Spindl

Spindl is a Web3 growth platform providing onchain attribution, web3-native analytics, audiences, short links, referrals, and ads in one place, helping developers understand where their users come from and how they behave across onchain apps. It offers a JavaScript/HTML SDK, Android and iOS SDKs, and a Server-to-Server REST API for campaign and attribution management, short (redirect) links, server-side custom event ingestion, and daily data exports. Positioned as Web3's answer to Mixpanel and Amplitude, Spindl is used by teams including Uniswap, Base, Safe, and Morpho. A separate publisher-facing Ads API on e.spindlembed.com serves targeted onchain ad recommendations and records impressions and clicks, with a React BannerEmbed component and a hosted iframe as no-code alternatives. Spindl announced in January 2025 that it was joining Coinbase and now operates as a product team inside Base. Originally added to the API Evangelist network as a portfolio-lead stub, now enriched from its published developer documentation and live host probes.

Spindl publishes 3 APIs on the APIs.io network: Events API, Short Links API, and Ads API. Tagged areas include Company, Crypto Web3, Attribution, Analytics, and Marketing.

Spindl’s developer surface includes authentication, documentation, getting-started guide, engineering blog, signup flow, support, and 19 more developer resources.

🌐 Visit website 📡 Source on GitHub
42.3/100 developing ▬ flat Agent 46/100 agent ready Full breakdown ↓
scored 2026-08-17 · rubric v0.11.0
AccessSelf serve
3 APIs 1 MCP Servers
CompanyCrypto Web3AttributionAnalyticsMarketingGrowthSDKWeb3

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-08-17 · rubric v0.11.0
Composite quality — 42.3/100 · developing
Contract Quality 16.1 / 25
Developer Ergonomics 11.2 / 20
Commercial Clarity 4.7 / 20
Operational Transparency 0.7 / 13
Governance 1.4 / 12
Discoverability 8.2 / 10
Agent readiness — 46/100 · agent ready
Machine-Readable Contract 18 / 18
Agentic Access Contract 0 / 10
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 7 / 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
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/spindl: 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 3

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

Spindl Events API

Server-side custom event ingestion for attribution.

Spindl Short Links API

Redirect links mapping a Spindl link to a destination URL.

Spindl Ads API

Publisher-facing onchain advertising API. Fetch targeted ad recommendations for a wallet address at a named placement, render the returned unit, and post impressions and clicks ...

Open Collections 3

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

API Collection

OPEN COLLECTION

Spindl Server-to-Server Events API

OPEN COLLECTION

Spindl Server-to-Server Events Short Links API

OPEN COLLECTION

MCP Servers 1

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

spindl-mcp.yml

MCP SERVER

Pricing Plans 1

Published pricing tiers and plan structures.

Spindl Plans Pricing

0 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Spindl Rate Limits

0 limits

RATE LIMITS

Security Posture 2

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

Spindl Authentication

apiKey · 2 schemes

SECURITY

Spindl Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Get Started 3

Portal, sign-up, and the first successful call

DeveloperPortal
DeveloperPortal
 GettingStarted
GettingStarted
 SignUp
SignUp

Documentation 1

Reference material describing how the API behaves

Documentation
Documentation

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

MCPServer
MCPServer
 LLMsTxt
LLMsTxt
 AgentSkill
AgentSkill

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

Conventions
Conventions
 ErrorCatalog
ErrorCatalog
 Lifecycle
Lifecycle
 Conformance
Conformance
 DataModel
DataModel
 Components
Components

Build 3

SDKs, sample code, and the tooling you integrate with

Packages
Packages
 SDKs
SDKs
 GitHubOrganization
GitHubOrganization

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity
 Authentication
Authentication

