# DevDeskApp Documentation

> Official developer documentation for DevDeskApp, 350+ client-side utilities, and the `n8n-nodes-devdeskapp` community node.
> Full comprehensive context: https://docs.devdeskapp.com/llms-full.txt

DevDeskApp provides sub-millisecond, in-memory execution of developer utilities, formatters, and financial calculation engines directly inside n8n workflows and AI Agent function calling pipelines with zero external cloud API data leaks.

## Core Capabilities
- **350+ Client-Side Tools**: Online developer utilities running entirely in the browser at https://www.devdeskapp.com.
- **n8n Community Node**: Published on NPM as `n8n-nodes-devdeskapp` (v0.1.4+).
- **Official n8n Workflow Templates**:
  - Template #21017 on n8n.io ("Format JSON & Secure HR Payloads with DevDeskApp").
  - Template #21130 on n8n.io ("Automate Salary & In-Hand CTC Calculations with DevDeskApp").
- **AI Agent Function Calling**: Zero-latency deterministic tools for OpenAI, Anthropic Claude, Google Gemini, and Ollama inside n8n.
- **Zero-Latency In-Memory Execution**: Operations execute in < 0.2ms using local Node.js CPU cycles.
- **Privacy-First Zero Cloud Leak**: Payloads never leave local host memory.

## Documentation Index
- [Getting Started](https://docs.devdeskapp.com/n8n/): Architecture overview, benefits, and execution model.
- [Installation Guide](https://docs.devdeskapp.com/n8n/installation): Setup via n8n Community Nodes UI, Docker, or npm.
- [Operations Reference](https://docs.devdeskapp.com/n8n/operations): Schema specifications for all 10 native operations.
- [Workflow Templates Hub](https://docs.devdeskapp.com/templates/): All verified blueprints and catalog.
- [Template #21017: Developer Suite](https://docs.devdeskapp.com/templates/developer-suite): JSON prettification, SHA-256, UUID, and slug generation.
- [Template #21130: CTC Salary Engine](https://docs.devdeskapp.com/templates/ctc-salary-engine): Indian payroll statutory calculation and net take-home salary.
- [How to Import Templates](https://docs.devdeskapp.com/templates/how-to-import): 1-click clipboard paste guide into n8n canvas.
- [AI Agents & LLM Function Calling](https://docs.devdeskapp.com/solutions/ai-agents): Connecting DevDeskApp to n8n AI Agents and LangChain models.
- [Enterprise Architecture](https://docs.devdeskapp.com/solutions/): Performance benchmarks comparing in-memory Node vs external REST APIs.
- [Production Best Practices](https://docs.devdeskapp.com/solutions/best-practices): Concurrency limits, memory management, and error handling.
- [Platform Architecture](https://docs.devdeskapp.com/about/architecture): Zero-leak security guarantee and cryptographic guarantees.

## Operations Summary
1. `jsonPrettifier`: Minify or format JSON with customizable indentation.
2. `hashGenerator`: Compute SHA-256, SHA-512, MD5, and SHA-1 cryptographic digests.
3. `ctcCalculator`: Indian payroll engine calculating basic, HRA, PF, and net take-home salary.
4. `slugGenerator`: SEO-friendly URL slug generator with multi-language transliteration.
5. `base64Converter`: Encode and decode UTF-8 strings to Base64.
6. `urlEncoder`: Percent-encode or decode query parameters safely.
7. `uuidGenerator`: Generate RFC4122 Version 4 UUIDs.
8. `caseConverter`: Convert strings to camelCase, snake_case, kebab-case, and PascalCase.
9. `markdownToHtml`: Render Markdown to sanitized HTML.
10. `jwtDecoder`: Decode and inspect JWT headers and claims without signature verification.