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 is listed with 10 APIs on the APIs.io network. Tagged areas include Financial Data, Index, ESG, Climate, and Risk Analytics.

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

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21.7/100 emerging ▬ flat Agent 15/100 agent aware Front door AI 4/6 moderate saas Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

10 APIs 1 MCP Servers

Financial Data Index ESG Climate Risk Analytics Real EstatePrivate AssetsInvesting

Kin Score

Kin Score How this is scored →
scored 2026-11-06 · rubric v0.27.0

Composite quality — 21.7/100 · emerging

Contract Quality 0.0 / 21

Developer Ergonomics 4.0 / 17

Access Clarity 4.7 / 17

Operational Transparency 0.0 / 11

Contract Governance 1.9 / 10

Discoverability 6.7 / 9

Regulatory Posture 3.7 / 15

Agent readiness — 15/100 · agent aware

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 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 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

Pagination 5 / 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):

Machine-Readable Contract +18 pts — api_specs includes an OpenAPI document
MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship
Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author
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)
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0

10 more unmet checks in the Agent Readiness table above.

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

Contract Quality scores 0.0 — up to +25.0 composite points
Developer Ergonomics scores 23.8 — up to +15.2 composite points
Access Clarity scores 27.6 — up to +14.5 composite points

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.

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/msci/apis.yml: open an issue on github.com/api-evangelist/msci 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 →

Markets this provider is in provisional

The Kin Score Market layer reads a provider inside its market: its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted: not part of the Kin Score or agent readiness.

Market	Position	Depth	Registered MCP server	Declares compatibility
Data Marketplaces (data providers on cloud data platforms)	mixed	43.7	-	-
Carbon Accounting Disclosure Standards (SBTi, PCAF, CDP, GHG Protocol)	mixed	43.7	-	-

Registered MCP server and declares compatibility are report only — not weighted. Undeclared means we found nothing we can read, so there is no number: we never infer integrations.

Standards implemented 1

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.

Dynamic Client Registration

measured — observed by APIs.io (published)

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.

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MCP Servers 1

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

MSCI Connector

Remote MCP server at mcp.msci.com over HTTP; 4 tools listed.

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

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

Website

Website

Source (apis.yml)

aid: msci
url: https://raw.githubusercontent.com/api-evangelist/msci/refs/heads/main/apis.yml
name: MSCI
type: Index
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: false
  label: Hosted service · you call their endpoint
  confidence: medium
  source:
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source:
  - authentication
  - security
  generated: '2026-11-06'
  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: '0.23'
tags:
- Financial Data
- Index
- ESG
- Climate
- Risk Analytics
- Real Estate
- Private Assets
- Investing
tags_raw:
- Financial Data
- Indexes
- ESG
- Climate
- Risk Analytics
- Real Estate
- Private Assets
- Investing
- Real-Estate
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:
  - Index
  - Performance
  - Constituents
  tags_raw:
  - 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:
  - Index
  - Real-Time
  tags_raw:
  - 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 Management
  - Analytics
  tags_raw:
  - 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
  - Portfolio
  tags_raw:
  - 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
  tags_raw:
  - Real Estate
  - Performance
  - Real-Estate
  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

MSCI API — frequently asked questions

Does MSCI have an API?

Yes. APIs.io lists 10 APIs from MSCI, including MSCI Index API, MSCI Real Time Index API and MSCI ESG Data API, and 7 more.

How do I authenticate with the MSCI API?

MSCI documents its authentication (oauth2/openIdConnect · 3 schemes). The details are profiled on APIs.io as Msci Authentication.

Does MSCI have an MCP server?

Yes. APIs.io lists 1 MCP server for MSCI: Remote MCP server at mcp.msci.com over HTTP; 4 tools listed.

Is the MSCI API ready for AI agents?

MSCI has a Kin Score of 21.7 out of 100 (emerging) and an Agent Readiness score of 15.1 (agent-aware), scored by API Evangelist on 2026-11-06.

Work with this as data

Every provider here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for providers

9 MCP tools reach this

find_providersBrowse and filter every provider in the catalog.
get_provider_artifactsEvery artifact this provider publishes, grouped by type.
get_provider_operationsEvery operation across all of their OpenAPIs — one call instead of parsing every spec.
get_provider_toolsEvery MCP tool they ship, with the operation each wraps.
get_provider_evidenceHow each part of their score was established. Free — the basis for a claim should not sit behind it.
get_provider_ratingPRO — composite, band, trend and facet scores.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

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