Wefunder

Wefunder is the largest SEC-registered funding portal, the home of the Community Round — a Public Benefit Corporation (YC W13) that has helped 4,400+ founders raise over $1B from more than one million everyday investors since 2012, with notable raises from Mercury, Substack, and Replit. Its OAuth 2.0 Wefunder API v2 (api.wefunder.com) exposes public offerings, investments, campaigns, syndicates, write intents, and campaign attribution with signed webhooks, backed by an official TypeScript SDK (@wefunder/sdk) and PKCE-first authorization.

Wefunder publishes 13 APIs on the APIs.io network, including Activity API, Attribution API, Attribution Partners API, and 10 more. Tagged areas include Company, Crowdfunding, Equity Crowdfunding, Investing, and Fintech.

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

Wefunder’s developer surface includes documentation, API reference, getting-started guide, support, engineering blog, pricing, signup flow, and 23 more developer resources.

🌐 Visit website 📡 Source on GitHub

52.8/100 developing ▬ flat Agent 56/100 agent native saas Full breakdown ↓
scored 2026-09-06 · rubric v0.19.0

AccessSelf serve

1 APIs

Company Crowdfunding Equity Crowdfunding Investing Fintech Startups FundraisingSyndicatesRegulation Crowdfunding

Kin Score

Kin Score How this is scored →
scored 2026-09-06 · rubric v0.19.0

Composite quality — 52.8/100 · developing

Contract Quality 13.7 / 21

Developer Ergonomics 10.8 / 17

Access Clarity 7.6 / 17

Operational Transparency 1.2 / 11

Contract Governance 0.5 / 10

Discoverability 6.5 / 9

Regulatory Posture 9.5 / 15

Agent readiness — 56/100 · agent native

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 8 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 6 / 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

Delegated User Identity 6 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 6 / 6

Agentic Commerce Well-Known Document 0 / 5

Regulatory Posture applies to this provider. Its tags matched the Insurance 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/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from github.com/api-evangelist/wefunder: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 13

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

Open Collections 14

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

Scopes 1

OAuth scopes governing access to this provider's APIs.

Wefunder Scopes

16 scopes · authorizationCode/clientCredentials

16 scopes

SCOPES

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Wefunder Agentic Access

48 operations · 24 acting · 3 human-in-the-loop

48 operations · 24 acting

AGENTIC

Resources

Get Started 3

Portal, sign-up, and the first successful call

GettingStarted

GettingStarted

SignUp

SignUp

Sandbox

Sandbox

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 5

MCP servers, agent skills, and machine-readable catalogs

WellKnown

WellKnown

X-MCPServerCandidate

LLMsTxt

AgentSkill

AgenticAccess

Design & Contract 7

Pagination, idempotency, versioning, errors, and events

Conformance

ErrorCatalog

Lifecycle

Conventions

Idempotency

Webhooks

DataModel

Scroll for all 7

Build 3

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Packages

Packages

SDKs

SDKs

Access & Security 3

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

OAuthScopes

OAuthScopes

Operate 1

Status, limits, changes, and where to get help

Support

Support

Commercial 3

Pricing, plans, and the legal terms of use

Pricing

Pricing

TermsOfService

TermsOfService

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)

