Quadratic
Quadratic is an AI-native infinite spreadsheet that combines Python, SQL, JavaScript, formulas, and AI agents on a single canvas, with live connections to databases like PostgreSQL, MySQL, BigQuery, and Snowflake. Its token-authenticated Developer (Spreadsheet) API and remote MCP server let agents and applications programmatically read and write cells, run code and SQL, build tables, and orchestrate spreadsheets.
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 Quadratic the way a machine reads it — 18 machine-readable artifacts across 14 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 — Quadratic scores 52.4/100 (developing), with a separate agent-readiness read of 47/100 (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 2026-07-27 · rubric v0.5
How we profile Quadratic
Each block below is one kind of artifact we hold for Quadratic. 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 14
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.
Quadratic Agent Connections API
List and inspect team agent connections (third-party REST API bindings).
Quadratic Auth API
Identity for the calling token.
Quadratic Cells API
Read and write cell values, code, formulas, formats, borders, and merges.
Quadratic Columns and rows API
Insert, delete, and resize columns and rows.
Quadratic Conditional formats API
Manage conditional-format rules.
Quadratic Connections API
Fetch schemas from registered DB connections.
Quadratic Context, outline, search API
Read-only exploration of file structure and contents.
Quadratic Documentation API
OpenAPI spec and Scalar viewer.
Quadratic Files API
Create, list, fetch, and import files.
Quadratic Health API
Liveness probes.
Quadratic History API
Undo, redo, and atomic batches of actions.
Quadratic Sheets API
Add, rename, delete, reorder, and recolor sheets.
Quadratic Tables API
Create, configure, and manage data tables.
Quadratic Validations API
Manage cell validation rules.
Scroll within the panel for all 14 ·
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.
quadratic-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.
Resources
Every other property we hold for Quadratic — 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 4
MCP servers, agent skills, and machine-readable catalogs
Design & Contract 4
Pagination, idempotency, versioning, errors, and events
Build 3
SDKs, sample code, and the tooling you integrate with
Access & Security 4
Authentication, authorization, and security posture
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/quadratic · machine-readable index on apis.io