git:20260612.8db3bb9 to git:20261105.00a79ff

# LLM Prompts Module

## Overview

The `infrastructure/llm/prompts/` directory contains the prompt engineering system for the Large Language Model infrastructure. This module provides structured, reusable prompt templates, composition logic, and fragment management to ensure consistent, high-quality LLM interactions across the research template system.

## Directory Structure

```mermaid

flowchart TB

PR[infrastructure/llm/prompts/]

PR --> META[AGENTS.md · __init__.py]

PR --> COMP[composer.py<br/>Prompt composition &amp; assembly]

PR --> LOAD[loader.py<br/>Prompt loading &amp; validation]

PR --> CMP_DIR[compositions<br/>Pre-built prompt compositions]

PR --> FRAG[fragments<br/>Reusable prompt components]

PR --> TPL[templates<br/>Prompt templates]

CMP_DIR --> CMP_F[retry_prompts.json<br/>error recovery]

FRAG --> FRAG_F[content_requirements.json · format_requirements.json ·<br/>section_structures.json · system_prompts.json ·<br/>token_budget_awareness.json · validation_hints.json]

TPL --> TPL_F[manuscript_reviews.json · paper_summarization.json]

classDef d fill:#0f172a,stroke:#0f172a,color:#fff

classDef pkg fill:#1e3a8a,stroke:#0f172a,color:#fff

classDef code fill:#0f766e,stroke:#0f172a,color:#fff

class PR d

class CMP_DIR,FRAG,TPL pkg

class META,COMP,LOAD,CMP_F,FRAG_F,TPL_F code

```

## Key Components

### Prompt Composition (`composer.py`)

**Dynamic prompt assembly from modular components:**

#### Prompt Composer Engine

**Modular Prompt Assembly:**

```python

class PromptComposer:

"""Assembles prompts from modular components."""

def __init__(self, fragments_dir: Path = None):

self.fragments_dir = fragments_dir or Path(__file__).parent / "fragments"

self.templates_dir = fragments_dir.parent / "templates"

self._fragments_cache = {}

"""Compose a prompt from template and variables.

Process:

1. Load template structure

2. Substitute variables

3. Apply fragment insertions

4. Validate final prompt

5. Optimize for token usage

Args:

template_name: Name of template to use

variables: Variables to substitute in template

options: Composition options

Returns:

assembled prompt

"""

```

**Template Loading and Processing:**

```python

def _load_template(self, template_name: str) -> Dict[str, Any]:

"""Load template configuration from templates directory."""

template_path = self.templates_dir / f"{template_name}.json"

if not template_path.exists():

raise PromptError(f"Template not found: {template_name}")

template = json.load(f)

# Validate template structure

self._validate_template_structure(template)

return template

```

#### Fragment Integration

**Dynamic Fragment Insertion:**

```python

def _apply_fragments(self, prompt_parts: List[str], context: Dict[str, Any]) -> List[str]:

"""Apply fragment insertions based on context."""

enhanced_parts = []

for part in prompt_parts:

# Check for fragment placeholders

if "{{" in part and "}}" in part:

# Extract fragment references

fragments = self._extract_fragment_references(part)

# Load and insert fragments

for fragment_name in fragments:

fragment_content = self._load_fragment(fragment_name)

part = part.replace(f"{{{{{fragment_name}}}}}", fragment_content)

enhanced_parts.append(part)

return enhanced_parts

```

#### Variable Substitution

**Advanced Variable Processing:**

```python

"""Substitute variables in template parts with advanced processing."""

processed_parts = []

for part in template_parts:

# Standard string substitution

processed = part.format(**variables)

# Advanced processing for special variable types

processed = self._process_special_variables(processed, variables)

# Content validation

processed = self._validate_content(processed, variables)

processed_parts.append(processed)

return processed_parts

