UserGems

UserGems is a San Francisco-based sales intelligence platform that tracks champion job changes and surfaces buying signals so sales and marketing teams can prioritize outbound and ABM motions. The platform packages 30+ native signals (job changes, contact-level intent, M&A, hiring, web visits), Gem-E AI agents for prospect list building and email personalization, and custom AI scoring trained on 600+ closed-won patterns. UserGems exposes a public REST API at api.usergems.com/v1 that lets customers programmatically add and remove contacts to track for job changes, add and remove target accounts, and honor data-subject deletion requests. That API is deliberately write-only — there are no read or GET endpoints — authenticates with a single company-wide X-Api-Key header, is capped at 20 requests per second with one record per request, and acknowledges enqueueing rather than completion. UserGems also ships a hosted remote MCP server at app.usergems.com/mcp/usergems, in gated early access as of August 2026, that lets agents in Claude or ChatGPT search accounts and prospects, pull signal and score history, run research, draft Gem-E messages, and build and run campaigns including CRM writes, sequence enrollment and ad-audience sync — authorized with OAuth 2.0, dynamic client registration, PKCE S256 and a single mcp:use scope. Native integrations include Salesforce, HubSpot, Microsoft Dynamics, Outreach, Salesloft, Gong Engage, Marketo, LinkedIn Ads, Meta Ads, and Google Ads.

UserGems publishes 3 APIs on the APIs.io network: Accounts API, Contacts API, and Privacy API. Tagged areas include Sales Intelligence, Outbound, Account Based Marketing, Champion Tracking, and Job Changes.

The UserGems catalog on APIs.io includes 1 event-driven AsyncAPI specification, 1 JSON-LD context, and 2 Spectral governance rulesets.

UserGems’ developer surface includes authentication, API reference, getting-started guide, developer portal, documentation, signup flow, pricing, and 46 more developer resources.

🌐 Visit website 📡 Source on GitHub

67.4/100 exemplar ▬ flat Agent 55/100 agent ready saas Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

AccessSelf serve

1 APIs 1 MCP Servers 14 Features

Sales Intelligence Outbound Account Based MarketingChampion TrackingJob ChangesBuying SignalsAI ScoringSales Engagement CRM Revenue Operations Go-To-Market MCP AI Agents

Kin Score

Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0

Composite quality — 67.4/100 · exemplar

Contract Quality 18.0 / 23

Developer Ergonomics 10.8 / 18

Access Clarity 16.1 / 18

Operational Transparency 6.2 / 12

Contract Governance 3.4 / 11

Discoverability 6.8 / 9

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 55/100 · 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 8 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 6 / 6

Agent Skills 5 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 3 / 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

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.

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 github.com/api-evangelist/usergems: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 4

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

UserGems Accounts API

Add and remove accounts UserGems should source prospects against.

UserGems Contacts API

Add and remove contacts UserGems should track for job changes.

UserGems Privacy API

Honor data-subject deletion requests for tracked contacts.

UserGems MCP

Hosted remote MCP server that lets an agent in Claude, ChatGPT or any MCP-compatible client work against the customer's own UserGems workspace — searching accounts and prospects...

Postman Collections 3

Ready-to-run Postman collections for exercising this provider's APIs.

UserGems Accounts API

POSTMAN

UserGems Accounts Contacts API

POSTMAN

UserGems Accounts Privacy API

POSTMAN

Open Collections 5

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

API Collection

OPEN COLLECTION

UserGems Accounts API

OPEN COLLECTION

UserGems API

OPEN COLLECTION

UserGems Accounts Contacts API

OPEN COLLECTION

UserGems Accounts Privacy API

OPEN COLLECTION

MCP Servers 1

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

UserGems MCP

UserGems ships a hosted, remote MCP server — "UserGems MCP" — that lets an agent build and run GTM campaigns against the customer's own UserGems workspace and CRM from Claude or...

MCP SERVER

Pricing Plans 1

Published pricing tiers and plan structures.

Usergems Plans Pricing

1 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Usergems Rate Limits

5 limits

RATE LIMITS

FinOps 1

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

Usergems Finops

FINOPS

Features 14

Notable capabilities this provider offers.

