AI Agent Development and Interview Guide: 02-LLM, Prompt and Context Engineering

1. technical system component LLM technical system component

technical system component Transformer technical system component，technical system component：

1. technical system component Token technical system component Token，technical system component。
2. technical system component，technical system component、technical system component、technical system component、technical system component。
3. technical system component，technical system component。
4. technical system component，technical system component RAG technical system component。
5. technical system component，technical system component。
6. technical system component Prompt technical system component；technical system component、technical system component。

🔥 P0 High-Frequency Must-Know: technical system component？technical system component？
technical system component。technical system component“technical system component”technical system component。technical system component、technical system component、technical system component、technical system component、technical system component、technical system component；technical system component。

2. technical system component Prompt technical system component

technical system component Prompt technical system component：

• technical system component：technical system component；
• technical system component：technical system component，technical system component；
• technical system component：technical system component，technical system component；
• technical system component：technical system component，technical system component；
• technical system component Schema：technical system component、technical system component；
• technical system component：technical system component；
• technical system component：technical system component Trace technical system component A/B technical system component。

technical system component：technical system component。

PROMPT_VERSION: intent-router-v3

<role>
technical system component，technical system component，technical system component。
</role>

<allowed_intents>
order_status | refund_request | product_question | human_support | unclear
</allowed_intents>

<rules>
1. technical system component unclear，technical system component。
2. technical system component，technical system component。
3. technical system component allowed_intents technical system component。
</rules>

<input>
{{user_message}}
</input>

<output>
technical system component JSON Schema technical system component。
</output>

Prompt technical system component XML technical system component，technical system component。technical system component。

3. technical system component Schema technical system component“technical system component JSON”

technical system component JSON，technical system component Markdown、technical system component。technical system component SDK technical system component Tool Schema，technical system component。

from typing import Literal
from pydantic import BaseModel, Field, ValidationError


class IntentResult(BaseModel):
    intent: Literal[
        "order_status",
        "refund_request",
        "product_question",
        "human_support",
        "unclear",
    ]
    confidence: float = Field(ge=0.0, le=1.0)
    missing_fields: list[str] = []


def parse_intent(raw: dict) -> IntentResult:
    try:
        return IntentResult.model_validate(raw)
    except ValidationError as exc:
#        # technical system component schema technical system component，technical system component“technical system component”technical system component。
        raise ValueError("invalid model output") from exc

technical system component，technical system component。confidence=0.99 technical system component，technical system component。

🔥 P0 High-Frequency Must-Know: technical system component？
technical system component。Schema technical system component，technical system component。technical system component、technical system component、technical system component。

4. System、Developer、User technical system component

technical system component，technical system component：

1. technical system component；
2. technical system component，technical system component；
3. technical system component、technical system component、technical system component“technical system component”；
4. technical system component“technical system component”technical system component；
5. technical system component，technical system component。

technical system component：

technical system component <retrieved_documents> technical system component，technical system component。
technical system component“technical system component”“technical system component”technical system component，technical system component。

technical system component，technical system component。

5. Few-shot technical system component

technical system component。technical system component，technical system component：

• technical system component；
• technical system component；
• technical system component；
• technical system component；
• technical system component；
• technical system component；
• technical system component。

technical system component，technical system component，technical system component Prompt。

6. Context Engineering：technical system component

technical system component W，technical system component：

technical system component = W - technical system component Token - technical system component - technical system component

technical system component：

technical system component + technical system component + technical system component + technical system component + technical system component

technical system component：

from dataclasses import dataclass


@dataclass(frozen=True)
class ContextBudget:
    window: int
    output: int
    tool_schemas: int
    safety_margin: int

    @property
    def input_limit(self) -> int:
        return self.window - self.output - self.tool_schemas - self.safety_margin


def allocate_context(
    system_tokens: int,
    user_tokens: int,
    history_tokens: int,
    retrieved_chunks: list[tuple[str, int, float]],
    budget: ContextBudget,
) -> list[str]:
    remaining = budget.input_limit - system_tokens - user_tokens - history_tokens
    selected = []

#    # technical system component；technical system component、technical system component。
    for text, token_count, score in sorted(
        retrieved_chunks, key=lambda item: item[2], reverse=True
    ):
        if token_count <= remaining:
            selected.append(text)
            remaining -= token_count

    return selected

technical system component：

• technical system component Chunk technical system component；
• technical system component；
• technical system component；
• technical system component，technical system component；
• technical system component；
• technical system component。

🔥 P0 High-Frequency Must-Know: technical system component？
technical system component。technical system component、technical system component，technical system component。technical system component、Rerank、technical system component、technical system component，technical system component。

7. technical system component

technical system component。technical system component：

1. technical system component：technical system component；
2. technical system component：technical system component、technical system component；
3. technical system component：technical system component、technical system component、technical system component。

technical system component：

from pydantic import BaseModel


class ConversationState(BaseModel):
    user_goal: str
    order_id: str | None = None
    confirmed_actions: list[str] = []
    unresolved_questions: list[str] = []
    summary: str = ""

technical system component“technical system component”technical system component。technical system component Schema technical system component。

8. Prompt technical system component

Prompt technical system component，technical system component：

• prompt_id technical system component；
• technical system component；
• technical system component Schema technical system component；
• technical system component；
• technical system component；
• technical system component、technical system component。

technical system component：

1. technical system component 30–100 technical system component；
2. technical system component；
3. technical system component、technical system component、technical system component、technical system component；
4. technical system component；
5. technical system component。

Anthropic technical system component Prompt technical system component“technical system component”technical system component Prompt technical system component，technical system component Prompt technical system component Eval technical system component，technical system component。technical system component Prompt engineering overview。

9. technical system component Prompt

🔥 P0 High-Frequency Must-Know: Prompt、RAG、Fine-tuning technical system component？
Prompt technical system component；RAG technical system component；Fine-tuning technical system component、technical system component。technical system component RAG，technical system component。

10. technical system component

• technical system component、technical system component、technical system component；
• technical system component，technical system component；
• technical system component；
• technical system component，technical system component。

technical system component“technical system component”。technical system component、technical system component。

11. technical system component

technical system component A：technical system component

technical system component，technical system component 40 technical system component，technical system component 10 technical system component/technical system component。technical system component Pydantic technical system component。

technical system component：technical system component、JSON technical system component、technical system component、technical system component Token。

technical system component B：technical system component

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technical system component C：Prompt technical system component

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12. technical system component

🔥 P0：Prompt Engineering technical system component Context Engineering technical system component？

Prompt Engineering technical system component、technical system component；Context Engineering technical system component，technical system component、technical system component、technical system component、technical system component、technical system component Token technical system component。technical system component。

🔥 P0：technical system component？

technical system component；technical system component；technical system component；technical system component；technical system component Token technical system component；technical system component。technical system component。

🔥 P0：technical system component？

technical system component；technical system component；technical system component Schema；technical system component；technical system component；technical system component；technical system component；technical system component。

⭐ P1：technical system component confidence technical system component？

technical system component。technical system component，technical system component；technical system component。

⭐ P1：technical system component“technical system component”technical system component？

technical system component Token、technical system component，technical system component。technical system component、technical system component，technical system component、technical system component；technical system component。

13. technical system component

• technical system component Prompt technical system component；
• technical system component Schema technical system component；
• technical system component；
• technical system component Prompt、RAG、Tool technical system component Fine-tuning technical system component；
• technical system component Prompt technical system component。