Mixmax

Mixmax is an AI-native sales engagement and execution platform that lives inside Gmail and Outlook, helping sales, customer success, recruiting, and other relationship-driven teams run their entire customer journey without context-switching. It combines email tracking and templates, multi-channel sequences, one-click scheduling, CRM automation, engagement signals, and Meeting Copilot summaries and transcripts. Mixmax exposes a public REST API (api.mixmax.com/v1) for lightweight real-time access to contacts, contact groups, sequences and recipients, file requests, meeting summaries and transcripts, and snippet tags, authenticated with an API token, plus message integrations and Sidebar/Widget SDKs for extending the product surface. Since April 2026 Mixmax also runs a first-party remote MCP server at mcp.mixmax.com/mcp — read-only, OAuth 2.0 with PKCE against its own OpenID Connect provider, scoped meetings:read — together with six installable Claude Skills, a rule-driven incoming and outgoing webhook surface with a documented event catalog, and published per-tier pricing.

Mixmax publishes 6 APIs on the APIs.io network, including Contact Groups API, Contacts API, File Requests API, and 3 more. Tagged areas include Company, Software-as-a-Service, MCP, Agents, and Webhook.

The Mixmax catalog on APIs.io includes 1 event-driven AsyncAPI specification.

Mixmax’s developer surface includes documentation, API reference, getting-started guide, support, engineering blog, pricing, signup flow, and 22 more developer resources.

🌐 Visit website 📡 Source on GitHub

52.1/100 developing ▬ flat Agent 33/100 agent ready saas Full breakdown ↓
scored 2026-09-06 · rubric v0.19.0

AccessSelf serve

1 APIs 1 MCP Servers

Company Software-as-a-Service MCP Agents Webhook Authentication Sales Engagement Email Sales CRM Productivity Meetings Sequences

Kin Score

Kin Score How this is scored →
scored 2026-09-06 · rubric v0.19.0

Composite quality — 52.1/100 · developing

Contract Quality 6.3 / 25

Developer Ergonomics 10.5 / 20

Access Clarity 18.4 / 20

Operational Transparency 7.2 / 13

Contract Governance 2.2 / 12

Discoverability 7.6 / 10

Agent readiness — 33/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 6 / 6

Agent Skills 5 / 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 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

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/mixmax: 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 6

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

MCP Servers 1

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

Rate Limits 1

Documented rate limits and quota policies.

Scopes 1

OAuth scopes governing access to this provider's APIs.

Mixmax Scopes

OAuth 2.0 · no documented scopes

0 scopes

SCOPES

Get Started 4

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

SignUp

SignUp

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

MCPServer

MCPServer

AgenticAccess

AgenticAccess

AgentSkill

AgentSkill

Design & Contract 2

Pagination, idempotency, versioning, errors, and events

Webhooks

Webhooks

ErrorCatalog

ErrorCatalog

Build 4

SDKs, sample code, and the tooling you integrate with

Packages

Packages

SDKs

SDKs

GitHubOrganization

GitHubOrganization

ToolCrosswalk

ToolCrosswalk

Access & Security 4

Authentication, authorization, and security posture

TrustCenter

Compliance

DomainSecurity

OAuthScopes

Operate 3

Status, limits, changes, and where to get help

StatusPage

StatusPage

Support

Support

ChangeLog

ChangeLog

Commercial 4

Pricing, plans, and the legal terms of use

Pricing

TermsOfService

PrivacyPolicy

Plans

Company 2

The organization behind the API

Blog

Blog

Website

Website

Other 1

Properties that don't map to a standard resource type

Overlay

Overlay

Source (apis.yml)

