Parameterized prompt templates using Jinja2 patterns for reusable, dynamic agent prompts
Scanned 9/12/2026
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npx -y skills add baekenough/second-brain --skill jinja2-prompts --agent claude-codeInstalls into .claude/skills of the current project.
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---
name: jinja2-prompts
description: Parameterized prompt templates using Jinja2 patterns for reusable, dynamic agent prompts
scope: core
user-invocable: false
---
# Jinja2 Prompt Templates
## Purpose
Define reusable, parameterized prompt templates for agent tasks. Templates enable consistent prompt formatting across workflows while allowing dynamic content injection.
## Template Syntax
Use Jinja2-style variable interpolation in prompt strings:
```
{{ variable }} — Variable substitution
{% if condition %}...{% endif %} — Conditional sections
{% for item in list %}...{% endfor %} — Iteration
{{ variable | default("fallback") }} — Default values
```
## Security Rules
- Templates MUST be author-written (stored in skill files), never user-supplied
- Use `SandboxedEnvironment` (NOT `Environment` or `from_string()` directly)
- No access to `env()`, `os`, `subprocess`, or any system functions
- Variable allowlist: only explicitly provided context variables are accessible
- NEVER render user-controlled strings as templates — treat them as plain data
## Template Locations
```
.claude/skills/<skill-name>/templates/
├── analysis.md.j2
├── report.md.j2
└── triage.md.j2
```
## Usage Pattern
```yaml
# In skill or workflow definition
template: analysis.md.j2
variables:
target: "{{ repository_url }}"
scope: "security"
depth: "comprehensive"
```
Rendered by orchestrator before passing to agent as prompt.
## Common Templates
### Research Team Prompt
```
Role: {{ domain }} {{ role }} analyst
Scope: {{ topic }}
Tasks:
{% for task in tasks %}
{{ loop.index }}. {{ task }}
{% endfor %}
Output format:
{{ output_format }}
```
### CVE Triage Prompt
```
Analyze {{ cve_id }} ({{ cwe_classification }})
Affected component: {{ component }} {{ version_range }}
{% if existing_mitigations %}
Known mitigations: {{ existing_mitigations }}
{% endif %}
```
## Integration
- Used by `/research` skill for team prompt generation
- Used by `cve-triage` skill for standardized analysis prompts
- Compatible with DAG orchestration node prompts
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