Quadratic website screenshot

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 APIs on the APIs.io network, including Agent Connections API, Auth API, Cells API, and 11 more. Tagged areas include Company, Artificial Intelligence, Spreadsheet, Analytics, and Data.

Quadratic’s developer surface includes documentation, API reference, getting-started guide, engineering blog, pricing, signup flow, authentication, and 20 more developer resources.

🌐 Visit website 📡 Source on GitHub
49.0/100 developing ▬ flat Agent 30/100 agent ready saas Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0
1 APIs 1 MCP Servers
CompanyArtificial IntelligenceSpreadsheetAnalyticsDataDeveloper ToolsMCPProductivity

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0
Composite quality — 49.0/100 · developing
Contract Quality 12.1 / 23
Developer Ergonomics 12.3 / 18
Access Clarity 10.9 / 18
Operational Transparency 2.2 / 12
Contract Governance 0.5 / 11
Discoverability 6.8 / 9
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
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.
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 github.com/api-evangelist/quadratic: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

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 15

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

API Collection

OPEN COLLECTION

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 15

MCP Servers 1

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

Quadratic MCP Server

MCP SERVER

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
MCPServer
 LLMsTxt
LLMsTxt
 WellKnown
WellKnown
 AgentSkill
AgentSkill

Design & Contract 4

Pagination, idempotency, versioning, errors, and events

Lifecycle
Lifecycle
 Conventions
Conventions
 DataModel
DataModel
 Conformance
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
Authentication
 DomainSecurity
DomainSecurity
 TrustCenter
TrustCenter
 Compliance
Compliance

Operate 1

Status, limits, changes, and where to get help

StatusPage
StatusPage

Commercial 3

Pricing, plans, and the legal terms of use

Pricing
Pricing
 TermsOfService
TermsOfService
 PrivacyPolicy
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)

apis.yml Raw ↑ 
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: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source:
  - authentication
  - security
  - sandbox
  generated: '2026-09-03'
  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'
tags:
- Company
- Artificial Intelligence
- Spreadsheet
- 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: 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

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