aid: mixmax
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: medium
  source:
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/mixmax.png
name: Mixmax
description: Mixmax is an AI-native sales engagement and execution platform that lives inside Gmail and Outlook, helping sales,
  customer success, recruiting, and other relationship-driven teams run their entire customer journey without context-switching.
  It combines email tracking and templates, multi-channel sequences, one-click scheduling, CRM automation, engagement signals,
  and Meeting Copilot summaries and transcripts. Mixmax exposes a public REST API (api.mixmax.com/v1) for lightweight real-time
  access to contacts, contact groups, sequences and recipients, file requests, meeting summaries and transcripts, and snippet
  tags, authenticated with an API token, plus message integrations and Sidebar/Widget SDKs for extending the product surface.
  Since April 2026 Mixmax also runs a first-party remote MCP server at mcp.mixmax.com/mcp — read-only, OAuth 2.0 with PKCE
  against its own OpenID Connect provider, scoped meetings:read — together with six installable Claude Skills, a rule-driven
  incoming and outgoing webhook surface with a documented event catalog, and published per-tier pricing.
url: https://raw.githubusercontent.com/api-evangelist/mixmax/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- creandum
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-08-13'
tags:
- Company
- Software-as-a-Service
- MCP
- Agents
- Webhook
- Authentication
- Sales Engagement
- Email
- Sales
- CRM
- Productivity
- Meetings
- Sequences
tags_raw:
- Company
- Saas
- MCP
- Agents
- Webhooks
- OAuth
- Sales Engagement
- Email
- Sales
- CRM
- Productivity
- Meetings
- Sequences
apis:
- aid: mixmax:mixmax-contact-groups-api
  name: Mixmax Contact Groups API
  description: Contact groups you own or that are shared with you — deprecated
  humanURL: https://developer.mixmax.com/
  baseURL: https://api.mixmax.com/v1
  tags:
  - Contact Groups
  properties:
  - type: OpenAPI
    url: openapi/mixmax-contact-groups-api-openapi.yml
  - type: Authentication
    url: authentication/mixmax-authentication.yml
  - type: Conventions
    url: conventions/mixmax-conventions.yml
  - type: RateLimits
    url: rate-limits/mixmax-rate-limits.yml
  - type: Lifecycle
    url: lifecycle/mixmax-lifecycle.yml
  - type: DataModel
    url: data-model/mixmax-data-model.yml
  - type: Conformance
    url: conformance/mixmax-conformance.yml
  - type: LLMsTxt
    url: llms/mixmax-llms.txt
  - type: WellKnown
    url: well-known/mixmax-well-known.yml
- aid: mixmax:mixmax-contacts-api
  name: Mixmax Contacts API
  description: Mixmax Contacts (people you've emailed) — deprecated resource group
  humanURL: https://developer.mixmax.com/
  baseURL: https://api.mixmax.com/v1
  tags:
  - Contacts
  properties:
  - type: OpenAPI
    url: openapi/mixmax-contacts-api-openapi.yml
  - type: Authentication
    url: authentication/mixmax-authentication.yml
  - type: Conventions
    url: conventions/mixmax-conventions.yml
  - type: RateLimits
    url: rate-limits/mixmax-rate-limits.yml
  - type: Lifecycle
    url: lifecycle/mixmax-lifecycle.yml
  - type: DataModel
    url: data-model/mixmax-data-model.yml
  - type: Conformance
    url: conformance/mixmax-conformance.yml
  - type: LLMsTxt
    url: llms/mixmax-llms.txt
  - type: WellKnown
    url: well-known/mixmax-well-known.yml
- aid: mixmax:mixmax-file-requests-api
  name: Mixmax File Requests API
  description: File requests you've sent out
  humanURL: https://developer.mixmax.com/
  baseURL: https://api.mixmax.com/v1
  tags:
  - File Requests
  properties:
  - type: OpenAPI
    url: openapi/mixmax-file-requests-api-openapi.yml
  - type: Authentication
    url: authentication/mixmax-authentication.yml
  - type: Conventions
    url: conventions/mixmax-conventions.yml
  - type: RateLimits
    url: rate-limits/mixmax-rate-limits.yml
  - type: Lifecycle
    url: lifecycle/mixmax-lifecycle.yml
  - type: DataModel
    url: data-model/mixmax-data-model.yml
  - type: Conformance
    url: conformance/mixmax-conformance.yml
  - type: LLMsTxt
    url: llms/mixmax-llms.txt
  - type: WellKnown
    url: well-known/mixmax-well-known.yml
- aid: mixmax:mixmax-meetings-api
  name: Mixmax Meetings API
