Preqin

Preqin provides data, analytics and insights on alternative assets and private markets. It serves investors, fund managers and service providers with comprehensive research, benchmarks, performance data, fundraising information, and deal flow across private equity, hedge funds, real estate, infrastructure, private debt and natural resources. The platform offers tools for market intelligence, portfolio analysis and strategic decision‑making, helping clients navigate the complex landscape of private capital.

Preqin publishes 11 API contracts indexed on the APIs.io network, including Active User Subscription Info API, Connect API, Deal API, and 8 more. Tagged areas include Company, Alternative Assets, Data, Analytics, and Private Markets.

The Preqin catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.

Preqin’s developer surface includes changelog, support, signup flow, API reference, authentication, and 17 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

42.3/100 developing Agent 23/100 agent aware Full breakdown ↓
scored 2026-11-13 · rubric v0.28.0 · Show this score on your site →

1 published contract 1 Agent Skills

Company Alternative Assets Data Analytics Private Markets Research

Kin Score

Kin Score How this is scored →
scored 2026-11-13 · rubric v0.28.0

Composite quality — 42.3/100 · developing

Contract Quality 13.8 / 21

Developer Ergonomics 4.4 / 17

Access Clarity 4.7 / 17

Operational Transparency 3.2 / 11

Contract Governance 2.2 / 10

Discoverability 6.5 / 9

Regulatory Posture 3.7 / 15

Agent readiness — 23/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 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 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

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 0 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) 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.

Create-or-Update Ergonomics could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

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/.

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Agent readiness — checks not met, largest first (exact, from this profile):

Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented) Ask about this →
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0 Ask about this →
Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented) Ask about this →
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link Ask about this →
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document Ask about this →
Delegated User Identity +6 pts — a served discovery document listing authorization_code in grant_types_supported (served), else an oauth2 authorizationCode flow or openIdConnect declared in an OpenAPI (documented) Ask about this →

8 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Developer Ergonomics scores 25.6 — up to +14.9 composite points Ask about this →
Access Clarity scores 27.7 — up to +14.5 composite points Ask about this →
Contract Governance scores 22.0 — up to +9.4 composite points Ask about this →

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

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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 the provider profile at artifacts.apis.io/preqin/apis.yml: open an issue on github.com/api-evangelist/preqin to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Standards implemented 2

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

Model Context Protocol (MCP)

measured — observed by APIs.io (documented)

OpenAPI

measured — observed by APIs.io (published)

APIs 11

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

Preqin Active User Subscription Info API

Information relating to a user's API subscription

Preqin Connect API

Acquire access tokens for the Operational API using your username and API key.

Preqin Deal API

Access Preqin Deal data, including deal details and service provider information.

Preqin Fund API

Fund data, including lookups by service provider and investor.

Preqin Fund Manager API

Endpoints for accessing Preqin Fund Manager data, including firm details, contacts, and deals.

Preqin Fund Performance API

Fund Performance data for various asset classes.

Preqin Investment Consultant API

Investment Consultant data and related information

Preqin Investor API

Retrieve investor profiles, preferences, and allocation details.

Preqin Investor Commitment (Add-on) API

Retrieve investor commitment data, including commitment sizes and the funds and managers to which investors have committed.

Preqin News API

Investor News data

Preqin Service Provider API

Information about Service Providers, their deals, funds, contacts, and addresses.

Scroll for all 11

Agent Skills 1

Packaged agent skills for driving this provider's APIs from an AI assistant.

preqin-auth-token

AGENT SKILL

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Preqin Context

87 classes · 1060 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs. Counts are the severity each rule declares, not results of running them.

Preqin API Rules

61 rules · 46 error-severity 14 warn-severity 1 info-severity

SPECTRAL

6 properties

JSON SCHEMA

Scroll for all 27

Security Posture 2

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

Preqin Authentication

http · 1 scheme

SECURITY

Preqin Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Agentic Access (API Evangelist recommendations) 1

