CenturyLink (Lumen Technologies)

CenturyLink is the residential broadband and home services brand of Lumen Technologies, a Fortune 500 telecommunications provider operating one of the largest fiber networks in North America. Following the Level 3 acquisition and rebrand to Lumen, CenturyLink's developer surface is exposed through the Lumen Developer Center, which publishes REST APIs secured by OAuth 2.0 for enterprise location qualification, quote-to-order, provisioning, billing, notifications, CDN and edge compute, DDoS mitigation, and Public Sector networking products. The production API gateway answers at api.lumen.com, but no OpenAPI, AsyncAPI or GraphQL contract is published anonymously: the Developer Center is a module-federation single-page app that returns the same HTML shell for every path and loads its specifications from a sign-in-gated service.

CenturyLink (Lumen Technologies) is listed with 5 APIs on the APIs.io network. Tagged areas include Broadband, Connectivity, Edge, Fiber, and Lumen.

CenturyLink (Lumen Technologies)’s developer surface includes API reference, documentation, getting-started guide, support, engineering blog, authentication, and 21 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

27.7/100 thin ▬ flat Agent 8/100 agent aware Front door AI 2/6 trace Heartbeat 70/100 alive Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessEnterprise

5 APIs

Broadband Connectivity Edge FiberLumenNetworks OAuthQuantum FiberSD-WAN Telecommunications Fortune 500 Authentication

Kin Score

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

Composite quality — 27.7/100 · thin

Contract Quality 0.0 / 21

Developer Ergonomics 5.3 / 17

Access Clarity 7.2 / 17

Operational Transparency 2.6 / 11

Contract Governance 1.9 / 10

Discoverability 5.9 / 9

Regulatory Posture 3.9 / 15

Agent readiness — 8/100 · agent aware

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 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 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

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 Telecommunications 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
MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship
Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author
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)
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
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 0.0 — up to +25.0 composite points
Developer Ergonomics scores 31.0 — up to +13.8 composite points
Access Clarity scores 42.1 — up to +11.6 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/centurylink/apis.yml: open an issue on github.com/api-evangelist/centurylink 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 →

Markets this provider is in provisional

The Kin Score Market layer reads a provider inside its market: its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted: not part of the Kin Score or agent readiness.

Market	Position	Depth	Registered MCP server	Declares compatibility
Network Edge (CDN, networking, peering, edge compute)	undeclared	-	-	-

Registered MCP server and declares compatibility are report only — not weighted. Undeclared means we found nothing we can read, so there is no number: we never infer integrations.

Standards implemented 1

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.

OAuth

tagged — the provider's own APIs.json carries the standard as a tag; implementation not verified

APIs 5

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

Lumen Developer Center APIs

The Lumen Developer Center publishes Lumen's enterprise API catalog, including Location, Quoting, Ordering, Service Inventory, Billing, Outbound Notification, and Trouble Ticket...

Lumen API Marketplace

The Lumen API Marketplace was the enterprise catalog where partners and customers browsed APIs and requested credentials. It has been folded into the Lumen Developer Center and ...

Lumen OpenAPI Services (Level 3 legacy)

The Level 3 / Lumen OpenAPI Services portal provided OpenAPI-described REST services such as the Lumen Location API. The portal is GONE: developer.level3.com no longer resolves ...

Lumen Public Sector API Center

The Public Sector API Center offers government-tailored REST APIs for Lumen network services, enabling federal, state, and local agencies to programmatically order, provision, a...

Quantum Fiber Residential Services

Quantum Fiber is Lumen's residential multi-gigabit fiber brand that supersedes CenturyLink in markets with fiber deployment, with account and service management exposed through ...

CenturyLink (Lumen Technologies) API pricing

Prices published by CenturyLink (Lumen Technologies), read 2026-09-05 from developer.lumen.com/.

Plan	Price
Partner / Enterprise API Access enterprise	—
Public Sector API Center enterprise	—

Plan details, limits and sources →

Rate limits

Lumen API Marketplace (per OAuth client): see partner agreement / OAuth client configuration varies
Public Sector API Center (per agency contract): see public sector contract varies

Rate-limit details →

Pricing Plans 1

Published pricing tiers and plan structures.

Centurylink Plans Pricing

2 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Centurylink Rate Limits

2 limits

RATE LIMITS

FinOps 1

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

Centurylink Finops

FINOPS

Security Posture 2

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

Centurylink Authentication

3 schemes

SECURITY

Centurylink Domain Security

TLSv1.2 · HSTS · DMARC

SECURITY

Press 5

Recent news and press coverage referencing this provider.

Press Releases

How Lumen and Corning Are Enabling AI with Fiber

CenturyLink completes acquisition of Level 3

CenturyLink Data Center Sale Continues Trend

Finance Press

Resources

Get Started 2

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

Documentation 2

Reference material describing how the API behaves

APIReference

APIReference

Documentation

Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

Conventions

ErrorCatalog

Lifecycle

Conformance

Components

Build 3

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Packages

Packages

SDKs

SDKs

Access & Security 2

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

Operate 2

Status, limits, changes, and where to get help

Support

Support

RateLimits

RateLimits

Commercial 4

Pricing, plans, and the legal terms of use

FinOps

TermsOfService

PrivacyPolicy

Plans

Company 3

The organization behind the API

Website

Website

Blog

Blog

LinkedIn

Other 3

Properties that don't map to a standard resource type

Corporate

Corporate

Developer

Developer

QuantumFiber

QuantumFiber

Source (apis.yml)

aid: centurylink
url: https://raw.githubusercontent.com/api-evangelist/centurylink/refs/heads/main/apis.yml
name: CenturyLink (Lumen Technologies)
tags:
- Broadband
- Connectivity
- Edge
- Fiber
- Lumen
- Networks
- OAuth
- Quantum Fiber
- SD-WAN
- Telecommunications
- Fortune 500
- Authentication
tags_raw:
- Broadband
- Connectivity
- Edge
- Fiber
- Lumen
- Network
- OAuth 2.0
- Quantum Fiber
- SD-WAN
- Telecom
- Fortune 500
- Authentication
type: Index
deliveryModel:
  model: unknown
  open_source: false
  commercial: false
  callable_host: false
  label: Delivery model not determined — needs a product licence on record
  confidence: low
  source:
  - none
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: enterprise
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Enterprise
  confidence: high
  probe_state: covered
  source:
  - plans
  - authentication
  - rate-limits
  - security
  generated: '2026-11-06'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/centurylink.png
access: 3rd-Party
created: '2026-03-23'
modified: '2026-09-05'
position: Producing
specificationVersion: '0.23'
description: 'CenturyLink is the residential broadband and home services brand of Lumen Technologies, a Fortune 500 telecommunications
  provider operating one of the largest fiber networks in North America. Following the Level 3 acquisition and rebrand to
  Lumen, CenturyLink''s developer surface is exposed through the Lumen Developer Center, which publishes REST APIs secured
  by OAuth 2.0 for enterprise location qualification, quote-to-order, provisioning, billing, notifications, CDN and edge compute,
  DDoS mitigation, and Public Sector networking products. The production API gateway answers at api.lumen.com, but no OpenAPI,
  AsyncAPI or GraphQL contract is published anonymously: the Developer Center is a module-federation single-page app that
  returns the same HTML shell for every path and loads its specifications from a sign-in-gated service.'
apis:
- aid: centurylink:lumen-developer-center
  name: Lumen Developer Center APIs
  tags:
  - Enterprise
  - Lumen
  - OAuth
  - Partners
  - REST
  - Authentication
  tags_raw:
  - Enterprise
  - Lumen
  - OAuth 2.0
  - Partner
  - REST
  - Authentication
  humanURL: https://developer.lumen.com/
  baseURL: https://api.lumen.com
  properties:
  - url: https://developer.lumen.com/
    type: Website
  - url: https://developer.lumen.com/devcenter/overview
    type: APIReference
  - url: https://developer.lumen.com/devcenter/getting-started
    type: GettingStarted
  - url: https://developer.lumen.com/devcenter/support
    type: Support
  - url: https://docs.lumen.com/lumen-connect/apis/registering-for-api-access/
    type: Authentication
  - url: authentication/centurylink-authentication.yml
    type: Authentication
  - url: conventions/centurylink-conventions.yml
    type: Conventions
  - url: errors/centurylink-problem-types.yml
    type: ErrorCatalog
  description: 'The Lumen Developer Center publishes Lumen''s enterprise API catalog, including Location, Quoting, Ordering,
    Service Inventory, Billing, Outbound Notification, and Trouble Ticket APIs. All APIs use OAuth 2.0 Client Credentials
    against api.lumen.com and require registration for API access plus administrator enablement of the API products an API
    key covers. Base URL confirmed by live probe on 2026-09-05: the token endpoints https://api.lumen.com/oauth/v1/token and
    /oauth/v2/token both answer with real OAuth errors. The v2 gateway identifies itself as Apigee. The former /apis index
    at developer.lumen.com now 302s to the site root; the shipped SPA route table declares only /devcenter/home, /devcenter/getting-started,
    /devcenter/support, /devcenter/overview and /devcenter/docs/:category/:section?/:slug?.'
- aid: centurylink:lumen-api-marketplace
  name: Lumen API Marketplace
  tags:
  - API Marketplace
  - Enterprise
  - Partners
  tags_raw:
  - API Marketplace
  - Enterprise
  - Partner
  humanURL: https://developer.lumen.com/
  properties:
  - url: https://developer.lumen.com/
    type: Website
  - url: https://docs.lumen.com/lumen-connect/apis/
    type: APIKeys
  description: The Lumen API Marketplace was the enterprise catalog where partners and customers browsed APIs and requested
    credentials. It has been folded into the Lumen Developer Center and Lumen Connect. As of 2026-09-05 the apimarketplace.lumen.com
    host still answers, but it presents a TLS certificate for CN=developer.centurylink.com that expired 2026-01-15, so an
    ordinary browser refuses the connection before its 301 to developer.lumen.com is ever followed. Its two former pointers
    have been removed from this record and the finding is captured in lifecycle/centurylink-lifecycle.yml. API key creation,
    editing, product scoping and client-secret reset now live in Lumen Connect and are documented on docs.lumen.com.
- aid: centurylink:lumen-openapi-services
  name: Lumen OpenAPI Services (Level 3 legacy)
  tags:
  - Connectivity
  - Level 3
  - Location
  - OpenAPI
  humanURL: https://docs.lumen.com/lumen-connect/apis/
  properties:
  - url: https://docs.lumen.com/lumen-connect/apis/
    type: Documentation
  description: 'The Level 3 / Lumen OpenAPI Services portal provided OpenAPI-described REST services such as the Lumen Location