Operate 2

Status, limits, changes, and where to get help

RateLimits
RateLimits
 Support
Support

Commercial 2

Pricing, plans, and the legal terms of use

Plans
Plans
 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: spindl
name: Spindl
description: Spindl is a Web3 growth platform providing onchain attribution, web3-native analytics, audiences, short links,
  referrals, and ads in one place, helping developers understand where their users come from and how they behave across onchain
  apps. It offers a JavaScript/HTML SDK, Android and iOS SDKs, and a Server-to-Server REST API for campaign and attribution
  management, short (redirect) links, server-side custom event ingestion, and daily data exports. Positioned as Web3's answer
  to Mixpanel and Amplitude, Spindl is used by teams including Uniswap, Base, Safe, and Morpho. A separate publisher-facing
  Ads API on e.spindlembed.com serves targeted onchain ad recommendations and records impressions and clicks, with a React
  BannerEmbed component and a hosted iframe as no-code alternatives. Spindl announced in January 2025 that it was joining
  Coinbase and now operates as a product team inside Base. Originally added to the API Evangelist network as a portfolio-lead
  stub, now enriched from its published developer documentation and live host probes.
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://spindl.xyz/favicon.png
url: https://raw.githubusercontent.com/api-evangelist/spindl/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'
created: '2026-07-17'
modified: '2026-08-13'
x-enrichment:
  date: '2026-08-13'
  status: enriched
  artifacts_added: 8
  pass: local-v1
tags:
- Company
- Crypto Web3
- Attribution
- Analytics
- Marketing
- Growth
- SDK
- Web3
apis:
- aid: spindl:spindl-events-api
  name: Spindl Events API
  description: Server-side custom event ingestion for attribution.
  humanURL: https://docs.spindl.xyz/technical/api/custom-events-api
  baseURL: https://api.spindl.xyz/v1
  tags:
  - Events
  properties:
  - type: OpenAPI
    url: openapi/spindl-events-api-openapi.yml
  - type: APIReference
    url: https://docs.spindl.xyz/technical/api/custom-events-api
- aid: spindl:spindl-short-links-api
  name: Spindl Short Links API
  description: Redirect links mapping a Spindl link to a destination URL.
  humanURL: https://docs.spindl.xyz/technical/api/short-links
  baseURL: https://api.spindl.xyz/v1
  tags:
  - Short Links
  properties:
  - type: OpenAPI
    url: openapi/spindl-short-links-api-openapi.yml
  - type: APIReference
    url: https://docs.spindl.xyz/technical/api/short-links
- aid: spindl:spindl-ads-api
  name: Spindl Ads API
  description: Publisher-facing onchain advertising API. Fetch targeted ad recommendations for a wallet address at a named
    placement, render the returned unit, and post impressions and clicks back to Spindl. Also serves a hosted iframe ad unit
    for direct embedding. Documented on Spindl's own docs host and backed by Spindl's own @spindl-xyz/embed-react component.
  humanURL: https://docs.spindl.xyz/ads/start-here
  baseURL: https://e.spindlembed.com/v1
  tags:
  - Ads
  - Advertising
  - Onchain
  properties:
  - type: OpenAPI
    url: openapi/spindl-ads-api-openapi.yml
  - type: APIReference
    url: https://docs.spindl.xyz/ads/start-here
  - type: Overlay
    url: overlays/spindl-ads-api-overlay.yaml
  - type: Components
    url: components/spindl-components.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Overlay
  url: overlays/spindl-openapi-overlay.yaml
- type: DomainSecurity
  url: security/spindl-domain-security.yml
- type: Authentication
  url: authentication/spindl-authentication.yml
- type: Packages
  url: packages/spindl-packages.yml
- type: SDKs
  url: packages/spindl-packages.yml
- type: MCPServer
  url: mcp/spindl-mcp.yml
- type: LLMsTxt
  url: llms/spindl-llms.txt
- type: Conventions
  url: conventions/spindl-conventions.yml
- type: ErrorCatalog
  url: errors/spindl-problem-types.yml
- type: Lifecycle
  url: lifecycle/spindl-lifecycle.yml
- type: Conformance
  url: conformance/spindl-conformance.yml
- type: DataModel
  url: data-model/spindl-data-model.yml
- type: AgentSkill
  url: skills/_index.yml
- type: Components
  url: components/spindl-components.yml
- type: Plans
  url: plans/spindl-plans-pricing.yml
- type: RateLimits
  url: rate-limits/spindl-rate-limits.yml
- type: Website
  url: https://spindl.xyz
- type: DeveloperPortal
  url: https://docs.spindl.xyz
- type: Documentation
  url: https://docs.spindl.xyz
- type: GettingStarted
  url: https://docs.spindl.xyz/technical/start-here
- type: Blog
  url: https://blog.spindl.xyz
- type: GitHubOrganization
  url: https://github.com/spindl-xyz
- type: SignUp
  url: https://app.spindl.xyz
- type: Support
  url: https://docs.spindl.xyz/contact-spindl
- type: PrivacyPolicy
  url: https://spindl.xyz/privacy-policy