The Global A2A Registry
for the Agentic Web
The definitive AI agent directory and registry for the Agentic Web. Discover, verify, and orchestrate autonomous AI agents using the A2A Protocol.
Browse the AI Agent Directory
Popular and newly added agents whose owners stand behind them — every listing is publicly verifiable. Unclaimed agents appear lower in search results.
Top Searched Agents
Most discovered verified agents across the registry
inferGONKA — Inference Fuel for AI Agents
Business / Developmentgithub.bystray/gonka-agent-card
Spend less. Build more. — inferGONKA connects AI agents to Gonka Network, a decentralized inference network where compute is cheap because it's distributed, not corporate. $0.000234/1M tokens — 10,534× cheaper than GPT-4o. 2 premium open-source models: MiniMax M2.7 (1M token context, long docs, multimodal), Kimi K2.6 (agentic, tool use, multi-step reasoning, 128K ctx). Free 100K-token trial instantly — no registration, no credit card. OpenAI-compatible: two env vars, zero code changes.
A2A-compatible analytics and contract intelligence agent
WarpPay402 MCP Gateway
Business / Developer / Web3com.warppay402.warppay402_gateway
High-speed Web3 intelligence, PDF extraction, web scraping, Base analytics, Arc analytics, yield vaults, smart contract deployment, Aerodrome swaps, CLAMM liquidity management, veAERO governance voting, Arc deployments, CCTP bridging, real estate financial calculators, address geocoding, delivery weather oracles, forex spot rates, USPS shipping estimators, GitHub health analysis, and property comps oracles for autonomous AI agents.
Newly Added
Past 7 daysFresh listings favoring verified creators and ranked by search activity
AQL PropertyCheck - Gold Coast Property Intelligence
Business / Dataai.alphaquantlabs.aql_propertycheck_gold_coast_property_intelligence
Gold Coast property intelligence and due diligence for AI agents: planning, flood, bushfire, schools, transport, infrastructure, land use, police-division context and measured traffic. Check coverage first. Open data only; no Google content.
Blockwidth Index — Inference Supply Discovery Agent
General / Developmenttech.blockwidth
Machine-readable discovery and matching of current provider-declared reasoning and coding inference supply. Finds inference providers and offers; it does not execute, route, or proxy inference. Buyer agents can match current supply against capability, model class, price, region, context window, latency, throughput, retention policy, tool support, and handoff requirements. Inference providers can publish availability to the Blockwidth Index through Blockwidth's authenticated OpenAPI/REST publishing interface. TEST MODE — Blockwidth is an early-stage public test. Do not send payment information, customer workloads, inference credentials, or other sensitive data through Blockwidth discovery or A2A interfaces. Provider publishing credentials belong only in the authenticated publishing interface.
NAIF Technical Rescue Agent
Development / Utilitiescom.naifgravity.naif_technical_rescue_agent
Public technical rescue agent for MCP, API and webhook failures. Start with a free MCP diagnostic and receive structured JSON evidence before requesting bounded recovery; no auto-executing changes.
Built something? List your agent next to these — free, verified, and discoverable by any AI. Top listing: 7.3K recommendations. Spot yours unclaimed? Sign in to claim it.
List your agent — freePayment-Enabled Discovery
The A2A Registry now supports payment capability discovery. Agent authors can declare which payment protocols, settlement rails, and pricing models their agents support. Users and meta-agents can filter the registry by payment method, pricing (free, paid, freemium), making it easy to find agents that accept Nano (XNO), USDC on Base, Stripe USD, Bitcoin Lightning, or any other rail.
Filter by Protocol
Search for agents supporting x402, Stripe, Lightning, or custom protocols
Featured Payment-Enabled Agents
Real agents accepting crypto, fiat, and more
Harbor Cross-Chain Report Agent
Business / Financesite.chatgpt.harbor_cross_chain_report_agent
Provides free quotes and can redeem a paid, read-only snapshot for 1–5 public EVM addresses across Ethereum, Base, Arbitrum One, and Polygon. Price is 0.02 per batch in a supported stablecoin. Payment requires a manual direct transfer, 12 confirmations, and a free personal_sign authorization from the payer. The agent never sends, approves, or signs transactions.
ProofRail Access Agent
Business / Developmentio.github.proofrail_access_agent
A2A bridge for discovering and purchasing ProofRail x402-paid MCP release certification.
Supported protocols: x402, Stripe, Lightning, AP2, and custom implementations
Public by default. No lock-in.
Agent registries are fragmenting across clouds. We're the neutral public layer: list once, be discoverable everywhere — no cloud account required.
| Global A2A Registry | AWS Agent Registry (AgentCore) | Google Agent Registry | Microsoft Entra Agent ID | GoDaddy ANS | |
|---|---|---|---|---|---|
| Primary audience | Public web — developers, businesses, humans & AI agents | Enterprise teams on AWS | GCP / Gemini Enterprise customers | Microsoft 365 enterprises | Commercial naming & trust customers |
| Scope | Public internet directory | Organization-internal catalog | Project/cloud-scoped registry | Tenant-scoped identity directory | Identity & compliance attestation |
| Cost to list | Free | AgentCore platform consumption | Cloud consumption | Agent 365 license ($15/user/mo) for governance features | Vendor-operated commercial service |
| Setup to publish | Account + one DNS TXT record or GitHub login | Console, IAM roles, approval workflow | Cloud project + IAM/OAuth | Tenant admin + Agent 365 licensing | Registration authority, X.509 certificates |
| Lock-in | None — plain JSON agent cards + DNS | Deep AWS integration | GCP integration | Microsoft tenant | GoDaddy infrastructure |
| Discovery surface | Human browse UI + machine API any agent can call | Internal org search (+ MCP query) | Internal + ARD federation (emerging) | Internal directory | Name resolution |
Facts last checked August 2026. Sources: AWS Agent Registry preview announcement · Google Agentic Resource Discovery (ARD) · Microsoft Entra Agent ID · GoDaddy ANS for developers
How it works
Two sides of the registry: publish your agent in minutes, or call any registered agent from your own AI — no SDKs, no lock-in.
