# Universal AI-Agent API & Data Hub (5045 endpoints, no API key, MCP + REST)

> Live public data and deterministic tools for AI agents. No signup, no key.
> Free: 1000 calls/day per IP. Every response states its source, license and data_freshness.

## Quick start (pick the cheapest path)
- Not sure which endpoint? `GET https://api.agentdatahub.de/api/v1/ask?q=YOUR_QUESTION&compact=1`
- Whole task in 1 call (bundles): `GET https://api.agentdatahub.de/api/v1/bundles`
- Up to 10 calls in 1 request: `POST https://api.agentdatahub.de/api/v1/batch` body `{"compact":true,"requests":[{"apiId":"..."},{"q":"..."}]}`
- Data over time (own archive): `GET https://api.agentdatahub.de/api/v1/history` → `/api/v1/history/{apiId}?_from=YYYY-MM-DD&format=csv`
- Find endpoints: `GET https://api.agentdatahub.de/api/v1/catalog?q=KEYWORD&compact=1&limit=10` (each result has a ready `call` URL)
- MCP (Streamable HTTP): `POST https://api.agentdatahub.de/mcp` · OpenAPI: `https://api.agentdatahub.de/openapi.json`

## Token savers (work on /ask, /call and /batch)
- `compact=1` drops provenance/hint boilerplate (keeps data, data_freshness, source, license)
- `fields=a,b.c` returns only these data fields (dot paths)
- `format=llm` returns Markdown instead of JSON

## Task bundles (1 call instead of 4–7)
- **bundle-location-brief**: `GET https://api.agentdatahub.de/api/v1/call/bundle-location-brief?place=Berlin` — Everything an agent needs about a place in ONE call: resolved coordinates, current weather + forecast for up to 16 days (days=), air quality, local time, public holidays flagged inside the forecast window, and local currency exchange rates. Replaces 6 separate tool calls.
- **bundle-country-brief**: `GET https://api.agentdatahub.de/api/v1/call/bundle-country-brief?country=DE` — Macro snapshot of a country in ONE call: World Bank profile (capital, population, income level), latest inflation, GDP, GDP growth and unemployment, next public holidays and currency rates vs USD/EUR. Replaces 7 separate tool calls.
- **bundle-npm-package-brief**: `GET https://api.agentdatahub.de/api/v1/call/bundle-npm-package-brief?package=hono` — Should a coding agent add this dependency? ONE call returns latest version, license, dependency count, weekly downloads, known vulnerabilities (OSV) of the latest version and GitHub repo health (stars, open issues, last push, archived). Replaces 4 tool calls.

## Time-series archive (250 series, 719 change points recorded)
- Openly licensed sources are snapshotted continuously; query with the same params as the live call.
- `GET https://api.agentdatahub.de/api/v1/history/{apiId}?_from=2026-01-01&fields=value&format=csv`

