emailmd

emailmd provides a platform that turns Markdown into responsive, email‑safe HTML, offering a library of templates, a visual builder, and an API for developers to generate and preview emails across clients. The service emphasizes ease of use, customization, and AI‑assisted drafting, catering to marketers and developers alike.

emailmd is listed with 2 APIs on the APIs.io network. Tagged areas include Email, Markdown, Templates, and Builder.

The emailmd catalog on APIs.io includes 1 Spectral governance ruleset.

emailmd’s developer surface includes CLI, documentation, API reference, getting-started guide, and 10 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

16.5/100 emerging Agent 16/100 agent aware Full breakdown ↓
scored 2026-11-13 · rubric v0.28.0 · Show this score on your site →

2 APIs

Email Markdown Templates Builder

Kin Score

Kin Score How this is scored →
scored 2026-11-13 · rubric v0.28.0

Composite quality — 16.5/100 · emerging

Contract Quality 2.0 / 21

Developer Ergonomics 7.3 / 17

Access Clarity 0.0 / 17

Operational Transparency 0.0 / 11

Contract Governance 2.2 / 10

Discoverability 3.8 / 9

Regulatory Posture 0.7 / 15

Agent readiness — 16/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 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 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

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/.

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

Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author Ask about this →
Machine-Readable Auth +10 pts — a served openid-configuration/oauth-authorization-server carrying `issuer` (served), else the securitySchemes class in the provider OpenAPIs — bound (mutualTLS, DPoP, Signature) > negotiable (oauth2 authorizationCode/clientCredentials, openIdConnect) > bearer (http bearer, apiKey) Ask about this →
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) Ask about this →
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes Ask about this →
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0 Ask about this →
Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented) Ask about this →

11 more unmet checks in the Agent Readiness table above.

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

Contract Quality scores 9.4 — up to +22.7 composite points Ask about this →
Access Clarity scores 0.0 — up to +20.0 composite points Ask about this →
Operational Transparency scores 0.0 — up to +13.0 composite points Ask about this →

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.

Not sure how this applies to your stack? Ask about any one item. Kin Lane reads every question, looks at your profile and your situation, and replies with what a fix would take — scoped to that one area, priced up front, yours whether you ship it or not. Ask a question →

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/emailmd-dev/apis.yml: open an issue on github.com/api-evangelist/emailmd-dev 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 1

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 (documented)

APIs 2

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

EmailMD API

API for generating and previewing email markdown content.

emailmd API

emailmd API as documented publicly: 1 operations. Contract generated from the documentation by API Evangelist (2026-11-06); not the provider's own document.

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs. Counts are the severity each rule declares, not results of running them.

emailmd API Rules

20 rules · 18 error-severity 1 warn-severity 1 info-severity

SPECTRAL

Security Posture 1

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

emailmd Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Get Started 1

Portal, sign-up, and the first successful call

GettingStarted

GettingStarted

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

Design & Contract 3

Pagination, idempotency, versioning, errors, and events

Spectral

Spectral

Vocabulary

Vocabulary

Conformance

Conformance

Build 3

SDKs, sample code, and the tooling you integrate with

CLI

CLI

SDKs

SDKs

Packages

Packages

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Company 1

The organization behind the API

Website

Website

Other 2

Properties that don't map to a standard resource type

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: emailmd-dev
name: emailmd
description: emailmd provides a platform that turns Markdown into responsive, email‑safe HTML, offering a library of templates,
  a visual builder, and an API for developers to generate and preview emails across clients. The service emphasizes ease of
  use, customization, and AI‑assisted drafting, catering to marketers and developers alike.
url: https://artifacts.apis.io/emailmd-dev/apis.yml
x-type: company
x-source: harvest:mcp-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-11-06 (modular-v1; was harvest)
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  probe_state: unreadable
  source:
  - security
  generated: '2026-11-13'
  method: derived
specificationVersion: '0.20'
created: '2026-11-06'
modified: '2026-11-06'
tags:
- Email
- Markdown
- Templates
- Builder
tags_raw:
- Email
- Markdown
- Templates
- Builder
- API
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Spectral
  url: rules/emailmd-dev-rules.yml
- type: Vocabulary
  url: vocabulary/emailmd-dev-vocabulary.yml
- type: CLI
  url: cli/emailmd-dev-cli.yml
- type: Conformance
  url: conformance/emailmd-dev-conformance.yml
- type: LLMsTxt
  url: llms/emailmd-dev-llms.txt
- type: Hosts
  url: hosts/emailmd-dev-hosts.yml
- type: Vendors
  url: vendors/emailmd-dev-vendors.yml
- type: SDKs
  url: packages/emailmd-dev-packages.yml
- type: Packages
  url: packages/emailmd-dev-packages.yml
- type: Documentation
  url: https://www.emailmd.dev/docs
- type: APIReference
  url: https://www.emailmd.dev/docs/api-reference
- type: GettingStarted
  url: https://www.emailmd.dev/docs/getting-started
- type: DomainSecurity
  url: security/emailmd-dev-domain-security.yml
- type: Website
  url: https://emailmd.dev/
apis:
- name: EmailMD API
  description: API for generating and previewing email markdown content.
  humanURL: https://www.emailmd.dev/docs/api-reference
  baseURL: null
  aid: emailmd-dev:emailmd-api
- aid: emailmd-dev:emailmd-dev-api
  name: emailmd API
  description: 'emailmd API as documented publicly: 1 operations. Contract generated from the documentation by API Evangelist
    (2026-11-06); not

    the provider''s own document.'
  humanURL: https://www.emailmd.dev/docs/cli
  properties:
  - type: OpenAPI
    url: openapi/_ae-authored/emailmd-dev-openapi-generated.yml
    x-provenance: generated
x-coverage:
  state: unreadable
  reason: no-machine-readable-spec
  detail: No OpenAPI, AsyncAPI, GraphQL, gRPC, or WSDL contract found despite accessible documentation.
  evidence:
  - url: https://www.emailmd.dev/openapi.json
    status: 404
  checked: '2026-11-06'
x-enrichment:
  date: '2026-11-06'
  status: enriched
  artifacts_added: 16
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

emailmd API — frequently asked questions

Does emailmd have an API?

Yes. APIs.io lists 2 APIs from emailmd, including EmailMD API and emailmd API.

Is there an OpenAPI specification for the emailmd API?

Yes. APIs.io indexes 1 OpenAPI specification for emailmd, each linked for download from this page.

Is the emailmd API ready for AI agents?

emailmd has a Kin Score of 16.5 out of 100 (emerging) and an Agent Readiness score of 16.1 (agent-aware), scored by API Evangelist on 2026-11-13.

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