64 REST APIs for apps, CI pipelines, and agent runtimes. Clear contracts, OpenAPI coverage, and instant access — no auth required.
Rate limits: 50 requests/day per IP, 10 requests/10s burst. No authentication required. All responses include X-RateLimit-* headers.
Agent integrations
OpenAPI spec, skills bundles, WebMCP manifest, and runtime endpoint — all integration surfaces in one place.
OpenAPI spec
Unified OpenAPI specification covering all runtime and dedicated API endpoints.
Count tokens and estimate costs across 30+ AI models using live pricing data.
aidevhub.io/api/token-counter/
Validate tool schemas against OpenAI, Anthropic, MCP, and OpenAPI provider rules.
aidevhub.io/api/schema-validator/
Infer JSON schemas from example data for OpenAI, Anthropic, MCP, or generic use.
aidevhub.io/api/schema-generator/
Detect data formats and convert between JSON, CSV, XML, YAML, TOML, and more.
aidevhub.io/api/format-detective/
Compare text, JSON, or YAML with structured change tracking.
aidevhub.io/api/structured-diff/
Parse, validate, and build cron expressions with human-readable descriptions.
aidevhub.io/api/cron-expression/
Test regex patterns with match extraction and explanation.
aidevhub.io/api/regex-tester/
Generate QR codes in SVG or PNG format.
aidevhub.io/api/qr-code/
Generate color palettes and convert between hex, RGB, and HSL.
aidevhub.io/api/color-palette/
Convert between HTML and Markdown.
aidevhub.io/api/html-markdown/
54 additional tools with dedicated REST API endpoints at /api/{slug}/. GET + POST, JSON response, CORS enabled.
.gitignore Generator
/api/gitignore-generator/
API Header Builder & cURL Generator
/api/api-header-builder/
API Key Generator
/api/api-key-generator/
API Response Mocker
/api/api-response-mocker/
ASCII Art Generator
/api/ascii-art-generator/
Byte & Data Unit Converter
/api/byte-converter/
Changelog Generator
/api/changelog-generator/
chmod Calculator
/api/chmod-calculator/
Color Contrast Checker
/api/color-contrast-checker/
CORS Debugger
/api/cors-debugger/
CSS Specificity Calculator
/api/css-specificity-calculator/
CSS Units Converter
/api/css-units-converter/
CSV ↔ JSON Converter
/api/csv-json/
cURL Converter
/api/curl-converter/
DNS Lookup Parser
/api/dns-lookup/
Docker Compose Validator
/api/docker-compose-validator/
Dockerfile Generator
/api/dockerfile-generator/
ENV File Validator
/api/env-file-validator/
GraphQL Query Builder
/api/graphql-query-builder/
HTML Formatter & Viewer
/api/html-formatter/
HTML to JSX Converter
/api/html-to-jsx/
HTTP Cookie Builder
/api/http-cookie-builder/
HTTP Header Inspector
/api/http-header-inspector/
IP & Subnet Calculator
/api/subnet-calculator/
JSON Patch Builder
/api/json-patch-builder/
JSON to Go Struct
/api/json-to-go/
JSON to Kotlin Data Class
/api/json-to-kotlin/
JSON to Python Dataclass
/api/json-to-python/
JSON to Rust Serde
/api/json-to-rust-serde/
JSON to TypeScript Converter
/api/json-to-typescript/
JSON to Zod Schema
/api/json-to-zod/
JWT Decoder & Inspector
/api/jwt-decoder/
Log Parser & Highlighter
/api/log-parser/
Number Base Converter
/api/number-base-converter/
OAuth Playground
/api/oauth-playground/
OpenAPI Changelog Generator
/api/openapi-changelog/
OpenAPI to TypeScript Generator
/api/openapi-to-typescript/
Package.json Generator
/api/package-json-generator/
Password Generator
/api/password-generator/
Rate Limit Calculator
/api/rate-limit-calculator/
README Generator
/api/readme-generator/
RSS Feed Validator
/api/rss-feed-validator/
Semver Calculator
/api/semver-calculator/
Shell Command Explainer
/api/shell-command-explainer/
SQL Formatter & Beautifier
/api/sql-formatter/
SSL Certificate Checker
/api/ssl-checker/
Text Case Converter
/api/text-case-converter/
Unix Timestamp Converter
/api/timestamp-converter/
URL Metadata Extractor
/api/url-metadata-extractor/
UUID Generator
/api/uuid-generator/
Web-to-Markdown Converter
/api/web-to-markdown/
Website Tech Stack Detector
/api/tech-stack-detector/
XML Formatter & Viewer
/api/xml-formatter/
YAML ↔ JSON Converter
/api/yaml-json/
Machine-readable catalog: /api/apis.json
| OpenAPI specs linked from each API's /openapi.yaml endpoint.