casekit

Agentic-first case conversion service. Convert between camelCase, PascalCase, snake_case, SCREAMING_SNAKE_CASE, kebab-case, SCREAMING-KEBAB-CASE, dot.case, Title Case, Sentence case, flatcase, Train-Case, alternating case, and inverse case. Detect case, convert to all formats at once. Plain text API, agent-driven, single Go binary.

Quick Start

# Build
make build

# Run (defaults to :7101)
./casekit

# Use it
curl "http://localhost:7101/convert?text=hello_world&to=camel"
# camel=helloWorld

curl "http://localhost:7101/detect?text=helloWorld"
# detected=camel name=camelCase

curl "http://localhost:7101/all?text=helloWorld"
# camel=helloWorld
# pascal=HelloWorld
# snake=hello_world
# screaming_snake=HELLO_WORLD
# kebab=hello-world
# ...

curl "http://localhost:7101/snake?text=helloWorld"
# snake=hello_world

Principles

• The agent IS the interface — No UI, no SDK. The API is the product.
• Plain text by default — One labeled, grepable line per record. JSON on demand via Accept: application/json or ?format=json.
• Instructive errors — Every 4xx includes a hint telling the agent what to do next.
• Self-documenting — GET /help returns a one-page operating manual.
• Single static binary — Go, CGO_ENABLED=0, zero external dependencies.
• Zero config defaults — Runs out of the box. Config: defaults < env < flags.
• MCP connector — Speaks Model Context Protocol at POST /mcp.

API Reference

Core Endpoints

Method	Path	Params	Description
GET	/convert	text, to	Convert text to a specific case
GET	/detect	text	Detect the case type of input text
GET	/all	text	Convert to all supported case formats

Individual Case Endpoints

Method	Path	Params	Output Format
GET	/camel	text	camelCase
GET	/pascal	text	PascalCase
GET	/snake	text	snake_case
GET	/screaming-snake	text	SCREAMING_SNAKE_CASE
GET	/kebab	text	kebab-case
GET	/screaming-kebab	text	SCREAMING-KEBAB-CASE
GET	/dot	text	dot.case
GET	/title	text	Title Case
GET	/sentence	text	Sentence case
GET	/flat	text	flatcase
GET	/train	text	Train-Case
GET	/alternating	text	aLtErNaTiNg
GET	/inverse	text	swap case

Supported Case Formats

Case	Example	Description
camel	helloWorld	First word lowercase, rest capitalized
pascal	HelloWorld	All words capitalized
snake	hello_world	Lowercase, underscore separator
screaming_snake	HELLO_WORLD	Uppercase, underscore separator
kebab	hello-world	Lowercase, hyphen separator
screaming_kebab	HELLO-WORLD	Uppercase, hyphen separator
dot	hello.world	Lowercase, dot separator
title	Hello World	All words capitalized, space separator
sentence	Hello world	First word capitalized, space separator
flat	helloworld	All lowercase, no separator
train	Hello-World	All words capitalized, hyphen separator
alternating	hElLo	Alternating lower/upper per character
inverse	hELLOwORLD	Swap case of each character

MCP

POST /mcp — JSON-RPC 2.0 endpoint with 16 tools for chat client integrations.

Configuration

Source	Key	Default	Description
Flag	-addr	:7101	Listen address
Flag	-secret	(random)	Auth token signing secret
Env	CASEKIT_ADDR	:7101	Listen address
Env	CASEKIT_SECRET	(random)	Auth token signing secret

Build

make build    # CGO_ENABLED=0 go build -trimpath ./cmd/casekit
make test     # go test -race ./...
make vet      # go vet ./...

No database needed. Pure stateless computation. Single Go binary.

License

MIT