Prosperity Bank

Prosperity Bank is a Texas-chartered commercial bank (member FDIC, NMLS ID 466414) and the banking subsidiary of Prosperity Bancshares, Inc. (NYSE: PB), a Houston, Texas based regional financial holding company with roughly $37-43 billion in total assets and 300-plus full-service branches across Texas and central Oklahoma. It offers consumer and commercial banking, treasury management, mortgage, and wealth services, and has grown largely through acquisitions (LegacyTexas, Lone Star State Bancshares, American Bank Holding, Southwest Bancshares, Stellar Bancorp). On open finance, Prosperity Bank operates no first-party public developer portal or documented API: developer. and api. subdomains do not resolve, and no /developers or /api pages exist. Consumer-permissioned account and transaction data is reachable only through third-party aggregators (Finicity/Mastercard Open Banking, Plaid, and similar), not a directly published bank API. No FDX-conformant data-access API or CFPB Section 1033 posture is publicly documented by the bank as of this review.

Prosperity Bank is profiled on the APIs.io network. Tagged areas include Financial Services, Banking, United States, Regional Bank, and Texas.

Prosperity Bank’s developer surface includes support and 6 more developer resources.

🌐 Visit website 📡 Source on GitHub

14.6/100 minimal ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-07-27 · rubric v0.5

0 APIs

Financial ServicesBankingUnited StatesRegional BankTexasOpen FinanceData Aggregation

Kin Score

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

Composite quality — 14.6/100 · minimal

Contract Quality 0.0 / 25

Developer Ergonomics 0.9 / 20

Commercial Clarity 4.2 / 20

Operational Transparency 0.0 / 13

Governance 0.0 / 12

Discoverability 6.8 / 10

Agent readiness — 0/100 · 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 0 / 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/prosperity-bank: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

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 2

The organization behind the API

Website

Website

LinkedIn

Source (apis.yml)

aid: prosperity-bank
url: https://raw.githubusercontent.com/api-evangelist/prosperity-bank/refs/heads/main/apis.yml
name: Prosperity Bank
kind: company
description: 'Prosperity Bank is a Texas-chartered commercial bank (member FDIC, NMLS ID 466414) and the banking subsidiary
  of Prosperity Bancshares, Inc. (NYSE: PB), a Houston, Texas based regional financial holding company with roughly $37-43
  billion in total assets and 300-plus full-service branches across Texas and central Oklahoma. It offers consumer and commercial
  banking, treasury management, mortgage, and wealth services, and has grown largely through acquisitions (LegacyTexas, Lone
  Star State Bancshares, American Bank Holding, Southwest Bancshares, Stellar Bancorp). On open finance, Prosperity Bank operates
  no first-party public developer portal or documented API: developer. and api. subdomains do not resolve, and no /developers
  or /api pages exist. Consumer-permissioned account and transaction data is reachable only through third-party aggregators
  (Finicity/Mastercard Open Banking, Plaid, and similar), not a directly published bank API. No FDX-conformant data-access
  API or CFPB Section 1033 posture is publicly documented by the bank as of this review.'
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
tags:
- Financial Services
- Banking
- United States
- Regional Bank
- Texas
- Open Finance
- Data Aggregation
created: '2026-07-23'
modified: '2026-07-23'
specificationVersion: '0.19'
apis: []
common:
- type: DomainSecurity
  url: security/prosperity-bank-domain-security.yml
- type: LLMsTxt
  url: llms/prosperity-bank-llms.txt
- type: Website
  url: https://www.prosperitybankusa.com/
- type: LinkedIn
  url: https://www.linkedin.com/company/prosperity-bank
- type: TermsOfService
  url: https://www.prosperitybankusa.com/terms-of-use
- type: PrivacyPolicy
  url: https://www.prosperitybankusa.com/privacy
- type: Support
  url: https://www.prosperitybankusa.com/contact-us
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com