Gem-E AI agents for prospect list building and email personalization

30+ native signals (job changes, contact-level intent, hiring, M&A, web visits)

Custom AI scoring trained on 600+ closed-won patterns

Intelligent workflows orchestrating ads, outreach, and CRM updates

Contact-level intent (specific buyers, not just account-level)

Outbound REST API for contact and account submission with up to 100 custom signal fields per contact

Privacy delete endpoint for GDPR/CCPA right-to-erasure

X-Api-Key header authentication

Asynchronous queue-based processing

Customer-configurable Salesforce API cap (default 20K calls per 24h per instance)

Native integrations with Salesforce, HubSpot, Dynamics, Outreach, Salesloft, Gong, Marketo, LinkedIn/Meta/Google Ads

Chrome extension for in-workflow access

SOC 2 Type 2, GDPR, and CCPA compliance posture

Money-back ROI guarantee — $100K spend tied to $100K pipeline

Scroll for all 14

Event Specifications 1

AsyncAPI definitions for this provider's event-driven and streaming APIs.

Usergems Webhooks

ASYNCAPI

Semantic Vocabularies 1

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

Usergems Context

0 classes · 3 properties

JSON-LD

Spectral Rules 2

Spectral governance rulesets for linting and validating these APIs.

UserGems API Rules

5 rules · 3 warnings 2 info

SPECTRAL

UserGems API Rules

6 rules · 4 errors 2 warnings

SPECTRAL

JSON Schema 2

Standalone JSON Schema definitions for this provider's data models.

UserGems Account

7 properties

JSON SCHEMA

UserGems Contact

9 properties

JSON SCHEMA

Examples 3

Example request and response payloads for these APIs.

Usergems Add Account Example

6 fields

EXAMPLE

Usergems Add Contact Example

8 fields

EXAMPLE

Usergems Privacy Delete Example

1 fields

EXAMPLE

Security Posture 4

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

Usergems Authentication

apiKey/oauth2 · 2 schemes

SECURITY

Usergems Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Usergems Vulnerability Disclosure

Hackerone · security.txt · contact published

SECURITY

Usergems Trust Center

SOC 2 Type II, GDPR, CCPA, EU AI Act (limited risk)

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Usergems Scopes

1 scope · authorizationCode

1 scopes

SCOPES

Agentic Access 1

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

Usergems Agentic Access

5 operations · 5 acting

AGENTIC

Integrations 12

Pre-built integrations with other platforms and tools.

Salesforce

HubSpot

Microsoft Dynamics

Outreach

Salesloft

Gong Engage

HubSpot Marketing

Marketo

LinkedIn Ads

Meta Ads

Google Ads

Chrome Extension

Scroll for all 12

Resources

Get Started 5

Portal, sign-up, and the first successful call

DeveloperPortal

GettingStarted

Portal

SignUp

Login

Documentation 8

Reference material describing how the API behaves

APIReference

Documentation

Documentation

Documentation

Documentation

Documentation

Documentation

Documentation

Scroll for all 8

Agent Surfaces 5

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

MCPServer

WellKnown

LLMsTxt

AgentSkill

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

Conventions

ErrorCatalog

Lifecycle

Conformance

DataModel

Webhooks

Build 4

SDKs, sample code, and the tooling you integrate with

PostmanWorkspace

PostmanWorkspace

ToolCrosswalk

ToolCrosswalk

Packages

Packages

GitHubOrganization

GitHubOrganization

Access & Security 8

Authentication, authorization, and security posture

TrustCenter

TrustCenter

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

Authentication

OAuthScopes

Compliance

Security

TrustCenter

Scroll for all 8

Learn 1

Tutorials, courses, talks, and written guidance

YouTube

YouTube

Operate 3

Status, limits, changes, and where to get help

Contact

Contact

Support

Support

RateLimits

RateLimits

Commercial 5

Pricing, plans, and the legal terms of use

Pricing

PrivacyPolicy

TermsOfService

Plans

FinOps

Company 5

The organization behind the API

Website

Website

Blog

Blog

Careers

Careers

LinkedIn

Twitter

Twitter

Other 3

Properties that don't map to a standard resource type

ContentSignal

ContentSignal

Product

Product

Customers

Customers

Source (apis.yml)

