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.

Quadratic publishes 14 API contracts indexed on the APIs.io network, including Agent Connections API, Auth API, Cells API, and 11 more. Tagged areas include Company, Artificial Intelligence, Spreadsheets, Analytics, and Data.

The Quadratic catalog on APIs.io includes 1 Spectral governance ruleset.

Quadratic’s developer surface includes documentation, API reference, getting-started guide, engineering blog, pricing, signup flow, authentication, and 21 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

58.7/100 strong ▬ flat Agent 30/100 agent ready Front door AI 6/6 dominant Heartbeat 58/100 alive saas Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessPaid

1 published contract 1 MCP Servers 2 Agent Skills

Company Artificial Intelligence Spreadsheets Analytics Data Developer Tools MCP Productivity

Kin Score

Kin Score How this is scored →
scored 2026-11-06 · rubric v0.27.0

Composite quality — 58.7/100 · strong

Contract Quality 9.1 / 19

Developer Ergonomics 10.3 / 15

Access Clarity 15.0 / 15

Operational Transparency 1.8 / 10

Contract Governance 1.6 / 9

Discoverability 5.4 / 8

Regulatory Posture 4.1 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 30/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 6 / 6

MCP Server 12 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 5 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 0 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

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 applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

The six quality facets above are damped to 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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Agent readiness — checks not met, largest first (exact, from this profile):

Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author
Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented)
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented)
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document
Delegated User Identity +6 pts — a served discovery document listing authorization_code in grant_types_supported (served), else an oauth2 authorizationCode flow or openIdConnect declared in an OpenAPI (documented)

7 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Contract Quality scores 48.5 — up to +12.9 composite points
Operational Transparency scores 18.4 — up to +10.6 composite points
Contract Governance scores 18.2 — up to +9.8 composite points

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

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 the provider profile at artifacts.apis.io/quadratic/apis.yml: open an issue on github.com/api-evangelist/quadratic to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Standards implemented 2

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

Model Context Protocol (MCP)

measured — observed by APIs.io (documented)

OpenAPI

measured — observed by APIs.io (published)

APIs 14

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 for all 14

Open Collections 14

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

Quadratic Developer Agent Connections API

OPEN COLLECTION

Quadratic Developer Agent Connections Auth API

OPEN COLLECTION

Quadratic Developer Agent Connections Cells API

OPEN COLLECTION

Quadratic Developer Agent Connections Columns and rows API

OPEN COLLECTION

Quadratic Developer Agent Connections Conditional formats API

OPEN COLLECTION

Quadratic Developer Agent Connections API

OPEN COLLECTION

Quadratic Developer Agent Connections Context, outline, search API

OPEN COLLECTION

Quadratic Developer Agent Connections Documentation API

OPEN COLLECTION

Quadratic Developer Agent Connections Files API

OPEN COLLECTION

Quadratic Developer Agent Connections Health API

OPEN COLLECTION

Quadratic Developer Agent Connections History API

OPEN COLLECTION

Quadratic Developer Agent Connections Sheets API

OPEN COLLECTION

Quadratic Developer Agent Connections Tables API

OPEN COLLECTION

Quadratic Developer Agent Connections Validations API

OPEN COLLECTION

Scroll for all 14

MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

Quadratic MCP Server

Remote MCP server over streamable HTTP.

MCP SERVER

Agent Skills 2

Packaged agent skills for driving this provider's APIs from an AI assistant.

read-quadratic-spreadsheet

AGENT SKILL

write-quadratic-cells-and-code

AGENT SKILL

Quadratic API pricing

Prices published by Quadratic, read 2026-10-07 from www.quadratichq.com/pricing. A free plan or tier is listed.

Plan	Price
Personal	Free Includes: Limited AI usage; Limited sharing, files, and connections; Limited support
Pro	$18 Includes: $20 in AI credits / month; access to additional models; unlimited sharing, files, and connections
Business	$36 Includes: $40 in AI credits / month; everything in Pro
Enterprise	Custom Includes: Custom AI usage, SSO, Self-hosting option, Dedicated support

Plan details, limits and sources →

Billed by: user/month, billed annually · FinOps profile →

Pricing Plans 2

Published pricing tiers and plan structures.

