Context7
Hacker ApprovedTied for most recommended of 21 MCP servers
Gives coding agents current library documentation over MCP, so answers rely less on outdated training data. Critics say it returns whole pages that crowd the context window.
Gives coding agents current library documentation over MCP, so answers rely less on outdated training data. Critics say it returns whole pages that crowd the context window.
47 people gave an opinion
- recommend it
- 40
- criticize it
- 7
- approval share
- 85%
Recommended in 10 of 13 months
- November 2025: recommended
- December 2025: recommended
- January 2026: recommended
- February 2026: recommended
- March 2026: recommended
- April 2026: recommended
- May 2026: recommended
- June 2026: recommended
- July 2026: recommended
- August 2026: recommended
- September 2026: not recommended
- October 2026: not recommended
- November 2026: not recommended (month in progress)
Why it carries the badge
- 40 people recommend itNeeds 10 or more, met.
- 5.7 recommenders for every criticNeeds 2 to 1 or better, met.
- Recommended in 10 of 13 monthsNeeds 4 or more, met.
The same three rules apply to every product, and the badge can’t be bought. How the badge works
What people say about it
The reasons people give, with the number of comments that give each one. Open a reason to read what they said.
Why people recommend it
Each mark is one comment
Keeps library docs current for agents
“I have some MCP servers like Context7 and Fetch that make sure the models have up to date information.”
Comment from 24 Dec 2025 in “Local AI is driving the biggest change in laptops in decades” “Context7 takes care of keeping _all_ the documentation available and provides a search function.”
Comment from 21 Nov 2025 in “Building more with GPT-5.1-Codex-Max” “access to some MCP like Context7 to get up to date documentations”
Comment from 13 Feb 2026 in “I asked Claude Code to remove jQuery. It failed miserably” - Comment from 4 Jan 2026 in “Total monthly number of StackOverflow questions over time”
- Comment from 22 Feb 2026 in “How I use Claude Code: Separation of planning and execution”
- Comment from 6 Nov 2025 in “Ask HN: Have people started to see cracks in the ChatGPT answers with time”
Agents can be told to use it
“You need to give it access to look up how do things, like context7.”
Comment from 6 Feb 2026 in “Claude Code Agent Teams” “You should instead positive enforcement to use tools like context7.”
Comment from 17 Feb 2026 in “Evaluating AGENTS.md: are they helpful for coding agents?” “they should use context7 when unsure about a library”
Comment from 15 Jul 2026 in “Show HN: Super Dario” - Comment from 3 Feb 2026 in “The Codex App”
Used in every session
“Since MCP came out the quality of code has improved since there is always context7”
Comment from 21 Jan 2026 in “Ask HN: Do you have any evidence that agentic coding works?” “Superpowers, Serena, Context7 feel like requried plugins to me.”
Comment from 6 Apr 2026 in “Claude Code is unusable for complex engineering tasks with the Feb updates” “Context7 MCP is the one I keep enabled for all sessions”
Comment from 2 Nov 2025 in “Claude Code can debug low-level cryptography” Helps with new or beta APIs
“The official plugin integration removes friction, but I still manually toggle it for beta APIs or very recent changes where the indexed docs lag.”
Comment from 7 Jan 2026 in “Anyone using Context7 MCP to avoid outdated docs in Claude?” “The first is great on planning sessions and leads to better usage of new-ish libraries”
Comment from 2 Feb 2026 in “Two kinds of AI users are emerging. The gap between them is astonishing” “Context7 (coming soon) great at code, way better than exa for code”
Comment from 17 Aug 2026 in “Show HN: OpenWebSearch – A router for web search indexes”
What people warn about
Each mark is one comment
Small gains in results
“hallucaniton rate decreased only a small bit”
Comment from 23 May 2026 in “Project Glasswing: An Initial Update” “I even gave it access to a Context7 MCP server for documentation and it barely made a difference.”
Comment from 3 Feb 2026 in “The Codex App” “which in a narrow context helps but not perfect”
Comment from 1 Mar 2026 in “AI is making junior devs useless” Returns too much text for context
“If one were to point an agent to a docs website, the amount of tokens consumed would use up too much of the context window”
Comment from 2 Mar 2026 in “MCP is dead. Long live the CLI” “context7 just returns whole pages of documentation, polluting the context window with info that isn't relevant”
Comment from 30 Nov 2025 in “Garry Tan says MCP "barely works" today”
Other MCP servers people recommend
The four most recommended other MCP servers, with the same counts for each, so you can compare like for like. The tick on each bar marks the 2 to 1 line the badge needs.
| Product | Recommend | Criticize | Approval | Months | Owned | Badge |
|---|---|---|---|---|---|---|
| Context7This page | 40 | 7 | 85% | 10 | — | Approved |
| Playwright MCP | 40 | 22 | 65% | 11 | — | — |
| Chrome DevTools MCP | 36 | 22 | 62% | 9 | — | — |
| Serena MCP | 18 | 3 | 86% | 9 | — | Approved |
| Context Mode | 16 | 1 | 94% | 6 | — | Approved |
What people said
40 of the 52 comments that mention it, newest first. Each links to the original comment.
“if you connect staan-search (there is a pi plugin for that) and ctx7 to this it almost does miracles.”
“Context7 (coming soon) great at code, way better than exa for code”
“they should use context7 when unsure about a library”
“one MCP server I find valuable (context7)”
“alongside context-completing tools like context7, deepwiki, docs.rs MCPs”
“hallucaniton rate decreased only a small bit”
“Superpowers, Serena, Context7 feel like requried plugins to me.”
“MCP - if you need discoverability. a great example for this is something like context7”
“This combination produces good results for me.”
“I switched from Context7 to exa-code recently.”
“If one were to point an agent to a docs website, the amount of tokens consumed would use up too much of the context window”
“which in a narrow context helps but not perfect”
“context7 to not to be stuck in the knowledge cutoff/past”
“You should instead positive enforcement to use tools like context7.”
“access to some MCP like Context7 to get up to date documentations”
“it's just a pre-generated static summarization that might not include the specific answers the agent needs”
“You need to give it access to look up how do things, like context7.”
“I even gave it access to a Context7 MCP server for documentation and it barely made a difference.”
“ask it to use the context7 mcp server”
“The first is great on planning sessions and leads to better usage of new-ish libraries”
“it'll make claude less dumb”
“Since MCP came out the quality of code has improved since there is always context7”
“The MCP tools I have installed make a huge different”
“I liked the new approach but I don't like the pseudo security framing”
“Context7 isn't any better than telling your agent to use trafilatura to scrape web docs for your libs”
“isn't that what Context7 already has?”
“it seems to be indexed by context7 so you could use it with their MCP server”
“The official plugin integration removes friction, but I still manually toggle it for beta APIs or very recent changes where the indexed docs lag.”
“Using https://context7.com/ might be the right next move here.”
“No downsides detected so far.”
“have the agent automatically fetch up to date documentation”
“it nearly always solves the problem for me”
“I have some MCP servers like Context7 and Fetch that make sure the models have up to date information.”
“context7 just returns whole pages of documentation, polluting the context window with info that isn't relevant”
“I tried using Context7 MCP with the SolidWorks docs but the results were not satisfactory.”
“Context7 takes care of keeping _all_ the documentation available and provides a search function.”
“Have you given using MCPs to provide documentation and examples a shot?”
“that's what context7 mcp is for!”
“let agents automatically fetch the latest documentation”
“Context7 MCP is the one I keep enabled for all sessions”
Counts come from 1,795,640 Hacker News comments, November 2025 to November 2026. How we count. Report a mistake.