HuskyBIM for Sigma Estimates
HuskyBIM for Sigma Estimates connects Claude Desktop to Sigma Estimates through a COM bridge. With 103 tools covering project management, tree navigation, item read/write, bulk editing, analytics and export — all via plain language, without manual navigation.
Requirements
• Sigma Estimates — any recent version running on Windows
• Windows 10 or Windows 11 (64-bit)
• Claude Desktop — download at claude.ai/download
• Active HuskyBIM subscription — see pricing
Installation
Download the extension
Sign in to your account page and download HuskyBIM_for_Sigma_v1.1.0.mcpb from the Downloads section.
Install in Claude Desktop
Open Claude Desktop. Go to Settings → Extensions and click Install extension. Select the downloaded .mcpb file, or drag and drop it onto the Extensions panel.
Enter your extension token
In the HuskyBIM Sigma Estimates extension settings, enter your extension token. Find your token at huskybim.com/account under Extension Token.
Open Sigma Estimates and start
Open Sigma Estimates with a project loaded. Return to Claude Desktop — the HuskyBIM for Sigma Estimates tools will be active and ready.
What you can do
HuskyBIM for Sigma Estimates provides 103 tools covering the full estimate workflow — from reading the structure to bulk editing, analytics and export.
sigma_get_active_project — active project infosigma_list_projects — all open projectssigma_set_project_name — rename projectsigma_switch_project — change active projectsigma_check_project_open — check if project opensigma_get_project_statistics — aggregate statssigma_get_sigma_version — app versionsigma_get_server_info — bridge infosigma_get_estimate_tree — full hierarchysigma_get_chapter — single chaptersigma_get_chapter_deep — chapter + all descendantssigma_get_root_chapters — top-level chapterssigma_get_all_leaf_items — all line items flatsigma_get_all_chapters — all headings flatsigma_get_items_at_level — items at depth Nsigma_get_item_by_number — lookup by numbersigma_get_item_children — direct childrensigma_get_chapter_path — breadcrumb pathsigma_get_item_values — all field valuessigma_get_item_text — descriptionsigma_get_item_number — number/codesigma_get_item_quantity — quantitysigma_get_item_unit — unit of measuresigma_get_item_unit_price — unit pricesigma_get_item_sales_price — total pricesigma_get_item_note — note/commentsigma_get_item_category — categorysigma_get_item_count_in_chapter — child countsigma_set_item_note — set notesigma_set_item_text — change descriptionsigma_set_item_quantity — update quantitysigma_set_item_category — set categorysigma_set_item_number — change number/codesigma_set_item_unit — change unitsigma_set_item_unit_price — change unit pricesigma_set_chapter_name — rename chaptersigma_append_to_note — append to notesigma_clear_item_note — clear notesigma_copy_field_between_items — copy fieldsigma_bulk_set_note_in_chapter — set note on all items in chaptersigma_bulk_append_to_notes — append to all matching notessigma_bulk_clear_notes — clear all notes in chaptersigma_bulk_set_category_in_chapter — set category on allsigma_bulk_set_unit_in_chapter — set unit on allsigma_bulk_scale_quantities — multiply quantities by factorsigma_bulk_update_note_by_text — note items matching textsigma_replace_text_in_chapter — find & replace in descriptionssigma_find_items — by text or numbersigma_find_items_by_category — by categorysigma_find_items_by_unit — by unitsigma_find_items_by_quantity_range — qty rangesigma_find_items_by_price_range — price rangesigma_find_items_with_note — items with notesigma_find_items_without_note — items without notesigma_find_items_with_zero_quantity — zero quantitysigma_find_items_missing_unit — no unit setsigma_find_duplicate_numbers — duplicate codessigma_find_chapters_by_name — search chapterssigma_find_items_above_price — above thresholdsigma_find_items_in_chapter — all items in chaptersigma_find_items_by_number_prefix — by code prefixsigma_find_headings_only — chapters onlysigma_find_items_with_text_and_category — combined filtersigma_find_items_with_long_note — long notessigma_find_items_by_text_regex — regex searchsigma_get_chapter_summary — chapter totalssigma_get_totals — grand totalsigma_count_items — item countssigma_get_category_breakdown — cost by categorysigma_get_unit_summary — units usedsigma_get_top_chapters_by_cost — highest-cost chapterssigma_get_cost_distribution — % of total per chaptersigma_get_quantity_stats — min/max/avg quantitysigma_get_chapter_price_breakdown — chapter detailsigma_get_note_coverage — note coverage %sigma_get_items_above_threshold — expensive itemssigma_get_items_below_threshold — cheap itemssigma_get_chapter_item_counts — items per chaptersigma_get_missing_data_report — missing fieldssigma_get_qa_report — quality assurancesigma_get_estimate_at_a_glance — one-page overviewsigma_compare_chapters — side-by-side comparesigma_get_cost_per_unit_summary — cost per unitsigma_get_category_totals_by_chapter — matrix viewsigma_get_price_outliers — price outlierssigma_get_items_sorted_by_price — by pricesigma_get_items_sorted_by_quantity — by quantitysigma_export_chapter_as_csv — chapter as CSVsigma_export_estimate_as_csv — full estimate as CSVsigma_get_chapter_as_markdown_table — Markdown tablesigma_get_estimate_as_markdown_table — full Markdownsigma_get_items_as_json — JSON exportsigma_get_chapter_text_report — text reportsigma_get_cost_summary_formatted — formatted summarysigma_get_printable_estimate — printable documentsigma_get_items_summary_table — compact tablesigma_get_chapter_numbers_list — all item codessigma_get_all_units_list — all unitssigma_get_all_categories_list — all categoriessigma_save_project — save projectExample workflows
Give me a summary of all chapters in the active project — name, number and total sales price for each.Find all line items containing "beton" and show their current quantities and units.Add the note "Verify with structural engineer" to all items in chapter 3 with a quantity above 50.What is the total sales price for the project, and which chapter has the highest cost?Troubleshooting
Ensure Sigma Estimates is running with a project open before making calls. The COM bridge starts when Claude Desktop activates the extension — if Sigma was not open at that point, restart Claude Desktop after opening Sigma.
Check that your extension token is correctly entered in Claude Desktop → Settings → Extensions → HuskyBIM Sigma Estimates. Tokens are case-sensitive and must not contain spaces. Find your token at huskybim.com/account.
If the extension does not appear after installation, ensure you are using Claude Desktop (not the web app). Go to Settings → Extensions and verify the extension is enabled. Re-install the .mcpb file if needed.