Ostrom

Ostrom is a fully digital green-energy provider based in Berlin, Germany, offering variable, fixed, and dynamic electricity tariffs managed entirely through a mobile app, with smart-meter integration, device control, EV-charging optimization, and a NeoGrid virtual power plant. Its developer API lets Ostrom customers and partners integrate with the smart energy-management platform: OAuth2-secured REST endpoints for user data, orders, contracts, smart-meter energy consumption, day-ahead EEX spot prices, product pricing, and partner webhooks.

Ostrom publishes 7 APIs on the APIs.io network, including Auth API, Contracts API, Orders API, and 4 more. Tagged areas include Company, Energy, Electricity, Green Energy, and Smart Meter.

The Ostrom catalog on APIs.io includes 1 event-driven AsyncAPI specification.

Ostrom’s developer surface includes documentation, API reference, getting-started guide, support, engineering blog, pricing, signup flow, and 20 more developer resources.

🌐 Visit website 📡 Source on GitHub

48.2/100 developing ▬ flat Agent 31/100 agent ready saas Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

AccessSelf serve

1 APIs

Company Energy Electricity Green Energy Smart Meter Dynamic Pricing Germany Sustainability Webhook

Kin Score

Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0

Composite quality — 48.2/100 · developing

Contract Quality 11.4 / 19

Developer Ergonomics 7.8 / 15

Access Clarity 6.7 / 15

Operational Transparency 2.3 / 10

Contract Governance 0.4 / 9

Discoverability 5.7 / 8

Regulatory Posture 6.1 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 31/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 6 / 6

Agent Skills 5 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Regulatory Posture applies to this provider. Its tags matched the Energy & Utilities regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

Create-or-Update Ergonomics applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

The six quality facets above are damped to 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from github.com/api-evangelist/ostrom: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 7

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

Ostrom Auth API

Describe how to authenticate in the api

Ostrom Contracts API

Describe how to fetch information related with contracts

Ostrom Orders API

Describe how to fetch information related with orders

Ostrom Prices API

Describe how to fetch information related with prices

Ostrom Products API

Describe how to fetch information related with products

Ostrom Users API

Describe how to fetch information related with users

Ostrom Webhooks API

Describe how to create webhooks and receive notifications from our system.

Scroll for all 7

Open Collections 8

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

API Collection

OPEN COLLECTION

Ostrom Auth API

OPEN COLLECTION

Ostrom Auth Contracts API

OPEN COLLECTION

Ostrom Auth Orders API

OPEN COLLECTION

Ostrom Auth Prices API

OPEN COLLECTION

Ostrom Auth Products API

OPEN COLLECTION

Ostrom Auth Users API

OPEN COLLECTION

Ostrom Auth Webhooks API

OPEN COLLECTION

Scroll for all 8

Event Specifications 1

AsyncAPI definitions for this provider's event-driven and streaming APIs.

Ostrom Webhooks

ASYNCAPI

Security Posture 2

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

Ostrom Authentication

http/oauth2 · 2 schemes

SECURITY

Ostrom Domain Security

TLSv1.3 · HSTS · DNSSEC · DMARC

SECURITY

Agentic Access 1

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

Ostrom Agentic Access

18 operations · 6 acting

AGENTIC

Resources

Get Started 5

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

SignUp

SignUp

Login

Sandbox

Sandbox

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

X-MCPServerCandidate

AgentSkill

LLMsTxt

AgenticAccess

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

Conventions

Lifecycle

ErrorCatalog

DataModel

Conformance

Webhooks

Access & Security 2

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

Operate 2

Status, limits, changes, and where to get help

Support

Support

ChangeLog

ChangeLog

Commercial 3

Pricing, plans, and the legal terms of use

Pricing

Pricing

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 2

The organization behind the API

Blog

Blog

Website

Website

Other 1

Properties that don't map to a standard resource type

Overlay

Overlay

Source (apis.yml)

