# Grammaropolis — AI Connector Grammaropolis publishes 5 MCP tools to Claude. Marketplace availability, tool surface, verification tier, and what Node8 measured against the live endpoint. Source: https://node8.ai/ai-connectors/education/grammaropolis/ --- [AI Connectors](https://node8.ai/ai-connectors/) · [Education & Research](https://node8.ai/ai-connectors/education/) # Grammaropolis Read-only Grammaropolis grammar curriculum for grades 1 to 8 Listed in Claude · 5 published tools · Community-listed [Claude connector docs](https://grammaropolis.com/teachers/claude#connector) [grammaropolis.com](https://grammaropolis.com/) Overview ## What Grammaropolis does Grammaropolis teaches English grammar through characters, each standing for a part of speech or a punctuation mark. The connector opens the catalogue behind that curriculum: five pillars covering parts of speech, punctuation, sentence construction, writing, and vocabulary, across grades 1 through 8. Full lesson bodies are served for the free anchor unit in each pillar at each grade, 40 lessons in total, while everything else returns details and a link. Common Core ELA-Literacy codes work as a lookup key. No account or sign-in is involved and no student data passes through. ### Who it is for Elementary and middle school English teachers planning standards-aligned grammar lessons. ### Tool surface Five tools, all reads: \`list\_pillars\` and \`list\_lessons\` to browse, \`get\_lesson\` by cell\_uid, \`find\_lessons\_for\_standard\` to go from a CCSS code to every lesson covering it, and \`about\_grammaropolis\` for the background a teacher would otherwise have to look up separately. Availability ## Where Grammaropolis is listed Grammaropolis is listed in the Claude connectors directory only. Grammaropolis has no app under the same domain in the ChatGPT directory; 392 of the 3,150 products here are on both marketplaces, and this is not one of them. The MCP server behind a Claude connector is usually the same server a ChatGPT app would need, so the absence is a distribution decision rather than a technical one. Claude listing ## In the Claude connectors directory Grammaropolis publishes 5 tools to Claude, a deliberately narrow surface; only 22.3% of the 1,253 Claude-listed connectors expose fewer. The median Claude-listed connector filed under Education & Research publishes 4, so this one runs one tool above its bucket's median and ranks 6th of 14 by tool count. It falls in the 4-6 tools band, which holds 16.2% of the Claude directory. ### Measured against the live endpoint A direct call to the endpoint returned 5 tools, matching the 5 the listing publishes. Probed 2026-08-07. #### Tools the server actually returns - `list_pillars` - `list_lessons` - `get_lesson` - `find_lessons_for_standard` - `about_grammaropolis` Grammaropolis publishes a remote MCP endpoint. Claude connects to it over HTTP; there is nothing to install locally. Every connector in the Claude directory is remote, all 1,253 of them, so transport is not a differentiator there. Publisher Grammaropolis Verification Community-listed (61.5% of the Claude directory) Filed under Education Endpoint `https://mcp.grammaropolis.com/api/mcp` Documentation [Publisher setup docs](https://grammaropolis.com/teachers/claude#connector) Published tools 5 · 4-6 tools band Depth rank in Education & Research 6 of 14 Snapshot August 2026 Grammaropolis is community-listed in the Claude directory, the tier 770 of 1,253 connectors sit in (61.5%). It is the default for a self-published server, and says nothing either way about quality. In the publisher's words ## How Grammaropolis describes it > Grammaropolis teaches grammar through a cast of characters who each are a part of speech or a punctuation mark. This connector gives Claude direct, read-only access to the Grammaropolis catalog so it can build lessons on the real concepts, characters, and Common Core standards behind the curriculum, across all five departments (Parts of Speech, the Punctuation Department, the Sentence Factory, The Writing Company, and Wonderful Words), Grades 1 through 8. It serves the full lesson body for each department's free anchor unit, 40 free lessons in all (one unit per department, every grade), and returns details plus a link for everything else. No account, no sign-in, and no student data. Quoted from the connector's own Claude directory listing as captured in August 2026. Node8 did not write it and does not vouch for it. Nearby ## Other Education & Research connectors ### [Academic Writing Toolkit](https://node8.ai/ai-connectors/education/academic-writing-toolkit/) Checks on citations, spelling, logic and BibTeX records ChatGPT ### [API Lessons](https://node8.ai/ai-connectors/education/api-lessons/) Directory of free Lightning Lessons on Maven ChatGPT ### [DataCamp](https://node8.ai/ai-connectors/education/datacamp/) Course recommendations for data and AI skills Claude · ChatGPT ### [to-teach](https://node8.ai/ai-connectors/education/to-teach/) Worksheets, exercises, and lesson plans built from source material Claude ### [Studyportals](https://node8.ai/ai-connectors/education/studyportals/) Degree programme search across countries ChatGPT ### [Tailo Lens](https://node8.ai/ai-connectors/education/tailo-lens/) Claim analysis and accessible reading for research ChatGPT [All 130 Education & Research connectors](https://node8.ai/ai-connectors/education/) This is an independent catalogue entry compiled by Node8 from Grammaropolis's public marketplace listing as it stood in August 2026. Listing facts come from the marketplaces; the comparisons against the rest of the directory and any live-endpoint measurements are Node8's. Node8 is not affiliated with Grammaropolis, and inclusion here is not an endorsement. ## Want your company reachable inside ChatGPT and Claude? Node8 builds MCP servers end to end: deciding which tools are worth exposing, the authentication and permission model, the review submissions, and the onboarding that gets them used. One server serves ChatGPT, Claude, and Microsoft Copilot. [See how it works](https://node8.ai/mcp) Book a strategy session