# Skills 43 installable skills in the open Agent Skills format (SKILL.md). Claude app: upload the zip. Claude Code: ~/.claude/skills//SKILL.md. Codex: ~/.agents/skills//SKILL.md. OpenCode: ~/.config/opencode/skills//SKILL.md. - **[IFC quantity takeoff](https://aibuilderacademy.netlify.app/skills/ifc-quantity-takeoff/SKILL.md)** — Measures an IFC model with IfcOpenShell: Qto sets first, geometry as fallback, grouped by storey, type and material, with a list of what could not be measured. Works in: Claude Code · Claude Cowork · Codex · any agent that can run Python. Zip: https://aibuilderacademy.netlify.app/downloads/skills/ifc-quantity-takeoff.zip - **[Revit model audit (via MCP)](https://aibuilderacademy.netlify.app/skills/revit-model-audit/SKILL.md)** — Health check of a Revit model through an MCP connection: identity, levels, counts, rooms, links, warnings and suspicious zeros. Works in: Claude Desktop / Cowork with a Revit MCP server · Cursor · Codex with a Revit MCP server. Zip: https://aibuilderacademy.netlify.app/downloads/skills/revit-model-audit.zip - **[Last Planner weekly plan](https://aibuilderacademy.netlify.app/skills/last-planner-weekly/SKILL.md)** — Computes PPC, classifies reasons for non-completion and proposes next week's commitments only from constraint-free tasks. Works in: Claude · Claude Cowork · Claude Code · Codex · any agent that reads spreadsheets. Zip: https://aibuilderacademy.netlify.app/downloads/skills/last-planner-weekly.zip - **[Daily site report](https://aibuilderacademy.netlify.app/skills/daily-site-report/SKILL.md)** — Turns notes, voice transcripts and photos into the same clean daily report format every day. Works in: Claude · Claude Cowork · Claude Code · Codex. Zip: https://aibuilderacademy.netlify.app/downloads/skills/daily-site-report.zip - **[RFI writer](https://aibuilderacademy.netlify.app/skills/rfi-writer/SKILL.md)** — Drafts one-question RFIs with document references, options and schedule impact. Works in: Claude · Claude Cowork · Claude Code · Codex. Zip: https://aibuilderacademy.netlify.app/downloads/skills/rfi-writer.zip - **[Unit price analysis (APU) builder](https://aibuilderacademy.netlify.app/skills/apu-builder/SKILL.md)** — Builds APUs with explicit productivity and waste and never invents prices; rolls up to a budget with AIU when quantities are given. Works in: Claude · Claude Cowork · Claude Code · Codex. Zip: https://aibuilderacademy.netlify.app/downloads/skills/apu-builder.zip - **[Construction skill creator](https://aibuilderacademy.netlify.app/skills/aeco-skill-creator/SKILL.md)** — Interviews a construction professional and packages a repeated task as a new SKILL.md, then tests it. Works in: Claude · Claude Cowork · Claude Code · Codex · Antigravity. Zip: https://aibuilderacademy.netlify.app/downloads/skills/aeco-skill-creator.zip - **[IFC model QA before an exchange](https://aibuilderacademy.netlify.app/skills/ifc-model-qa/SKILL.md)** — One script checks units, spatial structure, storeys, georeferencing, duplicate GlobalIds, containment, proxies, types, property and quantity coverage, openings and geometry, and writes a report plus an issue CSV. Works in: Claude Code · Claude Cowork · Codex · any agent that can run Python. Includes: scripts/ifc_qa.py. Zip: https://aibuilderacademy.netlify.app/downloads/skills/ifc-model-qa.zip - **[Validate an IFC model against IDS requirements](https://aibuilderacademy.netlify.app/skills/ifc-ids-validation/SKILL.md)** — Runs ifctester on a model and an IDS 1.0 file, writes HTML, JSON and a failures CSV (optionally BCF), and warns when a specification applies to zero elements. Works in: Claude Code · Claude Cowork · Codex · any agent that can run Python. Includes: references/ids-quick-reference.md, scripts/check_ids.py. Zip: https://aibuilderacademy.netlify.app/downloads/skills/ifc-ids-validation.zip - **[From information requirements (LOIN table) to an IDS file](https://aibuilderacademy.netlify.app/skills/loin-to-ids/SKILL.md)** — Turns a spreadsheet of required classes, properties, values, materials and classifications into a valid IDS 1.0 