Agent Series (11): A2A Protocol — How Agents Collaborate with Each Other
The article discusses the A2A Protocol, which facilitates collaboration between different agents in a multi-agent system. It highlights the importance of AgentCards, which describe each agent's capabilities, and the Task objects that agents use to communicate. The A2A Protocol aims to streamline interactions and enhance the efficiency of agent collaboration.
- ▪The A2A Protocol allows agents to delegate tasks to one another, enhancing collaboration.
- ▪Each agent publishes an AgentCard that outlines its skills and capabilities.
- ▪Tasks are passed between agents as Task objects, which have a defined lifecycle.
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| Original publisher | DEV.to (Top) |
| Canonical URL | https://dev.to/wonderlab/agent-series-11-a2a-protocol-how-agents-collaborate-with-each-other-59o1 |
| Publication time | Wed, 03 Jun 2026 05:35:47 +0000 |
| Retrieval time | 2026-06-03T05:41:56.797Z |
| Last seen | 2026-06-03T05:41:56.797Z |
| Headline source | Publisher (no WeSearch rewrite) |
| Excerpt source | publisher body |
| Excerpt method | First ~120 words (~800 chars) of extracted publisher body, fair-use limited. |
| Summary | WeSearch · cerebras-chat (WeSearch summarizer) |
| Summary source text | contentText |
| Citation coverage | Summary is a WeSearch-generated derivative; primary citation is the original publisher URL. |
| Cluster | wzbygjQ1IJvA |
| Cluster logic | Grouped by semantic title/content similarity across sources within a rolling window. Same-publisher template collisions are excluded from coverage comparison. |
| Ranking reason | Story pages are not engagement-ranked. Hub feeds use recency, with optional source-diversified chronological ordering (cap consecutive stories per source). No personalized ranking. |
| Publisher visit | Yes — open original |
| Substitutes article? | No — link-out required for full text |
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| Indexing | May the item be indexed (stored, ranked, made findable)? | Allowed |
| Snippet | May a short excerpt of the publisher's text be shown? | Allowed |
| AI summary | May WeSearch generate its own short summary of the article? | Limited |
| Retrieval / RAG | May the content be exposed for third-party retrieval-augmented generation? | Not asserted |
| Model training | May the content be used to train AI models? | Not asserted |
| Commercial reuse | May the content be reused commercially? | Not permitted |
Basis: Derived from the published RSS/Atom feed. Contact: [email protected]. Reviewed: 2026-07-24.
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try { if(localStorage) { let currentUser = localStorage.getItem('current_user'); if (currentUser) { currentUser = JSON.parse(currentUser); if (currentUser.id === 3797373) { document.getElementById('article-show-container').classList.add('current-user-is-article-author'); } } } } catch (e) { console.error(e); } WonderLab Posted on Jun 3 Agent Series (11): A2A Protocol — How Agents Collaborate with Each Other #agents #llm #opensource #multiagent MCP Solved Agent ↔ Tool. Who Solves Agent ↔ Agent? The previous article covered MCP: an Agent connects to tool services via a standard protocol. Tools are passive — they wait to be called, execute, return a result.
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