Quantstamp

Quantstamp is a blockchain security firm founded in 2017 that provides expert Web3 security assessments, including smart contract audits, infrastructure and Layer 2 audits, zero-knowledge circuit reviews, and economic exploit analysis. The company has conducted over 1,300 audits across more than 60 blockchain ecosystems and helped secure billions of dollars in digital assets. Quantstamp publishes public audit reports through its certificate portal, maintains open-source Web3 security tooling on GitHub (L2 block explorer standards, ERC-4337 checkers, halo2 zero-knowledge libraries), and runs a research blog. Quantstamp is a services and consulting provider rather than an API-first platform, and does not currently publish a first-party developer API or OpenAPI specification. Backed by SoftBank Vision Fund.

Quantstamp is profiled on the APIs.io network. Tagged areas include Company, Enterprise, Blockchain, Security, and Smart Contracts.

Quantstamp’s developer surface includes engineering blog and 4 more developer resources.

🌐 Visit website 📡 Source on GitHub

9.6/100 minimal ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-07-27 · rubric v0.5

0 APIs

CompanyEnterpriseBlockchainSecuritySmart ContractsWeb3AuditingCryptography

Kin Score

Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5

Composite quality — 9.6/100 · minimal

Contract Quality 0.0 / 25

Developer Ergonomics 2.2 / 20

Commercial Clarity 0.0 / 20

Operational Transparency 0.7 / 13

Governance 0.0 / 12

Discoverability 6.8 / 10

Agent readiness — 0/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 15

MCP Server 0 / 12

Machine-Readable Auth 0 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 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/quantstamp: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

Get Started 1

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Company 2

The organization behind the API

Website

Website

Blog

Blog

Source (apis.yml)

aid: quantstamp
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/quantstamp.png
name: Quantstamp
description: Quantstamp is a blockchain security firm founded in 2017 that provides expert Web3 security assessments, including
  smart contract audits, infrastructure and Layer 2 audits, zero-knowledge circuit reviews, and economic exploit analysis.
  The company has conducted over 1,300 audits across more than 60 blockchain ecosystems and helped secure billions of dollars
  in digital assets. Quantstamp publishes public audit reports through its certificate portal, maintains open-source Web3
  security tooling on GitHub (L2 block explorer standards, ERC-4337 checkers, halo2 zero-knowledge libraries), and runs a
  research blog. Quantstamp is a services and consulting provider rather than an API-first platform, and does not currently
  publish a first-party developer API or OpenAPI specification. Backed by SoftBank Vision Fund.
url: https://raw.githubusercontent.com/api-evangelist/quantstamp/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- softbank-vision-fund
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-20'
tags:
- Company
- Enterprise
- Blockchain
- Security
- Smart Contracts
- Web3
- Auditing
- Cryptography
apis: []
common:
- type: DomainSecurity
  url: security/quantstamp-domain-security.yml
- type: Website
  url: https://quantstamp.com
- type: DeveloperPortal
  url: https://quantstamp.com
- type: GitHubOrganization
  url: https://github.com/quantstamp
- type: Blog
  url: https://quantstamp.com/blog
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
x-enrichment:
  date: '2026-07-20'
  status: minimal
  artifacts_added: 1
  pass: local-v1