ConstructionOnline API and MCP server Let your AI agent carry the jobsite paperwork.

ToolWhat it doesAccess

• manage_contacts List, add, edit or import contacts for clients, subs and vendors, or convert one to a lead. writeAsks first

  `get` also returns the contact's projects and history. Contact details can be public or private. By default you confirm each call; you can switch that off for this tool.

  MCP callconstructiononline_write → manage_contacts

  REST endpointPOST https://cotlet.dev/api/v1/constructiononline/contacts/manage

  Parameters

  Parameters: manage_contacts

  Name	Type	Description
  action string required	string	One of `list`, `get`, `create`, `update`, `import`, `convert_to_lead`. `list` and `get` only read.
  contact string	string	Contact name, for `get`, `update` and `convert_to_lead`.
  fields object	object	Name, company, email, phone, type; public or private details.
  file_url string	string	For `import`: the spreadsheet of contacts.

  Example input

  {
    "action": "action"
  }

  Example response

  {
    "contact": "Example Electric",
    "type": "Subcontractor",
    "email": "office@example.com",
    "projects": [
      "Hillcrest addition"
    ],
    "saved": true
  }

• manage_leads List, add or edit leads, change status or stage, and log calls and events. writeAsks first

  Leads move through the statuses, stages, types and sources you set in Lead Tracking. Events appear on the lead calendar by sales rep. By default you confirm each call; you can switch that off for this tool.

  MCP callconstructiononline_write → manage_leads

  REST endpointPOST https://cotlet.dev/api/v1/constructiononline/leads/manage

  Parameters

  Parameters: manage_leads

  Name	Type	Description
  action string required	string	One of `list`, `get`, `create`, `update`, `log_call`, `add_event`. `list` and `get` only read.
  lead string	string	Lead name, for `get` and the writes on one lead.
  fields object	object	Contact details, status, stage, type, source and sales rep.
  note string	string	For `log_call`: what was said. For `add_event`: the event title.
  date string	string	ISO date and time of the call or event.

  Example input

  {
    "action": "action"
  }

  Example response

  {
    "lead": "Example Homeowner, kitchen and deck",
    "stage": "Site visit",
    "source": "Website",
    "next_event": "2026-11-17T10:00",
    "saved": true
  }

• manage_opportunities List or create opportunities, attach an estimate, proposal or selections, or convert one to a project. writeAsks first

  Converting carries the opportunity into a project. A proposal is what the client reads, so the agent shows its content first. By default you confirm each call; you can switch that off for this tool.

  MCP callconstructiononline_write → manage_opportunities

  REST endpointPOST https://cotlet.dev/api/v1/constructiononline/opportunities/manage

  Parameters

  Parameters: manage_opportunities

  Name	Type	Description
  action string required	string	One of `list`, `get`, `create`, `add_estimate`, `create_proposal`, `convert_to_project`. `list` and `get` only read.
  opportunity string	string	Opportunity name or number.
  fields object	object	For `create`: client, address, type and expected value.

  Example input

  {
    "action": "action"
  }

  Example response

  {
    "opportunity": "OPP-118 Hillcrest addition",
    "stage": "Proposal",
    "estimate": "Addition, base scope",
    "converted": false
  }

• manage_projects List, open, create or update a project, from scratch or a template. writeAsks first

  Most tools take a project, so `list` is usually the first call. Adding company users to a project is part of `update`. By default you confirm each call; you can switch that off for this tool.

  MCP callconstructiononline_write → manage_projects

  REST endpointPOST https://cotlet.dev/api/v1/constructiononline/projects/manage

  Parameters

  Parameters: manage_projects

  Name	Type	Description
  action string required	string	One of `list`, `get`, `create`, `update`. `list` and `get` only read.
  project string	string	Project name or number, for `get` and `update`.
  template string	string	For `create`: a project template.
  fields object	object	Number, type, address, scope of work, currency, initial price, initial duration, cost code list, key roles, status, taxes.

  Example input

  {
    "action": "action"
  }

  Example response

  {
    "project": "Hillcrest addition",
    "number": "2026-014",
    "status": "In progress",
    "initial_price": 186000,
    "saved": true
  }

ToolWhat it doesAccess

• manage_costbooks List company costbooks, add or update items, or insert costbook items into an estimate. writeAsks first

  Costbook items must be enabled for estimates before they can be inserted. Archived costbooks can be activated again. By default you confirm each call; you can switch that off for this tool.

  MCP callconstructiononline_write → manage_costbooks

  REST endpointPOST https://cotlet.dev/api/v1/constructiononline/costbooks/manage

  Parameters

  Parameters: manage_costbooks

  Name	Type	Description
  action string required	string	One of `list`, `create`, `update`, `insert_into_estimate`, `archive`. `list` only reads.
  costbook string	string	Costbook name.
  items array	array	Item name, unit and cost.
  project string	string	For `insert_into_estimate`.

  Example input

  {
    "action": "action"
  }

  Example response

  {
    "costbook": "Residential 2026",
    "items": 214,
    "inserted": [
      {
        "item": "Framing lumber, 2x6",
        "unit": "lf",
        "cost": 1.85
      }
    ]
  }

• manage_takeoffs Read a project's Redline takeoff, start one, or send takeoff data to the estimate. writeAsks first

  The agent reads and moves takeoff data; it does not measure drawings. Measurements are made in Redline Takeoff on the plan sheets. By default you confirm each call; you can switch that off for this tool.

