mxHero

mxHERO Inc. is the pioneer of email-to-cloud content management, based in San Francisco and a long-time Box partner. Its Mail2Cloud platform is a bridge that intelligently captures email and attachments (in-flight or at-rest) over SMTP/S and IMAP/S and routes them, bi-directionally, into cloud content platforms such as Box, Egnyte, Microsoft OneDrive, Google Drive, and Dropbox — without retaining the content itself. Mail2Cloud Advanced adds an AI email-knowledge layer: captured email is deduplicated, metadata-preserved, and stored in an isolated per-tenant vector database that an official Model Context Protocol (MCP) server exposes to AI agents for secure email search and knowledge recovery, with a V3 REST API for dataset and S/MIME management.

mxHero is listed with 1 API on the APIs.io network. Tagged areas include Company, Email, Cloud Storage, Content Management, and Email to Cloud.

mxHero’s developer surface includes documentation, engineering blog, pricing, authentication, and 12 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

21.5/100 emerging ▬ flat Agent 28/100 agent aware Heartbeat 79/100 alive saas Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessPaid

1 API 1 MCP Servers 1 Agent Skills

Company Email Cloud Storage Content ManagementEmail to CloudArtificial Intelligence MCPEmail SearchCompliance Collaboration

Kin Score

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

Composite quality — 21.5/100 · emerging

Contract Quality 0.0 / 21

Developer Ergonomics 5.0 / 17

Access Clarity 7.2 / 17

Operational Transparency 0.3 / 11

Contract Governance 0.0 / 10

Discoverability 6.4 / 9

Regulatory Posture 1.6 / 15

Agent readiness — 28/100 · agent aware

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 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 0 / 7

Typed Event Surface 0 / 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 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 could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

Show this score on your site.

It updates itself when the score changes. Paste this where you link to your API docs:

<a href="https://apis.io/providers/mxhero/"><img src="https://apis.io/badge/mxhero/card.svg" alt="mxHero on APIs.io — Kin Score by API Evangelist"></a>

Other styles, a README pill and a shields.io endpoint are on the badge page.

Raise your score.

Agent readiness — checks not met, largest first (exact, from this profile):

Machine-Readable Contract +18 pts — api_specs includes an OpenAPI document
Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author
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
Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented)

7 more unmet checks in the Agent Readiness table above.

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

Contract Quality scores 0.0 — up to +25.0 composite points
Developer Ergonomics scores 29.2 — up to +14.2 composite points
Operational Transparency scores 2.6 — up to +12.7 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/mxhero/apis.yml: open an issue on github.com/api-evangelist/mxhero 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 →

Standards implemented 3

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)

APIs 1

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

mxHERO Mail2Cloud Advanced (AI Email Knowledge)

AI email knowledge-recovery service. Captured company email is optimized and stored in an isolated per-tenant vector database, then exposed to AI agents through an official MCP ...

MCP Servers 1

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

mxHero MCP Server

Official mxHERO Mail2Cloud Advanced MCP server. Provides AI agents with secure, multi-account email search and knowledge recovery over a company's captured email data, stored in...

MCP SERVER

Agent Skills 1

Packaged agent skills for driving this provider's APIs from an AI assistant.

Search company email knowledge with mxHERO

AGENT SKILL

mxHero API pricing

Prices published by mxHero, read 2026-10-07 from www2.mxhero.com/products-pricing.html.

Plan	Price
mxHero Platform - SMB	$18/ user/ month
mxHero Platform - Corporate	$12/ user/ month
mxHero Platform - Enterprise	$6/ user/ month
mxHero Intelligence add-on - SMB	$22.50/ user/ month
mxHero Intelligence add-on - Corporate	$15/user/month
mxHero Intelligence add-on - Enterprise	$7.50/ user/ month
mxHero Archive add-on - SMB	$7.50/ user/ month
mxHero Archive add-on - Corporate	$5/ user/ month

All 12 plans, limits and sources →

Pricing Plans 1

Published pricing tiers and plan structures.

Mxhero Plans Pricing

12 plans

PLANS

Security Posture 2

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

Mxhero Authentication

token/apiKey · 2 schemes

SECURITY

Mxhero Domain Security

TLSv1.3 · DMARC

SECURITY

Resources

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

MCPServer

MCPServer

AgentSkill

AgentSkill

LLMsTxt

LLMsTxt

Build 2

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Packages

Packages

Access & Security 2

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

HelpCenter

HelpCenter

Commercial 4

Pricing, plans, and the legal terms of use

Plans

Pricing

TermsOfService

PrivacyPolicy

Company 2

The organization behind the API

Website

Website

Blog

Blog

Other 1

Properties that don't map to a standard resource type

Products

Products

Source (apis.yml)