aid: usergems
url: https://raw.githubusercontent.com/api-evangelist/usergems/refs/heads/main/apis.yml
name: UserGems
description: UserGems is a San Francisco-based sales intelligence platform that tracks champion job changes and surfaces buying
  signals so sales and marketing teams can prioritize outbound and ABM motions. The platform packages 30+ native signals (job
  changes, contact-level intent, M&A, hiring, web visits), Gem-E AI agents for prospect list building and email personalization,
  and custom AI scoring trained on 600+ closed-won patterns. UserGems exposes a public REST API at api.usergems.com/v1 that
  lets customers programmatically add and remove contacts to track for job changes, add and remove target accounts, and honor
  data-subject deletion requests. That API is deliberately write-only — there are no read or GET endpoints — authenticates
  with a single company-wide X-Api-Key header, is capped at 20 requests per second with one record per request, and acknowledges
  enqueueing rather than completion. UserGems also ships a hosted remote MCP server at app.usergems.com/mcp/usergems, in gated
  early access as of August 2026, that lets agents in Claude or ChatGPT search accounts and prospects, pull signal and score
  history, run research, draft Gem-E messages, and build and run campaigns including CRM writes, sequence enrollment and ad-audience
  sync — authorized with OAuth 2.0, dynamic client registration, PKCE S256 and a single mcp:use scope. Native integrations
  include Salesforce, HubSpot, Microsoft Dynamics, Outreach, Salesloft, Gong Engage, Marketo, LinkedIn Ads, Meta Ads, and
  Google Ads.
tags:
- Sales Intelligence
- Outbound
- Account Based Marketing
- Champion Tracking
- Job Changes
- Buying Signals
- AI Scoring
- Sales Engagement
- CRM
- Revenue Operations
- Go-To-Market
- MCP
- AI Agents
tags_raw:
- Sales Intelligence
- Outbound
- ABM
- Champion Tracking
- Job Changes
- Buying Signals
- AI Scoring
- Sales Engagement
- CRM
- Revenue Operations
- GTM
- MCP
- AI Agents
kind: contract
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: unknown
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/usergems.png
access: 3rd-Party
position: Consuming
created: '2026-05-25'
modified: '2026-08-13'
specificationVersion: '0.23'
apis:
- aid: usergems:usergems-accounts-api
  name: UserGems Accounts API
  description: Add and remove accounts UserGems should source prospects against.
  humanURL: https://app.usergems.com/api/documentation
  baseURL: https://api.usergems.com/v1
  tags:
  - Account
  tags_raw:
  - Accounts
  properties:
  - type: OpenAPI
    url: openapi/usergems-accounts-api-openapi.yml
  - type: Overlay
    url: overlays/usergems-accounts-api-overlay.yaml
  - type: AgentSkill
    url: skills/usergems-manage-target-accounts.md
  - type: Documentation
    url: https://app.usergems.com/api/documentation
  - type: Documentation
    url: https://www.usergems.com/product/api
  - type: JSONSchema
    url: json-schema/usergems-contact-schema.json
  - type: JSONSchema
    url: json-schema/usergems-account-schema.json
  - type: JSONLD
    url: json-ld/usergems-context.jsonld
  - type: Examples
    url: examples/usergems-add-contact-example.json
  - type: Examples
    url: examples/usergems-add-account-example.json
  - type: Examples
    url: examples/usergems-privacy-delete-example.json
  - type: SpectralRules
    url: rules/usergems-rules.yml
- aid: usergems:usergems-contacts-api
  name: UserGems Contacts API
  description: Add and remove contacts UserGems should track for job changes.
  humanURL: https://app.usergems.com/api/documentation
  baseURL: https://api.usergems.com/v1
  tags:
  - Contacts
  properties:
  - type: OpenAPI
    url: openapi/usergems-contacts-api-openapi.yml
  - type: Overlay
    url: overlays/usergems-contacts-api-overlay.yaml
  - type: AgentSkill
    url: skills/usergems-track-champion-contacts.md
  - type: Documentation
    url: https://app.usergems.com/api/documentation
  - type: Documentation
    url: https://www.usergems.com/product/api
  - type: JSONSchema
    url: json-schema/usergems-contact-schema.json
  - type: JSONSchema