```

### Prompt Loading (`loader.py`)

**Template and fragment loading with validation:**

#### Template Management

**Template Discovery and Loading:**

```python

class PromptLoader:

"""Loads and validates prompt templates and fragments."""

def __init__(self, prompts_dir: Path = None):

self.prompts_dir = prompts_dir or Path(__file__).parent

self._template_cache = {}

self._fragment_cache = {}

def load_template(self, name: str, validate: bool = True) -> Dict[str, Any]:

"""Load template with optional validation."""

if name in self._template_cache:

return self._template_cache[name]

template_path = self.prompts_dir / "templates" / f"{name}.json"

if not template_path.exists():

raise FileNotFoundError(f"Template not found: {name}")

template = json.load(f)

if validate:

self.validate_template(template)

self._template_cache[name] = template

return template

def load_fragment(self, name: str) -> str:

"""Load reusable prompt fragment."""

if name in self._fragment_cache:

return self._fragment_cache[name]

fragment_path = self.prompts_dir / "fragments" / f"{name}.json"

if not fragment_path.exists():

raise FileNotFoundError(f"Fragment not found: {name}")

fragment_data = json.load(f)

# Extract content (fragments are simple content dictionaries)

if not content:

raise ValueError(f"Invalid fragment format: {name}")

self._fragment_cache[name] = content

return content

```

#### Template Validation

**Template Validation:**

```python

def validate_template(self, template: Dict[str, Any]) -> None:

"""Validate template structure and content."""

for field in required_fields:

if field not in template:

raise ValidationError(f"Missing required field: {field}")

# Validate parts structure

raise ValidationError("Template parts must be a list")

if not isinstance(part, dict):

raise ValidationError(f"Part {i} must be a dictionary")

raise ValidationError(f"Part {i} missing 'type' field")

raise ValidationError(f"Invalid part type: {part['type']}")

# Validate variables

```

### Fragment Components

#### Content Requirements (`fragments/content_requirements.json`)

**Quality and completeness requirements:**

```json

{

"content": "Ensure your response demonstrates:\n- Deep understanding of the subject matter\n- Clear and logical reasoning\n- Evidence-based conclusions\n- Appropriate level of technical detail\n- coverage of key aspects\n- Balanced perspective on limitations and assumptions"

}

```

#### Format Requirements (`fragments/format_requirements.json`)

**Output structure and formatting standards:**

```json

{

"content": "Format your response using:\n- Clear section headers and subheaders\n- Bullet points for lists and key items\n- Numbered steps for procedures\n- Code blocks for technical content\n- Tables for comparative data\n- Consistent terminology and notation"

}

```

#### System Prompts (`fragments/system_prompts.json`)

**Role definition and behavioral guidelines:**

```json

{

"content": "You are an expert research assistant specializing in academic writing and scientific analysis. Your responses should be:\n- Accurate and evidence-based\n- Clear and accessible to educated readers\n- Methodologically sound\n- Ethically responsible\n- Critically thoughtful"

}

```

## Integration with LLM System

### Template-Based Review Generation

**Review Template Usage:**

```python

from infrastructure.llm.prompts import PromptComposer

# Initialize composer

composer = PromptComposer()

# Compose manuscript review prompt

variables = {

}

# Use with LLM client

from infrastructure.llm.core import LLMClient

client = LLMClient()

response = client.query_structured(review_prompt, schema=review_schema)

```

### Summarization Template Usage

**Paper Summarization:**

```python

# Compose paper summarization prompt

summarization_vars = {

}

# Generate summary

summary = client.query(summary_prompt, options=GenerationOptions(max_tokens=600))

```

## Fragment System Architecture

### Fragment Types

**System-Level Fragments:**

- **system_prompts**: Define AI role and behavioral guidelines

- **content_requirements**: Quality and completeness standards

- **format_requirements**: Output structure specifications

**Task-Specific Fragments:**

- **section_structures**: Document organization templates

- **validation_hints**: Input validation guidance

- **token_budget_awareness**: Token usage optimization

### Fragment Composition Rules

**Fragment Assembly Logic:**

```python

def _compose_fragments(self, fragment_names: List[str]) -> str:

"""Compose multiple fragments with proper separation."""

composed = []

for name in fragment_names:

fragment = self._load_fragment(name)

# Add separator if not first fragment

if composed:

composed.append("\n\n")

composed.append(fragment)

return "".join(composed)

