Quadrata

Quadrata is a privacy-preserving on-chain identity network for Web3, issuing a non-transferable (soulbound) NFT "Passport" that binds verified identity, compliance and reputation attributes to a user wallet without storing personal data on-chain. Integrators use the Quadrata SDK and REST API to onboard users (KYC), businesses (KYB), and accredited/sophisticated investors, run AML risk and on-chain wallet screening, request consented privacy (PII) data, and query passport attributes on-chain via smart contracts or off-chain via API. Passport attributes include DID (sybil resistance), AML score, COUNTRY, IS_BUSINESS, INVESTOR_STATUS, and Cred Protocol credit score. Supported networks include Ethereum, Polygon, Arbitrum, Optimism, Avalanche, Evmos, and KAVA.

Quadrata publishes 1 API on the APIs.io network. Tagged areas include Company, Crypto Web3, Identity, Digital Identity, and KYC.

The Quadrata catalog on APIs.io includes 1 event-driven AsyncAPI specification.

Quadrata’s developer surface includes documentation, getting-started guide, API reference, signup flow, engineering blog, support, sandbox, and 19 more developer resources.

🌐 Visit website 📡 Source on GitHub
37.5/100 thin ▬ flat Agent 35/100 agent aware Full breakdown ↓
scored 2026-07-27 · rubric v0.5
AccessSelf serve
1 APIs 1 MCP Servers
CompanyCrypto Web3IdentityDigital IdentityKYCKYBAMLComplianceWallet ScreeningBlockchainWeb3Decentralized Identity

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5
Composite quality — 37.5/100 · thin
Contract Quality 5.7 / 25
Developer Ergonomics 14.8 / 20
Commercial Clarity 6.8 / 20
Operational Transparency 1.0 / 13
Governance 0.0 / 12
Discoverability 9.3 / 10
Agent readiness — 35/100 · agent aware
Machine-Readable Contract 0 / 18
Agentic Access Contract 0 / 15
MCP Server 12 / 12
Machine-Readable Auth 10 / 10
Idempotency 0 / 9
Stable Error Semantics 8 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 0 / 7
Typed Event Surface 6 / 6
Agent Skills 0 / 5
Well-Known Catalog 0 / 4
Consent & Bot Identity 0 / 3
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/quadrata: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 1

Individual APIs this provider publishes, each with its own machine-readable definition.

Quadrata Passport API

Server-side REST API for Quadrata Passport: login/access-token authentication, ECDSA-signed privacy data requests, on-chain AML wallet screening, and passport attribute queries....

MCP Servers 1

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

quadrata-mcp.yml

MCP SERVER

Event Specifications 1

AsyncAPI definitions for this provider's event-driven and streaming APIs.

Quadrata Webhooks

ASYNCAPI

Security Posture 2

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

Quadrata Authentication

apiKey/http-basic/ecdsa-request-signature/jwt-access-token · 4 schemes

SECURITY

Quadrata Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Get Started 5

Portal, sign-up, and the first successful call

DeveloperPortal
DeveloperPortal
 GettingStarted
GettingStarted
 SignUp
SignUp
 Sandbox
Sandbox
 Sandbox
Sandbox

Documentation 2

Reference material describing how the API behaves

Documentation
Documentation
 APIReference
APIReference

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

MCPServer
MCPServer
 LLMsTxt
LLMsTxt

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

Conventions
Conventions
 ErrorCatalog
ErrorCatalog
 Webhooks
Webhooks
 DataModel
DataModel
 Components
Components
 Lifecycle
Lifecycle

Build 2

SDKs, sample code, and the tooling you integrate with

Packages
Packages
 SDKs
SDKs

Access & Security 2

Authentication, authorization, and security posture

Authentication
Authentication
 DomainSecurity
DomainSecurity

Operate 1

Status, limits, changes, and where to get help

Support
Support

Commercial 2

Pricing, plans, and the legal terms of use

TermsOfService
TermsOfService
 PrivacyPolicy
PrivacyPolicy

Company 4

The organization behind the API

Website
Website
 Blog
Blog
 Twitter
Twitter
 LinkedIn
LinkedIn

Source (apis.yml)