Quadratic Plans Pricing

4 plans

PLANS

Quadratic Price Estimates

0 plans

PLANS

Service Levels 1

Uptime the provider promises or reports, as SLA4OAI. Read from its own pages; APIs.io runs no monitors.

Quadratic

SLA

FinOps 1

Cost, billing, and metering signals for API financial operations.

Quadratic Finops

FINOPS

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Quadratic API Rules

63 rules · 52 errors 9 warnings 2 info

SPECTRAL

OpenAPI Overlays 1

Overlays applied on top of this provider's contracts. Each card says who wrote it: a document the provider publishes, or one API Evangelist derived or generated.

Quadratic Openapi Overlay

2 actions · servers

DERIVED

Security Posture 3

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

Quadratic Authentication

http · 1 scheme

SECURITY

Quadratic Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Quadratic Trust Center

SOC 2, HIPAA

SECURITY

Resources

Get Started 3

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

SignUp

SignUp

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

MCPServer

LLMsTxt

WellKnown

AgentSkill

Design & Contract 4

Pagination, idempotency, versioning, errors, and events

Lifecycle

Conventions

DataModel

Conformance

Build 3

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Packages

Packages

SDKs

SDKs

Access & Security 4

Authentication, authorization, and security posture

Authentication

DomainSecurity

TrustCenter

Compliance

Operate 1

Status, limits, changes, and where to get help

StatusPage

StatusPage

Commercial 4

Pricing, plans, and the legal terms of use

Plans

Pricing

TermsOfService

PrivacyPolicy

Company 2

The organization behind the API

Website

Website

Blog

Blog

Other 1

Properties that don't map to a standard resource type

Overlay

Overlay

Source (apis.yml)

