Liquid M

LiquidM Technology GmbH is a Berlin-based demand-side platform for programmatic advertising, founded in 2013 and backed early by Earlybird, later Bertelsmann-owned, and acquired by Smart AdServer — now Equativ — in December 2019. Its platform at platform.liquidm.com exposes two developer surfaces: a Reporting API that returns the same data as the platform's Visual Reports UI, split across more than thirty dimensions (campaign, ad, site, domain, device, geo, audience) and thirty-plus metrics (impressions, bids, bid requests, clicks, CTR, win rate, eCPM, conversion funnels, video quartiles); and a campaign Management API covering campaigns, budgets and ads. LiquidM publishes a first-party MIT-licensed JavaScript client for the Management API and an example Ruby client for the Reporting API from a 100-repo public GitHub organization, neither released to a package registry. Both APIs remain live and authenticate, but the published surface has fallen well behind the deployed one: probing confirms fifteen live v1 collections against the three the client documents, and an entirely undocumented v2 generation that answers in JSON:API. The liquidm.com marketing domain no longer serves HTTPS — its certificate expired in July 2026 — and over plain HTTP redirects to Equativ.

Liquid M publishes 5 APIs on the APIs.io network, including Ads API, Authentication API, Budgets API, and 2 more. Tagged areas include Company, Advertising, AdTech, Demand-Side Platform, and Programmatic Advertising.

Liquid M’s developer surface includes developer portal, signup flow, authentication, code examples, API reference, and 21 more developer resources.

🌐 Visit website 📡 Source on GitHub

22.9/100 emerging ▬ flat Agent 26/100 agent aware Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

2 APIs

Company Advertising AdTech Demand-Side Platform Programmatic Advertising Mobile Advertising Reporting Analytics Campaign Management OpenRTB

Kin Score

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

Composite quality — 22.9/100 · emerging

Contract Quality 3.5 / 23

Developer Ergonomics 8.5 / 18

Access Clarity 0.0 / 18

Operational Transparency 0.3 / 12

Contract Governance 2.1 / 11

Discoverability 6.8 / 9

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 26/100 · agent aware

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 7 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 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

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.

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/liquid-m: 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 5

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

Liquid M Ads API

The Ads API from Liquid M — 1 operation(s) for ads.

Liquid M Authentication API

Auth token issuance for the Reporting API.

Liquid M Budgets API

The Budgets API from Liquid M — 1 operation(s) for budgets.

Liquid M Campaigns API

The Campaigns API from Liquid M — 1 operation(s) for campaigns.

Liquid M Reporting API

Visual report queries across dimensions and metrics.

Open Collections 6

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

API Collection

OPEN COLLECTION

LiquidM Management Ads API

OPEN COLLECTION

LiquidM Management Ads Authentication API

OPEN COLLECTION

LiquidM Management Ads Budgets API

OPEN COLLECTION

LiquidM Management Ads Campaigns API

OPEN COLLECTION

LiquidM Management Ads Reporting API

OPEN COLLECTION

Pricing Plans 1

Published pricing tiers and plan structures.

Liquid M Plans Pricing

0 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Liquid M Rate Limits

0 limits

RATE LIMITS

JSON Schema 1

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

LiquidM Visual Report

3 properties

JSON SCHEMA

Examples 1

Example request and response payloads for these APIs.

Liquid M Visual Report Response

3 fields

EXAMPLE

Security Posture 2

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

Liquid M Authentication

apiKey · 1 scheme

SECURITY

Liquid M Domain Security

TLSv1.2

SECURITY

Agentic Access 1

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

Liquid M Agentic Access

7 operations · 3 acting

AGENTIC

Resources

Get Started 2

Portal, sign-up, and the first successful call

Portal

Portal

SignUp

SignUp

Documentation 2

Reference material describing how the API behaves

JSONSchema

JSONSchema

APIReference

APIReference

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

X-MCPServerCandidate

X-MCPServerCandidate

AgentSkill

AgentSkill

LLMsTxt

LLMsTxt

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

Conventions

ErrorCatalog

Lifecycle

Conformance

Vocabulary

DataModel

Build 4

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

Packages

SDKs

Examples

Access & Security 2

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

Operate 2

Status, limits, changes, and where to get help

IssueTracker

IssueTracker

RateLimits

RateLimits

Commercial 1

Pricing, plans, and the legal terms of use

Plans

Plans

Company 1

The organization behind the API

Website

Website

Other 2

Properties that don't map to a standard resource type

Overlay

Overlay

Overlay

Overlay

Source (apis.yml)

