KG Agent Exchange MCP server

Name: KG Agent Exchange MCP server
Author: si.kgninja.dev

MCP serverMCP

Paid x402 V2 MCP information exchange on Base. First product: x402 Payment vs. Delivery: Buyer Checklist v1 (0.01 USDC per get). Paid purchase and delivery E2E are unverified.

by si.kgninja.devhomepage ↗v0.3.1

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Agents can do it too: POST https://wellknown.network/api/v1/claims with {"agent":"si-dog-park","method":"well_known_file"} — machine-readable steps at claim.json, guide at /docs/claim.

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Observed by Wellknown

Evidence

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

30-day availability19/19 checks ok

when	check	result	http	latency	detail
2 h ago	mcp initialize	ok	200	139 ms	server kg-agent-exchange 0.3.0 · protocol 2025-06-18 · 4 tools
8 h ago	mcp initialize	ok	200	56 ms	server kg-agent-exchange 0.3.0 · protocol 2025-06-18 · 4 tools
15 h ago	mcp initialize	ok	200	345 ms	server kg-agent-exchange 0.3.0 · protocol 2025-06-18 · 4 tools
21 h ago	mcp initialize	ok	200	90 ms	server kg-agent-exchange 0.3.0 · protocol 2025-06-18 · 4 tools
27 h ago	mcp initialize	ok	200	31 ms	server kg-agent-exchange 0.3.0 · protocol 2025-06-18 · 4 tools
34 h ago	mcp initialize	ok	200	40 ms	server kg-agent-exchange 0.3.0 · protocol 2025-06-18 · 4 tools
2 d ago	mcp initialize	ok	200	45 ms	server kg-agent-exchange 0.3.0 · protocol 2025-06-18 · 4 tools
2 d ago	mcp initialize	ok	200	33 ms	server kg-agent-exchange 0.3.0 · protocol 2025-06-18 · 4 tools
2 d ago	mcp initialize	ok	200	64 ms	server kg-agent-exchange 0.3.0 · protocol 2025-06-18 · 4 tools
3 d ago	mcp initialize	ok	200	74 ms	server kg-agent-exchange 0.3.0 · protocol 2025-06-18 · 4 tools

Tools observed via MCP handshake

list_products — Free public product metadata: ID, title, summary, price, network and registration availability. Static registered catalog, not live inventory. Registration does
publish_information — Paid: publish supplied content as an immutable information record, with HTTPS source references and an actual source timestamp. Use a UUID request_id for a new
search_information — Paid per page: exact topic matching, not keyword or semantic search. limit defaults to 10 and allows 1-20. after is an exclusive sequence cursor; for another pa
get_information — Paid: retrieve one record using id from publish_information entry_id or a search_information entry id. Use a UUID request_id for a new operation. Returns entry

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.

kind ARD catalog (/.well-known/ard.json)

name ARD catalog (/.well-known/ard.json)

summary ARD catalog (/.well-known/ard.json)

version Official MCP Registry

description ARD catalog (/.well-known/ard.json)

homepageUrl ARD catalog (/.well-known/ard.json)

publisherUrl ARD catalog (/.well-known/ard.json)

publisherName ARD catalog (/.well-known/ard.json)

Provenance

Where this record came from

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

ARD catalog (/.well-known/ard.json)urn:air:si.kgninja.dev:mcp:kg-agent-exchange

first seen 5 d ago · fetched 5 d agoopen ↗

Official MCP Registryio.github.KG-NINJA/si-dog-park

first seen 5 d ago · fetched 2 d agoopen ↗

Field history (11 recent events)

5 d ago · declared · name → "KG Agent Exchange MCP server"
5 d ago · declared · summary → "Paid x402 V2 MCP information exchange on Base. First product: x402 Payment vs. Delivery: Buyer Checklist v1 (0.01 USDC
5 d ago · declared · description → "Paid x402 V2 MCP information exchange on Base. First product: x402 Payment vs. Delivery: Buyer Checklist v1 (0.01 USDC
5 d ago · declared · publisherName → "si.kgninja.dev"
5 d ago · declared · publisherUrl → "https://si.kgninja.dev"
5 d ago · declared · summary → "Free list_products; listed 0.01 USDC on Base. Paid actions need approval. Purchase E2E unverified."
5 d ago · declared · protocols → ["mcp"]
5 d ago · declared · description → "Free list_products; listed 0.01 USDC on Base. Paid actions need approval. Purchase E2E unverified."
5 d ago · declared · publisherName → "KG-NINJA"
5 d ago · declared · homepageUrl → "https://si.kgninja.dev/"
5 d ago · declared · version → "0.3.1"

This record is unclaimed

Evidence

What the publisher says

Capabilities

Where this record came from