LoopUp

LoopUp helps multinational enterprises consolidate how they buy and manage their global Microsoft Teams telephony, offering phone numbers and full cloud-based PSTN-replacement service in over 100 countries. It provides a single consistent global solution, integrating design, deployment, service delivery and support, all integrated with Microsoft Teams. LoopUp is headquartered in London with operations worldwide, delivering unified communications and contact center capabilities.

LoopUp is profiled on the APIs.io network. Tagged areas include Company, Unified Communications, Microsoft Teams, Cloud Telephony, and Global Services.

LoopUp’s developer surface includes support, engineering blog, and 8 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

14.5/100 emerging Agent 18/100 agent aware Full breakdown ↓
scored 2026-10-31 · rubric v0.25.0 · Show this score on your site →

0 APIs

Company Unified Communications Microsoft Teams Cloud TelephonyGlobal Services

Kin Score

Kin Score How this is scored →
scored 2026-10-31 · rubric v0.25.0

Composite quality — 14.5/100 · emerging

Contract Quality 0.0 / 21

Developer Ergonomics 1.2 / 17

Access Clarity 4.0 / 17

Operational Transparency 2.9 / 11

Contract Governance 0.0 / 10

Discoverability 4.1 / 9

Regulatory Posture 2.4 / 15

Agent readiness — 18/100 · 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 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 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

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
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
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)

9 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 7.1 — up to +18.6 composite points
Access Clarity scores 23.7 — up to +15.3 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/loopup/apis.yml: open an issue on github.com/api-evangelist/loopup 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 →

Security Posture 1

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

Loopup Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Get Started 1

Portal, sign-up, and the first successful call

Login

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

WellKnown

WellKnown

Access & Security 2

Authentication, authorization, and security posture

SecurityTxt

SecurityTxt

DomainSecurity

DomainSecurity

Operate 2

Status, limits, changes, and where to get help

Support

Support

StatusPage

StatusPage

Commercial 1

Pricing, plans, and the legal terms of use

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

Hosts

Hosts

Source (apis.yml)

aid: loopup
name: LoopUp
image: https://loopup.com/app/uploads/2014/07/loopup-logo.png
description: LoopUp helps multinational enterprises consolidate how they buy and manage their global Microsoft Teams telephony,
  offering phone numbers and full cloud-based PSTN-replacement service in over 100 countries. It provides a single consistent
  global solution, integrating design, deployment, service delivery and support, all integrated with Microsoft Teams. LoopUp
  is headquartered in London with operations worldwide, delivering unified communications and contact center capabilities.
url: https://raw.githubusercontent.com/api-evangelist/loopup/refs/heads/main/apis.yml
x-type: company
x-source: harvest:vc-portfolio
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-25 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-10-25'
modified: '2026-10-25'
tags:
- Company
- Unified Communications
- Microsoft Teams
- Cloud Telephony
- Global Services
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: SecurityTxt
  url: well-known/loopup-status-security.txt
- type: WellKnown
  url: well-known/loopup-well-known.yml
- type: Hosts
  url: hosts/loopup-hosts.yml
- type: Support
  url: https://support.loopup.com/s/?language=en_US
- type: StatusPage
  url: https://status.loopup.com/
- type: PrivacyPolicy
  url: https://loopup.com/legal/privacy-policy/
- type: Login
  url: https://loopup.com/us/sign-in/
- type: Blog
  url: https://loopup.com/resource-type/blog/
- type: DomainSecurity
  url: security/loopup-domain-security.yml
- type: Website
  url: https://www.loopup.com
apis: []
x-backed-by:
- adaraventurepartners
x-coverage:
  state: unreadable
  reason: no-machine-readable-spec
  detail: No OpenAPI, AsyncAPI, GraphQL, or other machine-readable spec found despite probing API host.
  evidence:
  - url: https://api.loopup.com/openapi.json
    status: unreachable
  checked: '2026-10-25'
x-enrichment:
  date: '2026-10-25'
  status: enriched
  artifacts_added: 10
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

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