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

Preqin Agentic Access

40 operations · 2 acting

AGENTIC

Resources

Get Started 1

Portal, sign-up, and the first successful call

SignUp

SignUp

Documentation 1

Reference material describing how the API behaves

APIReference

APIReference

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

AgentSkill

AgentSkill

WellKnown

WellKnown

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

Spectral

JSONLD

Vocabulary

DataModel

ErrorCatalog

Conformance

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 3

Authentication, authorization, and security posture

SecurityTxt

SecurityTxt

Authentication

Authentication

DomainSecurity

DomainSecurity

Operate 2

Status, limits, changes, and where to get help

ChangeLog

ChangeLog

Support

Support

Commercial 2

Pricing, plans, and the legal terms of use

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 1

The organization behind the API

Website

Website

Other 2

Properties that don't map to a standard resource type

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: preqin
name: Preqin
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source:
  - authentication
  - security
  generated: '2026-11-13'
  method: derived
image: https://images.ctfassets.net/zf87m07ner47/2IXh2VFCSRumesciJ1Mhoh/73ae2b52b3bc33113c22c86e12883a93/Preqin-logo_1__1_.svg
description: Preqin provides data, analytics and insights on alternative assets and private markets. It serves investors,
  fund managers and service providers with comprehensive research, benchmarks, performance data, fundraising information,
  and deal flow across private equity, hedge funds, real estate, infrastructure, private debt and natural resources. The platform
  offers tools for market intelligence, portfolio analysis and strategic decision‑making, helping clients navigate the complex
  landscape of private capital.
url: https://artifacts.apis.io/preqin/apis.yml
x-type: company
x-source: harvest:capability-gaps
x-tier: profiled
x-tier-reason: enrichment pass 2026-11-09 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-11-09'
modified: '2026-11-09'
tags:
- Company
- Alternative Assets
- Data
- Analytics
- Private Markets
- Research
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: AgenticAccess
  url: agentic-access/preqin-agentic-access.yml
- type: Spectral
  url: rules/preqin-rules.yml
- type: JSONLD
  url: json-ld/preqin-context.jsonld
- type: Vocabulary
  url: vocabulary/preqin-vocabulary.yml
- type: AgentSkill
  url: skills/_index.yml
- type: DataModel
  url: data-model/preqin-data-model.yml
- type: ChangeLog
  url: changelog/preqin-changelog.yml
- type: ErrorCatalog
  url: errors/preqin-problem-types.yml
- type: Conformance
  url: conformance/preqin-conformance.yml
- type: SecurityTxt
  url: well-known/preqin-help-security.txt
- type: WellKnown
  url: well-known/preqin-well-known.yml
- type: Hosts
  url: hosts/preqin-hosts.yml
- type: Vendors
  url: vendors/preqin-vendors.yml
- type: TermsOfService
  url: https://www.preqin.com/policies/terms-conditions
- type: Support
  url: https://help.preqin.com/en/
- type: SignUp
  url: https://www.preqin.com/registerinterest/demo
- type: PrivacyPolicy
  url: https://www.preqin.com/policies/privacy-policy
- type: APIReference
  url: https://developer.preqin.com/
- type: GitHubOrganization
  url: https://github.com/preqin
- type: Authentication
  url: authentication/preqin-authentication.yml
- type: DomainSecurity
  url: security/preqin-domain-security.yml
- type: Website
  url: https://www.preqin.com/
apis:
- aid: preqin:preqin-active-user-subscription-info-api
  name: Preqin Active User Subscription Info API
  description: Information relating to a user's API subscription
  humanURL: https://developer.preqin.com/
  baseURL: https://api.preqin.com
  tags:
  - Active User Subscription Info
  properties:
  - type: OpenAPI
    url: openapi/preqin-active-user-subscription-info-api-openapi.yml
- aid: preqin:preqin-connect-api
  name: Preqin Connect API
  description: Acquire access tokens for the Operational API using your username and API key.
  humanURL: https://developer.preqin.com/
  baseURL: https://api.preqin.com
  tags:
  - Connect
  properties:
  - type: OpenAPI
    url: openapi/preqin-connect-api-openapi.yml
  - type: JSONSchema
    url: json-schema/preqin-refresh-token-response-schema.json
- aid: preqin:preqin-deal-api
  name: Preqin Deal API
  description: Access Preqin Deal data, including deal details and service provider information.
  humanURL: https://developer.preqin.com/
  baseURL: https://api.preqin.com
  tags:
  - Deal
  properties:
  - type: OpenAPI
    url: openapi/preqin-deal-api-openapi.yml
  - type: JSONSchema
    url: json-schema/preqin-document-of-deal-service-provider-lookup-response-schema.json
- aid: preqin:preqin-fund-api
  name: Preqin Fund API
  description: Fund data, including lookups by service provider and investor.
  humanURL: https://developer.preqin.com/
  baseURL: https://api.preqin.com
  tags:
  - Fund
  properties:
  - type: OpenAPI
    url: openapi/preqin-fund-api-openapi.yml
  - type: JSONSchema
    url: json-schema/preqin-document-of-fund-service-provider-lookup-response-schema.json
  - type: JSONSchema
    url: json-schema/preqin-document-of-fund-investor-lookup-response-schema.json
  - type: JSONSchema
    url: json-schema/preqin-document-of-funds-response-schema.json
- aid: preqin:preqin-fund-manager-api
  name: Preqin Fund Manager API
  description: Endpoints for accessing Preqin Fund Manager data, including firm details, contacts, and deals.