aid: mxhero
name: mxHero
description: 'mxHERO Inc. is the pioneer of email-to-cloud content management, based in San Francisco and a long-time Box
  partner. Its Mail2Cloud platform is a bridge that intelligently captures email and attachments (in-flight or at-rest) over
  SMTP/S and IMAP/S and routes them, bi-directionally, into cloud content platforms such as Box, Egnyte, Microsoft OneDrive,
  Google Drive, and Dropbox — without retaining the content itself. Mail2Cloud Advanced adds an AI email-knowledge layer:
  captured email is deduplicated, metadata-preserved, and stored in an isolated per-tenant vector database that an official
  Model Context Protocol (MCP) server exposes to AI agents for secure email search and knowledge recovery, with a V3 REST
  API for dataset and S/MIME management.'
url: https://raw.githubusercontent.com/api-evangelist/mxhero/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- 500-global
x-tier: stub
x-tier-reason: portfolio-lead
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: false
  label: Hosted service · you call their endpoint
  confidence: medium
  source:
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: paid
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Paid
  confidence: medium
  source:
  - plans
  - authentication
  - security
  generated: '2026-11-06'
  method: derived
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-20'
image: https://mxhero.com/wp-content/uploads/2021/03/mxhero-logo.png
tags:
- Company
- Email
- Cloud Storage
- Content Management
- Email to Cloud
- Artificial Intelligence
- MCP
- Email Search
- Compliance
- Collaboration
apis:
- name: mxHERO Mail2Cloud Advanced (AI Email Knowledge)
  description: AI email knowledge-recovery service. Captured company email is optimized and stored in an isolated per-tenant
    vector database, then exposed to AI agents through an official MCP server (email_search tool) over stdio and streamable
    HTTP, secured with mxHERO Vector Search access tokens.
  humanURL: https://www.mxhero.com/advanced-ai
  baseURL: https://lab4-mcp.mxhero.com
  tags:
  - Email
  - Artificial Intelligence
  - MCP
  - Search
  tags_raw:
  - Email
  - AI
  - MCP
  - Search
  properties:
  - type: MCPServer
    url: mcp/mxhero-mcp.yml
  - type: Documentation
    url: https://mxhero.helpjuice.com/en_US/mxhero-ai
  - type: Authentication
    url: authentication/mxhero-authentication.yml
  - type: AgentSkill
    url: skills/mxhero-email-knowledge-search.md
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Plans
  url: plans/mxhero-plans-pricing.yml
- type: Website
  url: https://mxhero.com
- type: Products
  url: https://www.mxhero.com/products
- type: Documentation
  url: https://mxhero.helpjuice.com/en_US/mxhero-ai
- type: HelpCenter
  url: https://support.mxhero.com/hc/en-us
- type: Blog
  url: https://web-new.mxhero.com/blog/
- type: Pricing
  url: https://www2.mxhero.com/products-pricing.html
- type: TermsOfService
  url: https://www.mxhero.com/tos
- type: PrivacyPolicy
  url: https://www.mxhero.com/privacy
- type: GitHubOrganization
  url: https://github.com/mxaiorg
- type: MCPServer
  url: mcp/mxhero-mcp.yml
- type: Packages
  url: packages/mxhero-packages.yml
- type: Authentication
  url: authentication/mxhero-authentication.yml
- type: AgentSkill
  url: skills/_index.yml
- type: LLMsTxt
  url: llms/mxhero-llms.txt
- type: DomainSecurity
  url: security/mxhero-domain-security.yml
x-enrichment:
  date: '2026-07-20'
  status: enriched
  artifacts_added: 7
  pass: local-v1

mxHero API — frequently asked questions

Does mxHero have an API?

Yes. APIs.io lists 1 API from mxHero, including mxHERO Mail2Cloud Advanced (AI Email Knowledge).

How do I authenticate with the mxHero API?

mxHero documents its authentication (token/apiKey · 2 schemes). The details are profiled on APIs.io as Mxhero Authentication.

How much does the mxHero API cost?

mxHero publishes its prices; its mxHero Platform - SMB plan is $18/ user/ month as of 2026-10-07. APIs.io lists 12 pricing plans for mxHero, with each plan's price, limits and inclusions under Pricing on this page.

Does mxHero have an MCP server?

Yes. APIs.io lists 1 MCP server for mxHero: Official mxHERO Mail2Cloud Advanced MCP server. Provides AI agents with secure, multi-account email search and knowledge recovery over a company's captured email data, stored in an isolated per-tenant

Is the mxHero API ready for AI agents?

mxHero has a Kin Score of 21.5 out of 100 (emerging) and an Agent Readiness score of 28.2 (agent-aware), 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.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for providers

9 MCP tools reach this

find_providersBrowse and filter every provider in the catalog.
get_provider_artifactsEvery artifact this provider publishes, grouped by type.
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.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

All 92 tools →

Call it yourself

curl for this page

This provider

curl "https://apis.io/api/v1/providers/mxhero"

All providers

curl "https://apis.io/api/v1/providers?limit=25"

Every operation they expose

curl "https://apis.io/api/v1/providers/mxhero/operations?limit=25"

How their score was established

curl "https://apis.io/api/v1/providers/mxhero/evidence"

Calls without X-API-Key need no key. Calls with it need a paid plan — get a key.

Get an API key

Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.