Messari

Messari provides crypto research, analytics, fundamentals, intelligence, and asset profiles through a REST API at data.messari.io. Endpoints cover assets metrics, market data, news, Token Unlocks, screener, governance, treasuries, and AI-powered Messari Copilot. Authentication is via the x-messari-api-key header.

Messari publishes 12 API contracts indexed on the APIs.io network, including AI API, Assets API, Datasets API, and 9 more. Tagged areas include Web3, Cryptocurrency, Research, Analytics, and Asset Data.

The Messari catalog on APIs.io includes 1 Spectral governance ruleset.

Messari’s developer surface includes authentication, developer portal, documentation, pricing, GitHub presence, and 7 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

27.4/100 thin ▬ flat Agent 44/100 agent ready Heartbeat 21/100 dormant saas Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessFreemiumSelf serve⚡ Free to try

1 published contract 1 MCP Servers

Web3 Cryptocurrency Research Analytics Asset Data Fundamentals News Token Unlocks

Kin Score

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

Composite quality — 27.4/100 · thin

Contract Quality 7.9 / 19

Developer Ergonomics 3.9 / 15

Access Clarity 2.0 / 15

Operational Transparency 1.3 / 10

Contract Governance 1.2 / 9

Discoverability 5.1 / 8

Regulatory Posture 1.8 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 44/100 · agent ready

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 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 7 / 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 5 / 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 applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

The six quality facets above are damped to 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% 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)
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
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link
Typed Event Surface +6 pts — AsyncAPI document, OR webhooks/callbacks objects in the as-published OpenAPI, OR common[].type includes Webhooks
Documented Reversibility +6 pts — a reversal operation in the contract, graded up when a window is documented too

5 more unmet checks in the Agent Readiness table above.

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

Access Clarity scores 13.2 — up to +17.4 composite points
Developer Ergonomics scores 26.2 — up to +14.8 composite points
Contract Quality scores 42.2 — 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/messari/apis.yml: open an issue on github.com/api-evangelist/messari 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
x402 Micropayments & Agentic Pay-per-Call	standard	40.9 (thin)	-	-

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 4

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 (verified)

OAuth 2.0 Protected Resource Metadata

measured — observed by APIs.io (verified)

Dynamic Client Registration

measured — observed by APIs.io (published)

OpenAPI

measured — observed by APIs.io (published)

APIs 12

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

Messari REST API

Comprehensive REST API exposing /v1, /v2 endpoints for asset metrics (price, market cap, ROI, mining stats, supply, developer activity, ROI), markets, news, Token Unlocks, scree...

Messari AI API

The AI API from Messari — 4 operation(s) for ai.

Messari Assets API

The Assets API from Messari — 7 operation(s) for assets.

Messari Datasets API

The Datasets API from Messari — 2 operation(s) for datasets.

Messari Exchanges API

The Exchanges API from Messari — 2 operation(s) for exchanges.

Messari Markets API

The Markets API from Messari — 4 operation(s) for markets.

Messari Monitoring API

The Monitoring API from Messari — 3 operation(s) for monitoring.

Messari Networks API

The Networks API from Messari — 3 operation(s) for networks.

Messari News API

The News API from Messari — 5 operation(s) for news.

Messari Protocols API

The Protocols API from Messari — 5 operation(s) for protocols.

Messari Research API

The Research API from Messari — 3 operation(s) for research.

Messari Token Unlocks API

The Token Unlocks API from Messari — 2 operation(s) for token unlocks.

Scroll for all 12

Open Collections 12

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

Messari AI API

OPEN COLLECTION

Messari AI Assets API

OPEN COLLECTION

Messari AI Datasets API

OPEN COLLECTION

Messari AI Exchanges API

OPEN COLLECTION

Messari AI Markets API

OPEN COLLECTION

Messari AI Monitoring API

OPEN COLLECTION

Messari AI Networks API

OPEN COLLECTION

Messari AI News API

OPEN COLLECTION

Messari AI Protocols API

OPEN COLLECTION

Messari AI Research API

OPEN COLLECTION

Messari AI Token Unlocks API

OPEN COLLECTION

Messari API

OPEN COLLECTION

Scroll for all 12

MCP Servers 1

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

Messari MCP Server

Remote MCP server at mcp.messari.io over HTTP.

MCP SERVER

Messari API pricing

Not yet checked against Messari's own pricing page. Compiled by API Evangelist on 2026-05-08 from messari.io/pricing; confirm before you rely on a figure. A free plan or tier is listed.

Plan	Price
Free freemium	Free
Pro subscription	—
Enterprise enterprise	—

Plan details, limits and sources →

Rate limits

Free per minute: 20 requests per minute
Free per day: 1000 requests per day
Pro: 60 requests per minute

Compiled by API Evangelist, not yet checked against Messari's documentation. All 4 limits →

Pricing Plans 1

Published pricing tiers and plan structures.

Messari Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Messari Rate Limits

4 limits

RATE LIMITS

Service Levels 1

Uptime the provider promises or reports, as SLA4OAI. Read from its own pages; APIs.io runs no monitors.

Messari

SLA

FinOps 1

Cost, billing, and metering signals for API financial operations.

Messari Finops

FINOPS

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Messari API Rules

50 rules · 46 errors 3 warnings 1 info

SPECTRAL

Security Posture 2

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

Messari Authentication

apiKey · 1 scheme

SECURITY

Messari Domain Security

TLSv1.3 · DMARC

SECURITY

Agentic Access 1

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

Messari Agentic Access

42 operations · 5 acting · 1 human-in-the-loop

42 operations · 5 acting

AGENTIC

Resources

Get Started 1

Portal, sign-up, and the first successful call

Portal

Portal

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

Build 1

SDKs, sample code, and the tooling you integrate with

GitHub

GitHub

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 1

Status, limits, changes, and where to get help

RateLimits

RateLimits

Commercial 3

Pricing, plans, and the legal terms of use

Pricing

Pricing

Plans

Plans

FinOps

FinOps

Company 2

The organization behind the API

Website

Website

LinkedIn

Source (apis.yml)

