OneTick (OneMarketData)
OneTick, from OneMarketData, is an enterprise tick database and analytics platform for capital markets, capturing, storing, and analyzing trade, quote, and order-book time series at scale for quant research, transaction cost analysis, and trade surveillance. OneTick Cloud sells historical and reference market data covering 200+ global equities, options, and futures venues (history back to 1993, corporate actions, symbol cross-reference) delivered on demand through an OAuth2-secured REST WebAPI, a pandas-like Python API (onetick-py), a directed-graph Python API, SQL querying, and file delivery, with a self-serve trial registration. The detailed REST endpoint reference sits behind the cloud dashboard login. OneMarketData merged with KX in September 2025 under TA Associates ownership.
Limited machine-readable signal and partial portal coverage — documentation a human can read, but little a machine or agent can consume without scraping.
API Evangelist profiles OneTick (OneMarketData) the way a machine reads it — 8 machine-readable artifacts across 5 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 — OneTick (OneMarketData) scores 39.0/100 (thin), with a separate agent-readiness read of 14/100 (human only). 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 2026-07-27 · rubric v0.5
How we profile OneTick (OneMarketData)
Each block below is one kind of artifact we hold for OneTick (OneMarketData). 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 5
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.
OneTick Cloud REST API (WebAPI)
HTTPS REST access to OneTick Cloud market data and analytics queries, authenticated with an OAuth2 client-credentials Bearer token issued by the OneTick Keycloak realm (https://...
OneTick Python API - onetick-py (pandas-style)
A pandas-like Python API for querying tick-by-tick market data in OneTick, published on PyPI as onetick-py with openly browsable documentation. Against OneTick Cloud it executes...
OneTick Python API - Directed Graph
The lower-level directed-graph-style Python query API for OneTick, composing event-processor graphs against tick series, with openly browsable documentation and worked examples ...
OneTick SQL API
SQL querying over OneTick tick and reference data, documented openly and runnable against OneTick Cloud (including via otp.SqlQuery in onetick-py over the WebAPI transport).
OneTick Point-in-Time TCA API
Cloud API for extracting adjusted and unadjusted point-in-time quotes and trades at nanosecond precision across 200+ venues for transaction cost analysis, packaged for Python in...
Security Posture 2
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 OneTick (OneMarketData) — 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 2
Reference material describing how the API behaves
Agent Surfaces 2
MCP servers, agent skills, and machine-readable catalogs
Design & Contract 2
Pagination, idempotency, versioning, errors, and events
Build 3
SDKs, sample code, and the tooling you integrate with
Access & Security 3
Authentication, authorization, and security posture
Operate 3
Status, limits, changes, and where to get help
Commercial 2
Pricing, plans, and the legal terms of use
Company 3
The organization behind the API
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