aid: wefunder
name: Wefunder
description: Wefunder is the largest SEC-registered funding portal, the home of the Community Round — a Public Benefit Corporation
  (YC W13) that has helped 4,400+ founders raise over $1B from more than one million everyday investors since 2012, with notable
  raises from Mercury, Substack, and Replit. Its OAuth 2.0 Wefunder API v2 (api.wefunder.com) exposes public offerings, investments,
  campaigns, syndicates, write intents, and campaign attribution with signed webhooks, backed by an official TypeScript SDK
  (@wefunder/sdk) and PKCE-first authorization.
url: https://raw.githubusercontent.com/api-evangelist/wefunder/refs/heads/main/apis.yml
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: high
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
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://wefunder.com/favicon.ico
x-type: company
x-source: vc-portfolio
x-backed-by:
- a16z
- y-combinator
x-tier: full
x-tier-reason: official public API with OpenAPI, SDK, and OAuth surface
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-21'
tags:
- Company
- Crowdfunding
- Equity Crowdfunding
- Investing
- Fintech
- Startups
- Fundraising
- Syndicates
- Regulation Crowdfunding
apis:
- aid: wefunder:wefunder-activity-api
  name: Wefunder Activity API
  description: The Activity API from Wefunder — 3 operation(s) for activity.
  humanURL: https://docs.wefunder.com/api-reference
  baseURL: https://api.wefunder.com
  tags:
  - Activity
  properties:
  - type: OpenAPI
    url: openapi/wefunder-activity-api-openapi.yml
  - type: Documentation
    url: https://docs.wefunder.com/api-reference
- aid: wefunder:wefunder-attribution-api
  name: Wefunder Attribution API
  description: The Attribution API from Wefunder — 2 operation(s) for attribution.
  humanURL: https://docs.wefunder.com/api-reference
  baseURL: https://api.wefunder.com
  tags:
  - Attribution
  properties:
  - type: OpenAPI
    url: openapi/wefunder-attribution-api-openapi.yml
  - type: Documentation
    url: https://docs.wefunder.com/api-reference
- aid: wefunder:wefunder-attribution-partners-api
  name: Wefunder Attribution Partners API
  description: The Attribution Partners API from Wefunder — 5 operation(s) for attribution partners.
  humanURL: https://docs.wefunder.com/api-reference
  baseURL: https://api.wefunder.com
  tags:
  - Attribution Partners
  properties:
  - type: OpenAPI
    url: openapi/wefunder-attribution-partners-api-openapi.yml
  - type: Documentation
    url: https://docs.wefunder.com/api-reference
- aid: wefunder:wefunder-attribution-webhooks-api
  name: Wefunder Attribution Webhooks API
  description: The Attribution Webhooks API from Wefunder — 5 operation(s) for attribution webhooks.
  humanURL: https://docs.wefunder.com/api-reference
  baseURL: https://api.wefunder.com
  tags:
  - Attribution Webhooks
  properties:
  - type: OpenAPI
    url: openapi/wefunder-attribution-webhooks-api-openapi.yml
  - type: Documentation
    url: https://docs.wefunder.com/api-reference
- aid: wefunder:wefunder-campaigns-api
  name: Wefunder Campaigns API
  description: The Campaigns API from Wefunder — 1 operation(s) for campaigns.
  humanURL: https://docs.wefunder.com/api-reference
  baseURL: https://api.wefunder.com
  tags:
  - Campaigns
  properties:
  - type: OpenAPI
    url: openapi/wefunder-campaigns-api-openapi.yml
  - type: Documentation
    url: https://docs.wefunder.com/api-reference
- aid: wefunder:wefunder-explore-api
  name: Wefunder Explore API
  description: The Explore API from Wefunder — 2 operation(s) for explore.
  humanURL: https://docs.wefunder.com/api-reference
  baseURL: https://api.wefunder.com
  tags:
  - Explore
  properties:
  - type: OpenAPI
    url: openapi/wefunder-explore-api-openapi.yml
  - type: Documentation
    url: https://docs.wefunder.com/api-reference
- aid: wefunder:wefunder-intents-api
  name: Wefunder Intents API
  description: The Intents API from Wefunder — 2 operation(s) for intents.
  humanURL: https://docs.wefunder.com/api-reference
  baseURL: https://api.wefunder.com
  tags:
  - Intents
  properties:
  - type: OpenAPI
    url: openapi/wefunder-intents-api-openapi.yml
  - type: Documentation
    url: https://docs.wefunder.com/api-reference
- aid: wefunder:wefunder-investments-api
  name: Wefunder Investments API
  description: The Investments API from Wefunder — 1 operation(s) for investments.
  humanURL: https://docs.wefunder.com/api-reference
  baseURL: https://api.wefunder.com
  tags:
  - Investments
  properties:
  - type: OpenAPI
    url: openapi/wefunder-investments-api-openapi.yml
