Context7
by upstash
Feeds AI the latest docs for libraries and frameworks before it answers, so code it writes does not use outdated, removed functions.
Computer or cloud★ 64,224MITUpdated yesterday
Install
Greenlit Books
Overview
Description from the maker (original English)
Search the Greenlit AI books, read any chapter one free, and look up the terms they define.
PopNx MCP’s three pillars
These three are never merged into one score: opinions, measurements and popularity are different things.
- User voiceiNo reviews yetReviews open together with accounts in a later step
- Our basic checksi1 of 1 passedChecked from public information; code not scanned yet
- UsageiNot measured yet★ –
What you can do with it
We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.
- Connection: Runs in the cloud
- Transport: Streamable HTTP
- Category: Search & AI memory
Install
Pick the AI app you use, then copy the settings.
Before you install
- Basic checks: 1 of 1 passed
- Runs on the maker’s server: what you ask it goes through their server.
- The registry lists no key to fill in.
You need
- Runs in the cloudNothing to install; it connects over the internet
Which app do you use?
Pick your app above. We remember it, so next time the button says “Install in …”.
Works in Claude on the web, desktop and mobile:
- Open Settings → Connectors
- Press Add custom connector
- Paste the address below and press Add
- If it asks you to sign in, sign in with the maker
https://greenlitbooks.com/api/mcpRun this in your terminal
claude mcp add --transport http catalog https://greenlitbooks.com/api/mcpOr copy the settings yourself
Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json
{
"mcpServers": {
"catalog": {
"url": "https://greenlitbooks.com/api/mcp"
}
}
}Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.
Or copy the settings yourself
Paste into .vscode/mcp.json in your project
{
"servers": {
"catalog": {
"type": "http",
"url": "https://greenlitbooks.com/api/mcp"
}
}
}Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.
ChatGPT connects only to servers on the internet:
- Open ChatGPT on the web → Settings → Connectors (Apps)
- Press Create or Add (some plans need Developer mode under Advanced first)
- Paste the address below, give it a name and save
- If it asks you to sign in, sign in with the maker
https://greenlitbooks.com/api/mcpMenu names can differ slightly by plan and over time.
Your choice stays on this device in a cookie; no account needed.
These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.
What it can do
We have not read this server’s tool list yet; we check endpoints in rotation.
Basic checksi
We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 7, 2026
- ✓ Pass
Maker matches the repo
The registry name was verified against the domain greenlitbooks.com (the registry checks domain ownership)
- … Not checked yet
Still maintained
We have not read this repo from GitHub yet
- … Not checked yet
Has a licence
We have not read this repo from GitHub yet
- … Not checked yet
Endpoint responds
Not checked yet; we check endpoints in rotation
- … Not checked yet
Sign-in with OAuth
Not checked yet; we check endpoints in rotation
- … Not checked yet
No hidden instructions in tool descriptions
Not checked yet; we read the tool list when we check the endpoint
Compared with others in Search & AI memoryi
- More stars than 0% of the other 7286 servers in this category
- Published to the registry more recently than 46% of the other 7286 servers in this category
- Basic checks equal to or better than 100% of the other 7286 servers in this category
Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.
Common questions
Is Greenlit Books safe?
It passed 1 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.
What keys or codes does it need?
The registry does not list a required key, though some servers ask you to sign in on first use.
Does it run on my computer or in the cloud?
It runs in the maker’s cloud. Connect over the internet with nothing to install, but what you send passes through the maker’s servers.
Is it still maintained?
The GitHub repo last changed –, and the latest version (1.3.0) reached the registry 2 months ago.
Which apps can use it?
Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. It connects by URL, so apps that accept remote MCP servers work too, such as ChatGPT in developer mode.
What can I use instead?
In the same category: Context7, Codebase Memory, Exa
Alternatives
Servers in the same category from other makers, sorted by stars.
Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi
Codebase Memory
by DeusData
Codebase knowledge graph for AI agents — 162 languages, sub-ms queries, 99% fewer tokens.
Runs on your computer★ 48,148MITUpdated 21 days ago
Install
Exa
by exa-labs
Connect AI agents to Exa for web search, content fetching, and multi-step research.
Runs in the cloud★ 5,213MITUpdated last month
Install
README from the maker
Open the README
Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.
Greenlit Books MCP server
The Greenlit Books catalog as a remote MCP server: practical books on working with AI, held to one standard, every claim is something you can check. All titles are live on Amazon and free to read with Kindle Unlimited.
