MSCI website screenshot

MSCI

MSCI is a leading provider of critical decision support tools and services for the global investment community, publishing indexes, ESG and climate ratings, risk analytics, and real estate and private asset data. The MSCI Developer Community at developer.msci.com catalogs thirty-plus REST APIs spanning index performance and constituents, ESG data and reports, sustainability and climate on-demand data, risk and instrument analytics, portfolio optimization, real estate performance, and private capital metrics, alongside an official Python SDK and the MSCI Connector, a Model Context Protocol server listed in the Claude connector directory.

MSCI publishes 10 APIs on the APIs.io network. Tagged areas include Financial Data, Indexes, ESG, Climate, and Risk Analytics.

MSCI’s developer surface includes documentation, API reference, support, authentication, and 14 more developer resources.

🌐 Visit website 📡 Source on GitHub
27.7/100 emerging ▬ flat Agent 25/100 agent aware Full breakdown ↓
scored 2026-07-27 · rubric v0.5
AccessSelf serve
10 APIs 1 MCP Servers
Financial DataIndexesESGClimateRisk AnalyticsReal EstatePrivate AssetsInvesting

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5
Composite quality — 27.7/100 · emerging
Contract Quality 0.0 / 25
Developer Ergonomics 10.9 / 20
Commercial Clarity 6.8 / 20
Operational Transparency 0.0 / 13
Governance 0.0 / 12
Discoverability 10.0 / 10
Agent readiness — 25/100 · agent aware
Machine-Readable Contract 0 / 18
Agentic Access Contract 0 / 15
MCP Server 12 / 12
Machine-Readable Auth 10 / 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 4 / 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/msci: 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 10

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

MSCI Index API

REST APIs for MSCI index data including index levels and performance, constituents, security master, dividends, and corporate events for MSCI indexes across supported variants a...

MSCI Real Time Index API

Real-time index and factor data API delivering intraday index levels for MSCI indexes.

MSCI ESG Data API

Retrieve current day and historical ESG data for entitled issuers, providing access to thousands of ESG data points including MSCI ESG Ratings and underlying raw data.

MSCI ESG Report API

Access ESG documents and reports for companies, funds, and industries as PDF and HTML documents.

MSCI Sustainability and Climate On-Demand API

On-demand access to MSCI sustainability and climate datasets, including climate metrics for portfolio and issuer analysis.

MSCI Risk Analytics API

RiskMetrics RiskManager-based analytics APIs for risk measurement, stress testing, and exposure analysis across portfolios.

MSCI Instrument Analytics API

Instrument-level analytics API for pricing and risk measures across asset classes using MSCI models.

MSCI Optimization Service API

Portfolio optimization service from MSCI Quantitative Investment Solutions supporting portfolio and tax-lot upload in JSON and tax-aware optimizations; accessible through the of...

MSCI Real Estate Performance and Risk Data API

Real estate index and market data API covering property fund and asset performance and risk data across global markets.

MSCI Private Asset and Deal Metrics API

Private capital data API providing asset and deal-level metrics for private asset funds and portfolios.

Scroll for all 10

MCP Servers 1

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

msci-mcp.yml

MCP SERVER

Security Posture 2

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

Msci Authentication

oauth2/openIdConnect · 3 schemes

SECURITY

Msci Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Get Started 2

Portal, sign-up, and the first successful call

DeveloperPortal
DeveloperPortal
 Login
Login

Documentation 2

Reference material describing how the API behaves

Documentation
Documentation
 APIReference
APIReference

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

WellKnown
WellKnown
 MCPServer
MCPServer
 LLMsTxt
LLMsTxt

Design & Contract 2

Pagination, idempotency, versioning, errors, and events

Conformance
Conformance
 Lifecycle
Lifecycle

Build 2

SDKs, sample code, and the tooling you integrate with

Packages
Packages
 SDKs
SDKs

Access & Security 2

Authentication, authorization, and security posture

Authentication
Authentication
 DomainSecurity
DomainSecurity

Operate 1

Status, limits, changes, and where to get help

Support
Support

Commercial 2

Pricing, plans, and the legal terms of use

TermsOfService
TermsOfService
 PrivacyPolicy
PrivacyPolicy

Company 2

The organization behind the API

LinkedIn
LinkedIn
 Website
Website

Source (apis.yml)

