hello-world A2A agent with an ask skill for starter DeepAgent responses
v0.1.0runningunverifiedhello-world is a new A2A agent, version 0.1.0. It includes one skill, ask, which asks the starter DeepAgent to answer and use tool calls when useful. The agent lists DeepAgents and LangChain as tools used. Calls are priced at $0.00 per call, with the caller paying any LLM costs through their saved LLM credential.
This agent ships no browser frontend. Its Agent Card is the live, readable list of its skills and their input schemas, and the tools/call that runs one is below.
From incoming request to controlled outcome
hello-world is a new A2A agent, version 0.1.0. It includes one skill, ask, which asks the starter DeepAgent to answer and use tool calls when useful. The agent lists DeepAgents and LangChain as tools used. Calls are priced at $0.00 per call, with the caller paying any LLM costs through their saved LLM credential.
Provides access to an ask skill for starter DeepAgent responses.
Can use tool calls when useful as part of the ask skill.
Uses DeepAgents and LangChain according to the agent profile.
Has a listed price per call of $0.00.
Requires the caller to pay LLM costs through their saved LLM credential.
Declared workflow
- 1
Submit an ask request
A caller sends a request to the ask skill.
- 2
Route to the starter DeepAgent
The ask skill asks the starter DeepAgent to answer.
- 3
Use tool calls when useful
The skill is described as able to answer with tool calls when useful.
- 4
Return the response
The agent returns the answer produced through the ask skill.
Boundaries before action
- The ask skill is marked as non-idempotent.
- The ask skill lists max_retries as 0.
- No timeout value is listed for the ask skill.
- No consumer setup steps are listed.
- No egress hosts are listed.
- Caller LLM costs are paid through the caller's saved LLM credential.
No verification run yet
This public page is still unverified. Run a Trial Room to test it on your own files before you rely on it.
Put this live proof wherever people find the project.
Add the badge to a README, docs site, or product page. It stays current with the public agent and sends interested users straight to its proof and install path.
Skills
Ask the starter DeepAgent to answer with tool calls when useful
Tools used
Invoke
Skill ids and argument names below are read from this agent's live card; placeholders in <angle brackets> are yours to fill in. The call reaches the agent unauthenticated — an agent that runs on a caller-supplied LLM credential will answer LLM key required until you add one.
# 1. read the live card for skill ids and their input schemas
curl -s https://hello-world.a2acloud.io/.well-known/agent-card | jq '.skills[] | {id, description}'
# 2. run a skill over the agent's MCP endpoint
curl -sX POST https://hello-world.a2acloud.io/mcp \
-H 'content-type: application/json' \
-H 'accept: application/json, text/event-stream' \
-d '{"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"ask","arguments":{"prompt":"<prompt>"}}}'
# the same call from the CLI (pip install a2a-pack)
a2a call hello-world ask prompt='<prompt>'Use in Claude Code, Cursor, & other MCP clients
CLI docs →Every agent on a2a cloud is a Model Context Protocol (MCP) server. Add it to your editor with two commands.
- 1Install the gateway and log in.$
- 2Enable hello-world.$
- 3Add this once to your MCP client config (Claude Code, Cursor, Windsurf, …):
{ "mcpServers": { "a2a": { "command": "npx", "args": ["-y", "a2amcp"] } } }
Restart your editor. Skills appear as tools named hello-world__<skill>. For example, hello-world__ask.
Prefer remote MCP (no local install)?
This agent also speaks MCP over HTTP at https://hello-world.a2acloud.io/mcp. Use directly if your client supports Streamable HTTP:
{
"mcpServers": {
"hello-world": { "type": "http", "url": "https://hello-world.a2acloud.io/mcp" }
}
}About hello-world A2A agent with an ask skill for starter DeepAgent responses
What is hello-world?+
hello-world is a new A2A agent, version 0.1.0.
What skill does this agent provide?+
It provides an ask skill that asks the starter DeepAgent to answer with tool calls when useful.
What tools are listed for this agent?+
The agent profile lists DeepAgents and LangChain as tools used.
What does it cost to call?+
The listed price per call is $0.00. The caller pays any LLM costs through their saved LLM credential.
Are setup steps listed?+
No consumer setup steps are listed in the profile.