    API. The portal is GONE: developer.level3.com no longer resolves in DNS (probed 2026-09-05), so both of this entry''s
    former pointers were dead and have been removed. The surviving public documentation for API access to the successor products
    is the Lumen Connect APIs section on docs.lumen.com. No OpenAPI document from this family is published at any reachable
    URL.'
- aid: centurylink:lumen-public-sector-api-center
  name: Lumen Public Sector API Center
  tags:
  - Federal
  - Government
  - Public Sector
  - State and Local
  humanURL: https://www.lumen.com/en-us/public-sector.html
  properties:
  - url: https://www.lumen.com/en-us/public-sector.html
    type: Solutions
  description: The Public Sector API Center offers government-tailored REST APIs for Lumen network services, enabling federal,
    state, and local agencies to programmatically order, provision, and monitor connectivity and managed services. Both pointers
    previously carried here were dead as of 2026-09-05 — blog.centurylink.com no longer resolves in DNS and /en-us/solutions/public-sector.html
    returns 404 — and have been replaced with the live public-sector section.
- aid: centurylink:quantum-fiber
  name: Quantum Fiber Residential Services
  tags:
  - Broadband
  - Fiber
  - Residential
  humanURL: https://www.quantumfiber.com/
  properties:
  - url: https://www.quantumfiber.com/
    type: Website
  - url: https://www.centurylink.com/
    type: LegacyBrand
  description: Quantum Fiber is Lumen's residential multi-gigabit fiber brand that supersedes CenturyLink in markets with
    fiber deployment, with account and service management exposed through consumer web and mobile apps rather than a public
    developer API.
common:
- type: FinOps
  url: finops/centurylink-finops.yml
- type: Website
  url: https://www.centurylink.com
- type: Corporate
  url: https://www.lumen.com/
- type: Developer
  url: https://developer.lumen.com/
- type: DeveloperPortal
  url: https://developer.lumen.com/
- type: APIReference
  url: https://developer.lumen.com/devcenter/overview
- type: Documentation
  url: https://docs.lumen.com/
- type: GettingStarted
  url: https://developer.lumen.com/devcenter/getting-started
- type: Support
  url: https://developer.lumen.com/devcenter/support
- type: Blog
  url: https://www.lumen.com/blog-and-news/en-us/home
- type: GitHubOrganization
  url: https://github.com/centurylink
- type: LinkedIn
  url: https://www.linkedin.com/company/lumentechnologies
- type: QuantumFiber
  url: https://www.quantumfiber.com/
- type: TermsOfService
  url: https://www.lumen.com/en-us/about/legal/api-developer-terms-and-conditions.html
- type: PrivacyPolicy
  url: https://www.lumen.com/en-us/about/legal/privacy-notice.html
- type: LLMsTxt
  url: llms/centurylink-llms.txt
- type: Authentication
  url: authentication/centurylink-authentication.yml
- type: Conventions
  url: conventions/centurylink-conventions.yml
- type: ErrorCatalog
  url: errors/centurylink-problem-types.yml
- type: Lifecycle
  url: lifecycle/centurylink-lifecycle.yml
- type: Conformance
  url: conformance/centurylink-conformance.yml
- type: Packages
  url: packages/centurylink-packages.yml
- type: SDKs
  url: packages/centurylink-packages.yml
- type: Components
  url: components/centurylink-components.yml
- type: Plans
  url: plans/centurylink-plans-pricing.yml
- type: RateLimits
  url: rate-limits/centurylink-rate-limits.yml
- type: DomainSecurity
  url: security/centurylink-domain-security.yml
x-enrichment:
  date: '2026-09-05'
  status: enriched
  artifacts_added: 12
  pass: local-v3
x-coverage:
  state: covered
  reason: covered
  detail: 'Lumen publishes a live OAuth 2.0 gateway at api.lumen.com and two first-party llms.txt files, but no machine-readable
    API contract is anonymously reachable: the Developer Center at developer.lumen.com is a Vue module-federation SPA that
    returns an identical 11,800-byte HTML shell for every path, including to Googlebot, and loads its OpenAPI specs from a
    sign-in-gated content service.'
  evidence:
  - url: https://api.lumen.com/oauth/v2/token
    status: 401
  - url: https://www.lumen.com/llms.txt
    status: 200
  - url: https://developer.lumen.com/openapi.json
    status: 200
  - url: https://developer.lumen.com/apis
    status: 302
  checked: '2026-09-05'
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

CenturyLink (Lumen Technologies) API — frequently asked questions

Does CenturyLink (Lumen Technologies) have an API?

Yes. APIs.io lists 5 APIs from CenturyLink (Lumen Technologies), including Lumen Developer Center APIs, Lumen API Marketplace and Lumen OpenAPI Services (Level 3 legacy), and 2 more.

How do I authenticate with the CenturyLink (Lumen Technologies) API?

CenturyLink (Lumen Technologies) uses bearer-token authentication (3 schemes). The details are profiled on APIs.io as Centurylink Authentication.

How much does the CenturyLink (Lumen Technologies) API cost?

APIs.io lists 2 pricing plans for CenturyLink (Lumen Technologies), with each plan's price, limits and inclusions under Pricing on this page.

Is the CenturyLink (Lumen Technologies) API ready for AI agents?

CenturyLink (Lumen Technologies) has a Kin Score of 27.7 out of 100 (thin) and an Agent Readiness score of 7.9 (agent-aware), scored by API Evangelist on 2026-11-06.

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