ListPlus

ListPlus provides a B2B data platform that helps users find, verify, and enrich company and contact information. It offers over 100 data quality checks, enrichment capabilities, AI‑driven research, and integrations with CRM and sales tools. Users can import lists, run automated checks, and enhance records with accurate contact details, all hosted in the EU for compliance.

ListPlus is listed with 1 API on the APIs.io network. Tagged areas include B2B, Data Enrichment, Contact Data, Artificial Intelligence, and CRM.

ListPlus’ developer surface includes support, engineering blog, pricing, getting-started guide, API reference, documentation, and 16 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

32.7/100 thin Agent 25/100 agent aware Full breakdown ↓
scored 2026-11-13 · rubric v0.28.0 · Show this score on your site →

AccessFreemium

1 API 1 MCP Servers 1 Agent Skills

B2B Data Enrichment Contact Data Artificial Intelligence CRM

Kin Score

Kin Score How this is scored →
scored 2026-11-13 · rubric v0.28.0

Composite quality — 32.7/100 · thin

Contract Quality 0.0 / 21

Developer Ergonomics 7.2 / 17

Access Clarity 11.2 / 17

Operational Transparency 1.0 / 11

Contract Governance 0.5 / 10

Discoverability 6.4 / 9

Regulatory Posture 4.1 / 15

Agent readiness — 25/100 · agent aware

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 5 / 5

Well-Known Catalog 4 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 6 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 6 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 5 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) 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 could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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Agent readiness — checks not met, largest first (exact, from this profile):

Machine-Readable Contract +18 pts — api_specs includes an OpenAPI document Ask about this →
Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author Ask about this →
Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented) Ask about this →
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes Ask about this →
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0 Ask about this →
Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented) Ask about this →

7 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Contract Quality scores 0.0 — up to +25.0 composite points Ask about this →
Operational Transparency scores 9.5 — up to +11.8 composite points Ask about this →
Developer Ergonomics scores 42.1 — up to +11.6 composite points Ask about this →

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

Not sure how this applies to your stack? Ask about any one item. Kin Lane reads every question, looks at your profile and your situation, and replies with what a fix would take — scoped to that one area, priced up front, yours whether you ship it or not. Ask a question →

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 the provider profile at artifacts.apis.io/listplus/apis.yml: open an issue on github.com/api-evangelist/listplus to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Standards implemented 2

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

Model Context Protocol (MCP)

measured — observed by APIs.io (documented)

Dynamic Client Registration

measured — observed by APIs.io (published)

APIs 1

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

ListPlus API

Check, complete and find B2B contacts and companies.

MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

ListPlus MCP Server

Remote MCP server at listplus.ai.

MCP SERVER

Agent Skills 1

Packaged agent skills for driving this provider's APIs from an AI assistant.

enrich-records

AGENT SKILL

ListPlus API pricing

Prices published by ListPlus, read 2026-11-12 from listplus.ai/en/pricing.

Plan	Price
Basic	€0/ $0
Pro	€69/ $79

Plan details, limits and sources →

Pricing Plans 1

Published pricing tiers and plan structures.