- Endpoint:
https://greenlitbooks.com/api/mcp(streamable HTTP, stateless, no auth) - Registry name:
com.greenlitbooks/catalog(version 1.5.0) - Docs for humans and agents: https://greenlitbooks.com/developers
- Plain JSON API (same data, plain GET): https://greenlitbooks.com/api/v1 with an OpenAPI 3.1 spec
Tools
| Tool | What it does |
|---|---|
find_answer_in_books | Ask a question in your own words and get the passages that answer it, from what the books publish free: chapter one of every book (by section), each book's named concept and its FAQ, the glossary, the claim ledger and the guides. Matched by words and by meaning. Each passage comes with the exact URL to quote, the finished citation, and the page to read for more; a question the free pages do not answer returns nothing. |
search | Search everything on greenlitbooks.com: safety verdicts on AI agents, MCP servers and coding tools ("is X safe"), field notes, guides and the books. Returns ids to pass to fetch. |
fetch | Read one page by an id from search: the page as markdown, with its canonical URL to cite and its dates. |
search_greenlit_books | Ranked full-text search over the catalog. Filters: series, audience, limit. |
get_book | One book in full: chapters, word count, free chapter one, Amazon Kindle and paperback links, prices, Kindle Unlimited status, related reading. |
find_books_for_topic | Match a topic phrase (agent reliability, prompt injection, human in the loop, durable execution, ...) against the curated topic map. |
get_reading_path | One series with its books in reading order. |
get_concept | The named question a book answers, with its short answer, full explanation, and a links block (free chapter, Amazon, cite-as). |
get_free_chapter | The complete text of chapter one of any book, free to read and to quote, with the chapter list and where to get the rest. |
cite_source | The finished citation for a book, one of its free chapters, or one of its coined terms: the line to print, the canonical URL, the markdown twin of the same page, and the date it was last verified. It asserts nothing about the content, only how to name the source. |
define_term | The glossary: a term the books coin or pin down (the green lie, blast radius, gate faith), defined in the book's own words, with the chapter, the other books that use it, a checkable claim, related terms, and links to cite and hand off. Unknown term returns the full list with aliases. |
check_claim | Search the claim ledger for claims bearing on a statement, before asserting it. Each hit carries the claim, a citation URL resolving to that exact sentence, what kind of statement it is and the one-line rule for quoting that kind, a citation already written in prose and BibTeX, and for every external source both what it establishes and what it does not. Filter to basis=external when only a published result will do. Returns nothing when the shelf has no claim on the subject, which is an answer rather than a failure. |
Connect
Claude Code
claude mcp add --transport http greenlit-books https://greenlitbooks.com/api/mcpClaude Desktop / claude.ai: Settings > Connectors > Add custom connector, URL https://greenlitbooks.com/api/mcp.
Cursor / any client with JSON config
{"mcpServers": { "greenlit-books": { "url": "https://greenlitbooks.com/api/mcp" } } }
Install as a plugin
This repository is also a plugin for Cursor, Grok Bot and Grok Build. It contains the connection to the server above and four skills that tell the agent when to use it. There are no rules, commands, hooks or scripts, so there is no code to run on your machine.
- Cursor and Grok Bot: open the plugin marketplace, search for Greenlit Books, and install.
- Grok Build: run
/marketplace, search for Greenlit Books, and install.
| Skill | Use it when you ask |
|---|---|
answer-from-the-books | How, why or what about building, running, securing or trusting AI agents, or about an idea such as the green lie, blast radius or gate faith. Answers from the free chapters, concept pages, glossary and claim ledger, with a citation for each passage. |
check-a-claim | Whether a statement about AI agents is true, or where a claim comes from. Searches the claim ledger and says what each source does and does not establish. |
check-ai-agent-safety | Whether a named AI agent, MCP server or coding assistant is safe to use. Reports the dated verdict and the version it covers. |
recommend-a-book | Which book to read for a topic, in what order, or where to read it free. |
| File | Read by |
|---|---|
.cursor-plugin/plugin.json, mcp.json | Cursor and Grok Bot |
.grok-plugin/plugin.json, .mcp.json | Grok Build |
skills/*/SKILL.md, assets/logo.svg | both |
Network and credentials
- The plugin connects to one endpoint,
https://greenlitbooks.com/api/mcp, over HTTPS (streamable HTTP). - No credentials. There is no sign-in, no OAuth and no API key, and the plugin reads nothing from your disk.
- Every tool is read-only. Requests are handled as described in the privacy policy.
Notes
- Read-only. No accounts, no keys, no rate-limit registration.
- The server is stateless; every response is derived from the live catalog.
- Amazon links are clean
/dp/product URLs. - The catalog intentionally omits publication dates, page counts, and ISBNs: it carries no verified source for them, and nothing is invented.
- Glossary definitions are quoted, not written: each is verified verbatim against the book's manuscript when the site is built. Terms borrowed from another field (blast radius, span of control) say so.
- Every
define_termandget_conceptresult ends with alinksblock. Cite the glossary or concept URL; send readers tofreeChapterfirst, thenamazonKindle.
This repository holds the server manifest, the plugin manifests and the documentation. The server itself runs on greenlitbooks.com.
License
MIT. The books' free chapters and the pages the server returns are published on greenlitbooks.com under that site's own terms.