apis.yml Raw ↑ 
aid: msci
url: https://raw.githubusercontent.com/api-evangelist/msci/refs/heads/main/apis.yml
name: MSCI
type: Index
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://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/msci.png
description: MSCI is a leading provider of critical decision support tools and services for the global investment community,
  publishing indexes, ESG and climate ratings, risk analytics, and real estate and private asset data. The MSCI Developer
  Community at developer.msci.com catalogs thirty-plus REST APIs spanning index performance and constituents, ESG data and
  reports, sustainability and climate on-demand data, risk and instrument analytics, portfolio optimization, real estate performance,
  and private capital metrics, alongside an official Python SDK and the MSCI Connector, a Model Context Protocol server listed
  in the Claude connector directory.
created: '2026-05-05'
modified: '2026-07-22'
specificationVersion: '0.19'
tags:
- Financial Data
- Indexes
- ESG
- Climate
- Risk Analytics
- Real Estate
- Private Assets
- Investing
maintainers:
- FN: MSCI Client Service
  email: ClientService@msci.com
apis:
- name: MSCI Index API
  description: REST APIs for MSCI index data including index levels and performance, constituents, security master, dividends,
    and corporate events for MSCI indexes across supported variants and currencies.
  humanURL: https://developer.msci.com/apis/index-api
  baseURL: https://api.msci.com/index
  tags:
  - Indexes
  - Performance
  - Constituents
  properties:
  - type: Documentation
    url: https://developer.msci.com/apis/index-api
- name: MSCI Real Time Index API
  description: Real-time index and factor data API delivering intraday index levels for MSCI indexes.
  humanURL: https://developer.msci.com/apis/index-rt-api-dev-index-rt-factor-api-v1-0
  baseURL: https://api2.msci.com
  tags:
  - Indexes
  - Real Time
  properties:
  - type: Documentation
    url: https://developer.msci.com/apis/index-rt-api-dev-index-rt-factor-api-v1-0
- name: MSCI ESG Data API
  description: Retrieve current day and historical ESG data for entitled issuers, providing access to thousands of ESG data
    points including MSCI ESG Ratings and underlying raw data.
  humanURL: https://developer.msci.com/apis/esg-data-api-v3-0
  baseURL: https://api2.msci.com/esg/data/v3.0
  tags:
  - ESG
  - Ratings
  - Issuers
  properties:
  - type: Documentation
    url: https://developer.msci.com/apis/esg-data-api-v3-0
- name: MSCI ESG Report API
  description: Access ESG documents and reports for companies, funds, and industries as PDF and HTML documents.
  humanURL: https://developer.msci.com/apis/esg-report-api-v2-0
  baseURL: https://api2.msci.com
  tags:
  - ESG
  - Reports
  properties:
  - type: Documentation
    url: https://developer.msci.com/apis/esg-report-api-v2-0
- name: MSCI Sustainability and Climate On-Demand API
  description: On-demand access to MSCI sustainability and climate datasets, including climate metrics for portfolio and issuer
    analysis.
  humanURL: https://developer.msci.com/apis/sustainability-climate-on-demand-api
  baseURL: https://api2.msci.com
  tags:
  - Sustainability
  - Climate
  properties:
  - type: Documentation
    url: https://developer.msci.com/apis/sustainability-climate-on-demand-api
- name: MSCI Risk Analytics API
  description: RiskMetrics RiskManager-based analytics APIs for risk measurement, stress testing, and exposure analysis across
    portfolios.
  humanURL: https://developer.msci.com/apis/risk-analytics
  baseURL: https://api2.msci.com
  tags:
  - Risk
  - Analytics
  properties:
  - type: Documentation
    url: https://developer.msci.com/apis/risk-analytics
- name: MSCI Instrument Analytics API
  description: Instrument-level analytics API for pricing and risk measures across asset classes using MSCI models.
  humanURL: https://developer.msci.com/apis/instrument-analytics-api
  baseURL: https://api2.msci.com
  tags:
  - Analytics
  - Instruments
  properties:
  - type: Documentation
    url: https://developer.msci.com/apis/instrument-analytics-api
- name: MSCI Optimization Service API
  description: Portfolio optimization service from MSCI Quantitative Investment Solutions supporting portfolio and tax-lot
    upload in JSON and tax-aware optimizations; accessible through the official MSCI Python SDK.
  humanURL: https://developer.msci.com/apis/msci-optimization-service
  baseURL: https://api2.msci.com
  tags:
  - Optimization
  - Portfolios
  properties:
  - type: Documentation
    url: https://developer.msci.com/apis/msci-optimization-service
  - type: SDK
    url: https://pypi.org/project/msci-sdk/
- name: MSCI Real Estate Performance and Risk Data API
  description: Real estate index and market data API covering property fund and asset performance and risk data across global
    markets.
  humanURL: https://developer.msci.com/apis/real-estate-performance-risk-data-api
  baseURL: https://api2.msci.com
  tags:
  - Real Estate
  - Performance
  properties:
  - type: Documentation
    url: https://developer.msci.com/apis/real-estate-performance-risk-data-api
- name: MSCI Private Asset and Deal Metrics API
  description: Private capital data API providing asset and deal-level metrics for private asset funds and portfolios.
  humanURL: https://developer.msci.com/apis/private-asset-and-deal-metrics-api
  baseURL: https://api2.msci.com
  tags:
  - Private Assets
  - Metrics
  properties:
  - type: Documentation
    url: https://developer.msci.com/apis/private-asset-and-deal-metrics-api
common:
- type: LinkedIn
  url: https://www.linkedin.com/company/msci-inc
- type: Website
  url: https://www.msci.com
- type: DeveloperPortal
  url: https://developer.msci.com
- type: Documentation
  url: https://developer.msci.com/apis
- type: APIReference
  url: https://developer.msci.com/apis
- type: Support
  url: https://support.msci.com
- type: Login
  url: https://one.msci.com
- type: TermsOfService
  url: https://www.msci.com/terms-of-use
- type: PrivacyPolicy
  url: https://www.msci.com/privacy-pledge
- type: Packages
  url: packages/msci-packages.yml
- type: SDKs
  url: packages/msci-packages.yml
- type: WellKnown
  url: well-known/msci-well-known.yml
- type: MCPServer
  url: mcp/msci-mcp.yml
- type: LLMsTxt
  url: llms/msci-llms.txt
- type: Conformance
  url: conformance/msci-conformance.yml
- type: Authentication
  url: authentication/msci-authentication.yml
- type: Lifecycle
  url: lifecycle/msci-lifecycle.yml
- type: DomainSecurity
  url: security/msci-domain-security.yml