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Content publishing

16 content publishing listings with a free or open edition: 15 with a named customization surface, 16 with an interface an agent can drive.

Adaptable means the source is public and there is a named surface to change. Operable means an agent can drive it through an interface; the reach list on each page says which jobs. One entry in the directory, describing one piece of software in one form factor. The unit of the directory.

AdaptableOperable
TryGhost/Ghost
Ghost
Open-source publishing platform with newsletters and memberships, driven through the official Admin API.
Yours
Light edit13 to edit
Agent
Official API, partial reach
Type
Business app · Web app
Stack
JavaScriptTypeScript
MIT55,112 starsactive Sep 3, 2026
AdaptableOperable
nowork-studio/notfair-plugin
NotFair Plugin
45 open SEO, GEO, content, and ads skills for coding agents, plus a hosted MCP for live ad and analytics accounts.
Yours
Config only14 to edit
Agent
Native MCP server, partial reach
Type
Skill · Skill
Stack
MarkdownPythonTypeScript
MIT3,449 starsactive Aug 29, 2026
AdaptableOperable
payloadcms/payload
Payload CMS
Next.js-native headless CMS with an official MCP plugin that exposes every collection to an agent.
Yours
Light edit9 to edit
Agent
Official MCP server, partial reach
Type
Business app · Web app
Stack
TypeScript
MIT44,549 starsactive Sep 3, 2026
AdaptableOperable
seo-skills/seo-audit-skill
SEOmator SEO Audit
332-rule SEO audit as a CLI, desktop app, and Claude Code skill, tuned by a seomator.toml.
Yours
Config only4 to edit
Agent
Native CLI, partial reach
Type
Product · CLI
Stack
TypeScript
MIT413 starsactive Sep 2, 2026
AdaptableOperable
strapi/strapi
Strapi
Open-core headless CMS: content types in the admin, auto-generated REST and GraphQL APIs, env-file config.
Yours
Light edit24 to edit
Agent
Official API, partial reach
Type
Business app · Web app
Stack
TypeScriptJavaScript
MIT core with EE license under ee/ (GitHub NOASSERTION)73,062 starsactive Sep 2, 2026
AdaptableOperable
umbraco/Umbraco-CMS
Umbraco CMS
.NET CMS configured in appsettings.json, with an official MCP server over its Management API.
Yours
Config only11 to edit
Agent
Official MCP server, partial reach
Type
Business app · Web app
Stack
C#TypeScript
MIT5,239 starsactive Sep 3, 2026
AdaptableOperable
directus/directus
Directus
Backend and Studio over any SQL database with a built-in MCP server; source-available, free under revenue caps.
Yours
Config only18 to edit
Agent
Official MCP server, partial reach
Type
Business app · Web app
Stack
TypeScript
MSCL-1.0 (source-available; GitHub NOASSERTION)37,684 starsactive Sep 2, 2026
AdaptableOperable
pentacent/keila
Keila
Self-hosted newsletter tool with campaigns, forms, and segments behind an official JSON API.
Yours
Config only8 to edit
Agent
Official API, partial reach
Type
Business app · Web app
Stack
ElixirJavaScript
AGPL-3.02,203 starsactive Sep 2, 2026
AdaptableOperable
mautic/mautic
Mautic
Self-hosted marketing automation: contacts, segments, campaigns, and email, with an official REST API.
Yours
Config only6 to edit
Agent
Official API, partial reach
Type
Business app · Web app
Stack
PHPJavaScript
GPL-3.010,434 starsactive Sep 3, 2026
AdaptableOperable
gitroomhq/postiz-app
Postiz
Self-hosted social scheduler for 30+ networks with a public API, an in-repo MCP server, and an agent CLI.
Yours
Config only23 to edit
Agent
Official API, partial reach
Type
Business app · Web app
Stack
TypeScript
AGPL-3.035,402 starsactive Sep 2, 2026
AdaptableOperable
trypostit/trypost
TryPost
Open-source social scheduler for 12 networks with a first-class MCP server and REST API.
Yours
Config only30 to edit
Agent
Official MCP server, partial reach
Type
Business app · Web app
Stack
PHPTypeScript
AGPL-3.0579 starsactive Sep 1, 2026
AdaptableOperable
writefreely/writefreely
WriteFreely
Minimalist federated blogging server in one Go binary, driven by the official Write.as API and wf CLI.
Yours
Config only3 to edit
Agent
Official API, partial reach
Type
Business app · Web app
Stack
GoJavaScript
AGPL-3.05,240 starsactive Sep 1, 2026
AdaptableOperable
brightbeanxyz/brightbean-studio
BrightBean Studio
Free, no-tier social media manager for agencies, with an in-repo MCP app, API, and agent skill.
Yours
Config only30 to edit
Agent
Official MCP server, partial reach
Type
Business app · Web app
Stack
PythonJavaScript
AGPL-3.02,253 starsactive Aug 13, 2026
AdaptableOperable
inovector/mixpost
Mixpost
MIT Laravel social scheduler; the free Lite edition has no API, so agents can only reach the paid tiers.
Yours
Config only9 to edit
Agent
Wrapped MCP server, none reach
Type
Business app · Web app
Stack
PHPJavaScript
MIT3,654 starsactive Mar 16, 2026
AdaptableOperable
sanity-io/sanity
Sanity
Hosted structured-content backend with an open-source Studio and an official remote MCP server.
Yours
Light edit5 to edit
Agent
Official MCP server, partial reach
Type
Product · Web app
Stack
TypeScript
MIT6,309 starsactive Sep 3, 2026
Operable
wp-cli/wp-cli
WP-CLI
The official WordPress command line: posts, media, users, plugins, and themes on any install, no browser.
Agent
Official CLI, partial reach
Type
Product · CLI
Stack
PHP
MIT5,145 starsactive Sep 1, 2026

Machine-readable: index/vertical/content-publishing.json