Nansen

Nansen is an onchain analytics platform with wallet labeling, smart-money tracking, token screener, portfolio, prediction markets, and AI Agent endpoints across 30+ chains. The Nansen API exposes REST endpoints under api.nansen.ai with Smart Money, Profiler, Token Screener, Portfolio, Points, Hyperliquid, Agent, and Prediction Markets categories.

Nansen publishes 1 API on the APIs.io network: Smart Money API. Tagged areas include Web3, Crypto, Onchain, Wallet Labels, and Smart Money.

Nansen’s developer surface includes authentication, developer portal, documentation, pricing, engineering blog, and 8 more developer resources.

🌐 Visit website 📡 Source on GitHub

28.1/100 thin ▬ flat Agent 23/100 agent aware Full breakdown ↓
scored 2026-08-25 · rubric v0.14.0

AccessPaidSelf serve

2 APIs

Web3 Crypto OnchainWallet LabelsSmart MoneyAnalytics Multi-Chain

Kin Score

Kin Score How this is scored →
scored 2026-08-25 · rubric v0.14.0

Composite quality — 28.1/100 · thin

Contract Quality 10.1 / 21

Developer Ergonomics 5.7 / 17

Access Clarity 2.2 / 17

Operational Transparency 1.2 / 11

Contract Governance 0.0 / 10

Discoverability 6.5 / 9

Regulatory Posture 2.8 / 15

Agent readiness — 23/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 6 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 9 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 4 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Surface 0 / 5

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/nansen: 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 2

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

Rate Limits 1

Documented rate limits and quota policies.

Nansen Rate Limits

3 limits

RATE LIMITS

FinOps 1

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

AGENTIC

Resources

Get Started 1

Portal, sign-up, and the first successful call

Portal

Portal

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

LlmsText

LlmsText

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 1

Status, limits, changes, and where to get help

RateLimits

RateLimits

Commercial 3

Pricing, plans, and the legal terms of use

Pricing

Pricing

Plans

Plans

FinOps

FinOps

Company 2

The organization behind the API

LinkedIn

Blog

Blog

Source (apis.yml)

aid: nansen
url: https://raw.githubusercontent.com/api-evangelist/nansen/refs/heads/main/apis.yml
name: Nansen
kind: company
accessModel:
  pricing: paid
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Paid · Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/nansen.png
tags:
- Web3
- Crypto
- Onchain
- Wallet Labels
- Smart Money
- Analytics
- Multi-Chain
tags_raw:
- Web3
- Crypto
- On-Chain
- Wallet Labels
- Smart Money
- Analytics
- Multi-chain
created: '2026-05-08'
modified: '2026-05-08'
specificationVersion: '0.23'
description: Nansen is an onchain analytics platform with wallet labeling, smart-money tracking, token screener, portfolio,
  prediction markets, and AI Agent endpoints across 30+ chains. The Nansen API exposes REST endpoints under api.nansen.ai
  with Smart Money, Profiler, Token Screener, Portfolio, Points, Hyperliquid, Agent, and Prediction Markets categories.
apis:
- aid: nansen:rest-api
  name: Nansen REST API
  tags:
  - Onchain
  - Smart Money
  - Wallet Labels
  - Token Screener
  - Portfolio
  - Multi-Chain
  tags_raw:
  - On-Chain
  - Smart Money
  - Wallet Labels
  - Token Screener
  - Portfolio
  - Multi-chain
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  baseURL: https://api.nansen.ai/api/v1
  humanURL: https://docs.nansen.ai/
  description: 'REST API surfacing Nansen''s on-chain intelligence: smart-money flows, profiler (wallet labels and balances),
    token screener, portfolio, points, Hyperliquid analytics, prediction markets, and the Nansen Agent AI endpoint. Authentication
    via apiKey header. Throttled at 20 requests per second and 300 per minute by default.'
  properties:
  - type: Documentation
    url: https://docs.nansen.ai/
  - type: Pricing
    url: https://www.nansen.ai/pricing
  x-features:
  - 30+ chains coverage
  - Smart-money wallet flows
  - 300M+ wallet labels
  - Token screener
  - AI Agent endpoint
  x-use-cases:
  - Trading signal generation
  - Wallet attribution
  - Portfolio compliance and surveillance
- aid: nansen:nansen-smart-money-api
  name: Nansen Smart Money API
  description: Smart-money wallet flows and behavior.
  humanURL: https://docs.nansen.ai/
  baseURL: https://api.nansen.ai/api/v1
  tags:
  - Smart Money
  properties:
  - type: OpenAPI
    url: openapi/nansen-smart-money-api-openapi.yml
common:
- type: AgenticAccess
  url: agentic-access/nansen-agentic-access.yml
- type: DomainSecurity
  url: security/nansen-domain-security.yml
- type: Authentication
  url: authentication/nansen-authentication.yml
- type: GitHubOrganization
  url: https://github.com/nansen-ai
- type: LinkedIn
  url: https://www.linkedin.com/company/nansen
- type: Portal
  url: https://www.nansen.ai/
- type: Documentation
  url: https://docs.nansen.ai/
- type: Pricing
  url: https://www.nansen.ai/pricing
- type: Plans
  url: plans/nansen-plans-pricing.yml
- type: RateLimits
  url: rate-limits/nansen-rate-limits.yml
- type: FinOps
  url: finops/nansen-finops.yml
- type: LlmsText
  url: https://docs.nansen.ai/llms.txt
- type: Blog
  url: https://nansen.ai/blog
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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Nansen

Kin Score

APIs 2

Nansen REST API

Nansen Smart Money API

Open Collections 3

API Collection

Nansen REST Smart Money API