    url: json-schema/usergems-account-schema.json
  - type: JSONLD
    url: json-ld/usergems-context.jsonld
  - type: Examples
    url: examples/usergems-add-contact-example.json
  - type: Examples
    url: examples/usergems-add-account-example.json
  - type: Examples
    url: examples/usergems-privacy-delete-example.json
  - type: SpectralRules
    url: rules/usergems-rules.yml
- aid: usergems:usergems-privacy-api
  name: UserGems Privacy API
  description: Honor data-subject deletion requests for tracked contacts.
  humanURL: https://app.usergems.com/api/documentation
  baseURL: https://api.usergems.com/v1
  tags:
  - Privacy
  properties:
  - type: OpenAPI
    url: openapi/usergems-privacy-api-openapi.yml
  - type: Overlay
    url: overlays/usergems-privacy-api-overlay.yaml
  - type: AgentSkill
    url: skills/usergems-honor-erasure-request.md
  - type: Documentation
    url: https://app.usergems.com/api/documentation
  - type: Documentation
    url: https://www.usergems.com/product/api
  - type: JSONSchema
    url: json-schema/usergems-contact-schema.json
  - type: JSONSchema
    url: json-schema/usergems-account-schema.json
  - type: JSONLD
    url: json-ld/usergems-context.jsonld
  - type: Examples
    url: examples/usergems-add-contact-example.json
  - type: Examples
    url: examples/usergems-add-account-example.json
  - type: Examples
    url: examples/usergems-privacy-delete-example.json
  - type: SpectralRules
    url: rules/usergems-rules.yml
- aid: usergems:usergems-mcp
  name: UserGems MCP
  description: Hosted remote MCP server that lets an agent in Claude, ChatGPT or any MCP-compatible client work against the
    customer's own UserGems workspace — searching accounts and prospects, pulling signal and score history, running account
    research, drafting Gem-E messages, and building, editing and running campaigns including CRM writes, sequence enrollment
    and ad-audience sync. OAuth 2.0 with dynamic client registration, PKCE S256 and a single mcp:use scope delegating the
    signed-in user's own UserGems permissions. In gated early access as of August 2026.
  humanURL: https://www.usergems.com/product/mcp
  baseURL: https://app.usergems.com/mcp/usergems
  tags:
  - MCP
  - Agents
  - Go-To-Market
  tags_raw:
  - MCP
  - Agents
  - GTM
  properties:
  - type: MCPServer
    url: mcp/usergems-mcp.yml
  - type: ToolCrosswalk
    url: mcp/usergems-tool-crosswalk.yml
  - type: Documentation
    url: https://help.usergems.com/article/mcp-early-access-claude
  - type: Documentation
    url: https://help.usergems.com/article/mcp-early-access-chatgpt
  - type: GettingStarted
    url: https://help.usergems.com/article/mcp-early-access-claude
  - type: OAuthScopes
    url: scopes/usergems-scopes.yml
common:
- type: PostmanWorkspace
  url: https://www.postman.com/kinlaneapi/usergems/overview
- type: AgenticAccess
  url: agentic-access/usergems-agentic-access.yml
- type: TrustCenter
  url: security/usergems-trust-center.yml
- type: VulnerabilityDisclosure
  url: security/usergems-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/usergems-domain-security.yml
- type: Authentication
  url: authentication/usergems-authentication.yml
- type: MCPServer
  url: mcp/usergems-mcp.yml
- type: ToolCrosswalk
  url: mcp/usergems-tool-crosswalk.yml
- type: OAuthScopes
  url: scopes/usergems-scopes.yml
- type: WellKnown
  url: well-known/usergems-well-known.yml
- type: ContentSignal
  url: well-known/usergems-robots.txt
- type: LLMsTxt
  url: llms/usergems-llms.txt
- type: Packages
  url: packages/usergems-packages.yml
- type: Conventions
  url: conventions/usergems-conventions.yml
- type: ErrorCatalog
  url: errors/usergems-problem-types.yml
- type: Lifecycle
  url: lifecycle/usergems-lifecycle.yml
- type: Conformance
  url: conformance/usergems-conformance.yml
- type: Compliance
  url: https://www.usergems.com/data-security
- type: Security
  url: https://www.usergems.com/legal-security/security
- type: DataModel
  url: data-model/usergems-data-model.yml
- type: Webhooks
  url: asyncapi/usergems-webhooks.yml
- type: AgentSkill
  url: skills/_index.yml
- type: Website
