OpenTakeoff MCP server
io.github.Kentucky-ai/opentakeoff·v0.9.100·154 starsConstruction takeoff for AI agents: load plans, set scale, measure, count, export with provenance.
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154 stars1.6k downloads/wk
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If you have run it, two minutes of your experience saves the next person an afternoon.
OpenTakeoff tools
No tool declarations could be read from the package source. They show once the server is installed.
How OpenTakeoff compares
Against every graded MCP server, from our own scans and uptime checks. Updated after each scan run.
- Safety score
- 91/100
- higher than 85% of 48,255 servers
- GitHub stars
- 154
- more than 95% of 28,688 servers
- Downloads a week
- 1,641
- more than 95% of 12,191 servers with a package
Release history: 8 versions in the registry since 2026-09-13, latest 2026-10-25, typically one every 6 days.
Install OpenTakeoff in Claude Code, Cursor or VS Code
Runs npx -y opentakeoff-mcp on your machine. Read the scan report first; the gateway never runs local packages.
claude mcp add opentakeoff -- npx -y opentakeoff-mcp
What the publisher says
From the OpenTakeoff repository's README, as published. We do not edit it. Read it on GitHub
OpenTakeoff
The measurement engine for building plans—built so an AI agent can drive it, and so an estimator wants to.
A takeoff is the act of measuring quantities off a construction drawing. OpenTakeoff does it two ways over one engine: <!--tool-count-->53<!--/tool-count--> MCP tools for an agent, and a browser canvas for a person. Agents and people share the takeoff document and quantity calculations. Each sheet carries its calibration; measurements carry geometry, method and authorship. Recalibration updates quantities together, incompatible imports report scale conflicts, and agent measurements carry an explicit review status. See the Phase 1 test guide.
For agents · Try the canvas · The engine's contract · For the person at the canvas · The data layer · Research · Fork it · Contribute
The two manuals: agent manual · user manual
Protocol work: Takeoff Protocol draft and compatibility status—formalizing existing records; current takeoff behavior is unchanged.
Read this in: 日本語 · 한국어 · 简体中文
Watch it: an autonomous agent runs a takeoff, live, no cuts (2:47) · hospital finish plan → report in about a minute (1:14) · canvas walkthrough (1:10) · One-Click Area (0:51)
One-Click Area is temporarily gated. The flood engine is being re-validated against a wider plan corpus. Until that finishes the One-Click tool is off the canvas rail (O reports the gate) and the oneclick / detectrooms MCP verbs are not registered (a default build ships <!--tool-count-->53<!--/tool-count--> tools). Trace rooms with Area (A) in the canvas and measurepolygon over MCP; every other tool, sweep and derivation is unchanged. A build lifts the gate with VITEONECLICK=1 (canvas) / OPENTAKEOFFONECLICK=1 (server). Sections and videos below that show One-Click describe the engine as it returns — see docs/design/ONECLICK_GATE.md.
The Premium workspace offers compact controls, searchable actions and sheets, personal panel arrangements, adjustable surfaces and larger sheet previews. It is the default when this browser has no saved layout choice; Classic layout remains available. See the workspace design and research.
Start here
Shortened. The full README is on GitHub.
Nothing above is checked by us. What we check is on the safety report.
OpenTakeoff: common questions
- Is OpenTakeoff MCP server safe?
- Yes, by our scan: it is graded A (91/100). Read the OpenTakeoff safety report
- How do I install OpenTakeoff?
- It runs on your machine. Copy the Claude Code, Cursor, VS Code or Claude Desktop config from the install section.
- Does OpenTakeoff need an API key?
- Not as far as the registry entry and our scan can tell: no credentials are declared or required.
- Is OpenTakeoff maintained?
- The last commit was 32 days ago (2026-10-03). The latest release is v0.9.100.
- How does OpenTakeoff compare with other MCP servers?
- safety score 91/100 (higher than 85% of 48,255 servers); github stars 154 (more than 95% of 28,688 servers); downloads a week 1,641 (more than 95% of 12,191 servers with a package). Full comparison.