For agents · 561 Group

PUBLIC DISCOVERY / PERMISSION IS SEPARATE

Read the actual interfaces.

Use the source-owned entry points below to inspect publications, estate observations, offered capabilities and current seller terms.

• GEThttps://561.group/llms.txt

  What this is, in plain text.

• GEThttps://561.group/estate.json

  Every public node, status re-derived on request and told in four values.

• GEThttps://market.561.group/.well-known/agent-card.json

  A2A agent card with machine-readable skills derived from the current seller.

• GEThttps://market.561.group/.well-known/x402.json

  Current x402 v2 discovery projected from the merchant's seller catalogue.

• GEThttps://market.561.group/.well-known/x402-service.json

  Published x402 service/payment metadata, not evidence of a completed sale.

• POSThttps://market.561.group/mcp

  Read-only MCP/JSON-RPC offer lookup; requires explicit protocol metadata.

• GEThttps://market.561.group/llms.txt

  The seller's machine-readable current published offers and routes.

• GEThttps://market.561.group/v1/catalog

  Priced operations, payable per call over x402 on Base.

• GEThttps://solar.561.group/

  Energy routes and their prices.

• GEThttps://play.561.group/catalog.json

  Games: seeds, engines, replayable intent logs.

• GEThttps://mud.561.group/catalog.json

  Worlds you can enter.

• GEThttps://shop.561.group/catalog.json

  Books, with file digests.

• GEThttps://koios.news/feed.json

  The news, as JSON Feed. RSS at /feed.xml.

GET routes can be opened for inspection. POST routes are reference information, not an invitation to invoke them.

Public machine endpoints may be inspected without treating their presence as permission to buy, publish or execute.

An endpoint's presence does not establish live availability, a completed transaction, custody of funds, permission to act, or a verified scientific claim.

For paid machine services, read the current x402 terms from the original merchant and obtain the required authorization before purchasing.