apis.yml Raw ↑ 
aid: quadrata
accessModel:
  pricing: unknown
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Self-serve signup
  confidence: medium
  source:
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/quadrata.png
name: Quadrata
description: Quadrata is a privacy-preserving on-chain identity network for Web3, issuing a non-transferable (soulbound) NFT
  "Passport" that binds verified identity, compliance and reputation attributes to a user wallet without storing personal
  data on-chain. Integrators use the Quadrata SDK and REST API to onboard users (KYC), businesses (KYB), and accredited/sophisticated
  investors, run AML risk and on-chain wallet screening, request consented privacy (PII) data, and query passport attributes
  on-chain via smart contracts or off-chain via API. Passport attributes include DID (sybil resistance), AML score, COUNTRY,
  IS_BUSINESS, INVESTOR_STATUS, and Cred Protocol credit score. Supported networks include Ethereum, Polygon, Arbitrum, Optimism,
  Avalanche, Evmos, and KAVA.
url: https://raw.githubusercontent.com/api-evangelist/quadrata/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- multicoin-capital
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.20'
x-enrichment:
  date: '2026-07-20'
  status: enriched
  artifacts_added: 12
  pass: local-v1
created: '2026-07-17'
modified: '2026-07-20'
tags:
- Company
- Crypto Web3
- Identity
- Digital Identity
- KYC
- KYB
- AML
- Compliance
- Wallet Screening
- Blockchain
- Web3
- Decentralized Identity
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
apis:
- name: Quadrata Passport API
  description: 'Server-side REST API for Quadrata Passport: login/access-token authentication, ECDSA-signed privacy data requests,
    on-chain AML wallet screening, and passport attribute queries. Distributed as the @quadrata/sdk JavaScript/TypeScript
    client alongside on-chain smart-contract reads.'
  humanURL: https://docs.quadrata.com/
  baseURL: https://prod.quadrata.com/api/v1
  tags:
  - Identity
  - KYC
  - AML
  - Web3
  properties:
  - type: Documentation
    url: https://docs.quadrata.com/
  - type: Authentication
    url: authentication/quadrata-authentication.yml
  - type: Conventions
    url: conventions/quadrata-conventions.yml
  - type: ErrorCatalog
    url: errors/quadrata-error-codes.yml
  - type: Webhooks
    url: asyncapi/quadrata-webhooks.yml
  - type: DataModel
    url: data-model/quadrata-data-model.yml
  - type: MCPServer
    url: mcp/quadrata-mcp.yml
common:
- type: Website
  url: https://quadrata.com
- type: DeveloperPortal
  url: https://docs.quadrata.com/
- type: Documentation
  url: https://docs.quadrata.com/integration/introduction/introduction-to-quadrata
- type: GettingStarted
  url: https://docs.quadrata.com/integration/how-to-integrate/quadrata-sdk/get-started-quickly
- type: APIReference
  url: https://docs.quadrata.com/integration/how-to-integrate/quadrata-sdk/advanced/api-libraries/api-service-libraries
- type: SignUp
  url: https://quadrata.com/onboard
- type: TermsOfService
  url: https://quadrata.com/terms
- type: PrivacyPolicy
  url: https://quadrata.com/privacy
- type: Blog
  url: https://medium.com/quadrata-network
- type: Support
  url: https://discord.com/invite/67QgzrymHW
- type: Twitter
  url: https://twitter.com/QuadrataNetwork
- type: LinkedIn
  url: https://www.linkedin.com/company/quadrata-inc/
- type: Sandbox
  url: https://sandbox.quadrata.com
- type: Authentication
  url: authentication/quadrata-authentication.yml
- type: Conventions
  url: conventions/quadrata-conventions.yml
- type: ErrorCatalog
  url: errors/quadrata-error-codes.yml
- type: Webhooks
  url: asyncapi/quadrata-webhooks.yml
- type: DataModel
  url: data-model/quadrata-data-model.yml
- type: Packages
  url: packages/quadrata-packages.yml
- type: SDKs
  url: packages/quadrata-packages.yml
- type: Components
  url: components/quadrata-components.yml
- type: MCPServer
  url: mcp/quadrata-mcp.yml
- type: Lifecycle
  url: lifecycle/quadrata-lifecycle.yml
- type: DomainSecurity
  url: security/quadrata-domain-security.yml
- type: LLMsTxt
  url: llms/quadrata-llms.txt
- type: Sandbox
  url: sandbox/quadrata-sandbox.yml