aid: liquid-m
name: Liquid M
description: 'LiquidM Technology GmbH is a Berlin-based demand-side platform for programmatic advertising, founded in 2013
  and backed early by Earlybird, later Bertelsmann-owned, and acquired by Smart AdServer — now Equativ — in December 2019.
  Its platform at platform.liquidm.com exposes two developer surfaces: a Reporting API that returns the same data as the platform''s
  Visual Reports UI, split across more than thirty dimensions (campaign, ad, site, domain, device, geo, audience) and thirty-plus
  metrics (impressions, bids, bid requests, clicks, CTR, win rate, eCPM, conversion funnels, video quartiles); and a campaign
  Management API covering campaigns, budgets and ads. LiquidM publishes a first-party MIT-licensed JavaScript client for the
  Management API and an example Ruby client for the Reporting API from a 100-repo public GitHub organization, neither released
  to a package registry. Both APIs remain live and authenticate, but the published surface has fallen well behind the deployed
  one: probing confirms fifteen live v1 collections against the three the client documents, and an entirely undocumented v2
  generation that answers in JSON:API. The liquidm.com marketing domain no longer serves HTTPS — its certificate expired in
  July 2026 — and over plain HTTP redirects to Equativ.'
deliveryModel:
  model: unknown
  open_source: unknown
  commercial: true
  callable_host: true
  label: Delivery model not determined — needs a product licence on record
  confidence: low
  source:
  - openapi
  - pricing
  - repository-unlicensed
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source:
  - authentication
  - rate-limits
  - security
  generated: '2026-09-03'
  method: derived
image: https://avatars.githubusercontent.com/u/5937978?v=4
url: https://raw.githubusercontent.com/api-evangelist/liquid-m/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- earlybird
x-tier: enriched
x-tier-reason: portfolio-lead
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-08-13'
tags:
- Company
- Advertising
- AdTech
- Demand-Side Platform
- Programmatic Advertising
- Mobile Advertising
- Reporting
- Analytics
- Campaign Management
- OpenRTB
apis:
- aid: liquid-m:liquid-m-ads-api
  name: Liquid M Ads API
  description: The Ads API from Liquid M — 1 operation(s) for ads.
  humanURL: https://github.com/liquidm/liquidm-reporting-api-client
  baseURL: https://platform.liquidm.com
  tags:
  - Ads
  properties:
  - type: OpenAPI
    url: openapi/liquid-m-ads-api-openapi.yml
  - type: Documentation
    url: https://github.com/liquidm/liquidm-reporting-api-client/blob/master/README.md
  - type: SourceCode
    url: https://github.com/liquidm/liquidm-reporting-api-client
  - type: Documentation
    url: https://github.com/liquidm/liquidm-management-api
  - type: SourceCode
    url: https://github.com/liquidm/liquidm-management-api
- aid: liquid-m:liquid-m-authentication-api
  name: Liquid M Authentication API
  description: Auth token issuance for the Reporting API.
  humanURL: https://github.com/liquidm/liquidm-reporting-api-client
  baseURL: https://platform.liquidm.com
  tags:
  - Authentication
  properties:
  - type: OpenAPI
    url: openapi/liquid-m-authentication-api-openapi.yml
  - type: Documentation
    url: https://github.com/liquidm/liquidm-reporting-api-client/blob/master/README.md
  - type: SourceCode
    url: https://github.com/liquidm/liquidm-reporting-api-client
  - type: Documentation
    url: https://github.com/liquidm/liquidm-management-api
  - type: SourceCode
    url: https://github.com/liquidm/liquidm-management-api
- aid: liquid-m:liquid-m-budgets-api
  name: Liquid M Budgets API
  description: The Budgets API from Liquid M — 1 operation(s) for budgets.
  humanURL: https://github.com/liquidm/liquidm-reporting-api-client
  baseURL: https://platform.liquidm.com
  tags:
  - Budgets
  properties:
  - type: OpenAPI
    url: openapi/liquid-m-budgets-api-openapi.yml
  - type: Documentation