ListPlus Plans Pricing

2 plans

PLANS

Security Posture 2

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

ListPlus Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

ListPlus Trust Center

SOC 2, ISO 27001, GDPR

SECURITY

Resources

Get Started 2

Portal, sign-up, and the first successful call

Login

GettingStarted

GettingStarted

Documentation 2

Reference material describing how the API behaves

APIReference

APIReference

Documentation

Documentation

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

AgentSkill

LLMsTxt

MCPServer

WellKnown

Design & Contract 1

Pagination, idempotency, versioning, errors, and events

Conformance

Conformance

Access & Security 4

Authentication, authorization, and security posture

Compliance

Security

TrustCenter

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

Support

Support

Commercial 4

Pricing, plans, and the legal terms of use

Plans

TermsOfService

PrivacyPolicy

Pricing

Company 2

The organization behind the API

Blog

Blog

Website

Website

Other 2

Properties that don't map to a standard resource type

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: listplus
name: ListPlus
accessModel:
  pricing: freemium
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Freemium
  confidence: low
  source:
  - plans
  - security
  generated: '2026-11-13'
  method: derived
image: https://listplus.ai/images/website/og/home-en.png
description: ListPlus provides a B2B data platform that helps users find, verify, and enrich company and contact information.
  It offers over 100 data quality checks, enrichment capabilities, AI‑driven research, and integrations with CRM and sales
  tools. Users can import lists, run automated checks, and enhance records with accurate contact details, all hosted in the
  EU for compliance.
url: https://artifacts.apis.io/listplus/apis.yml
x-type: company
x-source: harvest:new-submission
x-tier: profiled
x-tier-reason: enrichment pass 2026-11-12 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-11-11'
modified: '2026-11-11'
tags:
- B2B
- Data Enrichment
- Contact Data
- Artificial Intelligence
- CRM
tags_raw:
- B2B
- DataEnrichment
- ContactData
- AI
- CRM
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Plans
  url: plans/listplus-plans-pricing.yml
- type: AgentSkill
  url: skills/_index.yml
- type: Compliance
  url: https://listplus.ai/en/trust
- type: Conformance
  url: conformance/listplus-conformance.yml
- type: LLMsTxt
  url: llms/listplus-llms.txt
- type: MCPServer
  url: mcp/listplus-mcp.yml
- type: WellKnown
  url: well-known/listplus-well-known.yml
- type: Hosts
  url: hosts/listplus-hosts.yml
- type: Vendors
  url: vendors/listplus-vendors.yml
- type: TermsOfService
  url: https://listplus.ai/en/terms
- type: Support
  url: https://listplus.ai/en/help
- type: Security
  url: https://listplus.ai/en/security
- type: PrivacyPolicy
  url: https://listplus.ai/en/privacy
- type: Login
  url: https://listplus.ai/login
- type: Blog
  url: https://listplus.ai/en/blog
- type: Pricing
  url: https://listplus.ai/en/help/plans-credits-billing/plans-and-pricing
- type: GettingStarted
  url: https://listplus.ai/en/help/getting-started/what-is-listplus
- type: APIReference
  url: https://listplus.ai/llms.txt
- type: TrustCenter
  url: security/listplus-trust-center.yml
- type: DomainSecurity
  url: security/listplus-domain-security.yml
- type: Website
  url: https://listplus.ai/
- type: Documentation
  url: https://listplus.ai/en/
apis:
- name: ListPlus API
  description: Check, complete and find B2B contacts and companies.
  humanURL: https://listplus.ai/en/
  baseURL: https://listplus.ai
  aid: listplus:listplus-api
x-submission-notes: B2B contact data quality/enrichment (salesperformer GmbH); OpenAPI https://listplus.ai/a/openapi.json,
  MCP https://listplus.ai/mcp, apis.json
x-submission-probe: 2026-11-11 root 200 via 1 redirect -> https://listplus.ai/en; invented path 404; /a/openapi.json 200 OpenAPI
  3.1
x-enrichment:
  date: '2026-11-12'
  status: enriched
  artifacts_added: 18
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

ListPlus API — frequently asked questions

Does ListPlus have an API?

Yes. APIs.io lists 1 API from ListPlus, including ListPlus API.

How much does the ListPlus API cost?

ListPlus publishes its prices; its Basic plan is €0/ $0 as of 2026-11-12. APIs.io lists 2 pricing plans for ListPlus, with each plan's price, limits and inclusions under Pricing on this page.

Does ListPlus have an MCP server?

Yes. APIs.io lists 1 MCP server for ListPlus: Remote MCP server at listplus.ai.

Is the ListPlus API ready for AI agents?

ListPlus has a Kin Score of 32.7 out of 100 (thin) and an Agent Readiness score of 24.7 (agent-aware), scored by API Evangelist on 2026-11-13.

Work with this as data

Every provider here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for providers

9 MCP tools reach this

find_providersBrowse and filter every provider in the catalog.
get_provider_artifactsEvery artifact this provider publishes, grouped by type.
get_provider_operationsEvery operation across all of their OpenAPIs — one call instead of parsing every spec.
get_provider_toolsEvery MCP tool they ship, with the operation each wraps.
get_provider_evidenceHow each part of their score was established. Free — the basis for a claim should not sit behind it.
get_provider_ratingPRO — composite, band, trend and facet scores.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

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