aid: quadratic
name: Quadratic
description: 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.
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: high
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: paid
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Paid
  confidence: high
  source:
  - plans
  - authentication
  - security
  - sandbox
  generated: '2026-11-06'
  method: derived
image: https://www.quadratichq.com/images/og-image.png
url: https://raw.githubusercontent.com/api-evangelist/quadratic/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- gv
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-20'
x-docs-platform: gitbook
x-docs-platform-confidence: high
x-docs-platform-checked: 2026-10-04
tags:
- Company
- Artificial Intelligence
- Spreadsheets
- Analytics
- Data
- Developer Tools
- MCP
- Productivity
tags_raw:
- Company
- AI
- Spreadsheet
- Analytics
- Data
- Developer Tools
- MCP
- Productivity
apis:
- aid: quadratic:quadratic-agent-connections-api
  name: Quadratic Agent Connections API
  description: List and inspect team agent connections (third-party REST API bindings).
  humanURL: https://www.quadratichq.com/spreadsheet-api
  baseURL: https://developer-api.quadratichq.com
  tags:
  - Agent Connections
  properties:
  - type: OpenAPI
    url: openapi/quadratic-agent-connections-api-openapi.yml
  - type: Authentication
    url: authentication/quadratic-authentication.yml
  - type: Conventions
    url: conventions/quadratic-conventions.yml
  - type: ErrorCatalog
    url: errors/quadratic-problem-types.yml
  - type: Sandbox
    url: sandbox/quadratic-sandbox.yml
  - type: DataModel
    url: data-model/quadratic-data-model.yml
  - type: Conformance
    url: conformance/quadratic-conformance.yml
  - type: Lifecycle
    url: lifecycle/quadratic-lifecycle.yml
- aid: quadratic:quadratic-auth-api
  name: Quadratic Auth API
  description: Identity for the calling token.
  humanURL: https://www.quadratichq.com/spreadsheet-api
  baseURL: https://developer-api.quadratichq.com
  tags:
  - Authentication
  tags_raw:
  - Auth
  properties:
  - type: OpenAPI
    url: openapi/quadratic-auth-api-openapi.yml
  - type: Authentication
    url: authentication/quadratic-authentication.yml
  - type: Conventions
    url: conventions/quadratic-conventions.yml
  - type: ErrorCatalog
    url: errors/quadratic-problem-types.yml
  - type: Sandbox
    url: sandbox/quadratic-sandbox.yml
  - type: DataModel
    url: data-model/quadratic-data-model.yml
  - type: Conformance
    url: conformance/quadratic-conformance.yml
  - type: Lifecycle
    url: lifecycle/quadratic-lifecycle.yml
- aid: quadratic:quadratic-cells-api
  name: Quadratic Cells API
  description: Read and write cell values, code, formulas, formats, borders, and merges.
  humanURL: https://www.quadratichq.com/spreadsheet-api
  baseURL: https://developer-api.quadratichq.com
  tags:
  - Cells
  properties:
  - type: OpenAPI
    url: openapi/quadratic-cells-api-openapi.yml
  - type: Authentication
    url: authentication/quadratic-authentication.yml
  - type: Conventions
    url: conventions/quadratic-conventions.yml
  - type: ErrorCatalog
    url: errors/quadratic-problem-types.yml
  - type: Sandbox
    url: sandbox/quadratic-sandbox.yml
  - type: DataModel
    url: data-model/quadratic-data-model.yml
  - type: Conformance
    url: conformance/quadratic-conformance.yml
  - type: Lifecycle
    url: lifecycle/quadratic-lifecycle.yml
- aid: quadratic:quadratic-columns-and-rows-api
  name: Quadratic Columns and rows API
  description: Insert, delete, and resize columns and rows.
  humanURL: https://www.quadratichq.com/spreadsheet-api
  baseURL: https://developer-api.quadratichq.com
  tags:
  - Columns and rows
  properties:
  - type: OpenAPI
    url: openapi/quadratic-columns-and-rows-api-openapi.yml
  - type: Authentication
    url: authentication/quadratic-authentication.yml
  - type: Conventions
    url: conventions/quadratic-conventions.yml
  - type: ErrorCatalog
    url: errors/quadratic-problem-types.yml
  - type: Sandbox
    url: sandbox/quadratic-sandbox.yml
  - type: DataModel
    url: data-model/quadratic-data-model.yml
  - type: Conformance
    url: conformance/quadratic-conformance.yml
  - type: Lifecycle
    url: lifecycle/quadratic-lifecycle.yml
- aid: quadratic:quadratic-conditional-formats-api
  name: Quadratic Conditional formats API
  description: Manage conditional-format rules.
  humanURL: https://www.quadratichq.com/spreadsheet-api
  baseURL: https://developer-api.quadratichq.com
  tags:
  - Conditional formats
  properties:
  - type: OpenAPI
    url: openapi/quadratic-conditional-formats-api-openapi.yml
  - type: Authentication
    url: authentication/quadratic-authentication.yml