```

## Template Structure

### Template Schema

**Standard Template Format:**

```json

{

"name": "manuscript_reviews",

"description": "manuscript review template",

"version": "1.0",

"variables": {

"manuscript_content": {

"type": "string",

"required": true,

"description": "Full manuscript text to review"

},

"review_type": {

"type": "string",

"required": false,

"default": "comprehensive",

"enum": ["comprehensive", "technical", "editorial"]

}

},

"parts": [

{

"type": "instruction",

"content": "You are conducting a {{review_type}} review of an academic manuscript."

},

{

"type": "fragment",

"content": "{{system_prompts}}"

},

{

"type": "context",

"content": "Manuscript content:\n{{manuscript_content}}"

},

{

"type": "instruction",

"content": "Provide detailed feedback following these requirements:\n{{content_requirements}}"

},

{

"type": "fragment",

"content": "{{format_requirements}}"

}

]

}

```

## Testing

### Template Validation Testing

**Template Structure Tests:**

```python

def test_template_validation():

"""Test template loading and validation."""

loader = PromptLoader()

# Test valid template

# Test invalid template

with pytest.raises(ValidationError):

def test_fragment_loading():

"""Test fragment loading functionality."""

loader = PromptLoader()

# Test existing fragment

assert isinstance(content, str)

assert len(content) > 0

# Test non-existent fragment

with pytest.raises(FileNotFoundError):

```

### Composition Testing

**Prompt Assembly Tests:**

```python

def test_prompt_composition():

"""Test prompt composition workflow."""

composer = PromptComposer()

# Compose prompt

# Verify composition

assert isinstance(prompt, str)

assert len(prompt) > 0

# Verify fragment insertion

```

**Variable Substitution Tests:**

```python

def test_variable_substitution():

"""Test variable substitution in templates."""

composer = PromptComposer()

# Test simple substitution

template_parts = ["Review type: {review_type}", "Content: {content}"]

result = composer._substitute_variables(template_parts, variables)

assert result[0] == "Review type:"

assert result[1] == "Content: test content"

```

## Performance Considerations

### Template Caching

**Efficient Template Loading:**

```python

def _get_cached_template(self, name: str) -> Dict[str, Any]:

"""Get template from cache or load from disk."""

if name not in self._template_cache:

self._template_cache[name] = self._load_template_from_disk(name)

return self._template_cache[name]

```

**Fragment Caching:**

```python

def _get_cached_fragment(self, name: str) -> str:

"""Get fragment from cache or load from disk."""

if name not in self._fragment_cache:

self._fragment_cache[name] = self._load_fragment_from_disk(name)

return self._fragment_cache[name]

```

### Token Optimization

**Prompt Size Management:**

```python

def _optimize_prompt_size(self, prompt: str, max_tokens: int = None) -> str:

"""Optimize prompt size for token limits."""

if not max_tokens:

return prompt

# Estimate token count

estimated_tokens = self._estimate_token_count(prompt)

if estimated_tokens <= max_tokens:

return prompt

# Truncate with intelligent chunking

return self._truncate_with_context(prompt, max_tokens)

```

## Error Handling

### Template Validation Errors

**Validation:**

```python

def _validate_template_structure(self, template: Dict[str, Any]) -> None:

"""Validate template structure."""

# Required fields

missing = [field for field in required if field not in template]

if missing:

raise TemplateValidationError(f"Missing required fields: {missing}")

# Parts validation

raise TemplateValidationError("Parts must be a list")

self._validate_part(part, i)

# Variables validation

raise TemplateValidationError("Variables must be a dictionary")