    url: https://github.com/liquidm/liquidm-reporting-api-client/blob/master/README.md
  - type: SourceCode
    url: https://github.com/liquidm/liquidm-reporting-api-client
  - type: Documentation
    url: https://github.com/liquidm/liquidm-management-api
  - type: SourceCode
    url: https://github.com/liquidm/liquidm-management-api
- aid: liquid-m:liquid-m-campaigns-api
  name: Liquid M Campaigns API
  description: The Campaigns API from Liquid M — 1 operation(s) for campaigns.
  humanURL: https://github.com/liquidm/liquidm-reporting-api-client
  baseURL: https://platform.liquidm.com
  tags:
  - Campaigns
  properties:
  - type: OpenAPI
    url: openapi/liquid-m-campaigns-api-openapi.yml
  - type: Documentation
    url: https://github.com/liquidm/liquidm-reporting-api-client/blob/master/README.md
  - type: SourceCode
    url: https://github.com/liquidm/liquidm-reporting-api-client
  - type: Documentation
    url: https://github.com/liquidm/liquidm-management-api
  - type: SourceCode
    url: https://github.com/liquidm/liquidm-management-api
- aid: liquid-m:liquid-m-reporting-api
  name: Liquid M Reporting API
  description: Visual report queries across dimensions and metrics.
  humanURL: https://github.com/liquidm/liquidm-reporting-api-client
  baseURL: https://platform.liquidm.com
  tags:
  - Reporting
  properties:
  - type: OpenAPI
    url: openapi/liquid-m-reporting-api-openapi.yml
  - type: Documentation
    url: https://github.com/liquidm/liquidm-reporting-api-client/blob/master/README.md
  - type: SourceCode
    url: https://github.com/liquidm/liquidm-reporting-api-client
  - type: Documentation
    url: https://github.com/liquidm/liquidm-management-api
  - type: SourceCode
    url: https://github.com/liquidm/liquidm-management-api
common:
- type: AgenticAccess
  url: agentic-access/liquid-m-agentic-access.yml
- type: Overlay
  url: overlays/liquid-m-management-overlay.yaml
- type: IssueTracker
  url: https://github.com/liquidm/liquidm-reporting-api-client/issues
- type: GitHubOrganization
  url: https://github.com/liquidm
- type: Website
  url: https://liquidm.com
- type: Portal
  url: https://platform.liquidm.com
- type: SignUp
  url: https://platform.liquidm.com
- type: Authentication
  url: authentication/liquid-m-authentication.yml
- type: Conventions
  url: conventions/liquid-m-conventions.yml
- type: ErrorCatalog
  url: errors/liquid-m-problem-types.yml
- type: Lifecycle
  url: lifecycle/liquid-m-lifecycle.yml
- type: Conformance
  url: conformance/liquid-m-conformance.yml
- type: Vocabulary
  url: vocabulary/liquid-m-vocabulary.yml
- type: DataModel
  url: data-model/liquid-m-data-model.yml
- type: Packages
  url: packages/liquid-m-packages.yml
- type: SDKs
  url: packages/liquid-m-packages.yml
- type: Examples
  url: examples/liquid-m-visual-report-response.json
- type: JSONSchema
  url: json-schema/liquid-m-visual-report.json
- type: DomainSecurity
  url: security/liquid-m-domain-security.yml
- type: X-MCPServerCandidate
  url: mcp/liquid-m-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/liquid-m-llms.txt
- type: Overlay
  url: overlays/liquid-m-reporting-overlay.yaml
- type: Plans
  url: plans/liquid-m-plans-pricing.yml
- type: RateLimits
  url: rate-limits/liquid-m-rate-limits.yml
- type: APIReference
  url: https://github.com/liquidm/liquidm-reporting-api-client/blob/master/README.md
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
x-enrichment:
  date: '2026-08-13'
  status: enriched
  artifacts_added: 3
  pass: local-v1
  note: Live route probing of platform.liquidm.com found 15 v1 collections against 3 documented, plus an undocumented live
    v2 generation serving application/vnd.api+json. Acquisition by Smart AdServer/Equativ sourced to the acquirer's 2019-12-18
    press release. liquidm.com TLS certificate expired 2026-07-20. The false WellKnown pointer was removed — its own probe
    records a soft 404 on every path.

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