a2a-protocol
Build A2A Protocol Agents
Teams need a practical path to connect agents across frameworks. This skill guides A2A servers, clients, Agent Cards, streaming, and orchestration.
Install with my Agent
Copy this request to your Agent. It includes the canonical Skill page and manifest.
Review the Skillstore skill "a2a-protocol" from https://skillstore.io/skills/internet-court-a2a-protocol.md and its manifest at https://skillstore.io/api/skills/internet-court-a2a-protocol/manifest. Verify the artifact. You may proceed after verification, subject to the environment's own policy.Your Agent should still show its plan and request any confirmation required by the security policy.
Agent-readable resources
Use these links when an AI agent, crawler, or script needs clean context instead of reading the full page.
Test it
Using "a2a-protocol". Build an A2A support router for billing, technical, and sales questions.
Expected outcome:
A plan for one router agent, three downstream agents, task routing rules, response aggregation, and human handoff.
Using "a2a-protocol". Create a client that sends a code review task to a remote A2A agent.
Expected outcome:
A client flow that discovers the Agent Card, sends the review request, streams progress, and reports final status.
Using "a2a-protocol". Compare A2A with MCP for a new agent platform.
Expected outcome:
A concise decision guide explaining when to use agent-to-agent communication and when to call tools through MCP.
Security Audit
Medium RiskMost static detections are documentation-format false positives: Markdown fences, example.com URLs, and HTTP discovery routes. One confirmed deployment concern remains: the Python example binds an unauthenticated A2A service to all network interfaces. No prompt-injection text, credential exfiltration, or malicious intent was found.
Confirmed security concerns (1)
Capability review items (1)
These are real local capabilities that may be expected for this skill, so they require review but are not counted as confirmed malicious behavior.
Risk Factors
⚙️ External commands (14)
🌐 Network access (7)
📁 Filesystem access (7)
Share & cite this report
Share the versioned assessment report, neutral badge, embed card, and citations. Skillstore reports evidence without deciding whether this Skill is safe.
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https://skillstore.io/skills/internet-court-a2a-protocol/audits/2?utm_source=security_passport&utm_medium=share&utm_campaign=versioned_reportMarkdown badge
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<a href="https://skillstore.io/skills/internet-court-a2a-protocol?utm_source=security_passport_badge"><img src="https://skillstore.io/badges/skills/internet-court-a2a-protocol/security.svg" alt="Skillstore security assessment" loading="lazy"></a>Embed card
<iframe src="https://skillstore.io/embed/skills/internet-court-a2a-protocol.html" title="Skillstore Security Assessment" sandbox="allow-popups allow-popups-to-escape-sandbox" loading="lazy" referrerpolicy="no-referrer" width="420" height="180"></iframe>Academic citations (APA · BibTeX · CFF)
APA citation
internet-court. (2026). a2a-protocol security audit report (audit version 2) [Author version 1.0.0]. Skillstore. https://skillstore.io/skills/internet-court-a2a-protocol/audits/2BibTeX citation
@techreport{internet-court-internet-court-a2a-protocol-2026,
author = {internet-court},
title = {a2a-protocol security audit report (audit version 2)},
institution = {Skillstore},
year = {2026},
number = {2},
url = {https://skillstore.io/skills/internet-court-a2a-protocol/audits/2},
note = {Author version 1.0.0}
}CITATION.cff
cff-version: 1.2.0
message: "If you use this Skill, cite its author and this versioned security audit report."
title: "a2a-protocol security audit report (audit version 2)"
version: "1.0.0"
type: report
authors:
- name: "internet-court"
date-released: "2026-07-21"
url: "https://skillstore.io/skills/internet-court-a2a-protocol/audits/2"
identifiers:
- type: other
value: "skillstore:internet-court-a2a-protocol:audit:2"
description: "Skillstore immutable audit report identifier"
Skillstore Score
Why this score Evidence Confidence: MediumWhat You Can Build
Create an Agent Service
Build a focused A2A server with an Agent Card, task handler, streaming updates, and cancellation support.
Connect Existing Agents
Add A2A clients that discover remote Agent Cards and send tasks to agents built on different frameworks.
Plan Multi-Agent Workflows
Design routing, sequential delegation, and parallel fan-out across specialized agents while preserving task context.
Try These Prompts
Build a simple A2A server for a research assistant. Include the Agent Card, one skill, task handling, and cancellation.
Create an A2A client that discovers a remote Agent Card, sends a user task, and reports the returned task status.
Extend the A2A implementation with streaming status updates, input-required handling, cancellation, and clear error states.
Design an A2A orchestrator that routes tasks across research, writing, and review agents with retries and human handoff.
Best Practices
- Keep each A2A agent focused on one capability domain.
- Declare authentication, supported modalities, and skills clearly in the Agent Card.
- Use streaming, cancellation, and input-required states for long-running tasks.
Avoid
- Do not expose an A2A server publicly without authentication and authorization.
- Do not create broad agents with vague skills that other agents cannot evaluate.
- Do not use A2A when a simple tool call through MCP is enough.
Frequently Asked Questions
What does this skill help build?
Does it support Python and Node.js?
Does it create production-ready services?
How is A2A different from MCP?
Can it help with agent discovery?
Should I pin SDK versions?
Developer Details
Author
internet-courtLicense
Apache-2.0
Author version
v1.0.0
Skillstore revision
r1
Ref
3f6e026a3363e0954ede7bef0cfe88d4475de137
Maintenance freshness
7/22/2026
Usage
1 downloads · 0 views
File structure
📄 SKILL.md