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
40.8/100 developing ▬ flat Agent 33/100 agent aware Full breakdown ↓
scored 2026-08-20 · rubric v0.12.0
AccessSelf serve
1 APIs 1 MCP Servers
CompanyCrypto Web3IdentityDigital IdentityKYCKYBAMLComplianceWallet ScreeningBlockchainWeb3Decentralized Identity

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-08-20 · rubric v0.12.0
Composite quality — 40.8/100 · developing
Contract Quality 9.6 / 21
Developer Ergonomics 12.1 / 17
Access Clarity 5.8 / 17
Operational Transparency 0.9 / 11
Contract Governance 0.0 / 10
Discoverability 6.5 / 9
Regulatory Posture 4.7 / 15
Agent readiness — 33/100 · agent aware
Machine-Readable Contract 18 / 18
Agentic Access Contract 0 / 10
Documented Reversibility 0 / 6
MCP Server 0 / 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
A2A Agent Card 0 / 8
Dry-Run / Simulate Mode 0 / 4
Regulatory Posture applies to this provider. Its tags matched the Payments 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.
The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.
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 Server

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: '0.23'
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