registry? Manage this page.