Reported issues for OpenTakeoff

Pod holds 17 of 20 problems reported by people outside the maintainer team. Issues filed by the project's own owners, members and collaborators are excluded entirely — a maintainer's release checklist is not a warning to a prospective user.

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Most discussed

RFC: the sheet graph — resolve room tags, schedules, legends, and detail callouts across a plan set

A single sheet never carries the answer

A-201 says room 102 — OFFICE. The finish schedule on A-001 says 102 → CP-1 / RB-1. The legend says CP-1 = carpet tile 24×24. Wall section 3/A-601 says the partition is 9'-0", which is what turns 128 linear feet of wall into a real RB-1 base quantity.

OpenTakeoff gives an agent read_sheet_text — positioned text, one sheet at a time — and nothing else. Every agent that has driven this engine has re-derived the entire cross-reference st

Read the thread · 2026-07-22 · closed · 8 comments

RFC: read the PDF layer tree — Optional Content Groups as first-class geometry filters

The heuristics exist to recover information the file already states

classifyHatchSegs in web/src/lib/oneclick.ts is a wall of tuned constants — HATCH_MIN_RUN, pitch-regularity bands, SPAN_PROTECT_RATIO, the filled-not-stroked poché exemption added after the VA plan drew its walls as solid shapes — and its entire job is to guess which segments are boundary and which are pattern.

A construction document exported from Revit, AutoCAD, or Archicad usually says so outright. PDF Optional C

Read the thread · 2026-07-22 · closed · 4 comments

MCP: a versioned computed-report export — opentakeoff.report.v1

Two downstream consumers have now built pricing tools on top of OpenTakeoff exports, and both hit the same gap: there is no first-class, versioned export of the computed takeoff — per-condition totals plus the materials buy list.

What exists today

`export_takeoff` emits `opentakeoff.takeoff_canvas.v1` — the raw annotations payload, exactly what the app autosaves. Perfect for round-tripping into the canvas; wrong shape for a consumer that wants totals.
`takeoff_summary` computes

Read the thread · 2026-07-29 · closed · 1 comment

MCP: waste is real math the agent can't reach — no tool sets a condition's waste_pct

The gap

takeoff_summary emits waste_pct and waste-adjusted *_net order quantities per condition — net figures are a first-class output of the server. But no tool can set waste: conditions minted through one_click / measure_polygon / measure_line / edit_materials start at waste_pct: 0 and nothing in the tool surface changes it (grep -i waste mcp/src/tools.ts matches only the takeoff_summary description). So for every agent-driven takeoff, net === gross.

Surfaced concretel

Read the thread · 2026-07-29 · closed · 1 comment

MCP: computed-report export — opentakeoff.report.v1 (totals + materials buy list), not just the raw canvas payload

The gap

The MCP server has two ways to get numbers out of a session:

takeoff_summary — per-condition quantities (floor/wall/border SF, LF, EA, SY, gross and *_net) plus grand totals. By design it strips materials for a compact quantities-only reply (mcp/src/outputs.ts, the edit_materials description).
export_takeoff — the exact opentakeoff.takeoff_canvas.v1 autosave payload. Materials appear here as config rows ({name, per, basis, unit, round}), not as computed ord

Read the thread · 2026-07-29 · closed · 1 comment

MCP: structured tracing on tool calls (opt-in, stderr)

An opt-in OPENTAKEOFF_MCP_TRACE=1 that logs one structured line per tool call to stderr (tool, duration, sheet, result size — never document content). Makes agent transcripts debuggable without corrupting the stdio wire. Design constraint: stdout is sacred (see mcp/bin.js).

Read the thread · 2026-07-13 · closed · 1 comment

Symbol tool: the canvas face for the sweep engine — marquee one device, count every placement

The state of things

symbol_sweep can take one marquee around a duplex receptacle and return every placement on the sheet — 0/90/180/270 and mirrored, near-matches withheld with reasons, and as of 0.9.43 a complete flag that refuses to let a truncated count read as a total (#261). The engine is web/src/lib/symbolsweep.ts, 546 lines, deterministic vector constellation matching with a 0.92 commit bar and a 0.75–0.92 withheld band, cross-sheet via the sheet graph's plan-role classificatio

Read the thread · 2026-08-16 · closed · 0 comments

MCP: correction rules — an imported rule an agent can re-run

The canvas turns an estimator's correction into a deterministic, re-runnable rule (#88): a deduct drawn fully inside a floor_area room becomes a rule, Preview stages the proposals, Apply commits one undoable batch.

Over the wire there is no verb. import_takeoff carries rules: [] into a session faithfully — and then nothing can run them. An agent that receives a takeoff whose estimator taught it "every room like this loses the mechanical chase" cannot apply the lesson; it can only re-derive

Read the thread · 2026-08-04 · closed · 0 comments

Most recent

MCP: cut_out — a real hole, reconciled, the way the canvas cuts one

An estimator has Cut Outs (#137): draw a hole inside a parent shape and the engine subtracts it for real — N holes per parent, overlap never double-deducts, the report and legend read the reconciled number, and the whole thing is one undo step.

An agent has role: "deduct". That commits an independent overlay shape: nothing links it to a parent, accumulateRole treats it as its own scope, and the marked set paints a decal rather than a hole. The two paths disagree about what a deduction *is

Read the thread · 2026-08-04 · closed · 0 comments

MCP: raster one_click for scanned sheets — wire the fallback the canvas already has

The canvas one-click falls back to a raster mask on scanned sheets (web/src/lib/rastermask.ts: Bradley adaptive threshold, vector-always-wins, raster_traced provenance). The MCP server refuses instead: 'This sheet has no vector linework… raster fallback not yet available in the MCP server.' The engine code exists and is pure; this is wiring, provenance passthrough, and a fixture. (Filed for completeness — vector-plan users never hit it, scanned-set users hit it immediately.)