## Deterministic core tools (avoid LLM arithmetic/time mistakes)
- `ai-tool-precision-calculator`: `GET https://api.agentdatahub.de/api/v1/call/ai-tool-precision-calculator?expr=(1250*1.085^5)+sqrt(144)`
- `ai-tool-ab-test-significance`: `GET https://api.agentdatahub.de/api/v1/call/ai-tool-ab-test-significance?visitors_a=5000&conv_a=200&visitors_b=5000&conv_b=260`
- `ai-tool-base-radix-converter`: `GET https://api.agentdatahub.de/api/v1/call/ai-tool-base-radix-converter?value=2026`
- `ai-tool-bayesian-inference-updater`: `GET https://api.agentdatahub.de/api/v1/call/ai-tool-bayesian-inference-updater?prior=0.01&sensitivity=0.99&false_positive=0.05`
- `ai-tool-bmi-bsa-body-calculator`: `GET https://api.agentdatahub.de/api/v1/call/ai-tool-bmi-bsa-body-calculator?weight_kg=80&height_cm=180&age=30`
- `ai-tool-chemical-molar-mass-balancer`: `GET https://api.agentdatahub.de/api/v1/call/ai-tool-chemical-molar-mass-balancer?formula=C6H12O6`
- `ai-tool-color-space-wcag-contrast`: `GET https://api.agentdatahub.de/api/v1/call/ai-tool-color-space-wcag-contrast?fg=%2338bdf8&bg=%23090d16`
- `ai-tool-combinatorics-probability`: `GET https://api.agentdatahub.de/api/v1/call/ai-tool-combinatorics-probability?n=49&k=6`
- `ai-tool-credit-card-luhn-validator`: `GET https://api.agentdatahub.de/api/v1/call/ai-tool-credit-card-luhn-validator?number=4532015112830366`
- `ai-tool-cron-schedule-next-runs`: `GET https://api.agentdatahub.de/api/v1/call/ai-tool-cron-schedule-next-runs?cron=*/15 * * * *`
- `ai-tool-cryptographic-hash-suite`: `GET https://api.agentdatahub.de/api/v1/call/ai-tool-cryptographic-hash-suite?text=Universal-AI-Data-Hub`
- `ai-tool-date-add-subtract`: `GET https://api.agentdatahub.de/api/v1/call/ai-tool-date-add-subtract?date=2026-10-27&days=90`
- `ai-tool-date-diff-workdays`: `GET https://api.agentdatahub.de/api/v1/call/ai-tool-date-diff-workdays?start=2026-01-01&end=2026-12-31`
- `ai-tool-email-syntax-mx-inspector`: `GET https://api.agentdatahub.de/api/v1/call/ai-tool-email-syntax-mx-inspector?email=developer@github.com`
- `ai-tool-geodesic-bearing-midpoint`: `GET https://api.agentdatahub.de/api/v1/call/ai-tool-geodesic-bearing-midpoint?lat1=52.5200&lon1=13.4050&lat2=35.6762&lon2=139.6503`
- `ai-tool-json-validator-repair`: `GET https://api.agentdatahub.de/api/v1/call/ai-tool-json-validator-repair?json={"name":"AI Hub","apis":5040,}`
- `ai-tool-linear-regression-forecaster`: `GET https://api.agentdatahub.de/api/v1/call/ai-tool-linear-regression-forecaster?y=100,118,135,154,172&steps=3`
- `ai-tool-llm-token-cost-estimator`: `GET https://api.agentdatahub.de/api/v1/call/ai-tool-llm-token-cost-estimator?text=Calculate+the+exact+token+count+and+API+inference+cost+for+this+prompt+across+all+major+LLMs.`
- `ai-tool-loan-amortization-schedule`: `GET https://api.agentdatahub.de/api/v1/call/ai-tool-loan-amortization-schedule?principal=300000&rate=3.85&years=25`
- `ai-tool-matrix-determinant-solver`: `GET https://api.agentdatahub.de/api/v1/call/ai-tool-matrix-determinant-solver?matrix=4,7;2,6`
- `ai-tool-npv-irr-cashflow`: `GET https://api.agentdatahub.de/api/v1/call/ai-tool-npv-irr-cashflow?rate=0.08&cashflows=-10000,3000,4000,5000,6000`
- `ai-tool-password-entropy-auditor`: `GET https://api.agentdatahub.de/api/v1/call/ai-tool-password-entropy-auditor?password=Tr0ub4dor%263-AI-Hub!`
- `ai-tool-prime-factorization-gcd`: `GET https://api.agentdatahub.de/api/v1/call/ai-tool-prime-factorization-gcd?n=360&m=144`
- `ai-tool-quadratic-polynomial-roots`: `GET https://api.agentdatahub.de/api/v1/call/ai-tool-quadratic-polynomial-roots?a=1&b=-5&c=6`
- `ai-tool-regex-live-tester`: `GET https://api.agentdatahub.de/api/v1/call/ai-tool-regex-live-tester?pattern=(\d{4})-(\d{2})-(\d{2})&text=Release+dates:+2026-10-27+and+2026-12-01`
- `ai-tool-semver-compatibility-checker`: `GET https://api.agentdatahub.de/api/v1/call/ai-tool-semver-compatibility-checker?v1=2.4.1&v2=2.10.0`
- `ai-tool-solar-zenith-daylight`: `GET https://api.agentdatahub.de/api/v1/call/ai-tool-solar-zenith-daylight?lat=52.52&day_of_year=172`
- `ai-tool-statistical-analyzer`: `GET https://api.agentdatahub.de/api/v1/call/ai-tool-statistical-analyzer?data=12,15,18,22,24,25,98`
- `ai-tool-string-encoding-transformer`: `GET https://api.agentdatahub.de/api/v1/call/ai-tool-string-encoding-transformer?text=Hello+AI+Agent+2026!`
- `ai-tool-string-similarity-levenshtein`: `GET https://api.agentdatahub.de/api/v1/call/ai-tool-string-similarity-levenshtein?a=Germany+Inflation+Rate&b=Germny+Inflaton+Rates`
- `ai-tool-text-readability-linguistics`: `GET https://api.agentdatahub.de/api/v1/call/ai-tool-text-readability-linguistics?text=Artificial+intelligence+agents+require+deterministic+low-latency+APIs+for+reliable+execution.`
- `ai-tool-timezone-bridge`: `GET https://api.agentdatahub.de/api/v1/call/ai-tool-timezone-bridge?from=Europe/Berlin&to=Asia/Tokyo`
- `ai-tool-unit-converter`: `GET https://api.agentdatahub.de/api/v1/call/ai-tool-unit-converter?value=100&from=km&to=mi`
- `ai-tool-url-utm-parser-builder`: `GET https://api.agentdatahub.de/api/v1/call/ai-tool-url-utm-parser-builder?url=https%3A%2F%2Fexample.com%3A8443%2Fproducts%2Fai%3Futm_source%3Dgithub%26ref%3Dmcp%26id%3D42`
- `ai-tool-uuid-ulid-nanoid-generator`: `GET https://api.agentdatahub.de/api/v1/call/ai-tool-uuid-ulid-nanoid-generator?count=5`
- `ai-tool-vat-sales-tax-splitter`: `GET https://api.agentdatahub.de/api/v1/call/ai-tool-vat-sales-tax-splitter?amount=1190&rate=19&mode=gross_to_net`
- `ai-tool-world-atomic-clock`: `GET https://api.agentdatahub.de/api/v1/call/ai-tool-world-atomic-clock?tz=Europe/Berlin`

## Categories (3 examples each — search the catalog for the rest)
### Finance & Markets (121) — `GET https://api.agentdatahub.de/api/v1/catalog?category=Finance%20%26%20Markets&limit=20`
- `fx-exchange-rates`: ECB Official Foreign Exchange Rates (30+ Fiat Currencies)
- `macro-country-inflation`: Macroeconomic Inflation Rate (CPI Annual %) by Country
- `macro-country-briefing`: Country Economy 360° AI Briefing (GDP + Inflation + Unemployment + Population)

### AI Agent Bundles (3) — `GET https://api.agentdatahub.de/api/v1/catalog?category=AI%20Agent%20Bundles&limit=20`
- `bundle-country-brief`: Country Brief Bundle (Profile, Inflation, GDP, Growth, Unemployment, Holidays, FX) — 1 Call
- `bundle-location-brief`: Location Brief Bundle (Weather, Forecast, Air Quality, Local Time, Holidays, FX) — 1 Call
- `bundle-npm-package-brief`: npm Package Due-Diligence Bundle (Version, License, Downloads, Vulnerabilities, Repo Health) — 1 Call

### Developer, Tech & Web (158) — `GET https://api.agentdatahub.de/api/v1/catalog?category=Developer%2C%20Tech%20%26%20Web&limit=20`
- `ai-tool-precision-calculator`: AI Precision Scientific Calculator & Step-by-Step Math Solver
- `ai-tool-ab-test-significance`: AI A/B-Test Conversion Lift, Z-Score & Statistical Significance Oracle
- `ai-tool-base-radix-converter`: AI Number Radix (Bin/Oct/Dec/Hex), Base64 & Roman Numeral Converter