XML with ifctester, ready for every model exchange. Works in: Claude Code · Claude Cowork · Codex · any agent that can run Python. Includes: scripts/loin_to_ids.py. Zip: https://aibuilderacademy.netlify.app/downloads/skills/loin-to-ids.zip - **[Compare two versions of an IFC model](https://aibuilderacademy.netlify.app/skills/ifc-model-diff/SKILL.md)** — Matches elements by GlobalId and lists what was added, deleted or changed (class, name, type, storey, material, placement, properties) as a change report and CSV. Works in: Claude Code · Claude Cowork · Codex · any agent that can run Python. Includes: scripts/ifc_diff.py. Zip: https://aibuilderacademy.netlify.app/downloads/skills/ifc-model-diff.zip - **[Asset register (COBie-style) from an IFC model](https://aibuilderacademy.netlify.app/skills/ifc-asset-register/SKILL.md)** — Extracts facility, floors, spaces, types, components and systems into COBie-style CSV sheets, plus a list of missing handover data per asset. Works in: Claude Code · Claude Cowork · Codex · any agent that can run Python. Includes: scripts/asset_register.py. Zip: https://aibuilderacademy.netlify.app/downloads/skills/ifc-asset-register.zip - **[Clash detection on IFC with IfcOpenShell](https://aibuilderacademy.netlify.app/skills/ifc-clash-check/SKILL.md)** — Hard clashes, collisions or clearance checks between two element groups (e.g. ducts vs beams), clustered into issues with locations, without Navisworks. Works in: Claude Code · Claude Cowork · Codex · any agent that can run Python. Includes: scripts/clash.py. Zip: https://aibuilderacademy.netlify.app/downloads/skills/ifc-clash-check.zip - **[Draw a 2D plan as code (Python + ezdxf -> DXF)](https://aibuilderacademy.netlify.app/skills/dxf-sheet-from-code/SKILL.md)** — Write a drawing as a Python script with layers, walls, openings, dimensions and a title block, export DXF and open it in any CAD; includes the full script of a real apartment plan. Works in: Claude Code · Claude Cowork · Codex · any agent that can run Python. Includes: references/example_floor_plan.py. Zip: https://aibuilderacademy.netlify.app/downloads/skills/dxf-sheet-from-code.zip - **[Change a Revit model through MCP, safely](https://aibuilderacademy.netlify.app/skills/revit-mcp-write-safely/SKILL.md)** — The protocol for write tools (Revit 2027.2 Write/Experimental tech preview or community servers): backup, read-only dry run, approved change list, small batches, read-back and a change log. Works in: Claude Desktop / Cowork with the vendor MCP connected · other MCP clients. Zip: https://aibuilderacademy.netlify.app/downloads/skills/revit-mcp-write-safely.zip - **[Revit documentation QA (sheets, views, tags, revisions)](https://aibuilderacademy.netlify.app/skills/revit-documentation-qa/SKILL.md)** — Read-only checks of sheets and views through MCP: sheet numbering, views not on sheets, untagged rooms and doors, revision clouds vs schedule, title block data. Works in: Claude Desktop / Cowork with the vendor MCP connected · other MCP clients. Zip: https://aibuilderacademy.netlify.app/downloads/skills/revit-documentation-qa.zip - **[Quantities from Revit schedules, traceable](https://aibuilderacademy.netlify.app/skills/revit-schedule-quantities/SKILL.md)** — Export schedules through MCP (CSV), map them to budget items, check units and zeros, and deliver quantities with the element ids behind each number. Works in: Claude Desktop / Cowork with the vendor MCP connected · other MCP clients. Zip: https://aibuilderacademy.netlify.app/downloads/skills/revit-schedule-quantities.zip - **[Read Forma (formerly ACC) issues with the APS API](https://aibuilderacademy.netlify.app/skills/aps-construction-data/SKILL.md)** — Read-only script for the Autodesk Platform Services Issues API: pages through a project's issues, writes a CSV and an overdue digest by assignee and status. Token from an environment variable. Works in: Claude Code · Claude Cowork · Codex · any agent that can run Python. Includes: scripts/acc_issues.py. Zip: https://aibuilderacademy.netlify.app/downloads/skills/aps-construction-data.zip - **[Site