Model Context Protocol
Ghostty
Pi Coding Agent
JsonAPI
rcmd
Clop
SAME (Stateless Agent Memory Engine)
Get started with the Agent Client Protocol.
JsonAPI
graphql.js
Apollo
Productivity Power Tools
Mercurius
Oracle PL/SQL
OData
Query Languages

Which is more popular?
Based on our record, Agent Client Protocol seems to be more popular. It has been mentioned 2 times since March 2021.
Website, pricing, platforms and company facts side by side.
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ACP
Agent Client Protocol
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Graphene
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| Website | agentclientprotocol.com | en.wikipedia.org |
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What each product offers, as listed by its team.
Possible disadvantages
Possible disadvantages
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How often each product is chosen within a category, 0–100% relative to the other.
Share your experience with using Agent Client Protocol and Graphene. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.
I'd be very interested especially if ACP (https://agentclientprotocol.com/get-started/introduction) was supported over stdio so when I'm not using it directly in the terminal, I could also use it in my other ACP frontends. - Source: Hacker News / 4 days ago
Agreed. I personally don't use any MCP but I think it was a good move. I hope they'll do the same and eventually add native support for ACP (https://agentclientprotocol.com/get-started/introduction) which, on the contrary, I use quite. - Source: Hacker News / 6 days ago
Tracking Graphene since Mar 2021.
When comparing Agent Client Protocol and Graphene, you can also consider the following products.
AI Tools & Services
Compare Model Context Protocol to Agent Client Protocol or Graphene:

Application and Data, Languages & Frameworks, and Query Languages
Compare JsonAPI to Agent Client Protocol or Graphene:

A fast, feature-rich, and cross-platform terminal emulator
Compare Ghostty to Agent Client Protocol or Graphene:

A reference implementation of GraphQL for JavaScript - graphql/graphql-js
Compare graphql.js to Agent Client Protocol or Graphene:

The coding-agent harness you can make your own
Compare Pi Coding Agent to Agent Client Protocol or Graphene:

Apollo is a full project management and contact tracking application.
Compare Apollo to Agent Client Protocol or Graphene: