Flex

Flex is a financial‑technology bill‑payment app that lets consumers split rent, mortgage, car payments and everyday bills such as utilities, phone, internet and insurance. Users choose a second payment date while Flex pays the biller the full amount up‑front. The service includes a monthly membership fee, processing and split fees, and can report on‑time rent payments to the major credit bureaus.

Flex is profiled on the APIs.io network. Tagged areas include Bill Splitting, Rent Payments, Mortgage Payments, Car Payments, and Utilities.

Flex’s developer surface includes pricing, engineering blog, documentation, and 8 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

13.4/100 emerging Agent 6/100 agent aware Full breakdown ↓
scored 2026-10-31 · rubric v0.25.0 · Show this score on your site →

0 APIs

Bill SplittingRent PaymentsMortgage PaymentsCar PaymentsUtilities Financial Technology Credit Reporting

Kin Score

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

Composite quality — 13.4/100 · emerging

Contract Quality 0.0 / 21

Developer Ergonomics 2.0 / 17

Access Clarity 5.4 / 17

Operational Transparency 0.0 / 11

Contract Governance 0.0 / 10

Discoverability 4.3 / 9

Regulatory Posture 1.7 / 15

Agent readiness — 6/100 · agent aware

Machine-Readable Contract 0 / 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 4 / 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

Regulatory Posture applies to this provider. Its tags matched the Energy & Utilities 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
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)
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

11 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 11.9 — up to +17.6 composite points
Access Clarity scores 31.6 — up to +13.7 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/getflex-com/apis.yml: open an issue on github.com/api-evangelist/getflex-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 →

Security Posture 1

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

Getflex Com Domain Security

TLSv1.3 · HSTS · DNSSEC · DMARC

SECURITY

Resources

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Commercial 3

Pricing, plans, and the legal terms of use

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Pricing

Pricing

Company 3

The organization behind the API

Newsroom

Newsroom

Blog

Blog

Website

Website

Other 2

Properties that don't map to a standard resource type

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: getflex-com
name: Flex
image: https://cdn.prod.website-files.com/69a1b0e50ebde6e2633ccfc5/69cd3d7f3d608d02b4a2858a_logo-seo%20(1)%201.svg
description: Flex is a financial‑technology bill‑payment app that lets consumers split rent, mortgage, car payments and everyday
  bills such as utilities, phone, internet and insurance. Users choose a second payment date while Flex pays the biller the
  full amount up‑front. The service includes a monthly membership fee, processing and split fees, and can report on‑time rent
  payments to the major credit bureaus.
url: https://raw.githubusercontent.com/api-evangelist/getflex-com/refs/heads/main/apis.yml
x-type: company
x-source: harvest:vc-portfolio
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-22 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-10-22'
modified: '2026-10-22'
tags:
- Bill Splitting
- Rent Payments
- Mortgage Payments
- Car Payments
- Utilities
- Financial Technology
- Credit Reporting
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: LLMsTxt
  url: llms/getflex-com-llms.txt
- type: Hosts
  url: hosts/getflex-com-hosts.yml
- type: Vendors
  url: vendors/getflex-com-vendors.yml
- type: TermsOfService
  url: https://getflex.com/legal/terms-referral-program
- type: PrivacyPolicy
  url: https://getflex.com/legal/privacy
- type: Pricing
  url: https://getflex.com/legal/pricing-updates-faq
- type: Newsroom
  url: https://getflex.com/blog-page/newsroom
- type: Blog
  url: https://getflex.com/blog
- type: Documentation
  url: https://help.getflex.com/
- type: DomainSecurity
  url: security/getflex-com-domain-security.yml
- type: Website
  url: https://www.getflex.com
apis: []
x-backed-by:
- coatue
x-coverage:
  state: none
  reason: not-a-software-company
  detail: No public API documentation or machine‑readable contract was found on getflex.com.
  evidence:
  - url: https://getflex.com/openapi.json
    status: 404
  checked: '2026-10-22'
x-enrichment:
  date: '2026-10-22'
  status: enriched
  artifacts_added: 10
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

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