feasibility: which zoning rule governs](https://aibuilderacademy.netlify.app/skills/forma-site-feasibility/SKILL.md)** — Computes the governing rule (FAR, coverage, setbacks, height) for a lot with the user's zoning values and folds Autodesk Forma analyses into a one-page feasibility brief. Works in: Claude Code · Claude Cowork · Codex · any agent that can run Python. Includes: scripts/feasibility.py. Zip: https://aibuilderacademy.netlify.app/downloads/skills/forma-site-feasibility.zip - **[Procore API, read-only first (projects, RFIs, submittals)](https://aibuilderacademy.netlify.app/skills/procore-api-connector/SKILL.md)** — A small Python client for the Procore REST API with OAuth token from the environment, the Procore-Company-Id header, pagination and rate-limit handling; exports RFIs and submittals to CSV for digests. Works in: Claude Code · Claude Cowork · Codex · any agent that can run Python. Includes: scripts/procore_client.py. Zip: https://aibuilderacademy.netlify.app/downloads/skills/procore-api-connector.zip - **[Bluebeam Revu markups through MCP](https://aibuilderacademy.netlify.app/skills/bluebeam-markup-review/SKILL.md)** — Summarise and track review comments in Revu with its official MCP server (Bluebeam Max, Revu 21.9+): markup log, status by reviewer, RFIs from comments, state changes only after approval. Works in: Claude Desktop · ChatGPT desktop · GitHub Copilot CLI · AnythingLLM. Zip: https://aibuilderacademy.netlify.app/downloads/skills/bluebeam-markup-review.zip - **[What changed between two drawing sets](https://aibuilderacademy.netlify.app/skills/drawing-revision-diff/SKILL.md)** — Pairs sheets by number across two PDF sets, lists added and removed sheets and the changed text lines per sheet, so the team knows where to look before the clouds arrive. Works in: Claude Code · Claude Cowork · Codex · any agent that can run Python. Includes: scripts/drawing_diff.py. Zip: https://aibuilderacademy.netlify.app/downloads/skills/drawing-revision-diff.zip - **[Submittal pre-review with a compliance matrix](https://aibuilderacademy.netlify.app/skills/submittal-review/SKILL.md)** — Checks a product data or shop drawing submittal requirement by requirement against the spec section, quoting both sources, and drafts the reviewer's comments without stamping. Works in: Claude · Claude Cowork · ChatGPT · Codex · any agent with Agent Skills. Zip: https://aibuilderacademy.netlify.app/downloads/skills/submittal-review.zip - **[Registers from the specification (submittals, tests, closeout)](https://aibuilderacademy.netlify.app/skills/spec-requirements-register/SKILL.md)** — Reads a spec book section by section and builds the submittal register, the inspection and test plan and the closeout checklist, each line with its clause and trigger. Works in: Claude · Claude Cowork · ChatGPT · Codex · any agent with Agent Skills. Zip: https://aibuilderacademy.netlify.app/downloads/skills/spec-requirements-register.zip - **[Punch list from walk-through notes](https://aibuilderacademy.netlify.app/skills/punch-list-manager/SKILL.md)** — Turns messy notes, voice transcripts and photos into a clean punch list by unit, room and trade, tracks closeout and drafts one message per subcontractor. Works in: Claude · Claude Cowork · ChatGPT · Codex · any agent with Agent Skills. Zip: https://aibuilderacademy.netlify.app/downloads/skills/punch-list-manager.zip - **[Change order impact: scope, cost, time and notice](https://aibuilderacademy.netlify.app/skills/change-order-impact/SKILL.md)** — Builds the scope delta, quantities, cost with the user's prices, schedule impact and the contractual notice deadline, then drafts the log entry and the notice for human review. Works in: Claude · Claude Cowork · ChatGPT · Codex · any agent with Agent Skills. Zip: https://aibuilderacademy.netlify.app/downloads/skills/change-order-impact.zip - **[Job hazard analysis for a task](https://aibuilderacademy.netlify.app/skills/jha-builder/SKILL.md)** — Steps, hazards per step, controls ranked by the hierarchy of controls, permits, stop-work triggers and a toolbox talk the foreman can