  - type: Conventions
    url: conventions/quadratic-conventions.yml
  - type: ErrorCatalog
    url: errors/quadratic-problem-types.yml
  - type: Sandbox
    url: sandbox/quadratic-sandbox.yml
  - type: DataModel
    url: data-model/quadratic-data-model.yml
  - type: Conformance
    url: conformance/quadratic-conformance.yml
  - type: Lifecycle
    url: lifecycle/quadratic-lifecycle.yml
- aid: quadratic:quadratic-connections-api
  name: Quadratic Connections API
  description: Fetch schemas from registered DB connections.
  humanURL: https://www.quadratichq.com/spreadsheet-api
  baseURL: https://developer-api.quadratichq.com
  tags:
  - Connections
  properties:
  - type: OpenAPI
    url: openapi/quadratic-connections-api-openapi.yml
  - type: Authentication
    url: authentication/quadratic-authentication.yml
  - type: Conventions
    url: conventions/quadratic-conventions.yml
  - type: ErrorCatalog
    url: errors/quadratic-problem-types.yml
  - type: Sandbox
    url: sandbox/quadratic-sandbox.yml
  - type: DataModel
    url: data-model/quadratic-data-model.yml
  - type: Conformance
    url: conformance/quadratic-conformance.yml
  - type: Lifecycle
    url: lifecycle/quadratic-lifecycle.yml
- aid: quadratic:quadratic-context-outline-search-api
  name: Quadratic Context, outline, search API
  description: Read-only exploration of file structure and contents.
  humanURL: https://www.quadratichq.com/spreadsheet-api
  baseURL: https://developer-api.quadratichq.com
  tags:
  - Context, outline, search
  properties:
  - type: OpenAPI
    url: openapi/quadratic-context-outline-search-api-openapi.yml
  - type: Authentication
    url: authentication/quadratic-authentication.yml
  - type: Conventions
    url: conventions/quadratic-conventions.yml
  - type: ErrorCatalog
    url: errors/quadratic-problem-types.yml
  - type: Sandbox
    url: sandbox/quadratic-sandbox.yml
  - type: DataModel
    url: data-model/quadratic-data-model.yml
  - type: Conformance
    url: conformance/quadratic-conformance.yml
  - type: Lifecycle
    url: lifecycle/quadratic-lifecycle.yml
- aid: quadratic:quadratic-documentation-api
  name: Quadratic Documentation API
  description: OpenAPI spec and Scalar viewer.
  humanURL: https://www.quadratichq.com/spreadsheet-api
  baseURL: https://developer-api.quadratichq.com
  tags:
  - Documentation
  properties:
  - type: OpenAPI
    url: openapi/quadratic-documentation-api-openapi.yml
  - type: Authentication
    url: authentication/quadratic-authentication.yml
  - type: Conventions
    url: conventions/quadratic-conventions.yml
  - type: ErrorCatalog
    url: errors/quadratic-problem-types.yml
  - type: Sandbox
    url: sandbox/quadratic-sandbox.yml
  - type: DataModel
    url: data-model/quadratic-data-model.yml
  - type: Conformance
    url: conformance/quadratic-conformance.yml
  - type: Lifecycle
    url: lifecycle/quadratic-lifecycle.yml
- aid: quadratic:quadratic-files-api
  name: Quadratic Files API
  description: Create, list, fetch, and import files.
  humanURL: https://www.quadratichq.com/spreadsheet-api
  baseURL: https://developer-api.quadratichq.com
  tags:
  - File
  tags_raw:
  - Files
  properties:
  - type: OpenAPI
    url: openapi/quadratic-files-api-openapi.yml
  - type: Authentication
    url: authentication/quadratic-authentication.yml
  - type: Conventions
    url: conventions/quadratic-conventions.yml
  - type: ErrorCatalog
    url: errors/quadratic-problem-types.yml
  - type: Sandbox
    url: sandbox/quadratic-sandbox.yml
  - type: DataModel
    url: data-model/quadratic-data-model.yml
  - type: Conformance
    url: conformance/quadratic-conformance.yml
  - type: Lifecycle
    url: lifecycle/quadratic-lifecycle.yml
- aid: quadratic:quadratic-health-api
  name: Quadratic Health API
  description: Liveness probes.
  humanURL: https://www.quadratichq.com/spreadsheet-api
  baseURL: https://developer-api.quadratichq.com
  tags:
  - Health
  properties:
  - type: OpenAPI
    url: openapi/quadratic-health-api-openapi.yml
  - type: Authentication
    url: authentication/quadratic-authentication.yml
  - type: Conventions
    url: conventions/quadratic-conventions.yml
  - type: ErrorCatalog
    url: errors/quadratic-problem-types.yml
  - type: Sandbox
    url: sandbox/quadratic-sandbox.yml
  - type: DataModel
    url: data-model/quadratic-data-model.yml
  - type: Conformance
    url: conformance/quadratic-conformance.yml
  - type: Lifecycle
    url: lifecycle/quadratic-lifecycle.yml
- aid: quadratic:quadratic-history-api
  name: Quadratic History API
  description: Undo, redo, and atomic batches of actions.
  humanURL: https://www.quadratichq.com/spreadsheet-api
  baseURL: https://developer-api.quadratichq.com
  tags:
  - History
  properties:
  - type: OpenAPI
    url: openapi/quadratic-history-api-openapi.yml
  - type: Authentication
    url: authentication/quadratic-authentication.yml
  - type: Conventions
    url: conventions/quadratic-conventions.yml
  - type: ErrorCatalog
    url: errors/quadratic-problem-types.yml
  - type: Sandbox
    url: sandbox/quadratic-sandbox.yml
  - type: DataModel
    url: data-model/quadratic-data-model.yml
  - type: Conformance
    url: conformance/quadratic-conformance.yml
  - type: Lifecycle
    url: lifecycle/quadratic-lifecycle.yml
- aid: quadratic:quadratic-sheets-api
  name: Quadratic Sheets API
  description: Add, rename, delete, reorder, and recolor sheets.
  humanURL: https://www.quadratichq.com/spreadsheet-api
  baseURL: https://developer-api.quadratichq.com
  tags:
  - Sheets
  properties:
  - type: OpenAPI
    url: openapi/quadratic-sheets-api-openapi.yml
  - type: Authentication
    url: authentication/quadratic-authentication.yml
  - type: Conventions
    url: conventions/quadratic-conventions.yml
  - type: ErrorCatalog
    url: errors/quadratic-problem-types.yml
  - type: Sandbox
    url: sandbox/quadratic-sandbox.yml
  - type: DataModel
    url: data-model/quadratic-data-model.yml
  - type: Conformance
    url: conformance/quadratic-conformance.yml
  - type: Lifecycle
    url: lifecycle/quadratic-lifecycle.yml
- aid: quadratic:quadratic-tables-api
  name: Quadratic Tables API
  description: Create, configure, and manage data tables.
  humanURL: https://www.quadratichq.com/spreadsheet-api
  baseURL: https://developer-api.quadratichq.com
  tags:
  - Tables
  properties:
  - type: OpenAPI
    url: openapi/quadratic-tables-api-openapi.yml
  - type: Authentication
    url: authentication/quadratic-authentication.yml
  - type: Conventions
    url: conventions/quadratic-conventions.yml
  - type: ErrorCatalog
    url: errors/quadratic-problem-types.yml
  - type: Sandbox
    url: sandbox/quadratic-sandbox.yml
  - type: DataModel
    url: data-model/quadratic-data-model.yml
  - type: Conformance
    url: conformance/quadratic-conformance.yml
  - type: Lifecycle
    url: lifecycle/quadratic-lifecycle.yml
- aid: quadratic:quadratic-validations-api
  name: Quadratic Validations API
  description: Manage cell validation rules.
  humanURL: https://www.quadratichq.com/spreadsheet-api
  baseURL: https://developer-api.quadratichq.com
  tags:
  - Validations
  properties:
  - type: OpenAPI
    url: openapi/quadratic-validations-api-openapi.yml
  - type: Authentication
    url: authentication/quadratic-authentication.yml
  - type: Conventions
    url: conventions/quadratic-conventions.yml
  - type: ErrorCatalog
    url: errors/quadratic-problem-types.yml
  - type: Sandbox
    url: sandbox/quadratic-sandbox.yml
  - type: DataModel
    url: data-model/quadratic-data-model.yml
  - type: Conformance
    url: conformance/quadratic-conformance.yml
  - type: Lifecycle
    url: lifecycle/quadratic-lifecycle.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Plans
  url: plans/quadratic-plans-pricing.yml
- type: Overlay
  url: overlays/quadratic-openapi-overlay.yaml
- type: Website
  url: https://www.quadratichq.com
- type: DeveloperPortal
  url: https://docs.quadratichq.com
- type: Documentation
  url: https://docs.quadratichq.com
- type: APIReference
  url: https://www.quadratichq.com/spreadsheet-api
- type: GettingStarted
  url: https://docs.quadratichq.com/getting-started
- type: Blog
  url: https://www.quadratichq.com/blog
- type: GitHubOrganization
  url: https://github.com/quadratichq
- type: Pricing
  url: https://www.quadratichq.com/pricing
- type: SignUp
  url: https://app.quadratichq.com
- type: TermsOfService
  url: https://www.quadratichq.com/terms
- type: PrivacyPolicy
  url: https://www.quadratichq.com/privacy
- type: StatusPage
  url: https://status.quadratichq.com
- type: Lifecycle
  url: lifecycle/quadratic-lifecycle.yml
- type: MCPServer
  url: mcp/quadratic-mcp.yml
- type: LLMsTxt
  url: llms/quadratic-llms.txt
- type: Packages
  url: packages/quadratic-packages.yml
- type: SDKs
  url: packages/quadratic-packages.yml
- type: Conventions
  url: conventions/quadratic-conventions.yml
- type: DataModel
  url: data-model/quadratic-data-model.yml
- type: Conformance
  url: conformance/quadratic-conformance.yml
- type: Authentication
  url: authentication/quadratic-authentication.yml
- type: DomainSecurity
  url: security/quadratic-domain-security.yml
- type: TrustCenter
  url: security/quadratic-trust-center.yml
- type: Compliance
  url: security/quadratic-trust-center.yml
- type: WellKnown
  url: well-known/quadratic-well-known.yml
- type: AgentSkill
  url: skills/_index.yml
x-enrichment:
  date: '2026-07-20'
  status: enriched
  artifacts_added: 15
  pass: local-v1