```

### Fragment Loading Errors

**Robust Fragment Handling:**

```python

def _load_fragment_safely(self, name: str) -> str:

"""Load fragment with error handling."""

try:

return self._load_fragment_from_disk(name)

except FileNotFoundError:

logger.warning(f"Fragment not found: {name}")

return f"[Fragment '{name}' not found]"

except json.JSONDecodeError as e:

logger.error(f"Invalid JSON in fragment {name}: {e}")

return f"[Invalid fragment '{name}']"

except Exception as e:

logger.error(f"Error loading fragment {name}: {e}")

return f"[Error loading fragment '{name}']"

```

## Usage Examples

### Basic Template Usage

**Simple Prompt Composition:**

```python

from infrastructure.llm.prompts import PromptComposer

composer = PromptComposer()

# Basic review prompt

```

### Advanced Composition

**Custom Fragment Integration:**

```python

# Load specific fragments

composer = PromptComposer()

# Custom composition with specific fragments

variables = {

}

```

### Template Development

**Creating New Templates:**

```python

# Template creation workflow

template_data = {

}

# Save template

import json

json.dump(template_data, f, indent=2)

```

## Configuration

### Directory Configuration

**Custom Prompt Directories:**

```python

# Use custom prompt directory

# Or set via environment

import os

```

### Template Search Paths

**Multiple Template Sources:**

```python

def _find_template_path(self, name: str) -> Path:

"""Find template in configured search paths."""

for path in search_paths:

template_path = path / f"{name}.json"

if template_path.exists():

return template_path

raise FileNotFoundError(f"Template not found: {name}")

```

## Future Enhancements

### Advanced Features

**Planned Improvements:**

- **Template Inheritance**: Base templates with overrides

- **Dynamic Fragment Selection**: Context-aware fragment insertion

- **Template Versioning**: Version management and migration

- **Performance Profiling**: Template composition timing analysis

**Integration Features:**

- **Hot Reloading**: Runtime template updates without restart

- **Template Marketplace**: Shared template repository

- **Collaborative Editing**: Multi-user template development

- **A/B Testing**: Template performance comparison

## Troubleshooting

### Common Template Issues

**Template Not Found:**

```python

# Check template directory

prompts_dir = Path(__file__).parent

templates_dir = prompts_dir / "templates"

print(f"Templates directory: {templates_dir}")

print(f"Contents: {list(templates_dir.glob('*.json'))}")

# Verify template exists

template_path = templates_dir / "manuscript_reviews.json"

print(f"Template exists: {template_path.exists()}")

```

**Fragment Loading Errors:**

```python

# Check fragment structure

import json

fragment_path = prompts_dir / "fragments" / "system_prompts.json"

with open(fragment_path) as f:

fragment = json.load(f)

print(f"Fragment structure: {fragment.keys()}")

```

**Variable Substitution Issues:**

```python

# Debug variable substitution

template_parts = ["Review: {content}", "Type: {review_type}"]

try:

result = composer._substitute_variables(template_parts, variables)

print(f"Substitution successful: {result}")

except KeyError as e:

print(f"Missing variable: {e}")

except Exception as e:

print(f"Substitution error: {e}")

```

### Performance Debugging

**Composition Timing:**

```python

import time

start_time = time.time()

end_time = time.time()

print(f"Composition time: {end_time - start_time:.3f} seconds")

print(f"Prompt length: {len(prompt)} characters")

```

## See Also

**Related Documentation:**

- [`../core/AGENTS.md`](../core/AGENTS.md) - LLM core functionality

- [`../templates/AGENTS.md`](../templates/AGENTS.md) - Template system

- [`../review/AGENTS.md`](../review/AGENTS.md) - Review generation

**System Documentation:**

- [`../../../AGENTS.md`](../../../AGENTS.md) - system overview

- [`../../../docs/development/contributing.md`](../../../docs/development/contributing.md) - Template development guide