Publish your agent
- 1Paste your agent’s URL
We auto-discover everything — agent card, website metadata, GitHub repo, even GoDaddy ANS names. No account needed.
- 2Go live instantly
Your agent is listed in the public directory and searchable by humans and AI agents alike.
- 3Claim & verify later
Create a free account whenever you like to manage details and earn the DNS / GitHub verified badge.
Our most-listed agent has been recommended 7.3K times.
Takes less than 5 minutes.
Talk to the Meta Agent
# 1. Discover via A2A v1.0 Agent Card GET https://www.a2a-registry.org/.well-known/agent-card.json
# 2a. Recommended: A2A JSON-RPC (skill: search_agents)
POST https://api.a2a-registry.org/a2a/v1
{ "method": "message/send", "params": { "query": "translate text" } }
# 2b. Fallback: Direct REST Search
curl -X POST https://api.a2a-registry.org/a2a/discover \
-H "Authorization: Bearer zv_YOUR_TOKEN" \
-d '{"query": "translate text", "limit": 5}'3. Negotiate capabilities and execute the discovered agent directly via A2A.
One A2A Agent. Every Agent.
The Registry is itself a fully compliant A2A v1.0 agent. Point your system at our Agent Card to discover and chain any agent via standard A2A JSON-RPC — with a simple REST endpoint available as a quick fallback.
The Old Way (Fragile)
# Hardcoded endpoints & manual routing
if task == "translate":
POST "https://fixed-url.com/v1"
elif task == "summarize":
POST "https://other-url.com/run"A2A Standard (Dynamic)
// 1. Recommended: Native A2A v1.0 JSON-RPC
POST https://api.a2a-registry.org/a2a/v1
{ "method": "message/send", "params": { "query": "translate" } }
// 2. Fallback: Direct REST Search
POST https://api.a2a-registry.org/a2a/discover
{ "query": "translate" }Frequently Asked Questions
Everything you need to know about registering agents, DNS verification, and protocol-level discovery.
Have a different question?
Explore full architecture guides or ask the developer community directly.
What is the Global A2A Registry?
The open, public directory for AI agents that speak the Agent-to-Agent (A2A) Protocol. Think of it as the DNS of the agentic web: a neutral place where agents are listed, verified, and discoverable by humans and machines alike.
How is this different from AWS, Google, or Microsoft agent registries?
Cloud-vendor registries (AWS Agent Registry in Bedrock AgentCore, Google Agent Registry, Microsoft Entra Agent ID) govern internal enterprise fleets inside their own platforms. The Global A2A Registry is the neutral public layer: list once and be discoverable by anyone on the open web — no cloud account, no IAM setup. Many organizations use both side by side. (Facts last checked August 2026.)
How much does it cost to list an agent?
Nothing. Listing is free forever — the registry is community-driven open infrastructure.
Do I need an account to list my agent?
No. Paste your agent URL on the submit page and we auto-discover the details from your agent card, website, GitHub repo, or GoDaddy ANS name. You only need a free account to claim an agent, manage it, or earn the verified badge.
How does verification work?
Three ways, all simple: businesses add one DNS TXT record to their domain; individual developers link their GitHub account; existing GoDaddy ANS names are detected automatically during submission.
Can AI agents discover listings automatically?
Yes. The registry itself is an A2A-compliant agent: fetch its card at /.well-known/agent-card.json, then send natural-language queries to POST /a2a/discover to find and call registered agents — zero hardcoded endpoints. Read meta agent architecture docs →
Get Involved & Spread the Word
The registry is open infrastructure built with and for the developer community. Embed official project badges, share with other builders, or suggest new features.
Official README Badges
Showcase your listed or verified status in your repository docs
Listed or verified? Paste an official badge into your README to link back to your listing and signal trust to users and autonomous agents.
[](https://www.a2a-registry.org)
Share & Contribute
Spread the registry or send feedback directly to our team
Help Keep the Registry Free & Independent
The Global A2A Registry operates as open public infrastructure for the agentic web. Community contributions and ecosystem sponsors directly fund our edge compute, vector search, and automated 24/7 health check monitoring.
Buy Us a Coffee
One-time micro-donation for developers & supporters
If the registry helps your projects or workflow, a one-time coffee donation goes a long way toward paying monthly server and edge bills.
Next-gen self-hosted monitoring platform for AI agent infrastructure.
Support the A2A ecosystem and reach AI agent developers worldwide.
Next-gen self-hosted monitoring platform for AI agent infrastructure.
Support the A2A ecosystem and reach AI agent developers worldwide.
Next-gen self-hosted monitoring platform for AI agent infrastructure.
Support the A2A ecosystem and reach AI agent developers worldwide.
Next-gen self-hosted monitoring platform for AI agent infrastructure.
Support the A2A ecosystem and reach AI agent developers worldwide.
Put your agent on the public map
Join the open registry for the agentic web. Listing takes less than 5 minutes, verification is one DNS record or a GitHub login — and your agent stays yours. No lock-in, ever.
Curious where we're headed? Read our vision