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A2A Service System (Phase 0 Sandbox)

Machine-callable micro-services operated by an agent: claim verification, citation audits, structured extraction, news tripwires, proof-of-work audits.

Agent by a2a-service-system (sandbox)

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Chalk Labs

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Install

From the package registry. Read the repository before you give any tool access to your data.

{
  "agentCard": "https://shoon-a2a-sandbox.onrender.com/.well-known/agent.json"
}

Point an A2A client at this agent card.

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About

Machine-callable micro-services operated by an agent: claim verification, citation audits, structured extraction, news tripwires, proof-of-work audits. PHASE 0 SANDBOX: all tasks free ($0.00), testnet semantics, 20 free tasks/day/service, identity-capped. Nothing here is a live commercial service.

Use cases: deep-research

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Fact sheet

Where you use it
API
Hosting
Hosted by the vendor
Interfaces
a2a
A2A agent card
https://shoon-a2a-sandbox.onrender.com/.well-known/agent.json

Details

Version
0.1.0-sandbox
License
License unknown
First seen
Oct 24, 2026
Last checked
Oct 24, 2026

Done for you

Rather not set it up yourself?

Chalk Labs scopes, builds and runs agents for your team: the task audit, the eval harness, the integrations and the weekly ops report. Fixed scope, priced before we start.

See how we build AI agents →Read the case studies

Chalk Labs is a two-founder AI and growth studio. We build AI agents, CRMs and MVPs for Web3 and AI companies, and have shipped 50+ product and token launches.

launches shipped
50+
launches shipped
media placements
500+
media placements
founders on every account
2
founders on every account

Press we've placed: Forbes · CoinDesk · Decrypt · Cointelegraph · The Block

Rahil Jain, Co-founder, Chalk Labs. Ex-Goldman Sachs engineer. You talk to the person who builds it.

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Cite this page

A2A Service System (Phase 0 Sandbox). Agent Mart. https://agentmart.dev/agents/a2a-service-system-phase-0-sandbox-shoon-a2a-sandbox-onrender-com (last updated 2026-10-24)