ReadMe: vendor profile

In short

ReadMe builds llms.txt and .md copies, but an admin has to switch on Markdown for Agents before Accept: text/markdown returns markdown. docs.readme.com answered a missing page with a 404 and a 430-byte markdown body. New projects get an MCP server by default. Starter is free, and Pro is $250 a month.

At a glance

standards.txt readme

llms-txt               = supports
markdown-negotiation   = partial
markdown-twin          = supports
initial-html           = no statement
real-404               = supports
vary-accept            = no statement

3 supports, 1 partial or announced, 2 no statement.

ReadMe Docs platform

ReadMe is a hosted API docs hub that builds llms.txt from the sidebar, serves .md copies of pages, sends markdown on Accept: text/markdown once Markdown for Agents is switched on, and gives paid plans custom 404 pages and redirects.

Type: Docs platform
Home page: readme.com, answered HTTP 200 on 2026-11-05
Last read: 5 November 2026

What it does for this layer

ReadMe's changelog of 2025-05-09 added llms.txt, switched on from a setting in the AI dropdown on Refactored projects, and made every page readable as plain markdown by adding .md to its URL. [primary source, 2025-05-09] source, read 5 November 2026.
ReadMe's AI Discoverability release of 2026-08-03 brought agent link headers and content signals and turned on an MCP server by default for new projects. [primary source, 2026-08-03] source, read 5 November 2026.
ReadMe's Markdown for Agents feature, on all plans, returns clean Markdown when an agent sends Accept: text/markdown, after an admin turns it on in the Markdown Availability group of AI Discoverability. [primary source] source, read 5 November 2026.
ReadMe's generic 404 page has a Suggest similar pages toggle, on by default, that shows up to three matching links in the first page load without an extra client request. [primary source] source, read 5 November 2026.
ReadMe limits its custom error page choice and redirect rules, found under Settings, Errors & Redirects, to the Pro and Enterprise plans. [primary source] source, read 5 November 2026.
ReadMe redirect rules accept JavaScript-style regular expressions with $1 captures, run in written order, and fire only for URLs where no page exists. [primary source] source, read 5 November 2026.
Once a ReadMe project has a custom domain, visitors to its original readme.io subdomain are redirected to that domain, and links to the main version path redirect to the unversioned URL. [primary source] source, read 5 November 2026.
ReadMe's technical FAQ says pages are cached for 15 minutes for logged-out readers, while signed-in users always get the latest content. [primary source] source, read 5 November 2026.
ReadMe's Starter plan is $0 a month for one project and already includes the AI Dropdown, LLMs.txt and an MCP server, with Ask AI sold at $150 a month. [primary source, 2026-11-05] source, read 5 November 2026.
ReadMe Pro costs $250 a month for one project and adds Ask AI Lite, AI Linting, a Docs Audit preview, the AI Writer, branching and custom HTML and CSS. [primary source, 2026-11-05] source, read 5 November 2026.
ReadMe's changelog of 2026-01-05 made every Docs Audit run check the documentation for broken links. [primary source, 2026-01-05] source, read 5 November 2026.
A curl GET of a made-up docs.readme.com page with Accept: text/markdown on 2026-11-05 returned HTTP 404 with a text/markdown body of 430 bytes. [observed, 2026-11-05] source, read 5 November 2026.
ReadMe's markdown answer for docs.readme.com/main/docs/ai-ready-docs on 2026-11-05 carried vary: Accept, Accept-Encoding and x-robots-tag: noindex, nofollow. [observed, 2026-11-05] source, read 5 November 2026.
The HTML response of a ReadMe docs page on 2026-11-05 carried a Link header pointing to its .md copy with rel alternate and type text/markdown. [observed, 2026-11-05] source, read 5 November 2026.
ReadMe's error-pages article shipped one TechArticle JSON-LD block in its initial HTML when fetched with curl on 2026-11-05. [observed, 2026-11-05] source, read 5 November 2026.

