Pylon (formerly Braid Lending)

Pylon (formerly Braid Lending) is an AI-native mortgage infrastructure company founded in 2022 and headquartered in New York, New York, backed by investors including 500 Global and Citi. Pylon operates as "America's mortgage rails," an API-first, MCP-native platform that lets brokers, fintechs, lenders, and banks build and automate mortgage origination end to end — from application through underwriting, decisioning, compliance, and capital markets settlement. Every aspect of mortgage fulfillment is powered by APIs, complemented by a white-label "Elements" UI component library for embedding fully digital, autonomous mortgage experiences. The public developer surface (API reference, integration guides, and a live playground) is gated behind a developer-access request form, so no public OpenAPI, SDKs, or hosted docs were discoverable during enrichment.

Pylon (formerly Braid Lending) is profiled on the APIs.io network. Tagged areas include Company, Mortgage, Lending, Fintech, and Mortgage Origination.

Pylon (formerly Braid Lending)’s developer surface includes engineering blog, support, and 9 more developer resources.

🌐 Visit website 📡 Source on GitHub

14.0/100 minimal ▬ flat Agent 4/100 human only Full breakdown ↓
scored 2026-07-27 · rubric v0.5

0 APIs

CompanyMortgageLendingFintechMortgage OriginationCapital MarketsComplianceAPI-FirstMCP-Native

Kin Score

Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5

Composite quality — 14.0/100 · minimal

Contract Quality 0.0 / 25

Developer Ergonomics 3.0 / 20

Commercial Clarity 4.2 / 20

Operational Transparency 0.0 / 13

Governance 0.0 / 12

Discoverability 6.8 / 10

Agent readiness — 4/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 15

MCP Server 0 / 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

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/braid-lending: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

Get Started 1

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

WellKnown

WellKnown

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

Support

Support

Commercial 2

Pricing, plans, and the legal terms of use

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 5

The organization behind the API

Website

Website

Blog

Blog

LinkedIn

Twitter

Twitter

Crunchbase

Crunchbase

Source (apis.yml)

aid: braid-lending
name: Pylon (formerly Braid Lending)
description: Pylon (formerly Braid Lending) is an AI-native mortgage infrastructure company founded in 2022 and headquartered
  in New York, New York, backed by investors including 500 Global and Citi. Pylon operates as "America's mortgage rails,"
  an API-first, MCP-native platform that lets brokers, fintechs, lenders, and banks build and automate mortgage origination
  end to end — from application through underwriting, decisioning, compliance, and capital markets settlement. Every aspect
  of mortgage fulfillment is powered by APIs, complemented by a white-label "Elements" UI component library for embedding
  fully digital, autonomous mortgage experiences. The public developer surface (API reference, integration guides, and a live
  playground) is gated behind a developer-access request form, so no public OpenAPI, SDKs, or hosted docs were discoverable
  during enrichment.
url: https://raw.githubusercontent.com/api-evangelist/braid-lending/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- 500-global
x-tier: stub
x-tier-reason: portfolio-lead
x-rebrand: Braid Lending is now Pylon (pylonlending.com)
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
image: https://pylonwp.wpenginepowered.com/wp-content/uploads/2026/03/Pylon-featured-image.png
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-18'
tags:
- Company
- Mortgage
- Lending
- Fintech
- Mortgage Origination
- Capital Markets
- Compliance
- API-First
- MCP-Native
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: https://www.pylonlending.com
- type: DeveloperPortal
  url: https://www.pylonlending.com/developers/
- type: Blog
  url: https://www.pylonlending.com/resources/
- type: Support
  url: https://www.pylonlending.com/contact/
- type: TermsOfService
  url: https://www.pylonlending.com/terms/
- type: PrivacyPolicy
  url: https://www.pylonlending.com/privacy/
- type: LinkedIn
  url: https://www.linkedin.com/company/pylon-lending
- type: Twitter
  url: https://twitter.com/pylonlending
- type: Crunchbase
  url: https://www.crunchbase.com/organization/braid-75b6
- type: DomainSecurity
  url: security/braid-lending-domain-security.yml
- type: WellKnown
  url: well-known/braid-lending-well-known.yml
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence