G2
G2 is the world's largest B2B software marketplace, built on more than three million verified peer reviews and used by over 100 million software buyers a year. The G2 API provides programmatic access to G2's product catalog, category taxonomy, vendor records, reviews, badges, Grid reports, buyer intent signals and competitive intelligence. The v2 REST surface is a JSON:API contract of 62 operations served from data.g2.com, alongside a separate Data Solutions API for enriched flat-structure review data and a first-party remote MCP server at mcp.g2.com that exposes 21 tools to AI agents over OAuth 2.0. Authentication is by Developer Portal account token or OAuth 2.0 authorization code with PKCE, and most data surfaces are gated by subscription entitlement.
G2 publishes 29 APIs on the APIs.io network, including Buyer Intent API, Categories API, Chat Gpt Plugin API, and 26 more. Tagged areas include B2B, Software Discovery, Software Reviews, Buyer Intent, and Market Intelligence.
The G2 catalog on APIs.io includes 1 event-driven AsyncAPI specification.
G2’s developer surface includes authentication, documentation, developer portal, signup flow, pricing, legal docs, support, and 40 more developer resources.
What this lets a business do 1
Business capabilities this provider's published APIs can perform, derived from its own contracts. Browse all capabilities →
Kin Score
APIs 29
Individual APIs this provider publishes, each with its own machine-readable definition.
G2 MCP Server
G2's first-party remote Model Context Protocol server. It exposes 21 tools covering buyer intent signals, competitive intelligence, the product and category catalog, vendor reco...
G2 Buyer Intent API
The Buyer Intent API from G2 — 3 operation(s) for buyer intent.
G2 Categories API
The Categories API from G2 — 2 operation(s) for categories.
G2 Chat Gpt Plugin API
The Chat Gpt Plugin API from G2 — 2 operation(s) for chat gpt plugin.
G2 Competitors API
The Competitors API from G2 — 1 operation(s) for competitors.
G2 Credit Account API
The Credit Account API from G2 — 2 operation(s) for credit account.
G2 Data Solutions Reviews API
The Data Solutions Reviews API from G2 — 1 operation(s) for data solutions reviews.
G2 Data Subscriptions API
The Data Subscriptions API from G2 — 2 operation(s) for data subscriptions.
G2 Discussions API
The Discussions API from G2 — 1 operation(s) for discussions.
G2 Downloads API
The Downloads API from G2 — 1 operation(s) for downloads.
G2 G2 Activate API
The G2 Activate API from G2 — 4 operation(s) for g2 activate.
G2 Integration Reviews API
The Integration Reviews API from G2 — 1 operation(s) for integration reviews.
G2 Market Signals API
The Market Signals API from G2 — 1 operation(s) for market signals.
G2 Medals API
The Medals API from G2 — 1 operation(s) for medals.
G2 Performance Analytics API
The Performance Analytics API from G2 — 5 operation(s) for performance analytics.
G2 Product Features API
The Product Features API from G2 — 4 operation(s) for product features.
G2 Product Mappings API
The Product Mappings API from G2 — 2 operation(s) for product mappings.
G2 Product Ratings API
The Product Ratings API from G2 — 1 operation(s) for product ratings.
G2 Product Videos API
The Product Videos API from G2 — 1 operation(s) for product videos.
G2 Products API
The Products API from G2 — 3 operation(s) for products.
G2 Questions API
The Questions API from G2 — 2 operation(s) for questions.
G2 Reports API
The Reports API from G2 — 1 operation(s) for reports.
G2 Research Boards API
The Research Boards API from G2 — 6 operation(s) for research boards.
G2 Reviews API
The Reviews API from G2 — 2 operation(s) for reviews.
G2 Screenshots API
The Screenshots API from G2 — 3 operation(s) for screenshots.
G2 Snippets API
The Snippets API from G2 — 1 operation(s) for snippets.
G2 Users API
The Users API from G2 — 1 operation(s) for users.
G2 Vendors API
The Vendors API from G2 — 2 operation(s) for vendors.
G2 Video Reviews API
The Video Reviews API from G2 — 1 operation(s) for video reviews.
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MCP Servers 1
Model Context Protocol servers that expose these APIs to AI agents.
G2 MCP Server
G2's first-party remote MCP server. Exposes G2 buyer intent data, competitive intelligence, the product/category catalog and review analytics to MCP clients over OAuth 2.0. Read...
MCP SERVERPricing Plans 1
Published pricing tiers and plan structures.
G2 Plans Pricing
PLANSRate Limits 1
Documented rate limits and quota policies.
G2 Rate Limits
RATE LIMITSFinOps 1
Cost, billing, and metering signals for API financial operations.
G2 Finops
FINOPSFeatures 5
Notable capabilities this provider offers.
Product Data Access
Retrieve detailed product listings including descriptions, ratings, and competitive positioning.
Review Syndication
Syndicate authenticated user reviews to your own platforms and partner sites.
Category Taxonomy
Access G2's comprehensive software category taxonomy for classification and discovery.
Competitive Intelligence
Compare products side-by-side using G2's crowd-sourced review data.
Buyer Intent Data
Access buyer intent signals showing which companies are researching products in your category.
Event Specifications 1
AsyncAPI definitions for this provider's event-driven and streaming APIs.
G2 Webhooks
ASYNCAPISecurity Posture 4
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Scopes 1
OAuth scopes governing access to this provider's APIs.
Use Cases 4
What developers build with this provider.
Review Aggregation
Pull and display G2 reviews on your own website or product pages.
Market Research
Analyze software categories and competitive landscapes using G2's product data.
Sales Intelligence
Leverage buyer intent data to identify prospects actively researching solutions.
Product Comparison
Build comparison tools using G2's product ratings and review data.
Integrations 5
Pre-built integrations with other platforms and tools.
Salesforce
Sync G2 buyer intent data and reviews directly into Salesforce CRM.
HubSpot
Integrate G2 data with HubSpot for marketing and sales workflows.
Slack
Receive notifications about new reviews and buyer intent signals in Slack.
Leverage G2 data for LinkedIn advertising and account targeting.
Marketo
Push G2 buyer intent signals into Marketo for demand generation campaigns.
Resources
Get Started 6
Portal, sign-up, and the first successful call
Documentation 3
Reference material describing how the API behaves
Agent Surfaces 4
MCP servers, agent skills, and machine-readable catalogs
Design & Contract 8
Pagination, idempotency, versioning, errors, and events
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Build 3
SDKs, sample code, and the tooling you integrate with
Access & Security 6
Authentication, authorization, and security posture
Operate 4
Status, limits, changes, and where to get help
Commercial 5
Pricing, plans, and the legal terms of use
Company 4
The organization behind the API
Other 4
Properties that don't map to a standard resource type
Source (apis.yml)
Work with this as data
Every provider here is available over the APIs.io API and to AI agents over MCP.