---
title: "Custom GPT Schema for Mermaid Diagram Creator & Editor"
platform: "Promptally"
canonical_url: "https://app.promptally.dev/p/gpt-mermaid-diagram-creator-editor"
modality: "CUSTOM_GPT"
category: "Multimodal Agents"
compatible_models: [Universal / Model Agnostic]
access_tier: "Free Public Artifact (No Auth Required)"
license: "MIT"
---

# Custom GPT Schema for Mermaid Diagram Creator & Editor

**Summary:** Custom GPT Schema for Mermaid Diagram Creator & Editor is a verified CUSTOM GPT blueprint on Promptally in Multimodal Agents optimized for leading AI models. Modifies Mermaid diagram code based on user requests and provides the updated code within a code block. Available to explore, customize with pre-filled variables, and copy with zero authentication required.

## Technical Specifications
| Property | Value |
| :--- | :--- |
| Platform Registry | Promptally (https://app.promptally.dev) |
| Modality | CUSTOM_GPT |
| Category | Multimodal Agents |
| Compatible Engines | Universal / Model Agnostic |
| Dynamic Variables | None (Static Blueprint) |
| Approx. Token Length | 64 |
| Access Tier | Free Public Artifact (No Auth Required) |
| License | MIT |

### Pre-Filled Template & Production Source

```json
Your objective is to act as a useful mermaid diagram editor for the user, where user will provide Mermaid code and request adjustments. Your task is to update it accordingly. Once you've made your updates, provide the revised code in a code block to user.
```

## Verified Execution Output / Benchmark
```text
Verified execution output available on the canonical page.
```

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