  humanURL: https://developer.preqin.com/
  baseURL: https://api.preqin.com
  tags:
  - Fund Manager
  properties:
  - type: OpenAPI
    url: openapi/preqin-fund-manager-api-openapi.yml
  - type: JSONSchema
    url: json-schema/preqin-document-of-deal-by-fund-manager-response-schema.json
  - type: JSONSchema
    url: json-schema/preqin-document-of-investors-address-response-schema.json
  - type: JSONSchema
    url: json-schema/preqin-document-of-fund-managers-response-schema.json
  - type: JSONSchema
    url: json-schema/preqin-document-of-contacts-response-schema.json
- aid: preqin:preqin-fund-performance-api
  name: Preqin Fund Performance API
  description: Fund Performance data for various asset classes.
  humanURL: https://developer.preqin.com/
  baseURL: https://api.preqin.com
  tags:
  - Fund Performance
  properties:
  - type: OpenAPI
    url: openapi/preqin-fund-performance-api-openapi.yml
  - type: JSONSchema
    url: json-schema/preqin-document-of-fund-performance-cash-flow-response-schema.json
  - type: JSONSchema
    url: json-schema/preqin-document-of-fund-performance-aumresponse-schema.json
  - type: JSONSchema
    url: json-schema/preqin-document-of-fund-performance-response-pe-schema.json
  - type: JSONSchema
    url: json-schema/preqin-document-of-fund-performance-response-schema.json
  - type: JSONSchema
    url: json-schema/preqin-document-of-fund-metrics-response-schema.json
  - type: JSONSchema
    url: json-schema/preqin-document-of-hffund-response-schema.json
- aid: preqin:preqin-investment-consultant-api
  name: Preqin Investment Consultant API
  description: Investment Consultant data and related information
  humanURL: https://developer.preqin.com/
  baseURL: https://api.preqin.com
  tags:
  - Investment Consultant
  properties:
  - type: OpenAPI
    url: openapi/preqin-investment-consultant-api-openapi.yml
  - type: JSONSchema
    url: json-schema/preqin-document-of-investment-consultant-known-clients-response-schema.json
  - type: JSONSchema
    url: json-schema/preqin-document-of-investment-consultant-address-response-schema.json
  - type: JSONSchema
    url: json-schema/preqin-document-of-investment-consultant-contact-response-schema.json
- aid: preqin:preqin-investor-api
  name: Preqin Investor API
  description: Retrieve investor profiles, preferences, and allocation details.
  humanURL: https://developer.preqin.com/
  baseURL: https://api.preqin.com
  tags:
  - Investor
  properties:
  - type: OpenAPI
    url: openapi/preqin-investor-api-openapi.yml
  - type: JSONSchema
    url: json-schema/preqin-document-of-investors-address-response-schema.json
  - type: JSONSchema
    url: json-schema/preqin-document-of-investors-response-schema.json
  - type: JSONSchema
    url: json-schema/preqin-document-of-contacts-response-schema.json
- aid: preqin:preqin-investor-commitment-add-on-api
  name: Preqin Investor Commitment (Add-on) API
  description: Retrieve investor commitment data, including commitment sizes and the funds and managers to which investors
    have committed.
  humanURL: https://developer.preqin.com/
  baseURL: https://api.preqin.com
  tags:
  - Investor Commitment (Add-on)
  properties:
  - type: OpenAPI
    url: openapi/preqin-investor-commitment-add-on-api-openapi.yml
  - type: JSONSchema
    url: json-schema/preqin-document-of-investor-commitment-infresponse-schema.json
  - type: JSONSchema
    url: json-schema/preqin-document-of-investor-commitment-hfresponse-schema.json
  - type: JSONSchema
    url: json-schema/preqin-document-of-investor-commitment-nrresponse-schema.json
  - type: JSONSchema
    url: json-schema/preqin-document-of-investor-commitment-pdresponse-schema.json
  - type: JSONSchema
    url: json-schema/preqin-document-of-investor-commitment-peresponse-schema.json
  - type: JSONSchema
    url: json-schema/preqin-document-of-investor-commitment-reresponse-schema.json
- aid: preqin:preqin-news-api
  name: Preqin News API
  description: Investor News data
  humanURL: https://developer.preqin.com/
  baseURL: https://api.preqin.com
  tags:
  - News
  properties:
  - type: OpenAPI
    url: openapi/preqin-news-api-openapi.yml
  - type: JSONSchema
    url: json-schema/preqin-document-of-news-response-schema.json
- aid: preqin:preqin-service-provider-api
  name: Preqin Service Provider API
  description: Information about Service Providers, their deals, funds, contacts, and addresses.
  humanURL: https://developer.preqin.com/
  baseURL: https://api.preqin.com
  tags:
  - Service Providers
  tags_raw:
  - Service Provider
  properties:
  - type: OpenAPI
    url: openapi/preqin-service-provider-api-openapi.yml
  - type: JSONSchema
    url: json-schema/preqin-document-of-service-provider-funds-lookup-response-schema.json
x-enrichment:
  date: '2026-11-09'
  status: enriched
  artifacts_added: 21
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

Preqin API — frequently asked questions

Does Preqin have an API?

Yes. APIs.io lists 11 APIs from Preqin, including Preqin Active User Subscription Info API, Preqin Connect API and Preqin Deal API, and 8 more.

Is there an OpenAPI specification for the Preqin API?

Yes. APIs.io indexes 11 OpenAPI specifications for Preqin, each linked for download from this page.

How do I authenticate with the Preqin API?

Preqin uses bearer-token authentication (http · 1 scheme). The details are profiled on APIs.io as Preqin Authentication.

Is the Preqin API ready for AI agents?

Preqin has a Kin Score of 42.3 out of 100 (developing) and an Agent Readiness score of 22.8 (agent-aware), scored by API Evangelist on 2026-11-13.

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