  - type: Documentation
    url: https://docs.wefunder.com/api-reference
- aid: wefunder:wefunder-syndicate-deals-api
  name: Wefunder Syndicate Deals API
  description: The Syndicate Deals API from Wefunder — 5 operation(s) for syndicate deals.
  humanURL: https://docs.wefunder.com/api-reference
  baseURL: https://api.wefunder.com
  tags:
  - Syndicate Deals
  properties:
  - type: OpenAPI
    url: openapi/wefunder-syndicate-deals-api-openapi.yml
  - type: Documentation
    url: https://docs.wefunder.com/api-reference
- aid: wefunder:wefunder-syndicate-members-api
  name: Wefunder Syndicate Members API
  description: The Syndicate Members API from Wefunder — 12 operation(s) for syndicate members.
  humanURL: https://docs.wefunder.com/api-reference
  baseURL: https://api.wefunder.com
  tags:
  - Syndicate Members
  properties:
  - type: OpenAPI
    url: openapi/wefunder-syndicate-members-api-openapi.yml
  - type: Documentation
    url: https://docs.wefunder.com/api-reference
- aid: wefunder:wefunder-syndicate-statistics-api
  name: Wefunder Syndicate Statistics API
  description: The Syndicate Statistics API from Wefunder — 1 operation(s) for syndicate statistics.
  humanURL: https://docs.wefunder.com/api-reference
  baseURL: https://api.wefunder.com
  tags:
  - Syndicate Statistics
  properties:
  - type: OpenAPI
    url: openapi/wefunder-syndicate-statistics-api-openapi.yml
  - type: Documentation
    url: https://docs.wefunder.com/api-reference
- aid: wefunder:wefunder-syndicates-api
  name: Wefunder Syndicates API
  description: The Syndicates API from Wefunder — 2 operation(s) for syndicates.
  humanURL: https://docs.wefunder.com/api-reference
  baseURL: https://api.wefunder.com
  tags:
  - Syndicates
  properties:
  - type: OpenAPI
    url: openapi/wefunder-syndicates-api-openapi.yml
  - type: Documentation
    url: https://docs.wefunder.com/api-reference
- aid: wefunder:wefunder-users-api
  name: Wefunder Users API
  description: The Users API from Wefunder — 1 operation(s) for users.
  humanURL: https://docs.wefunder.com/api-reference
  baseURL: https://api.wefunder.com
  tags:
  - User
  tags_raw:
  - Users
  properties:
  - type: OpenAPI
    url: openapi/wefunder-users-api-openapi.yml
  - type: Documentation
    url: https://docs.wefunder.com/api-reference
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Overlay
  url: overlays/wefunder-api-overlay.yaml
- type: DomainSecurity
  url: security/wefunder-domain-security.yml
- type: Website
  url: https://wefunder.com
- type: Documentation
  url: https://docs.wefunder.com
- type: APIReference
  url: https://docs.wefunder.com/api-reference
- type: GettingStarted
  url: https://github.com/Wefunder/wefunder-node#quickstart-server-to-server
- type: Support
  url: https://help.wefunder.com
- type: Blog
  url: https://wefunder.com/blog
- type: GitHubOrganization
  url: https://github.com/Wefunder
- type: Pricing
  url: https://wefunder.com/pricing
- type: TermsOfService
  url: https://wefunder.com/terms
- type: PrivacyPolicy
  url: https://wefunder.com/terms#privacy
- type: SignUp
  url: https://wefunder.com/signup
- type: Packages
  url: packages/wefunder-packages.yml
- type: SDKs
  url: packages/wefunder-packages.yml
- type: WellKnown
  url: well-known/wefunder-well-known.yml
- type: X-MCPServerCandidate
  url: mcp/wefunder-mcp.yml
  note: 'Renamed from MCPServer 2026-09-03 (roadmap#247): the manifest self-describes as status: candidate — a tool list derived
    from the published API contracts, not an existing server. The scorer already read the manifest and reported mcp_server
    correctly; the MCPServer type was crediting the artifact-type surfaces with a server that does not exist.'
- type: LLMsTxt
  url: llms/wefunder-llms.txt
- type: Conformance
  url: conformance/wefunder-conformance.yml
- type: ErrorCatalog
  url: errors/wefunder-problem-types.yml
- type: Lifecycle
  url: lifecycle/wefunder-lifecycle.yml
- type: Sandbox
  url: sandbox/wefunder-sandbox.yml
- type: Conventions
  url: conventions/wefunder-conventions.yml
- type: Idempotency
  url: conventions/wefunder-conventions.yml
- type: Webhooks
  url: asyncapi/wefunder-webhooks.yml
- type: DataModel
  url: data-model/wefunder-data-model.yml
- type: AgentSkill
  url: skills/_index.yml
- type: AgenticAccess
  url: agentic-access/wefunder-agentic-access.yml
- type: Authentication
  url: authentication/wefunder-authentication.yml
- type: OAuthScopes
  url: scopes/wefunder-scopes.yml
x-enrichment:
  date: '2026-07-21'
  status: enriched
  artifacts_added: 22
  pass: local-v1

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