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Human Interest website screenshot

Human Interest

Human Interest is a fintech company providing affordable, full-service 401(k), 403(b), and IRA retirement plans built for small and medium-sized businesses. Founded to close the retirement savings gap, it combines automated plan administration, 600+ payroll integrations, and low-cost index-fund investing. For platforms and partners it publishes a GraphQL API (https://api.humaninterest.com/v1/graphql) that lets them onboard retirement plans end to end, integrate OpenID Connect single sign-on, and subscribe to webhook events, all documented at docs.humaninterest.com. Human Interest maintains a SafeBase trust center with SOC 1, SOC 2 Type 1 & 2, GLBA, and CCPA attestations plus a responsible-disclosure program.

agent aware

Limited machine-readable signal and partial portal coverage — documentation a human can read, but little a machine or agent can consume without scraping.

Kin Score

API Evangelist profiles Human Interest the way a machine reads it — 6 machine-readable artifacts across 1 API, pulled from the provider's own public surface and indexed so a developer, an analyst, or an AI agent can evaluate it against every other provider on the network.

Every provider in the network is reduced to the same set of machine-readable artifacts — OpenAPI contracts, event specifications, GraphQL schemas, runnable collections, pricing and rate-limit signals, security posture, OAuth scopes, and the agent surfaces (MCP servers and skills) that let software drive the API on its own. We profile them because the interface is the part of a company you can actually inspect: it is a truer signal of what a provider does than any marketing page. From those artifacts we compute the Kin Score — Human Interest scores 36.4/100 (thin), with a separate agent-readiness read of 15/100 (agent aware). The full breakdown is below, followed by every artifact we hold — each card links through to its machine-readable definition on apis.io.

Kin Score

This is the API Evangelist rating — a single, repeatable read computed from the artifacts on this page. Green fill is points earned; the red track is points possible, so every bar shows earned-versus-possible at a glance.

Kin Score Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5
Composite quality — 36.4/100 · thin
Contract Quality 5.7 / 25
Developer Ergonomics 7.0 / 20
Commercial Clarity 12.1 / 20
Operational Transparency 2.4 / 13
Governance 0.0 / 12
Discoverability 9.3 / 10
Agent readiness — 15/100 · agent aware
Machine-Readable Contract 0 / 18
Agentic Access Contract 0 / 15
MCP Server 0 / 12
Machine-Readable Auth 10 / 10
Idempotency 0 / 9
Stable Error Semantics 0 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 0 / 7
Typed Event Surface 6 / 6
Agent Skills 0 / 5
Well-Known Catalog 0 / 4
Consent & Bot Identity 0 / 3

How we profile Human Interest

Each block below is one kind of artifact we hold for Human Interest. For each we say what it is and why it earns a place in the profile, then list every one we've indexed — capped at two rows, scroll within the panel for the rest.

APIs 1

Each API is captured as its own OpenAPI definition — every operation, parameter, and response. This is the single most useful machine-readable description of what an API does, and it's what lets us score, lint, mock, and generate against it without asking the provider for anything.

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

Human Interest GraphQL API

Partner GraphQL API for onboarding 401(k)/403(b) retirement plans, OpenID Connect single sign-on, and webhook event subscriptions.

Event Specifications 1

Not every API is request/response. AsyncAPI describes the event-driven and streaming side — the webhooks and channels — so the asynchronous half of the interface is documented the same way the synchronous half is.

AsyncAPI definitions for this provider's event-driven and streaming APIs.

Security Posture 4

Authentication, domain security, vulnerability disclosure, and trust-center signals — the evidence that a provider takes security seriously enough to document it. We profile it because you can't govern what you can't see.

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

Human Interest Authentication

oauth2/openIdConnect · 2 schemes

SECURITY

Human Interest Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Human Interest Vulnerability Disclosure

Hackerone · contact published

SECURITY

Human Interest Trust Center

SOC 1, SOC 2 Type 1, SOC 2 Type 2

SECURITY

Resources

Every other property we hold for Human Interest — documentation, portals, status pages, policies, and corporate surface — grouped by the job it does, following the integrator's arc from getting started to running in production.

Get Started 3

Portal, sign-up, and the first successful call

Documentation 1

Reference material describing how the API behaves

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

Design & Contract 4

Pagination, idempotency, versioning, errors, and events

Operate 1

Status, limits, changes, and where to get help

Commercial 3

Pricing, plans, and the legal terms of use

Company 2

The organization behind the API

← All providers · Data indexed from github.com/api-evangelist/human-interest · machine-readable index on apis.io