Parsing uses deterministic rules that preserve field and type boundaries.
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Prompt tools
Prompt Boundary & Delimiter Builder
Wraps user or RAG text in generated delimiters and produces a template that tells a model to treat enclosed content as data, with allowed and forbidden behavior. It does not stop prompt injection by itself.
✓ Free✓ No account✓ In-browser
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What does this tool do?
Build explicit data boundaries that separate untrusted content from instructions.
APPLICATION AND DECISION GUIDE
Prompt Boundary & Delimiter Builder: method and usage
Wraps user or RAG text in generated delimiters and produces a template that tells a model to treat enclosed content as data, with allowed and forbidden behavior. It does not stop prompt injection by itself.
INI or properties text with valid sections, keys, and values Confirm the shape first with a small example containing no personal data.
a parsed structure, field metrics, and explicit syntax findings
Practical steps
- Paste the content to process.
- Generate the local template and review its boundaries.
- Test separately with role separation and allowlists on the real model.
field names, value types, escaping, and empty or null values compared with the source
Rule-based review does not prove real model behavior; retest with representative cases.
Suitable use cases
- Separating RAG content from instructions
- Isolating user text as data
- Standardizing prompt reviews
LEARN THE WORKFLOW
Guides for this tool
A Reliable AI Workflow with Prompt Boundaries, Structured Output, and Red-Teaming
Separate untrusted data from instructions, define a JSON output contract, and test the model with evidence-driven cases before release.
Read guide →What Is a Meta Prompt and How Do You Use One?
Turn one-off instructions into repeatable workflows with a practical meta-prompt structure.
Read guide →ABOUT THIS TOOL
Frequently asked questions
What input does Prompt Boundary & Delimiter Builder accept?+
INI or properties text with valid sections, keys, and values Paste the content to process.
What does Prompt Boundary & Delimiter Builder return?+
a parsed structure, field metrics, and explicit syntax findings Parsing uses deterministic rules that preserve field and type boundaries.
How should I validate Prompt Boundary & Delimiter Builder output?+
field names, value types, escaping, and empty or null values compared with the source
Does Prompt Boundary & Delimiter Builder send or store input on a server?+
Tool input is processed in the active tab. Saving to the Workstation or transferring to another tool is a separate choice. Consider browser extensions and shared devices separately; the privacy page explains advertising and network connections.