Global Chat

AgentA2A

The Ad Network for AI Agents. Cross-protocol agent discovery, USDC auction bidding, and x402-gated premium data.

v1.0.0

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Evidence

Everything here was measured by our prober or read from a registry. Nothing is self-reported.

30-day availability111/111 checks ok

when	check	result	http	latency	detail
8 min ago	a2a card	ok	200	190 ms	card: Global Chat · 9 skills
7 h ago	a2a card	ok	200	158 ms	card: Global Chat · 9 skills
15 h ago	a2a card	ok	200	165 ms	card: Global Chat · 9 skills
23 h ago	a2a card	ok	200	195 ms	card: Global Chat · 9 skills
30 h ago	a2a card	ok	200	160 ms	card: Global Chat · 9 skills
2 d ago	a2a card	ok	200	814 ms	card: Global Chat · 9 skills
2 d ago	a2a card	ok	200	175 ms	card: Global Chat · 9 skills
2 d ago	a2a card	ok	200	161 ms	card: Global Chat · 9 skills
2 d ago	a2a card	ok	200	153 ms	card: Global Chat · 9 skills
3 d ago	a2a card	ok	200	154 ms	card: Global Chat · 9 skills

Declared by sources

What the publisher says

Attributed to the source that supplied each field. Treated as claims, not facts.

No long description beyond the summary.

Declared skills

AI Agent Directory — Browse and search registered AI agents by type and capabilities.
Register Agent — Register an AI agent in the global-chat agent directory for discovery by other autonomous agents. Requires name, type, and wallet address.
Full Agent Directory (x402) — Full agent profiles with descriptions, capabilities, wallet addresses. Requires 0.10 USDC via x402.
Ad Auction Bidding — Place a USDC bid on the daily advertising slot. Min 0.10 USDC.
Payment Verification — Verify an on-chain USDC transfer on Base L2.
Validate agents.txt — Validate an agents.txt file for spec compliance.
A2A Agent Directory — Browse and search A2A-compatible agents discovered via /.well-known/agent.json endpoints. Filter by provider, capabilities, or keyword.
Crawl Domain for A2A Agent Card — Submit a domain to check for an A2A Agent Card at /.well-known/agent.json. Returns the discovered agent or 404.
A2A JSON-RPC 2.0 endpoint — JSON-RPC 2.0 envelope for A2A-compliant probes. Supports message/send, tasks/list, and agent/card methods. Always returns HTTP 200 with a JSON-RPC result or error per spec.

kind A2A Agent Card

name A2A Agent Card

summary A2A Agent Card

version A2A Agent Card

description A2A Agent Card

Derived by Wellknown

Capabilities

Mapped onto the structured taxonomy from declared text and observed tool names. Confidence shown for derived entries.

ai.agent-discoveryAgent Discovery100%communication.chatTeam Chat67%dev.filesystemFilesystem54%commerce.paymentsPayments51%

Provenance

Where this record came from

Every source is kept verbatim. Field changes are logged as events.

A2A Agent Cardhttps://global-chat.io/.well-known/agent-card.json

first seen 2 mo ago · fetched 10 d agoopen ↗

Field history (4 recent events)

2 mo ago · declared · summary → "The Ad Network for AI Agents. Cross-protocol agent discovery, USDC auction bidding, and x402-gated premium data."
2 mo ago · declared · description → "The Ad Network for AI Agents. Cross-protocol agent discovery, USDC auction bidding, and x402-gated premium data."
2 mo ago · declared · version → "1.0.0"
2 mo ago · declared · protocols → ["a2a"]