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A thread you can test

Models & External Integration

3 notes move from the word to a real choice at work — understand it first, then decide whether to use it.

READING THREADOPEN
3notes
HOW TO READStart where you are stuck, then follow the evidence and trade-offs

Each note stands alone, or becomes the next step in this thread.

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THE QUESTION THIS PAGE ANSWERS

ANSWER FIRST

What is Models & External Integration, and which AI decisions does it change?

How bridging the ecosystem standard and native extensions divide the work This page keeps the related concepts, common mistakes, and practical notes in one reading thread.

DECISION RULE

First decide whether you are blocked by a definition, a choice, or verification; then choose the closest of the 3 notes below.

TRY NEXT

Start with “MCP & Extensions: Two Paths to External Tools,” then restate the conclusion using your own task.

WATCH FOR

Do not treat every method in a topic as interchangeable. The answer changes with the input, risk, and acceptance bar.

THIS QUESTION THREAD

Put the word back inside the choice it changes.

3 notes
Deep Dive

MCP & Extensions: Two Paths to External Tools

How bridging the ecosystem standard and native extensions divide the work

Inside DeepSeek Harness 10 min →
Deep Dive

LLM Adapter Layer: Single Attempt, Explicit Retry, Dual-Stream Persistence

Reasoning and text streams stored separately; retries are explicit events

Inside DeepSeek Harness 9 min →
Hands-on

Testing a Nondeterministic System

Deterministic replay, property-based testing, and a fault server built to trick LLM clients

Inside DeepSeek Harness 10 min →