Shortwave

Shortwave is an AI-native email client that upgrades an existing Gmail or Google Workspace account with a reimagined inbox, built by former members of Google's Inbox team and backed by Lightspeed Venture Partners. Its AI assistant drafts and triages email, its AI-powered search answers natural-language questions across your mailbox, and it connects to external tools as a Model Context Protocol (MCP) client — Shortwave consumes MCP tool calls rather than publishing a public developer REST API. Data is hosted on Google Cloud with AES-256 encryption at rest and TLS 1.2+ in transit, and the product undergoes annual CASA Tier 2 security audits, with SOC 2 Type II and GDPR compliance available on request.

Shortwave is profiled on the APIs.io network. Tagged areas include Company, Email, Email Client, Artificial Intelligence, and AI Assistant.

Shortwave’s developer surface includes documentation, engineering blog, pricing, signup flow, support, and 13 more developer resources.

🌐 Visit website 📡 Source on GitHub

25.7/100 emerging ▬ flat Agent 7/100 human only Full breakdown ↓
scored 2026-07-27 · rubric v0.5

0 APIs

CompanyEmailEmail ClientArtificial IntelligenceAI AssistantProductivityModel Context ProtocolGmailGoogle WorkspaceCollaboration

Kin Score

Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5

Composite quality — 25.7/100 · emerging

Contract Quality 0.0 / 25

Developer Ergonomics 4.8 / 20

Commercial Clarity 12.1 / 20

Operational Transparency 2.1 / 13

Governance 0.0 / 12

Discoverability 6.8 / 10

Agent readiness — 7/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 15

MCP Server 0 / 12

Machine-Readable Auth 0 / 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 4 / 4

Consent & Bot Identity 3 / 3

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/shortwave: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

Get Started 2

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

SignUp

SignUp

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

WellKnown

WellKnown

Design & Contract 1

Pagination, idempotency, versioning, errors, and events

Conformance

Conformance

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 6

Authentication, authorization, and security posture

TrustCenter

TrustCenter

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

Security

SecurityTxt

Compliance

Operate 1

Status, limits, changes, and where to get help

Support

Support

Commercial 3

Pricing, plans, and the legal terms of use

Pricing

Pricing

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 2

The organization behind the API

Website

Website

Blog

Blog

Source (apis.yml)

aid: shortwave
name: Shortwave
description: Shortwave is an AI-native email client that upgrades an existing Gmail or Google Workspace account with a reimagined
  inbox, built by former members of Google's Inbox team and backed by Lightspeed Venture Partners. Its AI assistant drafts
  and triages email, its AI-powered search answers natural-language questions across your mailbox, and it connects to external
  tools as a Model Context Protocol (MCP) client — Shortwave consumes MCP tool calls rather than publishing a public developer
  REST API. Data is hosted on Google Cloud with AES-256 encryption at rest and TLS 1.2+ in transit, and the product undergoes
  annual CASA Tier 2 security audits, with SOC 2 Type II and GDPR compliance available on request.
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
image: https://www.shortwave.com/og-image.png
url: https://raw.githubusercontent.com/api-evangelist/shortwave/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- lightspeed-venture-partners
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-21'
tags:
- Company
- Email
- Email Client
- Artificial Intelligence
- AI Assistant
- Productivity
- Model Context Protocol
- Gmail
- Google Workspace
- Collaboration
apis: []
common:
- type: TrustCenter
  url: security/shortwave-trust-center.yml
- type: VulnerabilityDisclosure
  url: security/shortwave-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/shortwave-domain-security.yml
- type: Security
  url: https://www.shortwave.com/.well-known/security.txt
- type: SecurityTxt
  url: well-known/shortwave-security.txt
- type: WellKnown
  url: well-known/shortwave-well-known.yml
- type: Conformance
  url: conformance/shortwave-conformance.yml
- type: Website
  url: https://www.shortwave.com
- type: DeveloperPortal
  url: https://www.shortwave.com/docs/
- type: Documentation
  url: https://www.shortwave.com/docs/
- type: Blog
  url: https://www.shortwave.com/blog/
- type: Pricing
  url: https://www.shortwave.com/pricing/
- type: SignUp
  url: https://app.shortwave.com/
- type: TermsOfService
  url: https://www.shortwave.com/policies/terms-of-service/
- type: PrivacyPolicy
  url: https://www.shortwave.com/policies/privacy-policy/
- type: GitHubOrganization
  url: https://github.com/shortwave
- type: Support
  url: mailto:support@shortwave.com
- type: Compliance
  url: https://www.shortwave.com/docs/guides/security/
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
x-enrichment:
  date: '2026-07-21'
  status: enriched
  artifacts_added: 6
  pass: local-v1