Splitwise
Splitwise is an expense-sharing and bill-splitting service that helps roommates, travel groups, couples, and friends track shared costs and settle up fairly. Its public Self-Serve REST API (v3.0) lets third-party applications read and manage a user's groups, friends, expenses, comments, and notifications on that user's behalf, authenticating with OAuth 2.0 or a personal API key. Splitwise was added to the API Evangelist network from a venture-capital portfolio lead and has been enriched from its public developer documentation and OpenAPI specification.
Real signal across most facets with visible, nameable gaps — the contract exists but is thin, or the portal is good while governance and commercial terms are absent.
API Evangelist profiles Splitwise the way a machine reads it — 20 machine-readable artifacts across 7 APIs, 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 — Splitwise scores 45.2/100 (developing), with a separate agent-readiness read of 39/100 (agent ready). 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
How this is scored →scored 2026-08-17 · rubric v0.11.0
Put this on your own site. The badge is drawn live from Splitwise's current Kin Score — paste it once and it updates itself every time the score is recomputed. It follows your visitor's light or dark setting, and it links back here so anyone who sees it can read the full breakdown.
<!-- Kin Score · API Evangelist -->
<a href="https://providers.apievangelist.com/providers/splitwise/"
title="Splitwise on API Evangelist — API profile and Kin Score">
<img src="https://apis.io/badge/splitwise.svg"
alt="Splitwise Kin Score — API readiness rating by API Evangelist" width="150" height="150" loading="lazy">
</a>[](https://providers.apievangelist.com/providers/splitwise/)<!-- Kin Score · API Evangelist -->
<a href="https://providers.apievangelist.com/providers/splitwise/"
title="Splitwise on API Evangelist — API profile and Kin Score">
<img src="https://apis.io/badge/splitwise/card.svg"
alt="Splitwise Kin Score — API readiness rating by API Evangelist" width="340" height="120" loading="lazy">
</a>More shapes, themes and sizes → · Score as JSON · How badges work
How we profile Splitwise
Each block below is one kind of artifact we hold for Splitwise. 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 7
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.
Splitwise comments API
The comments API from Splitwise — 3 operation(s) for comments.
Splitwise expenses API
The expenses API from Splitwise — 6 operation(s) for expenses.
Splitwise friends API
The friends API from Splitwise — 5 operation(s) for friends.
Splitwise groups API
A Group represents a collection of users who share expenses together. For example, some users use a Group to aggregate expenses related to a home. Others use it to represent a t...
Splitwise notifications API
The notifications API from Splitwise — 1 operation(s) for notifications.
Splitwise other API
The other API from Splitwise — 2 operation(s) for other.
Splitwise users API
Resources to access and modify user information.
Scroll within the panel for all 7 ·
Open Collections 8
Open, tool-agnostic collections carry the same runnable value as Postman without locking you to one client — the portable, forkable form of the same exercise.
Open, tool-agnostic API collections (OpenAPI-derived and Bruno).
API Collection
OPEN COLLECTIONSplitwise comments API
OPEN COLLECTIONSplitwise comments expenses API
OPEN COLLECTIONSplitwise comments friends API
OPEN COLLECTIONSplitwise comments groups API
OPEN COLLECTIONSplitwise comments notifications API
OPEN COLLECTIONSplitwise comments other API
OPEN COLLECTIONSplitwise comments users API
OPEN COLLECTIONScroll within the panel for all 8 ·
MCP Servers 1
Model Context Protocol servers expose these APIs directly to AI agents. We profile them because agent-native access is the fastest-growing way this provider's capabilities actually get used.
Model Context Protocol servers that expose these APIs to AI agents.
splitwise-mcp.yml
MCP SERVERSecurity Posture 3
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.
Scopes 1
OAuth scopes are the vocabulary of least-privilege access. Profiling them shows exactly what an integration — or an agent acting on a user's behalf — is allowed to do.
OAuth scopes governing access to this provider's APIs.
Resources
Every other property we hold for Splitwise — 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 2
Portal, sign-up, and the first successful call
Documentation 2
Reference material describing how the API behaves
Agent Surfaces 4
MCP servers, agent skills, and machine-readable catalogs
Design & Contract 5
Pagination, idempotency, versioning, errors, and events
Build 1
SDKs, sample code, and the tooling you integrate with
Access & Security 6
Authentication, authorization, and security posture
Operate 1
Status, limits, changes, and where to get help
Commercial 2
Pricing, plans, and the legal terms of use
Company 2
The organization behind the API
Other 1
Properties that don't map to a standard resource type
← All providers · Data indexed from github.com/api-evangelist/splitwise · machine-readable index on apis.io
This is an independent, third-party profile of Splitwise, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.
The Kin Score and Agent Readiness rating are independently calculated assessments of a company's public API artifacts, scored against a published rubric. They are not certifications, endorsements, security assessments, or audits.
Corrections, re-scores, and removal are free — no partnership or purchase required, and you do not need to justify the request. A removed company is recorded as unrated, never scored zero for having asked. Acknowledgement within one business day; removal within two.
info@apievangelist.com
·
Read the full data-sourcing policy →
On a security or compliance team? Put security in the subject line and
you will get a person, not a form — we will tell you exactly which public URLs this profile was built from.