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protogridR0· no sign-inAsk your AI to write in your Wren notebook: notes, graphs, flowcharts and formulas as real ink.
v1.0.0 · active · website · descriptor JSON · versions
{
"mcpServers": {
"wren": {
"type": "http",
"url": "https://mcp.wrenapp.ai/mcp"
}
}
}claude mcp add --transport http wren https://mcp.wrenapp.ai/mcp[mcp_servers.wren]
url = "https://mcp.wrenapp.ai/mcp"
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"wren": {
"type": "remote",
"url": "https://mcp.wrenapp.ai/mcp",
"enabled": true
}
}
}{
"mcpServers": {
"wren": {
"type": "http",
"url": "https://mcp.wrenapp.ai/mcp"
}
},
"deeplink": "cursor://anysphere.cursor-deeplink/mcp/install?name=wren&config=eyJ0eXBlIjoiaHR0cCIsInVybCI6Imh0dHBzOi8vbWNwLndyZW5hcHAuYWkvbWNwIn0%3D"
}{
"servers": {
"wren": {
"type": "http",
"url": "https://mcp.wrenapp.ai/mcp"
}
}
}{
"mcpServers": {
"wren": {
"httpUrl": "https://mcp.wrenapp.ai/mcp"
}
}
}extensions:
"wren":
enabled: true
name: "wren"
type: streamable_http
uri: "https://mcp.wrenapp.ai/mcp"
timeout: 300
protocol.modernprotocol.statelessprotocol.transportprotocol.list_ttlauth.prm, auth.as_metadata, auth.cimdauth.secret_in_urltools.descriptionstools.description_lengthtools.schemastools.annotationstools.directory_hintstools.token_costtools.api_dumptools.hidden_textstability.changes, stability.rug_pull, stability.new_linksdeps.known_vulns, deps.mcp_sdk_version, deps.resolvableNo tool definition changes recorded. A server's first observation is its baseline; later probes record what changes.
Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed. How it is computed.
+dns-namespace +website +reachable +uptime-100% +updated-0d-ago -no-repository
Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed. How it is computed.
| remote | auth | reachable | uptime 30d | p50 | protocol | last ok |
|---|---|---|---|---|---|---|
https://mcp.wrenapp.ai/mcp streamable-http | none | yes | 100% | 337 ms | 2025-11-25 | 2026-11-14 |
add_page | Add a NEW handwritten page at the end of an existing note (same drawing inputs as create_handwritten_note). Returns which note and page the ink went to and the note's outline; use it whenever the user stays on the note's topic. |
connect_accountread-only | Link the user's Wren account so authored notes land in their notebook. Returns the linked uid when a credential is present; otherwise explains that account linking must be completed first. |
create_handwritten_note | Create a NEW note in the user's Wren notebook with a handwritten page (pressure-faithful PencilKit strokes) drawn from a `figure{kind, content}`. The result has a link (noteUrl) that opens the note on any device — always give it to the user — and the note also syncs to the Wren iPad app. To add to a note that already exists use add_page (new page) or edit_page (same page) with its noteId — find it with list_notes or list_recent_notebooks. Same topic as an earlier note → add a page to it, not a new note. A figure is required: graphs (graph_2d, content.prompt = the equation), handwritten text (annotation, content.text = the exact words), formulas, tables, bar charts, timelines, flowcharts, mind maps, concept maps and more — call get_drawing_guide for every kind. Write in the user's language: Wren handwrites Hindi, Arabic, Bengali, Tamil, Telugu, Hebrew, Russian and most other scripts (not yet Chinese / Japanese / Korean) — never transliterate. A concept map reads best with at most 10 concepts and 11 links per page; a bigger one is split over pages automatically (links between pages are drawn on both with a page reference). |
edit_pagedestructive | Write handwriting onto an EXISTING page that Wren wrote. mode 'append' (default) keeps the page's ink and adds the new ink below it; mode 'replace' erases the page's ink and draws the new ink. Only pages get_note reports as editable (Wren-written and not changed on the iPad since) can be edited — the user's own handwriting is never modified; use add_page for those notes. Pick the page by pageNumber (1-based) or pageId; omitted = last page. If an append has no room on the page, Wren puts it on a new page at the end of the note and says so. |
