---
id: "dodopayments-dualmark"
title: "dualmark"
creator: "Dodo Payments"
creator_url: "https://github.com/dodopayments"
url: "https://github.com/dodopayments/dualmark"
category: "ai-search-visibility-seo-geo-aeo"
subcategory: "llms-txt-and-agent-readable-sites"
region: "West"
access: "free"
date_added: "2026-10-19"
resource_kind: "entity"
verification_basis: "supplier-inventory-v2.4"
access_evidence: "Supplier-approved free inventory; not independently verified by this site."
domain_top: "AI search visibility (SEO/GEO/AEO)"
domain_sub: "llms.txt and agent-readable sites"
source_type: "repo"
last_verified: "2026-10-19"
last_content_modified: "2026-10-19"
---

[Home](/index.md) · [AI search visibility (SEO/GEO/AEO)](/ai-search-visibility-seo-geo-aeo/index.md) · [llms.txt and agent-readable sites](/ai-search-visibility-seo-geo-aeo/llms-txt-and-agent-readable-sites/index.md)

# dualmark

Library that serves a Markdown version of each page at the same URL through content negotiation, with adapters for Astro, Next.js, SvelteKit and Cloudflare.

An unrated entity, not a level-rated lesson. A repo from Dodo Payments; catalog added 2026-10-19, last verified 2026-10-19.

by [Dodo Payments](https://github.com/dodopayments)

[Read the original →](https://github.com/dodopayments/dualmark)

Category: [AI search visibility (SEO/GEO/AEO)](/ai-search-visibility-seo-geo-aeo/index.md)
Tags: [ai-search-visibility-seo-geo-aeo](/tags/ai-search-visibility-seo-geo-aeo/index.md), [llms-txt-and-agent-readable-sites](/tags/llms-txt-and-agent-readable-sites/index.md)
Added: 2026-10-19
Last verified: 2026-10-19
Status: ok
Resource kind: entity
Type: repo
Region: West
Original language: en
Access: free
Last modified: 2026-10-19
Subcategory: [llms.txt and agent-readable sites](/ai-search-visibility-seo-geo-aeo/llms-txt-and-agent-readable-sites/index.md)
Verification basis: Supplier-reported import check. Subsequent source corrections and content reviews are recorded separately.
Access evidence: Supplier-approved free inventory; not independently verified by this site.
Source domain: AI search visibility (SEO/GEO/AEO)
Source subdomain: llms.txt and agent-readable sites

Summary in our own words. Rights remain with the original creator. [Credit and correction policy](/about/index.md#credit-policy).

[Plain-text Markdown copy](/e/dodopayments-dualmark/index.md)