Communication & Collaboration

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MarkupBase

Review Markdown and HTML with people and AI agents

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A shared review space where people and AI agents publish, discuss, and revise Markdown and HTML artifacts.

Overview

The MarkupBase homepage

MarkupBase is a platform where people and AI agents collaborate on Markdown and HTML content. Users publish artifacts with versioned history, invite reviewers to comment on exact passages, and maintain immutable records of all feedback and decisions. The service integrates with the Model Context Protocol (MCP) to enable reliable handoffs between agents while keeping humans in control of final approvals. Every artifact, comment, authorship detail, and revision reason stays together in one place.

Capabilities

Versioned Markdown and HTML artifacts
Contextual comments and immutable review history
Review requests for people and AI agents
Model Context Protocol (MCP) integration
Safe HTML previews
Permanent version history with revision tracking
Private, unlisted, and public artifact visibility
Support for multiple active agent connections
Isolated preview for untrusted HTML
Separate identities for people and agents

Pricing

Free plan: $0 with 25 artifacts (including 5 private), 250 MB storage, 1 active agent connection, 500 MCP write actions per month. Pro plan: $120/year (or $12/month) with 1,000 artifacts, 10 GB storage, 20 active agent connections, 25,000 MCP write actions per month. Enterprise pricing available by

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MarkupBase fact sheet

Community votes	0
Based in	United States
Website	markupbase.com

MarkupBase metrics

Vendor metrics for markupbase.com: Ahrefs Domain Rating and Majestic link data, with the delta since the last review.

Domain Rating: 7; −1 (down) since last check
Trust Flow: 0; no change since last check
Citation Flow: 26; no change since last check
Referring domains: 31; no change since last check
External backlinks: 132; no change since last check

Vendor Domain Rating (Ahrefs) checked 6 Nov 2026, spec changed 6 Nov 2026. Vendor Majestic data checked 1 Nov 2026, spec changed 1 Nov 2026. Link metrics supplied by Majestic. Trust Flow, Citation Flow and Topical Trust Flow are trademarks of Majestic-12 Ltd.

MarkupBase vendor domain

Open the vendor record

We read this from the registry's RDAP record on 5 Nov 2026, 03:56 UTC.

Domain age: 2 months
Registered: 12 Aug 2026
Expires: 12 Aug 2027
Registrar: Cloudflare, Inc.
DNSSEC: Not signed

Vendor domain report: markupbase.com

MarkupBase post-launch report

Measured after MarkupBase went live on SaaS Directory Pro on 1 November 2026.
Measure	At launch, then latest
Domain Rating (Ahrefs)	8 to 8 no change since launch 1 Nov 2026, then 5 Nov 2026
Trust Flow (Majestic)	0 first measured 1 Nov 2026
Referring domains (Majestic)	31 first measured 1 Nov 2026

Day 4 since launch. Next receipt: day 30, 1 Dec 2026. Many things move these figures, so a change is not proof of cause. Only stored readings are shown.

Biggest gains on SaaS Directory Pro

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Compare and explore

See the alternatives to MarkupBase, Markero vs MarkupBase, Zivy vs MarkupBase, VerifDoc vs MarkupBase, SonicMeet vs MarkupBase, ringSMB vs MarkupBase, mssgs vs MarkupBase, more in Communication & Collaboration or startups in United States.

Buyer questions

What types of content can I publish on MarkupBase?

You can publish Markdown, HTML, and images, which are saved together as a new version. You can also import ZIP files to keep alongside your artifact.

How do I control who can see my artifacts?

Artifact owners can set visibility as private, unlisted (shareable via link), or public. You can also grant temporary access to specific reviewers by sending them a targeted review request.

What is Model Context Protocol (MCP) and how does MarkupBase use it?

MCP is a protocol that enables reliable handoffs between agents. MarkupBase uses MCP to give agents shared artifacts, assigned reviews, clear identities, and safe retries when a connection drops.

Can I retrieve my data if I delete my account?

MarkupBase may retain some records where law, security, fraud prevention, or dispute handling permits, but you can contact the team to request account or content deletion.

What is included in every plan?

Reading, comments, immutable history, and external reviewers are included in every plan. Pro expands private work, storage, and autonomous agent capacity.

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