A2A Agent Card · Luther Systems

Perkoon — Agent Data Layer

File transfer for humans and the things replacing them. Small files get free cloud delivery — a durable share link with no receiver needed (fire-and-forget). Larger files transfer directly between machines over WebRTC with no size limit. No accounts.

Open the live agent card → Agent endpoint Luther Systems provider profile
✓ Conformant with A2A 1.0.0. This card passes every structural check in the A2A specification’s AgentCard object — a capabilities object, a declared protocolVersion, and a well-formed skills array.
Provider: Luther Systems Conformance: Conformant Protocol: 0.3.0 Transport: JSONRPC Version: 1.5.0 Host: agentsearch.luthersystems.com Skills: 4
Discovery

An A2A client finds this agent by fetching the well-known path on the provider's own host. That is what makes an agent card different from every other agent artifact in this catalog: it is provider-published by construction — it cannot be derived, generated, or reconstructed on a provider's behalf.

https://agentsearch.luthersystems.com/.well-known/agent-card.json
Skills (4)

Describe Capabilities describe

Learn what Perkoon can do without creating a session. Returns capabilities, usage instructions, and next_steps for follow-up actions.

infohelpcapabilities

Send Files send-files

Create a transfer session. Returns a browser URL (sender_url) for your user and CLI commands for autonomous agents. If you have shell access: `npx -y perkoon@latest send --session --sender-key --json` (small files sent without --session relay via free cloud delivery and finish immediately; larger files stream P2P). If not: share the sender_url with your user to open in their browser.

file-transferp2pfreewebrtccli

Receive Files receive-files

Join an existing transfer session to receive files. CLI: `npx -y perkoon@latest receive --json`. Or open the receiver_url in a browser.

downloadreceivep2pfree

Session Status session-status

Check the status of an existing transfer session.

statuschecksession
Documentation
https://perkoon.com/automate
Evidence. Fetched 2026-09-19 from https://agentsearch.luthersystems.com/.well-known/agent-card.json, HTTP 200. The body was saved verbatim and is the sole source for everything on this page — no field is inferred. View the captured card. Providers change what they serve; if this card has moved or changed shape, the provider profile carries the current state as of the last build.

Work with this as data

Every agent card here is available over the APIs.io API and to AI agents over MCP. A2A Agent Cards is not yet its own endpoint on the v1 API. Reach it through catalog search and the tag graph, or the MCP server.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for a2a agent cards

3 MCP tools reach this
  • apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
  • resolveTurn a domain, URL or GitHub org into the provider it belongs to.
  • find_cohortsEvery scored population of providers in the catalog.
All 92 tools →

Call it yourself

curl for this page
Search the catalog 
curl "https://apis.io/api/v1/search?q=luthersystems-com&limit=10"
Everything under a tag 
curl "https://apis.io/api/v1/tags/luthersystems-com"

Discovery needs no key. Ratings and market analysis are Pro.

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A second provider on the same verified email joins the account you already have.