Duo Leads

Duo Leads is a B2B lead generation service that positions firms as front‑runners in their sectors. It uses a multi‑channel strategy, cutting‑edge technology and a team of experts to deliver high‑quality leads, improve sales pipelines, and support business growth worldwide. The company emphasizes honesty, professional development, and tailored solutions for clients seeking to increase revenue and market presence.

Duo Leads is listed with 1 API on the APIs.io network: Duo Data Utilities API. Tagged areas include B2B, Lead Generation, Marketing, Sales, and Technology.

Duo Leads’ developer surface includes support, signup flow, pricing, engineering blog, API reference, and 13 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

37.4/100 thin Agent 22/100 agent aware Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessPaid

1 API

B2B Lead Generation Marketing Sales Technology

Kin Score

Kin Score How this is scored →
scored 2026-11-06 · rubric v0.27.0

Composite quality — 37.4/100 · thin

Contract Quality 7.2 / 21

Developer Ergonomics 3.6 / 17

Access Clarity 13.0 / 17

Operational Transparency 0.0 / 11

Contract Governance 2.2 / 10

Discoverability 5.3 / 9

Regulatory Posture 2.8 / 15

Agent readiness — 22/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 12

Machine-Readable Auth 0 / 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 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 8 / 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

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):

Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author
Machine-Readable Auth +10 pts — a served openid-configuration/oauth-authorization-server carrying `issuer` (served), else the securitySchemes class in the provider OpenAPIs — bound (mutualTLS, DPoP, Signature) > negotiable (oauth2 authorizationCode/clientCredentials, openIdConnect) > bearer (http bearer, apiKey)
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)
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes
Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented)
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link

10 more unmet checks in the Agent Readiness table above.

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

Contract Quality scores 33.7 — up to +16.6 composite points
Developer Ergonomics scores 21.4 — up to +15.7 composite points
Operational Transparency scores 0.0 — up to +13.0 composite points

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.

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/duoleads-com/apis.yml: open an issue on github.com/api-evangelist/duoleads-com 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 3

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.

Agent2Agent

measured — observed by APIs.io (conformant)

Model Context Protocol (MCP)

measured — observed by APIs.io (documented)

OpenAPI

measured — observed by APIs.io (published)

APIs 1

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

Duo Data Utilities API

Data utilities API providing IBAN, ISIN, VAT, Tax ID, Barcode, Timezone, Geo and other identifier lookups via GET requests.

Duo Leads API pricing

Prices published by Duo Leads, read 2026-11-06 from duoleads.com/pages/pricing-classic/.

Plan	Price
Prospecting Services Starter	$59.99
Prospecting Services Professional	$89.99
Prospecting Services Enterprise	$1
Appointment Setting Services Starter	$59.99
Appointment Setting Services Professional	$89.99
Appointment Setting Services Enterprise	$129.99
Virtual Assistant Services	$1250
Sales Development Services	$3250

All 11 plans, limits and sources →

Pricing Plans 1

Published pricing tiers and plan structures.

Duoleads Com Plans Pricing

11 plans

PLANS

Security Posture 1

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

Duoleads Com Domain Security

TLSv1.3 · DMARC

SECURITY

Resources

Get Started 1

Portal, sign-up, and the first successful call

SignUp

SignUp

Documentation 1

Reference material describing how the API behaves

APIReference

APIReference

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

Design & Contract 2

Pagination, idempotency, versioning, errors, and events

Vocabulary

Vocabulary

Conformance

Conformance

Build 2

SDKs, sample code, and the tooling you integrate with

SDKs

SDKs

Packages

Packages

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

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 3

Properties that don't map to a standard resource type

AgentCard

AgentCard

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: duoleads-com
name: Duo Leads
description: Duo Leads is a B2B lead generation service that positions firms as front‑runners in their sectors. It uses a
  multi‑channel strategy, cutting‑edge technology and a team of experts to deliver high‑quality leads, improve sales pipelines,
  and support business growth worldwide. The company emphasizes honesty, professional development, and tailored solutions
  for clients seeking to increase revenue and market presence.
url: https://artifacts.apis.io/duoleads-com/apis.yml
x-type: company
x-source: harvest:mcp-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-11-06 (modular-v1; was harvest)
accessModel:
  pricing: paid
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Paid
  confidence: low
  source:
  - plans
  - security
  generated: '2026-11-06'
  method: derived
specificationVersion: '0.20'
created: '2026-11-06'
modified: '2026-11-06'
tags:
- B2B
- Lead Generation
- Marketing
- Sales
- Technology
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Plans
  url: plans/duoleads-com-plans-pricing.yml
- type: Vocabulary
  url: vocabulary/duoleads-com-vocabulary.yml
- type: Conformance
  url: conformance/duoleads-com-conformance.yml
- type: LLMsTxt
  url: llms/duoleads-com-llms.txt
- type: AgentCard
  url: a2a/duoleads-com-a2a.yml
- type: Hosts
  url: hosts/duoleads-com-hosts.yml
- type: Vendors
  url: vendors/duoleads-com-vendors.yml
- type: SDKs
  url: packages/duoleads-com-packages.yml
- type: Packages
  url: packages/duoleads-com-packages.yml
- type: TermsOfService
  url: https://api.duoleads.com/terms
- type: Support
  url: https://duoleads.com/pages/help/
- type: SignUp
  url: https://duoleads.com/pages/register-page/
- type: PrivacyPolicy
  url: https://api.duoleads.com/privacy
- type: Pricing
  url: https://duoleads.com/pages/pricing-classic/
- type: Blog
  url: https://duoleads.com/blog/
- type: APIReference
  url: https://api.duoleads.com/docs
- type: DomainSecurity
  url: security/duoleads-com-domain-security.yml
- type: Website
  url: https://duoleads.com/
apis:
- name: Duo Data Utilities API
  description: Data utilities API providing IBAN, ISIN, VAT, Tax ID, Barcode, Timezone, Geo and other identifier lookups via
    GET requests.
  humanURL: https://api.duoleads.com/docs
  baseURL: https://api.duoleads.com
  properties:
  - type: OpenAPI
    url: openapi/duoleads-com-openapi.json
  aid: duoleads-com:duo-data-utilities-api
x-enrichment:
  date: '2026-11-06'
  status: enriched
  artifacts_added: 18
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

Duo Leads API — frequently asked questions

Does Duo Leads have an API?

Yes. APIs.io lists 1 API from Duo Leads, including Duo Data Utilities API.

Is there an OpenAPI specification for the Duo Leads API?

Yes. APIs.io indexes 1 OpenAPI specification for Duo Leads, each linked for download from this page.

How much does the Duo Leads API cost?

Duo Leads publishes its prices; its Prospecting Services Starter plan is $59.99 as of 2026-11-06. APIs.io lists 11 pricing plans for Duo Leads, with each plan's price, limits and inclusions under Pricing on this page.

Is the Duo Leads API ready for AI agents?

Duo Leads has a Kin Score of 37.4 out of 100 (thin) and an Agent Readiness score of 21.8 (agent-aware), scored by API Evangelist on 2026-11-06.

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