Harness Wealth website screenshot

Harness Wealth

Harness — the company that launched as Harness Wealth, and today a wholly owned business of Multiplier, Inc. — is a New York City firm that runs an advisory platform for tax and wealth practices. It operates three connected surfaces: a marketplace that matches individuals with complex financial situations (equity compensation, liquidity events, business owners, real estate, high net worth) to vetted tax advisors; a client portal and workflow platform that tax firms run their engagements, documents, questionnaires and e-file on; and Harness Wealth Advisers, LLC, an SEC-registered investment adviser that recommends third-party advisers. Harness publishes no public developer program — there is no developer portal, API reference, OpenAPI/GraphQL/AsyncAPI specification, SDK, CLI or webhook documentation on any Harness host, and the product is delivered entirely as an end-user web application at app.harness.co.

Harness Wealth is profiled on the APIs.io network. Tagged areas include Company, Financial Services, Tax, Wealth Management, and Accounting.

Harness Wealth’s developer surface includes engineering blog, support, and 13 more developer resources.

13.3/100 emerging ▬ flat Agent 0/100 human only Front door AI 3/6 light saas Full breakdown ↓
scored 2026-10-04 · rubric v0.23.0
0 APIs
CompanyFinancial ServicesTaxWealth ManagementAccountingInvestment AdvisoryMarketplaceProfessional ServicesFintech

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-10-04 · rubric v0.23.0
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/.
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 github.com/api-evangelist/harness-wealth: open an issue to ask a question, or submit a pull request to add artifacts. 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.

Harness Wealth Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Get Started 1

Portal, sign-up, and the first successful call

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

Build 1

SDKs, sample code, and the tooling you integrate with

Access & Security 2

Authentication, authorization, and security posture

Operate 2

Status, limits, changes, and where to get help

Commercial 2

Pricing, plans, and the legal terms of use

Company 5

The organization behind the API

Other 1

Properties that don't map to a standard resource type

Source (apis.yml)

apis.yml Raw ↑
aid: harness-wealth
name: Harness Wealth
description: 'Harness — the company that launched as Harness Wealth, and today a wholly owned business of Multiplier, Inc.
  — is a New York City firm that runs an advisory platform for tax and wealth practices. It operates three connected surfaces:
  a marketplace that matches individuals with complex financial situations (equity compensation, liquidity events, business
  owners, real estate, high net worth) to vetted tax advisors; a client portal and workflow platform that tax firms run their
  engagements, documents, questionnaires and e-file on; and Harness Wealth Advisers, LLC, an SEC-registered investment adviser
  that recommends third-party advisers. Harness publishes no public developer program — there is no developer portal, API
  reference, OpenAPI/GraphQL/AsyncAPI specification, SDK, CLI or webhook documentation on any Harness host, and the product
  is delivered entirely as an end-user web application at app.harness.co.'
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: false
  label: Hosted service · you call their endpoint
  confidence: medium
  source:
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source:
  - security
  generated: '2026-09-02'
  method: derived
image: https://www.harness.co/assets/logo.svg
url: https://raw.githubusercontent.com/api-evangelist/harness-wealth/refs/heads/main/apis.yml
x-type: company
x-source: harvest:secondary-market
specificationVersion: '0.23'
created: '2026-08-22'
modified: '2026-08-22'
tags:
- Company
- Financial Services
- Tax
- Wealth Management
- Accounting
- Investment Advisory
- Marketplace
- Professional Services
- Fintech
tags_raw:
- Company
- Financial Services
- Tax
- Wealth Management
- Accounting
- Investment Advisory
- Marketplace
- Professional Services
- Fintech
- Financial-Services
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: DomainSecurity
  url: security/harness-wealth-domain-security.yml
- type: Website
  url: https://www.harness.co/
- type: About
  url: https://www.harness.co/about
- type: Blog
  url: https://www.harness.co/articles
- type: Support
  url: https://help.harness.co/
- type: Roadmap
  url: https://harness.canny.io/
- type: Login
  url: https://app.harness.co/app/
- type: GitHubOrganization
  url: https://github.com/harness-wealth
- type: TermsOfService
  url: https://www.harness.co/terms-of-service
- type: PrivacyPolicy
  url: https://www.harness.co/privacy-policy
- type: Disclosures
  url: https://www.harness.co/regulatory-disclosures
- type: Press
  url: https://www.harness.co/press
- type: LinkedIn
  url: https://linkedin.com/company/harnesswealth
- type: SecondaryMarket
  url: https://equityzen.com/company/harnesswealth/
- type: LLMsTxt
  url: llms/harness-wealth-llms.txt
x-identity:
  fetched: '2026-08-22'
  legal_entities:
  - Harness Tax LLC
  - Harness Wealth Advisers, LLC
  parent_company: Multiplier, Inc.
  headquarters: 205 Hudson St, 7th Floor, New York, NY 10013
  domains:
  - harness.co
  - harnesswealth.com
  note: harnesswealth.com 301s to https://www.harness.co/ (probed 2026-08-22, HTTP 200 at the redirect target). The harvest
    backlog recorded the secondary-market venue homepage (https://www.nasdaqprivatemarket.com/) as this company's Website;
    that pointer was wrong and has been replaced with the company's own site, with the venue recorded as SecondaryMarket against
    the EquityZen listing that names Harness Wealth directly.
x-enrichment:
  date: '2026-08-22'
  status: minimal
  artifacts_added: 4
  pass: local-v1
x-coverage:
  state: none
  reason: no-developer-program
  detail: Harness ships its tax-advisory platform only as an end-user web application at app.harness.co — api.harness.co,
    docs.harness.co and developer.harness.co do not resolve in DNS, the marketing site returns a hard 404 for /llms.txt, /openapi.json
    and every /.well-known/ path, and the only host that answers a spec probe is the client SPA, which returns the same 18,352-byte
    HTML shell for every unmatched path.
  evidence:
  - url: https://www.harness.co/openapi.json
    status: 404
  - url: https://www.harness.co/llms.txt
    status: 404
  - url: https://www.harness.co/.well-known/agent-card.json
    status: 404
  - url: https://app.harness.co/openapi.json
    status: 200
  - url: https://app.harness.co/.well-known/agent-card.json
    status: 404
  - url: https://harnesswealth.com/
    status: 200
  checked: '2026-08-22'

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