### Knowledge, Research & News (121) — `GET https://api.agentdatahub.de/api/v1/catalog?category=Knowledge%2C%20Research%20%26%20News&limit=20`
- `academic-citation-formatter`: Academic Citation Generator (APA 7th, MLA 9th, Chicago, IEEE, BibTeX)
- `ai-scientific-doi-360-briefing`: AI Scientific Paper DOI 360° Metadata & Citation Briefing
- `ai-tech-news-frontpage-briefing`: AI Tech & Science Frontpage 360° Briefing (HackerNews + Spaceflight)

### AI Models, Cloud & Cybersecurity (1130) — `GET https://api.agentdatahub.de/api/v1/catalog?category=AI%20Models%2C%20Cloud%20%26%20Cybersecurity&limit=20`
- `ai-model-spec-anthropic-long-context-1m`: Anthropic Million-Token Extended Context Enterprise (anthropic-long-context-1m) Pricing & Spec Oracle
- `ai-json-schema-validator`: Deterministic JSON Syntax & Tool-Call Payload Repair Inspector
- `ai-model-spec-anthropic-agent-computer-use`: Anthropic GUI Desktop & Browser Action Agent (anthropic-agent-computer-use) Pricing & Spec Oracle

### Geodata, Weather & Environment (122) — `GET https://api.agentdatahub.de/api/v1/catalog?category=Geodata%2C%20Weather%20%26%20Environment&limit=20`
- `space-satellite-orbit-tle`: Satellite Orbit & TLE Tracker (NORAD ID or Name, e.g. ISS, Starlink, Hubble)
- `geo-agriculture-soil-briefing`: Agricultural Soil Moisture, Soil Temperature & Evapotranspiration Briefing
- `geo-air-quality-aqi`: Global Air Quality Index (European AQI, US AQI, PM2.5, PM10, NO2, Ozone)

### Global Commerce, Logistics & Aviation (1130) — `GET https://api.agentdatahub.de/api/v1/catalog?category=Global%20Commerce%2C%20Logistics%20%26%20Aviation&limit=20`
- `aviation-airport-hub-1`: Frankfurt Airport (FRA / EDDF — Frankfurt) Cargo & Geodesic Oracle
- `aviation-airport-hub-10`: Los Angeles International Airport (LAX / KLAX — Los Angeles) Cargo & Geodesic Oracle
- `aviation-airport-hub-100`: Global Aviation Hub #100 (HUB100 — Latin America) Cargo & Geodesic Oracle

### Law, Compliance, Health & Nutrition Science (1130) — `GET https://api.agentdatahub.de/api/v1/catalog?category=Law%2C%20Compliance%2C%20Health%20%26%20Nutrition%20Science&limit=20`
- `clinical-biometric-calculator-1`: Clinical & Physiological Calculator #1: Renal & Metabolic Equations
- `clinical-biometric-calculator-10`: Clinical & Physiological Calculator #10: Cardiovascular Risk & Hemodynamics
- `clinical-biometric-calculator-100`: Clinical & Physiological Calculator #100: Cardiovascular Risk & Hemodynamics

### Global Stocks, ETFs & Corporate Intelligence (1130) — `GET https://api.agentdatahub.de/api/v1/catalog?category=Global%20Stocks%2C%20ETFs%20%26%20Corporate%20Intelligence&limit=20`
- `corp-finance-quant-model-1`: Corporate Finance & Quant Model #1: SaaS Rule-of-40 & NDR (Scenario #1)
- `corp-finance-quant-model-10`: Corporate Finance & Quant Model #10: DCF & WACC Valuation (Scenario #10)
- `corp-finance-quant-model-100`: Corporate Finance & Quant Model #100: DCF & WACC Valuation (Scenario #100)

Full directory: https://api.agentdatahub.de/llms-full.txt
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