  url: https://www.usergems.com
- type: DeveloperPortal
  url: https://app.usergems.com/api/documentation
- type: APIReference
  url: https://app.usergems.com/api/documentation
- type: GettingStarted
  url: https://help.usergems.com/article/using-the-usergems-api
- type: Portal
  url: https://www.usergems.com/product/overview
- type: Documentation
  url: https://app.usergems.com/api/documentation
- type: Documentation
  url: https://help.usergems.com/article/using-the-usergems-api
- type: Documentation
  url: https://help.usergems.com
- type: Documentation
  url: https://help.usergems.com/article/usergems-implementation-guide-salesforce-crm
- type: Documentation
  url: https://help.usergems.com/article/usergems-implementation-guide-hubspot-crm
- type: Documentation
  url: https://help.usergems.com/article/how-many-salesforce-api-calls-does-usergems-use
- type: Documentation
  url: https://help.usergems.com/article/usergems-outreach-configuration
- type: Product
  url: https://www.usergems.com/product/api
- type: SignUp
  url: https://www.usergems.com/contact
- type: Login
  url: https://app.usergems.com/login
- type: Pricing
  url: https://www.usergems.com/pricing
- type: Blog
  url: https://www.usergems.com/blog
- type: Customers
  url: https://www.usergems.com/customers
- type: Careers
  url: https://www.usergems.com/careers
- type: Contact
  url: https://www.usergems.com/contact
- type: Support
  url: mailto:support@usergems.com
- type: PrivacyPolicy
  url: https://www.usergems.com/legal-security/privacy-policy
- type: TermsOfService
  url: https://www.usergems.com/legal-security/terms
- type: TrustCenter
  url: https://trust.usergems.com
- type: LinkedIn
  url: https://www.linkedin.com/company/usergems
- type: Twitter
  url: https://x.com/usergems
- type: YouTube
  url: https://www.youtube.com/@UserGems
- type: GitHubOrganization
  url: https://github.com/usergems
- type: Plans
  url: plans/usergems-plans-pricing.yml
- type: RateLimits
  url: rate-limits/usergems-rate-limits.yml
- type: FinOps
  url: finops/usergems-finops.yml
- type: Integrations
  data:
  - name: Salesforce
    category: CRM
  - name: HubSpot
    category: CRM
  - name: Microsoft Dynamics
    category: CRM
  - name: Outreach
    category: Sales Engagement
  - name: Salesloft
    category: Sales Engagement
  - name: Gong Engage
    category: Sales Engagement
  - name: HubSpot Marketing
    category: Marketing Automation
  - name: Marketo
    category: Marketing Automation
  - name: LinkedIn Ads
    category: Advertising
  - name: Meta Ads
    category: Advertising
  - name: Google Ads
    category: Advertising
  - name: Chrome Extension
    category: Productivity
- type: Features
  data:
  - Gem-E AI agents for prospect list building and email personalization
  - 30+ native signals (job changes, contact-level intent, hiring, M&A, web visits)
  - Custom AI scoring trained on 600+ closed-won patterns
  - Intelligent workflows orchestrating ads, outreach, and CRM updates
  - Contact-level intent (specific buyers, not just account-level)
  - Outbound REST API for contact and account submission with up to 100 custom signal fields per contact
  - Privacy delete endpoint for GDPR/CCPA right-to-erasure
  - X-Api-Key header authentication
  - Asynchronous queue-based processing
  - Customer-configurable Salesforce API cap (default 20K calls per 24h per instance)
  - Native integrations with Salesforce, HubSpot, Dynamics, Outreach, Salesloft, Gong, Marketo, LinkedIn/Meta/Google Ads
  - Chrome extension for in-workflow access
  - SOC 2 Type 2, GDPR, and CCPA compliance posture
  - Money-back ROI guarantee — $100K spend tied to $100K pipeline
  sources:
  - https://www.usergems.com
  - https://www.usergems.com/product/api
  - https://app.usergems.com/api/documentation
  - https://help.usergems.com/article/how-many-salesforce-api-calls-does-usergems-use
  updated: '2026-05-25'
x-enrichment:
  date: '2026-08-13'
  status: enriched
  artifacts_added: 23
  pass: local-v1
maintainers:
- FN: Kin Lane
  email: info@apievangelist.com
  X: apievangelist
  url: https://apievangelist.com

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