aid: ostrom
name: Ostrom
description: 'Ostrom is a fully digital green-energy provider based in Berlin, Germany, offering variable, fixed, and dynamic
  electricity tariffs managed entirely through a mobile app, with smart-meter integration, device control, EV-charging optimization,
  and a NeoGrid virtual power plant. Its developer API lets Ostrom customers and partners integrate with the smart energy-management
  platform: OAuth2-secured REST endpoints for user data, orders, contracts, smart-meter energy consumption, day-ahead EEX
  spot prices, product pricing, and partner webhooks.'
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: high
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Self-serve signup
  confidence: medium
  source:
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://cdn.prod.website-files.com/60ec127477c1e52acb31ae8c/60ffd44f1211be9d43aa3bd7_favicon-256x256.png
url: https://raw.githubusercontent.com/api-evangelist/ostrom/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- union-square-ventures
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-20'
x-enrichment:
  date: '2026-07-20'
  status: enriched
  artifacts_added: 18
  pass: local-v1
tags:
- Company
- Energy
- Electricity
- Green Energy
- Smart Meter
- Dynamic Pricing
- Germany
- Sustainability
- Webhook
tags_raw:
- Company
- Energy
- Electricity
- Green Energy
- Smart Meter
- Dynamic Pricing
- Germany
- Sustainability
- Webhooks
- API
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
apis:
- aid: ostrom:ostrom-auth-api
  name: Ostrom Auth API
  description: Describe how to authenticate in the api
  humanURL: https://docs.ostrom-api.io/reference/introduction
  baseURL: https://production.ostrom-api.io
  tags:
  - Authentication
  tags_raw:
  - Auth
  properties:
  - type: OpenAPI
    url: openapi/ostrom-auth-api-openapi.yml
- aid: ostrom:ostrom-contracts-api
  name: Ostrom Contracts API
  description: Describe how to fetch information related with contracts
  humanURL: https://docs.ostrom-api.io/reference/introduction
  baseURL: https://production.ostrom-api.io
  tags:
  - Contracts
  properties:
  - type: OpenAPI
    url: openapi/ostrom-contracts-api-openapi.yml
- aid: ostrom:ostrom-orders-api
  name: Ostrom Orders API
  description: Describe how to fetch information related with orders
  humanURL: https://docs.ostrom-api.io/reference/introduction
  baseURL: https://production.ostrom-api.io
  tags:
  - Order
  tags_raw:
  - Orders
  properties:
  - type: OpenAPI
    url: openapi/ostrom-orders-api-openapi.yml
- aid: ostrom:ostrom-prices-api
  name: Ostrom Prices API
  description: Describe how to fetch information related with prices
  humanURL: https://docs.ostrom-api.io/reference/introduction
  baseURL: https://production.ostrom-api.io
  tags:
  - Prices
  properties:
  - type: OpenAPI
    url: openapi/ostrom-prices-api-openapi.yml
- aid: ostrom:ostrom-products-api
  name: Ostrom Products API
  description: Describe how to fetch information related with products
  humanURL: https://docs.ostrom-api.io/reference/introduction
  baseURL: https://production.ostrom-api.io
  tags:
  - Product
  tags_raw:
  - Products
  properties:
  - type: OpenAPI
    url: openapi/ostrom-products-api-openapi.yml
- aid: ostrom:ostrom-users-api
  name: Ostrom Users API
  description: Describe how to fetch information related with users
  humanURL: https://docs.ostrom-api.io/reference/introduction
  baseURL: https://production.ostrom-api.io
  tags:
  - User
  tags_raw:
  - Users
  properties:
  - type: OpenAPI
    url: openapi/ostrom-users-api-openapi.yml
- aid: ostrom:ostrom-webhooks-api
  name: Ostrom Webhooks API
  description: Describe how to create webhooks and receive notifications from our system.
  humanURL: https://docs.ostrom-api.io/reference/introduction
  baseURL: https://production.ostrom-api.io
  tags:
  - Webhook
  tags_raw:
  - Webhooks
  properties:
  - type: OpenAPI
    url: openapi/ostrom-webhooks-api-openapi.yml
common:
- type: Overlay
  url: overlays/ostrom-openapi-overlay.yaml
- type: DeveloperPortal
  url: https://developer.ostrom-api.io/
- type: Documentation
  url: https://docs.ostrom-api.io/
- type: APIReference
  url: https://docs.ostrom-api.io/reference/introduction
- type: GettingStarted
  url: https://docs.ostrom-api.io/docs/getting-started
- type: Support
  url: https://support.ostrom.de/
- type: Blog
  url: https://ostrom.de/en/blog
- type: Pricing
  url: https://ostrom.de/en/strompreis
- type: SignUp
  url: https://ostrom.de/en/calculate-tariff
- type: Login
  url: https://join.ostrom.de
- type: TermsOfService
  url: https://ostrom.de/en/terms-and-conditions-overview
- type: PrivacyPolicy
  url: https://ostrom.de/en/privacy-policy
- type: Authentication
  url: authentication/ostrom-authentication.yml
- type: Sandbox
  url: sandbox/ostrom-sandbox.yml
- type: Conventions
  url: conventions/ostrom-conventions.yml
- type: ChangeLog
  url: changelog/ostrom-changelog.yml
- type: Lifecycle
  url: lifecycle/ostrom-lifecycle.yml
- type: ErrorCatalog
  url: errors/ostrom-problem-types.yml
- type: DataModel
  url: data-model/ostrom-data-model.yml
- type: Conformance
  url: conformance/ostrom-conformance.yml
- type: Webhooks
  url: asyncapi/ostrom-webhooks.yml
- type: X-MCPServerCandidate
  url: mcp/ostrom-mcp.yml
  note: 'Renamed from MCPServer 2026-09-03 (roadmap#247): the manifest self-describes as status: candidate — a tool list derived
    from the published API contracts, not an existing server. The scorer already read the manifest and reported mcp_server
    correctly; the MCPServer type was crediting the artifact-type surfaces with a server that does not exist.'
- type: AgentSkill
  url: skills/_index.yml
- type: LLMsTxt
  url: llms/ostrom-llms.txt
- type: DomainSecurity
  url: security/ostrom-domain-security.yml
- type: AgenticAccess
  url: agentic-access/ostrom-agentic-access.yml
- type: Website
  url: https://ostrom.de

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