  description: Meeting Copilot summaries and transcripts (requires mixmaxApi feature)
  humanURL: https://developer.mixmax.com/
  baseURL: https://api.mixmax.com/v1
  tags:
  - Meetings
  properties:
  - type: OpenAPI
    url: openapi/mixmax-meetings-api-openapi.yml
  - type: Authentication
    url: authentication/mixmax-authentication.yml
  - type: Conventions
    url: conventions/mixmax-conventions.yml
  - type: RateLimits
    url: rate-limits/mixmax-rate-limits.yml
  - type: Lifecycle
    url: lifecycle/mixmax-lifecycle.yml
  - type: DataModel
    url: data-model/mixmax-data-model.yml
  - type: Conformance
    url: conformance/mixmax-conformance.yml
  - type: LLMsTxt
    url: llms/mixmax-llms.txt
  - type: WellKnown
    url: well-known/mixmax-well-known.yml
- aid: mixmax:mixmax-sequences-api
  name: Mixmax Sequences API
  description: Sequences you have access to, and their recipients
  humanURL: https://developer.mixmax.com/
  baseURL: https://api.mixmax.com/v1
  tags:
  - Sequences
  properties:
  - type: OpenAPI
    url: openapi/mixmax-sequences-api-openapi.yml
  - type: Authentication
    url: authentication/mixmax-authentication.yml
  - type: Conventions
    url: conventions/mixmax-conventions.yml
  - type: RateLimits
    url: rate-limits/mixmax-rate-limits.yml
  - type: Lifecycle
    url: lifecycle/mixmax-lifecycle.yml
  - type: DataModel
    url: data-model/mixmax-data-model.yml
  - type: Conformance
    url: conformance/mixmax-conformance.yml
  - type: LLMsTxt
    url: llms/mixmax-llms.txt
  - type: WellKnown
    url: well-known/mixmax-well-known.yml
- aid: mixmax:mixmax-snippet-tags-api
  name: Mixmax Snippet Tags API
  description: Snippet tag management
  humanURL: https://developer.mixmax.com/
  baseURL: https://api.mixmax.com/v1
  tags:
  - Snippet Tags
  properties:
  - type: OpenAPI
    url: openapi/mixmax-snippet-tags-api-openapi.yml
  - type: Authentication
    url: authentication/mixmax-authentication.yml
  - type: Conventions
    url: conventions/mixmax-conventions.yml
  - type: RateLimits
    url: rate-limits/mixmax-rate-limits.yml
  - type: Lifecycle
    url: lifecycle/mixmax-lifecycle.yml
  - type: DataModel
    url: data-model/mixmax-data-model.yml
  - type: Conformance
    url: conformance/mixmax-conformance.yml
  - type: LLMsTxt
    url: llms/mixmax-llms.txt
  - type: WellKnown
    url: well-known/mixmax-well-known.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: MCPServer
  url: mcp/mixmax-mcp.yml
- type: Overlay
  url: overlays/mixmax-openapi-overlay.yaml
- type: AgenticAccess
  url: agentic-access/mixmax-agentic-access.yml
- type: TrustCenter
  url: security/mixmax-trust-center.yml
- type: Compliance
  url: https://www.mixmax.com/security
- type: DomainSecurity
  url: security/mixmax-domain-security.yml
- type: Packages
  url: packages/mixmax-packages.yml
- type: SDKs
  url: packages/mixmax-packages.yml
- type: AgentSkill
  url: skills/_index.yml
- type: StatusPage
  url: https://status.mixmax.com/
- type: DeveloperPortal
  url: https://developer.mixmax.com/
- type: Documentation
  url: https://developer.mixmax.com/docs/getting-started
- type: APIReference
  url: https://developer.mixmax.com/reference/getting-started-with-the-api
- type: GettingStarted
  url: https://developer.mixmax.com/reference/getting-started-with-the-api
- type: GitHubOrganization
  url: https://github.com/mixmaxhq
- type: Support
  url: https://success.mixmax.com/
- type: Blog
  url: https://www.mixmax.com/blog
- type: Pricing
  url: https://www.mixmax.com/pricing
- type: SignUp
  url: https://app.mixmax.com/signup
- type: Login
  url: https://app.mixmax.com/dashboard
- type: TermsOfService
  url: https://www.mixmax.com/legal/terms-of-service
- type: PrivacyPolicy
  url: https://www.mixmax.com/legal/privacy-policy
- type: Website
  url: https://www.mixmax.com/
- type: ToolCrosswalk
  url: mcp/mixmax-tool-crosswalk.yml
- type: OAuthScopes
  url: scopes/mixmax-scopes.yml
- type: Webhooks
  url: asyncapi/mixmax-webhooks.yml
- type: Plans
  url: plans/mixmax-plans-pricing.yml
- type: ChangeLog
  url: changelog/mixmax-changelog.yml
- type: ErrorCatalog
  url: errors/mixmax-problem-types.yml
x-enrichment:
  date: '2026-08-13'
  status: enriched
  artifacts_added: 18
  pass: local-v1

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