Code Station
THE STATIONS5 tools

AI & Prompt Engineering Station

Count tokens across LLM models, repair malformed JSON, interpolate prompts, calculate vector similarity, and build system prompts client-side.

AI prompt construction, token estimation, and vector calculations run entirely in your browser with zero server uploads or external LLM API calls.

AI & Prompt Engineering tools

5 of 5 tools

AI & Prompt Engineering

AI Token Counter & Visualizer

AI Token Counter & Visualizer: text or prompt to tokenize, target model family, input price ($/1m tokens), output price ($/1m tokens) → total token count, visual token boundaries, estimated api cost, character & word statistics. Process locally in your browser.

AI & Prompt Engineering

LLM JSON Repair & Validator

LLM JSON Repair & Validator: malformed llm json text, output indentation → repaired valid json, side-by-side diff view, applied syntax repairs summary, rfc-8259 validation status. Process locally in your browser.

AI & Prompt Engineering

Prompt Template Interpolator

Prompt Template Interpolator: prompt template with {{variable}} or {variable}, test records dataset (json array), export format → interpolated prompt, role-formatted messages (system, user, assistant), batch dataset preview, openai & anthropic json export. Process locally in your browser.

AI & Prompt Engineering

Vector Similarity & Distance Calculator

Vector Similarity & Distance Calculator: vector a (json array, comma or space-separated numbers), vector b (json array, comma or space-separated numbers), primary metric → cosine similarity & percentage match, euclidean distance (l2), dot product, manhattan distance (l1), dimensional contribution breakdown. Process locally in your browser.

AI & Prompt Engineering

System Prompt Pattern Builder

System Prompt Pattern Builder: agent role & persona, core task & instructions, tone & style, xml tag wrapping → assembled system prompt, live token & character counters, role guardrails & constraints, copy & download export. Process locally in your browser.

KEEP EXPLORING
WebPKI & Advanced Cryptography

Generate RSA keys, perform AES-GCM encryption, inspect CSR requests, sign and verify JWTs, and build CSP headers locally using Web Crypto.

5 toolsExplore
Text

Count, transform, generate, compare, and inspect text locally in your browser.

31 toolsExplore
JSON & Data

Format, validate, compare, transform, and inspect structured data locally in your browser.

46 toolsExplore
Code Generation

Generate TypeScript types, Zod schemas, Go structs, Python Pydantic models, Rust Serde structs, and React JSX components locally.

8 toolsExplore