Quadratic API — frequently asked questions

Does Quadratic have an API?

Yes. APIs.io lists 14 APIs from Quadratic, including Quadratic Agent Connections API, Quadratic Auth API and Quadratic Cells API, and 11 more.

Is there an OpenAPI specification for the Quadratic API?

Yes. APIs.io indexes 14 OpenAPI specifications for Quadratic, each linked for download from this page.

How do I authenticate with the Quadratic API?

Quadratic uses bearer-token authentication (http · 1 scheme). The details are profiled on APIs.io as Quadratic Authentication.

How much does the Quadratic API cost?

Quadratic publishes its prices; its Pro plan is $18 as of 2026-10-07. APIs.io lists 4 pricing plans for Quadratic, with each plan's price, limits and inclusions under Pricing on this page.

Does Quadratic have an MCP server?

Yes. APIs.io lists 1 MCP server for Quadratic: Remote MCP server over streamable HTTP.

Is the Quadratic API ready for AI agents?

Quadratic has a Kin Score of 58.7 out of 100 (strong) and an Agent Readiness score of 30.2 (agent-ready), scored by API Evangelist on 2026-11-06.

Work with this as data

Every provider here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for providers

9 MCP tools reach this

find_providersBrowse and filter every provider in the catalog.
get_provider_artifactsEvery artifact this provider publishes, grouped by type.
get_provider_operationsEvery operation across all of their OpenAPIs — one call instead of parsing every spec.
get_provider_toolsEvery MCP tool they ship, with the operation each wraps.
get_provider_evidenceHow each part of their score was established. Free — the basis for a claim should not sit behind it.
get_provider_ratingPRO — composite, band, trend and facet scores.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

All 92 tools →

Call it yourself

curl for this page

This provider

curl "https://apis.io/api/v1/providers/quadratic"

All providers

curl "https://apis.io/api/v1/providers?limit=25"

Every operation they expose

curl "https://apis.io/api/v1/providers/quadratic/operations?limit=25"

How their score was established

curl "https://apis.io/api/v1/providers/quadratic/evidence"

Calls without X-API-Key need no key. Calls with it need a paid plan — get a key.

Get an API key

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