aWATTar website screenshot

aWATTar

aWATTar provides a free, public REST API delivering real-time and next-day hourly electricity spot prices sourced from the EPEX Spot market exchange for both Austria and Germany. The API enables developers, smart home integrators, and commercial operators to build dynamic energy pricing applications that respond to market conditions. Prices are updated daily at 14:00 CET covering the following day, and the API returns JSON data including start/end timestamps and market price per MWh. No authentication token is required, making integration straightforward for any developer. The service is offered free of charge under a fair-use policy of 100 requests per day per client, supporting use cases such as EV charging optimization, smart heating control, and automated energy management systems.

aWATTar publishes 1 API on the APIs.io network: Market Data API. Tagged areas include Electricity, Energy, Spot Price, EPEX Spot, and Dynamic Pricing.

The aWATTar catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.

aWATTar’s developer surface includes documentation, engineering blog, pricing, and 8 more developer resources.

🌐 Visit website 📡 Source on GitHub
36.8/100 thin ▼ -7.8 Agent 35/100 agent ready Full breakdown ↓
scored 2026-07-28 · rubric v0.6
AccessFreeOpen⚡ Free to try
1 APIs
ElectricityEnergySpot PriceEPEX SpotDynamic PricingAustriaGermanySmart EnergyIoT

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-28 · rubric v0.6
Composite quality — 36.8/100 · thin
Contract Quality 16.1 / 25
Developer Ergonomics 2.2 / 20
Commercial Clarity 7.9 / 20
Operational Transparency 0.7 / 13
Governance 7.0 / 12
Discoverability 6.9 / 10
Agent readiness — 35/100 · agent ready
Machine-Readable Contract 18 / 18
Agentic Access Contract 10 / 10
MCP Server 0 / 12
Machine-Readable Auth 0 / 10
Idempotency 0 / 9
Stable Error Semantics 8 / 8
Request/Response Examples 7 / 7
Rate-Limit Signaling 7 / 7
Typed Event Surface 0 / 6
Agent Skills 0 / 5
Well-Known Catalog 0 / 4
Consent & Bot Identity 0 / 3
A2A Agent Card 0 / 8
Dry-Run / Simulate Mode 0 / 4
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/awattar: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 1

Individual APIs this provider publishes, each with its own machine-readable definition.

aWATTar Market Data API

EPEX Spot electricity market price data

Pricing Plans 1

Published pricing tiers and plan structures.

Awattar Plans Pricing

1 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Awattar Rate Limits

0 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Awattar Finops

FINOPS

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Awattar Context

5 classes · 8 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

aWATTar API Rules

4 rules · 3 warnings 1 info

SPECTRAL

JSON Schema 1

Standalone JSON Schema definitions for this provider's data models.

aWATTar Market Data Response

2 properties

JSON SCHEMA

Examples 1

Example request and response payloads for these APIs.

Awattar Market Data Example

2 fields

EXAMPLE

Security Posture 1

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Awattar Domain Security

TLSv1.3 · DMARC

SECURITY

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Awattar Agentic Access

1 operation

1 operations · 0 acting

AGENTIC

Resources

Documentation 1

Reference material describing how the API behaves

Documentation
Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess
AgenticAccess

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrg
GitHubOrg

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity

Operate 1

Status, limits, changes, and where to get help

RateLimits
RateLimits

Commercial 3

Pricing, plans, and the legal terms of use

Pricing
Pricing
 Plans
Plans
 FinOps
FinOps

Company 3

The organization behind the API

Website
Website
 LinkedIn
LinkedIn
 Blog
Blog

Source (apis.yml)

apis.yml Raw ↑ 
name: aWATTar
description: aWATTar provides a free, public REST API delivering real-time and next-day hourly electricity spot prices sourced
  from the EPEX Spot market exchange for both Austria and Germany. The API enables developers, smart home integrators, and
  commercial operators to build dynamic energy pricing applications that respond to market conditions. Prices are updated
  daily at 14:00 CET covering the following day, and the API returns JSON data including start/end timestamps and market price
  per MWh. No authentication token is required, making integration straightforward for any developer. The service is offered
  free of charge under a fair-use policy of 100 requests per day per client, supporting use cases such as EV charging optimization,
  smart heating control, and automated energy management systems.
type: Index
accessModel:
  pricing: free
  onboarding: open
  trial: false
  try_now: true
  public: true
  label: Free · Open access
  confidence: medium
  source:
  - plans
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/awattar.png
url: https://raw.githubusercontent.com/api-evangelist/awattar/refs/heads/main/apis.yml
created: '2026-06-13'
modified: '2026-06-13'
specificationVersion: '0.19'
tags:
- Electricity
- Energy
- Spot Price
- EPEX Spot
- Dynamic Pricing
- Austria
- Germany
- Smart Energy
- IoT
apis:
- aid: awattar:awattar-market-data-api
  name: aWATTar Market Data API
  description: EPEX Spot electricity market price data
  humanURL: https://www.awattar.at/services/api
  baseURL: https://api.awattar.at
  tags:
  - Market Data
  properties:
  - type: OpenAPI
    url: openapi/awattar-market-data-api-openapi.yml
  - type: Documentation
    url: https://www.awattar.at/services/api
common:
- type: AgenticAccess
  url: agentic-access/awattar-agentic-access.yml
- type: DomainSecurity
  url: security/awattar-domain-security.yml
- type: Website
  url: https://www.awattar.at
- type: Documentation
  url: https://www.awattar.at/services/api
- type: GitHubOrg
  url: https://github.com/awattarenergy
- type: LinkedIn
  url: https://www.linkedin.com/company/awattar
- type: Blog
  url: https://www.awattar.at/blog
- type: Pricing
  url: https://www.awattar.at/tariffs/hourly
- type: Plans
  url: plans/awattar-plans-pricing.yml
- type: RateLimits
  url: rate-limits/awattar-rate-limits.yml
- type: FinOps
  url: finops/awattar-finops.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com