Stash website screenshot

Stash

Stash is an investing and banking app that enables fractional share investing, automated portfolio building, bank account management with a Stock-Back debit card, custodial accounts for minors, IRA retirement accounts, and financial education content. Stash serves over one million customers and has $4.3 billion under management, offering subscription-based access to a hybrid DIY and robo-advisor investing experience starting at $3 per month.

Stash publishes 1 API on the APIs.io network. Tagged areas include Fintech, Investing, Banking, Fractional Shares, and Portfolio Management.

Stash’s developer surface includes status page, engineering blog, and 10 more developer resources.

🌐 Visit website 📡 Source on GitHub
20.8/100 emerging ▬ flat Agent 3/100 human only Full breakdown ↓
scored 2026-08-05 · rubric v0.9.1
AccessPaid
1 APIs
FintechInvestingBankingFractional SharesPortfolio ManagementFinancial EducationRobo-AdvisorStock-BackCustodial AccountsIRA

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-08-05 · rubric v0.9.1
Composite quality — 20.8/100 · emerging
Contract Quality 0.0 / 25
Developer Ergonomics 0.4 / 20
Commercial Clarity 11.6 / 20
Operational Transparency 1.4 / 13
Governance 0.0 / 12
Discoverability 6.9 / 10
Agent readiness — 3/100 · human only
Machine-Readable Contract 0 / 18
Agentic Access Contract 0 / 10
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 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
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/stash: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 1

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

Stash Investing API

Stash provides a mobile-first investing and banking platform enabling fractional share purchases, automated smart portfolio management, retirement accounts, and a Stock-Back deb...

Pricing Plans 1

Published pricing tiers and plan structures.

Plans

2 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Rate Limits

0 limits

RATE LIMITS

FinOps 1

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

Finops

FINOPS

Security Posture 2

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

Stash Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Stash Trust Center

PCI DSS

SECURITY

Resources

Access & Security 3

Authentication, authorization, and security posture

TrustCenter
TrustCenter
 DomainSecurity
DomainSecurity
 Security
Security

Operate 2

Status, limits, changes, and where to get help

RateLimits
RateLimits
 Status
Status

Commercial 4

Pricing, plans, and the legal terms of use

Plans
Plans
 FinOps
FinOps
 TermsOfService
TermsOfService
 PrivacyPolicy
PrivacyPolicy

Company 3

The organization behind the API

Blog
Blog
 EngineeringBlog
EngineeringBlog
 Press
Press

Source (apis.yml)

apis.yml Raw ↑ 
aid: stash
name: Stash
description: Stash is an investing and banking app that enables fractional share investing, automated portfolio building,
  bank account management with a Stock-Back debit card, custodial accounts for minors, IRA retirement accounts, and financial
  education content. Stash serves over one million customers and has $4.3 billion under management, offering subscription-based
  access to a hybrid DIY and robo-advisor investing experience starting at $3 per month.
accessModel:
  pricing: paid
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Paid
  confidence: medium
  source:
  - plans
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/stash.png
url: https://raw.githubusercontent.com/api-evangelist/stash/refs/heads/main/apis.yml
type: Index
tags:
- Fintech
- Investing
- Banking
- Fractional Shares
- Portfolio Management
- Financial Education
- Robo-Advisor
- Stock-Back
- Custodial Accounts
- IRA
created: '2026-06-13'
modified: '2026-06-13'
specificationVersion: '0.19'
apis:
- aid: stash:stash-investing-api
  name: Stash Investing API
  description: Stash provides a mobile-first investing and banking platform enabling fractional share purchases, automated
    smart portfolio management, retirement accounts, and a Stock-Back debit card. The platform is consumer-focused without
    a public developer API portal; programmatic access to Stash account data is available through Open Banking aggregators
    such as Plaid that support Stash connectivity.
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://www.stash.com
  baseURL: https://api.stashinvest.com
  tags:
  - Investing
  - Banking
  - Fractional Shares
  - Portfolio
  - IRA
  - Custodial Accounts
  - Stock-Back
  properties:
  - type: Documentation
    url: https://www.stash.com/learn
  - type: TermsOfService
    url: https://www.stash.com/terms-of-service
  - type: PrivacyPolicy
    url: https://www.stash.com/privacy-policy
  - type: Security
    url: https://www.stashinvest.com/security
  - type: Status
    url: https://status.stash.com
  - type: Blog
    url: https://www.stash.com/learn
  - type: EngineeringBlog
    url: https://medium.com/stash-engineering
  - type: Press
    url: https://www.stash.com/press
  - type: Plans
    url: https://raw.githubusercontent.com/api-evangelist/stash/refs/heads/main/plans/plans.yml
  - type: RateLimits
    url: https://raw.githubusercontent.com/api-evangelist/stash/refs/heads/main/rate-limits/rate-limits.yml
  - type: FinOps
    url: https://raw.githubusercontent.com/api-evangelist/stash/refs/heads/main/finops/finops.yml
  contact:
  - FN: Stash Support
    url: https://www.stash.com/support
    email:
    - email protected
common:
- type: TrustCenter
  url: security/stash-trust-center.yml
- type: DomainSecurity
  url: security/stash-domain-security.yml
- type: Plans
  url: https://raw.githubusercontent.com/api-evangelist/stash/refs/heads/main/plans/plans.yml
- type: RateLimits
  url: https://raw.githubusercontent.com/api-evangelist/stash/refs/heads/main/rate-limits/rate-limits.yml
- type: FinOps
  url: https://raw.githubusercontent.com/api-evangelist/stash/refs/heads/main/finops/finops.yml
- type: Status
  url: https://status.stash.com
- type: TermsOfService
  url: https://www.stash.com/terms-of-service
- type: PrivacyPolicy
  url: https://www.stash.com/privacy-policy
- type: Security
  url: https://www.stashinvest.com/security
- type: Blog
  url: https://www.stash.com/learn
- type: EngineeringBlog
  url: https://medium.com/stash-engineering
- type: Press
  url: https://www.stash.com/press
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com