read aloud. Works in: Claude · Claude Cowork · ChatGPT · Codex · any agent with Agent Skills. Zip: https://aibuilderacademy.netlify.app/downloads/skills/jha-builder.zip - **[Bid leveling (bid tab) line by line](https://aibuilderacademy.netlify.app/skills/bid-leveling/SKILL.md)** — Levels subcontractor bids against one scope sheet: arithmetic, exclusions, alternates, quantity deviations and unit-price outliers, labelled plugs, and leveled totals ranked. Works in: Claude Code · Claude Cowork · Codex · any agent that can run Python. Includes: scripts/bid_level.py. Zip: https://aibuilderacademy.netlify.app/downloads/skills/bid-leveling.zip - **[Earned value and S-curve](https://aibuilderacademy.netlify.app/skills/earned-value-s-curve/SKILL.md)** — CPI, SPI, earned schedule SPI(t), three EACs, TCPI and the S-curve from a periodic PV/EV/AC table, explained in plain words with the progress method stated. Works in: Claude Code · Claude Cowork · Codex · any agent that can run Python. Includes: scripts/evm.py. Zip: https://aibuilderacademy.netlify.app/downloads/skills/earned-value-s-curve.zip - **[Embodied carbon screening from quantities](https://aibuilderacademy.netlify.app/skills/embodied-carbon-estimate/SKILL.md)** — Multiplies quantities by emission factors the user provides (EPDs, EC3, national databases), ranks hotspots, compares alternatives and lists unmatched lines. No built-in factors. Works in: Claude Code · Claude Cowork · Codex · any agent that can run Python. Includes: scripts/carbon.py. Zip: https://aibuilderacademy.netlify.app/downloads/skills/embodied-carbon-estimate.zip - **[Pull planning session: prepare, facilitate, digitise](https://aibuilderacademy.netlify.app/skills/pull-planning-session/SKILL.md)** — Milestone and conditions of satisfaction, a facilitation script that works backwards through handoffs, visible buffers, and the wall turned into a phase schedule and constraint log. Works in: Claude · Claude Cowork · ChatGPT · Codex · any agent with Agent Skills. Zip: https://aibuilderacademy.netlify.app/downloads/skills/pull-planning-session.zip - **[Make-ready, constraint log and LPS metrics (PPC, TA, TMR)](https://aibuilderacademy.netlify.app/skills/make-ready-constraints/SKILL.md)** — Screens lookahead tasks for constraints and measures the planning system: PPC by week and trade, reasons Pareto, tasks anticipated, tasks made ready and constraint release reliability. Works in: Claude Code · Claude Cowork · Codex · any agent that can run Python. Includes: scripts/constraint_metrics.py. Zip: https://aibuilderacademy.netlify.app/downloads/skills/make-ready-constraints.zip - **[Takt plan with crews, train, dates and flowline](https://aibuilderacademy.netlify.app/skills/takt-planning/SKILL.md)** — From work content per zone and the user's productivity: takt time, crews needed per trade, imbalance, the takt train with calendar dates, buffers and a flowline chart. Works in: Claude Code · Claude Cowork · Codex · any agent that can run Python. Includes: scripts/takt_plan.py. Zip: https://aibuilderacademy.netlify.app/downloads/skills/takt-planning.zip - **[Target Value Delivery: design to a target cost](https://aibuilderacademy.netlify.app/skills/target-value-delivery/SKILL.md)** — Allowable and target cost from the business case, target split by cluster, estimate vs target at every cycle, ideas log and the gap to close, for IPD and collaborative teams. Works in: Claude · Claude Cowork · ChatGPT · Codex · any agent with Agent Skills. Zip: https://aibuilderacademy.netlify.app/downloads/skills/target-value-delivery.zip - **[Choosing By Advantages (CBA) decisions](https://aibuilderacademy.netlify.app/skills/choosing-by-advantages/SKILL.md)** — Facilitates a CBA decision: musts, factors, attributes as facts, advantages, importance anchored on the paramount advantage, cost weighed afterwards; a script checks and adds up the table. Works in: Claude Code · Claude Cowork · Codex · any agent that can run Python. Includes: scripts/cba.py. Zip: https://aibuilderacademy.netlify.app/downloads/skills/choosing-by-advantages.zip - **[A3 problem solving