XML structuring
Automatic <context>, <instructions>, <example>, and <output_format> tagging.
Build XML-tagged prompts that Claude Sonnet, Opus, and Haiku actually follow. Reliable structure, repeatable output.
Free plan available · No credit card required
Automatic <context>, <instructions>, <example>, and <output_format> tagging.
Best-practice scaffolds from Anthropic's prompt engineering guidance, built in.
Add reference examples that Claude follows precisely — no more drift.
One-click conversion from OpenAI or Gemini prompts into Claude format.
Save Claude prompts to your library and fork variants for different tasks.
Pipe Claude outputs into downstream Claude or OpenAI steps.
Leverage Claude's huge context for legal, medical, and technical research.
Summarize, extract, and classify long documents with high accuracy.
Use Claude's reasoning for thorough code review with structured findings.
Build support agents with strict tone, policy, and escalation rules.
Tell us what you want Claude to do — plain English.
InstructFlow AI builds the tagged prompt with examples and constraints.
Reuse the prompt across workflows or share it publicly.
Join builders using InstructFlow AI to optimize prompts, chain steps, and share reusable workflows.
A tool that structures prompts using Claude's preferred XML tags (<context>, <instructions>, <example>) so Anthropic models follow your intent more reliably.
All current Anthropic models including Claude Sonnet 4.5, Opus 4, and Haiku — plus legacy 3.5 variants.
Anthropic recommends XML tagging because Claude is trained to respect it. Structured prompts produce dramatically more consistent output than plain text.
Yes. Paste your existing prompt and InstructFlow AI rewrites it in Claude's preferred structure.
Rewrite ChatGPT prompts for clarity, structure, and reliable output.
Design multi-step AI workflows visually with chained prompts.
Outbound, follow-up, and proposal workflows for revenue teams.
Source, screen, and outreach prompts for talent teams.
From idea to hook to script to thumbnail in one chained flow.
Cut tokens without losing intent — slash AI costs at scale.