Products and plans

Plans and prices as the vendor's own pages showed them on the date read.
Product	What it is	Price	As of	Source
ReadMe Starter	One-project API hub with bidirectional sync, interactive API reference, custom domain, LLMs.txt, AI Dropdown and MCP server.	Free Starter, $0 per month	2026-11-05	source
ReadMe Pro	Adds reviews, branching, custom HTML and CSS, reusable content, AI Linting and the AI Writer.	From USD 250 Pro, per month, 1 project; 14-day trial of Pro features	2026-11-05	source
ReadMe Ask AI	Assistant that answers reader questions from published content inside the hub.	From USD 150 Add-on listed at $150 per month on Starter	2026-11-05	source
ReadMe Enterprise	Multiple combined projects, full docs audit with history, Ask AI API access and custom SLAs.	Quote on request Custom pricing	2026-11-05	source

Standards

The six standards this site tracks; no statement means the pages read said nothing.
Standard	Status	What the vendor's pages say	Source
llms-txt	supports	ReadMe builds llms.txt from the sidebar and publishes it at the project root, with a toggle under AI Discoverability.	source
markdown-negotiation	partial	Markdown for Agents answers Accept: text/markdown on all plans once an admin switches it on.	source
markdown-twin	supports	Every page can be read as plaintext markdown by adding .md to its URL.	source
initial-html	no statement	No rendering statement found in the plans, error-pages or AI-ready docs; the error-pages HTML fetched on 2026-11-05 held the article text.	none
real-404	supports	ReadMe serves a 404 page by default for broken links, and a made-up path returned 404 on 2026-11-05.	source
vary-accept	no statement	No statement on Vary found in the AI-ready docs; responses on 2026-11-05 carried vary: Accept, Accept-Encoding.	source

Checks on its own site

Readings of readme.com, the vendor's own website, which describe that site and not the product.
Reading	Result	Date
Home page request	HTTP 200; H1 in the initial HTML: no; 2,179 words; 0 JSON-LD blocks	2026-11-05
Request with Accept: text/markdown	HTTP 200, text/markdown, Vary: Accept	2026-11-05
/llms.txt at the host root	HTTP 200, text/plain, 60 KB, starts with an H1	2026-11-05
A made-up path	HTTP 404	2026-11-05
Ora score, cached	64, grade C	2026-11-01
Cloudflare keyless scan	33, L1 Basic Web Presence	2026-11-05
Shared crawl row	outside the ranked slice; home page HTTP 200; H1 in the HTML: no; 2,292 words; JSON-LD types: none; answers markdown: yes; made-up path HTTP 404; llms.txt valid: yes	2026-11-04

What it does not do

Markdown for Agents is a switch in AI Discoverability, so a ReadMe project that never flips it keeps sending HTML to agents asking for markdown.
ReadMe cannot redirect a URL that still has a page behind it; its redirect list only catches paths that would otherwise 404.

Related pages on this site

Sources

ReadMe: home page https://readme.com/, read 5 November 2026
Ask AI & llms.txt https://docs.readme.com/main/changelog/ask-ai-llms-txt, read 5 November 2026
AI Discoverability https://docs.readme.com/main/changelog/ai-discoverability, read 5 November 2026
AI-Ready Docs https://docs.readme.com/main/docs/ai-ready-docs, read 5 November 2026
Error Pages and Redirects https://docs.readme.com/main/docs/error-pages, read 5 November 2026
Redirect Scenarios https://docs.readme.com/main/docs/redirect-scenarios, read 5 November 2026
Technical FAQ https://docs.readme.com/main/docs/technical-faq, read 5 November 2026
Plans and Pricing https://docs.readme.com/main/docs/plans-and-pricing, read 5 November 2026
Broken Link Checker https://docs.readme.com/main/changelog/broken-link-checker, read 5 November 2026

Last reviewed 5 November 2026