for recurring site problems](https://aibuilderacademy.netlify.app/skills/a3-problem-solving/SKILL.md)** — PDCA on one page: current condition with data, goal, 5 whys and fishbone with evidence, countermeasures with owners and the follow-up measurement. Works in: Claude · Claude Cowork · ChatGPT · Codex · any agent with Agent Skills. Zip: https://aibuilderacademy.netlify.app/downloads/skills/a3-problem-solving.zip - **[Gemba waste walk (8 wastes)](https://aibuilderacademy.netlify.app/skills/lean-waste-walk/SKILL.md)** — An observation checklist of the 8 wastes with site examples, then a waste log, a Pareto by type and location, and three small improvement experiments. Works in: Claude · Claude Cowork · ChatGPT · Codex · any agent with Agent Skills. Zip: https://aibuilderacademy.netlify.app/downloads/skills/lean-waste-walk.zip - **[Value stream map of a construction process](https://aibuilderacademy.netlify.app/skills/value-stream-map/SKILL.md)** — Lead time, value-added time, process cycle efficiency, bottleneck, rework yield and a Mermaid diagram for RFIs, submittals, payments or supply, with a current vs future state comparison. Works in: Claude Code · Claude Cowork · Codex · any agent that can run Python. Includes: scripts/vsm.py. Zip: https://aibuilderacademy.netlify.app/downloads/skills/value-stream-map.zip - **[VDC plan in the Stanford CIFE framework](https://aibuilderacademy.netlify.app/skills/vdc-implementation-plan/SKILL.md)** — Client objectives -> project objectives -> production metrics -> controllable factors, and how ICE, BIM and project production management move them, with a weekly dashboard. Works in: Claude · Claude Cowork · ChatGPT · Codex · any agent with Agent Skills. Zip: https://aibuilderacademy.netlify.app/downloads/skills/vdc-implementation-plan.zip - **[ICE session planner (Integrated Concurrent Engineering)](https://aibuilderacademy.netlify.app/skills/ice-session-planner/SKILL.md)** — Designs a session around the decisions it must close: who decides, agenda by topic, models to prepare, live decision log and latency metrics afterwards. Works in: Claude · Claude Cowork · ChatGPT · Codex · any agent with Agent Skills. Zip: https://aibuilderacademy.netlify.app/downloads/skills/ice-session-planner.zip - **[VDC maturity self-assessment (Planning, Adoption, Technology, Performance)](https://aibuilderacademy.netlify.app/skills/vdc-maturity-scorecard/SKILL.md)** — Evidence-based questions across the four areas used by CIFE's VDC Scorecard research, a five-tier reading, the three gaps that matter and a 90-day plan. Not an official score. Works in: Claude · Claude Cowork · ChatGPT · Codex · any agent with Agent Skills. Zip: https://aibuilderacademy.netlify.app/downloads/skills/vdc-maturity-scorecard.zip - **[ISO 19650 naming check for files and registers](https://aibuilderacademy.netlify.app/skills/iso19650-naming-check/SKILL.md)** — Checks container names against the project's field order and code lists, plus status and revision codes, and reports failures by field and by originator. Works in: Claude Code · Claude Cowork · Codex · any agent that can run Python. Includes: scripts/naming_check.py. Zip: https://aibuilderacademy.netlify.app/downloads/skills/iso19650-naming-check.zip - **[BIM execution plan (BEP) aligned with ISO 19650-2](https://aibuilderacademy.netlify.app/skills/bep-builder/SKILL.md)** — From the client's EIR to a BEP draft: requirements map, roles, model uses tied to goals, LOIN per milestone, MIDP/TIDP skeleton, CDE and naming, exchanges and QA, open decisions. Works in: Claude · Claude Cowork · ChatGPT · Codex · any agent with Agent Skills. Zip: https://aibuilderacademy.netlify.app/downloads/skills/bep-builder.zip And one that points any agent to this academy: https://aibuilderacademy.netlify.app/skill.md --- AI Builder Academy · https://aibuilderacademy.netlify.app · checked 2026-10-23 · Made by Lo que habitas (Julián Páez). Agents: search more at https://aibuilderacademy.netlify.app/api/search?q=… or connect https://aibuilderacademy.netlify.app/mcp. Request a new prompt: aibuilderacademy@agentmail.to.