get_drawing_guideread-only | Returns what Wren can draw (every kind), the exact arguments for each with a working example, and the rules for writing into notes. Call it before your first drawing in a conversation, or whenever unsure which kind or fields to use. Read-only; needs no account. |
get_noteread-only | Show one note's title, subject, page size and its pages (number, id, ink stroke count, whether Wren can add ink to it). Use before edit_page to pick the page. |
get_profileread-only | Return the stable Wren account id (Firebase uid) and basic profile of the currently linked account. Call this after connect_account to confirm linkage. |
list_notesread-only | List the user's Wren notes, most recently edited first, with id, title, subject and page count. Use it to find the noteId before add_page, edit_page, get_note or update_note. |
list_recent_notebooksread-only | The user's latest notes, newest first: id, title, subject, pages, last edit, the outline of pages Wren wrote, and the note this chat has been writing to. Use it when the user returns to a topic, then add pages to that noteId. |
plan_notebookdestructive | Plan a 1-30 page handwritten Wren notebook and write its cover and contents (page 1; a plan over 8 pages gets a cover page and contents pages). Pass noteId to extend a plan and update the contents. Then write each page via write_notebook_page with target.noteId and planSlot, one call per slot. Same topic as an earlier note → pass its noteId, not a new note. Optional: part (topic group, e.g. "Lecture 3") per page; coverFigure = one small sketch of the topic. |
render_note_previewread-only | Render a pressure-faithful SVG preview of a handwritten note's strokes (the same VectorStroke array create_handwritten_note produces), framed at the page size, with an Open in Wren button (pass the note link as openInNoteNestUrl). Returns an inline widget. |
update_notedestructive | Change a note's title and/or subject. Does not touch its pages. |
write_notebook_pagedestructive | Write a handwritten study page in the user's Wren notebook (same topic -> add/replace via target.noteId, not a new note). Write a FULL page (not for verbatim): 110-140 words in 6-8 blocks (a table or figure = ~40 words), a heading per part, 3-6 key terms marked (underline or highlight, never a whole callout; a mark copies exact words of its own block), every number+unit and formula marked as math, one accent, at most 1 short marginNote, and the takeaway in a callout (key_answer, key_idea) or summary. Pair two <=12-word callouts with layoutHint:"side_by_side". Editable ink in Wren's handwriting font, not the user's own handwriting. Recipes: worked_example = problem callout (box) + 3-4 steps (1-2 sentences + equation each) + Check heading+paragraph + common_mistake & key_answer callouts. concept_summary = definition callout + boxed equation or figure (table/flowchart, required) + 2 headings with 2-sentence paragraphs + key_idea callout. comparison_sheet = 1-sentence intro + 5-6 row table or bar_chart + heading+paragraph on why it matters + common_mistake & key_idea callouts (side_by_side). process_walkthrough = overview + 4-6 steps, each with label (stage name) + 1-2 sentences, a flowchart of the stages (cycle: last edge back to the first) + key_idea or summary. revision_sheet = 2-3 headings with concise paragraphs/equations + common_mistake & remember callouts (side_by_side) + 4-item checklist. verbatim = text the user gave you to copy: their words unchanged and once, in paragraph/heading blocks, nothing added. |
Schemas: list_tools.
{
"name": "ai.wrenapp/wren",
"$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
"remotes": [
{
"url": "https://mcp.wrenapp.ai/mcp",
"type": "streamable-http"
}
],
"version": "1.0.0",
"websiteUrl": "https://www.wrenapp.ai",
"description": "Ask your AI to write in your Wren notebook: notes, graphs, flowcharts and formulas as real ink."
}