aid: messari
url: https://raw.githubusercontent.com/api-evangelist/messari/refs/heads/main/apis.yml
name: Messari
kind: company
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: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  gated: none
  gated_source:
  - onboarding
  label: Freemium · Self-serve signup
  confidence: medium
  source:
  - plans
  - authentication
  - security
  generated: '2026-11-06'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/messari.png
tags:
- Web3
- Cryptocurrency
- Research
- Analytics
- Asset Data
- Fundamentals
- News
- Token Unlocks
tags_raw:
- Web3
- Crypto
- Research
- Analytics
- Asset Data
- Fundamentals
- News
- Token Unlocks
created: '2026-05-08'
modified: '2026-09-16'
specificationVersion: '0.23'
description: Messari provides crypto research, analytics, fundamentals, intelligence, and asset profiles through a REST API
  at data.messari.io. Endpoints cover assets metrics, market data, news, Token Unlocks, screener, governance, treasuries,
  and AI-powered Messari Copilot. Authentication is via the x-messari-api-key header.
apis:
- aid: messari:rest-api
  name: Messari REST API
  tags:
  - Cryptocurrency
  - Asset Data
  - Market Data
  - News
  - Fundamentals
  - Token Unlocks
  tags_raw:
  - Crypto
  - Asset Data
  - Market Data
  - News
  - Fundamentals
  - Token Unlocks
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  baseURL: https://data.messari.io/api
  humanURL: https://messari.io/api/docs
  description: Comprehensive REST API exposing /v1, /v2 endpoints for asset metrics (price, market cap, ROI, mining stats,
    supply, developer activity, ROI), markets, news, Token Unlocks, screener, and curated intel. Higher-tier plans unlock
    proprietary research datasets.
  properties:
  - type: Documentation
    url: https://messari.io/api/docs
  - type: Pricing
    url: https://messari.io/pricing
  x-features:
  - Asset metrics across 1,500+ assets
  - News and intel feed
  - Token Unlocks dataset
  - Treasuries and governance
  - Messari Copilot AI agent (higher tiers)
  x-use-cases:
  - Power crypto research dashboards
  - Token-unlock alerting and risk
  - Curated news ingestion
- aid: messari:messari-ai-api
  name: Messari AI API
  description: The AI API from Messari — 4 operation(s) for ai.
  humanURL: https://messari.io/api/docs
  baseURL: https://data.messari.io/api
  tags:
  - Artificial Intelligence
  tags_raw:
  - AI
  properties:
  - type: OpenAPI
    url: openapi/messari-ai-api-openapi.yml
- aid: messari:messari-assets-api
  name: Messari Assets API
  description: The Assets API from Messari — 7 operation(s) for assets.
  humanURL: https://messari.io/api/docs
  baseURL: https://data.messari.io/api
  tags:
  - Assets
  properties:
  - type: OpenAPI
    url: openapi/messari-assets-api-openapi.yml
- aid: messari:messari-datasets-api
  name: Messari Datasets API
  description: The Datasets API from Messari — 2 operation(s) for datasets.
  humanURL: https://messari.io/api/docs
  baseURL: https://data.messari.io/api
  tags:
  - Datasets
  properties:
  - type: OpenAPI
    url: openapi/messari-datasets-api-openapi.yml
- aid: messari:messari-exchanges-api
  name: Messari Exchanges API
  description: The Exchanges API from Messari — 2 operation(s) for exchanges.
  humanURL: https://messari.io/api/docs
  baseURL: https://data.messari.io/api
  tags:
  - Exchange
  tags_raw:
  - Exchanges
  properties:
  - type: OpenAPI
    url: openapi/messari-exchanges-api-openapi.yml
- aid: messari:messari-markets-api
  name: Messari Markets API
  description: The Markets API from Messari — 4 operation(s) for markets.
  humanURL: https://messari.io/api/docs
  baseURL: https://data.messari.io/api
  tags:
  - Markets
  properties:
  - type: OpenAPI
    url: openapi/messari-markets-api-openapi.yml
- aid: messari:messari-monitoring-api
  name: Messari Monitoring API
  description: The Monitoring API from Messari — 3 operation(s) for monitoring.
  humanURL: https://messari.io/api/docs
  baseURL: https://data.messari.io/api
  tags:
  - Monitoring
  properties:
  - type: OpenAPI
    url: openapi/messari-monitoring-api-openapi.yml
- aid: messari:messari-networks-api
  name: Messari Networks API
  description: The Networks API from Messari — 3 operation(s) for networks.
  humanURL: https://messari.io/api/docs
  baseURL: https://data.messari.io/api
  tags:
  - Networks
  properties:
  - type: OpenAPI
    url: openapi/messari-networks-api-openapi.yml
- aid: messari:messari-news-api
  name: Messari News API
  description: The News API from Messari — 5 operation(s) for news.
  humanURL: https://messari.io/api/docs
  baseURL: https://data.messari.io/api
  tags:
  - News
  properties:
  - type: OpenAPI
    url: openapi/messari-news-api-openapi.yml
- aid: messari:messari-protocols-api
  name: Messari Protocols API
  description: The Protocols API from Messari — 5 operation(s) for protocols.
  humanURL: https://messari.io/api/docs
  baseURL: https://data.messari.io/api
  tags:
  - Protocol
  tags_raw:
  - Protocols
  properties:
  - type: OpenAPI
    url: openapi/messari-protocols-api-openapi.yml
- aid: messari:messari-research-api
  name: Messari Research API
  description: The Research API from Messari — 3 operation(s) for research.
  humanURL: https://messari.io/api/docs
  baseURL: https://data.messari.io/api
  tags:
  - Research
  properties:
  - type: OpenAPI
    url: openapi/messari-research-api-openapi.yml
- aid: messari:messari-token-unlocks-api
  name: Messari Token Unlocks API
  description: The Token Unlocks API from Messari — 2 operation(s) for token unlocks.
  humanURL: https://messari.io/api/docs
  baseURL: https://data.messari.io/api
  tags:
  - Token Unlocks
  properties:
  - type: OpenAPI
    url: openapi/messari-token-unlocks-api-openapi.yml
common:
- type: Website
  url: https://messari.io
- type: AgenticAccess
  url: agentic-access/messari-agentic-access.yml
- type: DomainSecurity
  url: security/messari-domain-security.yml
- type: Authentication
  url: authentication/messari-authentication.yml
- type: LinkedIn
  url: https://www.linkedin.com/company/messari
- type: Portal
  url: https://messari.io/
- type: Documentation
  url: https://messari.io/api/docs
- type: Pricing
  url: https://messari.io/pricing
- type: GitHub
  url: https://github.com/messari
- type: Plans
  url: plans/messari-plans-pricing.yml
- type: RateLimits
  url: rate-limits/messari-rate-limits.yml
- type: FinOps
  url: finops/messari-finops.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

Messari API — frequently asked questions

Does Messari have an API?

Yes. APIs.io lists 12 APIs from Messari, including Messari REST API, Messari AI API and Messari Assets API, and 9 more.

Is there an OpenAPI specification for the Messari API?

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

How do I authenticate with the Messari API?

Messari documents its authentication (apiKey · 1 scheme). The details are profiled on APIs.io as Messari Authentication.

How much does the Messari API cost?

APIs.io lists 3 pricing plans for Messari, with each plan's price, limits and inclusions under Pricing on this page.

Does Messari have an MCP server?

Yes. APIs.io lists 1 MCP server for Messari: Remote MCP server at mcp.messari.io over HTTP.

Is the Messari API ready for AI agents?

Messari has a Kin Score of 27.4 out of 100 (thin) and an Agent Readiness score of 43.9 (agent-ready), 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.

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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.
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