A2A Multi Agent
PassAudited by ClawScan on May 13, 2026.
Overview
The provided artifacts look like a benign A2A protocol reference skill, with only expected cautions around web documentation fetching, authentication guidance, and cross-agent data flows.
This appears safe to install as an instruction-only reference skill. Before using it to generate production code, review any web-fetched sources, keep credentials out of code, and explicitly decide which external agents, MCP tools, and callback URLs may receive your data. Some listed files were omitted or truncated in the supplied review context, so inspect the complete package if you need maximum assurance.
Findings (3)
Artifact-based informational review of SKILL.md, metadata, install specs, static scan signals, and capability signals. ClawScan does not execute the skill or run runtime probes.
When you ask for A2A implementation code, the agent may browse external documentation sites first.
This directs the agent to invoke web tools before coding. It is disclosed and scoped to protocol documentation, so it is purpose-aligned rather than suspicious.
Before writing any A2A implementation code, you MUST web-search and/or web-fetch the relevant official documentation.
Allow browsing only for trusted documentation sources and ask the agent to cite what it fetched if source freshness matters.
Code generated with this skill may need service credentials or delegated authority for agent-to-agent calls.
The skill covers credential and identity patterns for user-built A2A systems. The provided package does not require or collect credentials itself and also recommends HTTPS, rotation, and not hardcoding secrets.
Implement A2A authentication — API keys, Bearer tokens, OAuth 2.0, OpenID Connect, and mutual TLS.
Use least-privilege credentials, store secrets in a vault or environment variables, and review generated code for accidental logging or hardcoding of tokens.
If you use the skill to build real systems, prompts, task data, files, or results may be sent to other agents or MCP tools depending on the generated design.
The skill teaches cross-agent and cross-protocol delegation patterns where task data can pass between agents and tool servers. This is the core purpose of the skill, but it deserves user attention.
Client Agent → (A2A) → Bridge Agent → (MCP) → Tool Server
Review generated architectures for clear data boundaries, authenticated peers, allowlisted endpoints, redacted logs, and user approval before sending sensitive data to other agents.