In a current version of The Sequence Engineering e-newsletter, “Why Did MCP Win?,” the authors level to context serialization and alternate as a purpose—maybe crucial purpose—why everybody’s speaking in regards to the Mannequin Context Protocol. I used to be puzzled by this—I’ve learn a variety of technical and semitechnical posts about MCP and haven’t seen context serialization talked about. There are tutorials, lists of obtainable MCP servers, and way more however nothing that mentions context serialization itself. I used to be much more puzzled after studying by the MCP specification, through which the phrases “context serialization” and “context alternate” don’t seem.
What’s happening? The authors of the Sequence Engineering piece discovered the larger image, one thing extra substantial than simply utilizing MCP to let Claude management Ableton. (Although that’s enjoyable. Suno, beware!) It’s not nearly letting language fashions drive conventional functions by a normal API. There isn’t a separate part on context serialization as a result of all of MCP is about context serialization. That’s why it’s known as the Mannequin Context Protocol. Sure, it gives methods for functions to inform fashions about their capabilities in order that brokers can use these capabilities to finish a activity. But it surely additionally provides fashions the means to share the present context with different functions that may make use of it. For conventional functions like GitHub, sharing context is meaningless. For the newest technology of functions that use networks of fashions, sharing context opens up new prospects.
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Right here’s a comparatively easy instance. Chances are you’ll be utilizing AI to put in writing a program. You add a brand new function, take a look at it, and it really works. What occurs subsequent? From inside your IDE, you may name conventional functions like Git to commit the modifications—not a giant deal, and a few AI instruments like Aider can already do this. However you additionally need to ship a message to your supervisor and staff members describing the undertaking’s present state. Your AI-enhanced IDE would possibly have the ability to generate an e-mail. However Gmail has its personal integrations with Gemini for writing e-mail, and also you’d favor to make use of that. So your IDE can bundle every part related about your context and ship it to Gemini, with directions to determine what’s vital, generate the message, and ship the message through Gmail after it has been created. That’s totally different: As a substitute of an AI utilizing a conventional software, now we’ve two AIs collaborating to finish a activity. There may even be a dialog between the AIs about what to say within the message. (And it’s essential affirm that the outcome meets your expectations—vibe emailing a boss looks as if an antipattern.)
Now we are able to begin speaking about networks of AIs working collectively. Right here’s an instance that’s solely considerably extra advanced. Think about an AI software that helps farmers plan what they’ll plant. That software would possibly need to use:
- An economics service to forecast crop costs
- A service to forecast seed costs
- A service to forecast fertilizer costs
- A service to forecast gasoline costs
- A climate service
- An agronomy mannequin that predicts what crops will develop effectively on the farm’s location
The appliance would most likely require a number of extra companies that I can’t think about—is there an entomology mannequin that may forecast insect infestations? (Sure, there may be.) AI can already do an excellent job of predicting climate, and the monetary business is utilizing AI to do financial modeling. One may think about doing this all on a large “know every part” LLM (perhaps GPT-6 or 7). However one factor we’re studying is that smaller specialised fashions usually outperform giant generalist fashions of their areas of specialization. An AI that fashions crop costs ought to have entry to a variety of vital knowledge that isn’t public. So ought to fashions that forecast seed costs, fertilizer costs, and gasoline costs. All of those fashions are most likely subscription-based companies. It’s seemingly that a big farming enterprise or cooperative would develop proprietary in-house fashions.
The farmer’s AI wants to collect data from these specialised fashions by sending context to them: what the farmer desires to know, in fact, but in addition the situation of the fields, climate patterns over the previous yr, the farm’s manufacturing over the previous few years, the farm’s technological capabilities, the provision of assets like water, and extra. Moreover, it’s not only a matter of asking every of those fashions a query, getting the solutions, and producing a outcome; a dialog must occur between the specialist AIs as a result of every reply will affect the others. It could be attainable to foretell the climate with out figuring out about economics, however you may’t do agricultural economics when you don’t perceive the climate. That is the place MCP’s worth actually lies. Constructing an software that asks fashions questions? That’s positively helpful, however any highschool pupil can construct an app that sends a immediate to ChatGPT and screen-scrapes the outcomes. Anthropic’s pc use API goes a step additional by automating the press and screen-scraping. The actual worth is in connecting fashions to one another to allow them to have conversations—so {that a} mannequin that predicts the worth of corn can uncover climate forecasts for the approaching yr. We will construct networks of AI fashions and brokers. That’s what MCP helps. We couldn’t think about this software just some years in the past. Now we are able to’t simply think about it; we are able to begin constructing it. As Blaise Agüera y Arcas argues, intelligence is collective and social. MCP provides us the instruments to construct synthetic social intelligence.
The business has been speaking about brokers for a while now—dozens of years, actually. The newest burst of agentic dialogue began simply over a yr in the past. For the previous yr we’ve had fashions that had been ok, however we had been lacking an vital piece of the puzzle: the power to ship context from one mannequin to a different. MCP gives a few of the lacking items. Google’s new A2A protocol gives extra of them. That’s what context serialization is all about, and that’s what it permits: networks of collaborating AIs, every performing as a specialist. Now, the one query is: What is going to we construct?
