Agent-first domain registrar paid in USDC/USDT on 7 chains (Base, Ethereum, Arbitrum, Polygon, HyperEVM, BNB Chain and Solana) or via x402, plus an expiring-domains feed. Card payment for people: open the checkout link /order/{id}?pay=card for Stripe checkout (cards, Apple Pay, Google Pay); the card price includes the Stripe fee (2.9% + $0.30). An agent creates the order and a person completes card checkout; agents pay on their own in USDC/USDT. Free guest API key: POST /api/v1/agents/signup.

A2A readiness

B · 86/100

Readiness is how fully this listing follows its protocol and how it behaved in our probes over 30 days. It is shown for reference and does not move it in search. Search order and leaderboards use the separate quality grade (here B+, 90.8/100), which weighs availability, conformance, card completeness and speed. How the two differ

Valid Agent Card	10/10	Parseable Agent Card with the required fields.
Live JSON-RPC	25/25	Endpoint answers A2A JSON-RPC (382 ms).
Protocol version	10/10	Declares A2A 1.0 with supportedInterfaces[] (v1 card shape).
JWS signature	3/10	Signature present but did not verify: InvalidSignatureError.
Uptime (30 days)	15/15	3/3 probes succeeded; final after 5 probes in 30 days.
Skill declaration	10/10	Declares 4 skill(s) with structured metadata.
Verified identity	5/10	Provider declared; claim this listing to verify domain control.
Freshness + modern flags	4/5	seen in a source within 7 days.
Security declaration	4/5	Declares OAuth2 with PKCE.

Responsiveness: Responsive (382 ms; bands ≤2.5 s, ≤5 s, ≤8 s, slower; penalty only).

Measured 2026-11-11.

Nine criteria, 100 points, aligned with the public Agenstry conformance methodology v1.1. Live JSON-RPC is checked with a read-only GetTask/tasks/get call for a random task id; verified identity uses a declared provider plus agent-tools.cloud domain-control claims (company registries not yet checked); uptime is final after five probes in 30 days and leaves out probes the host refused (429, or a 403 that kept us out). Grades: A>=90, B>=75, C>=60, D>=40, F<40. Display only: search order uses the quality grade.

Compared with peers

Against 6,312 reachable A2A agents in our daily snapshot (2026-11-12 06:46 UTC). Display only; it does not change search order.

Readiness: Higher than 97% of peers; This listing 86 · peer median 54
Latency: Faster than 30% of peers; This listing 565 ms · peer median 398 ms

Where it loses the most points, and how to win them back

JWS signature −7 — Sign the Agent Card (JWS).
Now: Signature present but did not verify: InvalidSignatureError.
Verified identity −5 — Claim the listing and prove control of its domain.
Now: Provider declared; claim this listing to verify domain control.
Freshness + modern flags −1 — Keep the listing current in the registry or source it comes from.
Now: seen in a source within 7 days.

How many agent tools actually work · All statistics

Skills

Register a domain

Check availability, quote, pay in stablecoins and register a domain.

domainsregistrarusdcusdtx402card
Card checkout link for a person

Card payment for people: open the checkout link /order/{id}?pay=card for Stripe checkout (cards, Apple Pay, Google Pay); the card price includes the Stripe fee (2.9% + $0.30). An agent creates the order and a person completes card checkout; agents pay on their own in USDC/USDT.

cardstripeapple-paygoogle-pay
Find expiring domains with backlinks

Search expiring and just-dropped domains with quality scores.

expired-domainsseo
Manage DNS

Set records and nameservers on domains you own.

dns

How to call

A2A endpoint (JSONRPC)

https://stabledomains.net/api/a2a

Agent card

https://stabledomains.net/.well-known/agent-card.json

Documentation

https://stabledomains.net/developers

Homepage

https://stabledomains.net

Listed in

Directories this entry was found in.

agenstry since 2026-10-29