  MCP callconstructiononline_write → manage_takeoffs

  REST endpointPOST https://cotlet.dev/api/v1/constructiononline/takeoffs/manage

  Parameters

  Parameters: manage_takeoffs

  Name	Type	Description
  action string required	string	One of `get`, `start`, `send_to_estimate`. `get` only reads.
  project string required	string	Project name or number, as manage_projects `list` returns it.
  from string	string	For `start`: `scratch`, `estimate` or `template`.

  Example input

  {
    "action": "action",
    "project": "project"
  }

  Example response

  {
    "project": "Hillcrest addition",
    "takeoff": "Addition takeoff",
    "layers": [
      "Walls",
      "Roof"
    ],
    "sent_to_estimate": true
  }

• manage_estimates Read a project's OnCost estimate, or create one blank, from a template or from a Redline takeoff, and add items. writeAsks first

  Estimates group items in categories and subcategories, with company overhead and margin, item markup and tax settings. The agent shows you the lines and total before saving. By default you confirm each call; you can switch that off for this tool.

  MCP callconstructiononline_write → manage_estimates

  REST endpointPOST https://cotlet.dev/api/v1/constructiononline/estimates/manage

  Parameters

  Parameters: manage_estimates

  Name	Type	Description
  action string required	string	One of `get`, `create`, `add_items`, `set_status`. `list` and `get` only read.
  project string required	string	Project name or number, as manage_projects `list` returns it.
  source string	string	For `create`: `blank`, `template`, `excel` or `takeoff`.
  items array	array	Category, subcategory, item, quantity, unit cost, markup, tax and classification.
  status string	string	For `set_status`.

  Example input

  {
    "action": "action",
    "project": "project"
  }

  Example response

  {
    "project": "Hillcrest addition",
    "estimate": "Addition, base scope",
    "categories": 3,
    "total": 48650,
    "saved": true
  }

• manage_bids List bid packages, create one, add bidders, send invitations to bid, or record a bid for a bidder. writeAsks first

  `get` returns the bid sheet so you can compare submissions before you award work. Invitations reach people outside your company, so the agent lists recipients first. By default you confirm each call; you can switch that off for this tool.

  MCP callconstructiononline_write → manage_bids

  REST endpointPOST https://cotlet.dev/api/v1/constructiononline/bids/manage

  Parameters

  Parameters: manage_bids

  Name	Type	Description
  action string required	string	One of `list`, `get`, `create`, `add_bidders`, `send_invitations`, `enter_bid`. `list` and `get` only read.
  project string required	string	Project name or number, as manage_projects `list` returns it.
  package string	string	Bid package name.
  bidders array	array	Contacts invited to bid.
  amount number	number	For `enter_bid`: the bid received.

  Example input

  {
    "action": "action",
    "project": "project"
  }

  Example response

  {
    "project": "Hillcrest addition",
    "package": "Electrical rough-in",
    "bids": [
      {
        "bidder": "Example Electric",
        "amount": 14800
      },
      {
        "bidder": "Sample Sparks",
        "amount": 16250
      }
    ]
  }

• manage_purchase_orders List purchase orders, create one from an estimate, an approved change order or scratch, or email it. writeAsks first

  Purchasing in ConstructionOnline also tracks bills, expenses, receipts and payments. A purchase order commits money to a vendor, so the agent shows vendor, lines and total first. By default you confirm each call; you can switch that off for this tool.

  MCP callconstructiononline_write → manage_purchase_orders

  REST endpointPOST https://cotlet.dev/api/v1/constructiononline/purchase-orders/manage

  Parameters

  Parameters: manage_purchase_orders

  Name	Type	Description
  action string required	string	One of `list`, `get`, `create`, `set_approval`, `email`. `list` and `get` only read.
  project string required	string	Project name or number, as manage_projects `list` returns it.
  from string	string	For `create`: `estimate`, `change_order` or `scratch`.
  vendor string	string	Vendor contact.
  items array	array	Description, quantity and unit cost.

  Example input

  {
    "action": "action",
    "project": "project"
  }

  Example response

  {
    "project": "Hillcrest addition",
    "purchase_order": "PO-031",
    "vendor": "Example Lumber Co",
    "total": 9850,
    "approval": "Pending"
  }

ToolWhat it doesAccess

• manage_change_orders List a project's change orders, create one, or change its status. writeAsks first

  An approved change order can become a purchase order or an invoice. The agent shows you the lines before saving, because the change moves the contract value. By default you confirm each call; you can switch that off for this tool.

  MCP callconstructiononline_write → manage_change_orders

  REST endpointPOST https://cotlet.dev/api/v1/constructiononline/change-orders/manage

  Parameters

  Parameters: manage_change_orders

  Name	Type	Description
  action string required	string	One of `list`, `get`, `create`, `set_status`. `list` and `get` only read.
  project string required	string	Project name or number, as manage_projects `list` returns it.
  title string	string	Change order title.
  items array	array	Description, quantity and price per line.
  cost_code string	string	Cost code from the project's cost code list.
  estimate_subcategory string	string	Estimate subcategory to link to.
  status string	string	For `set_status`, from ConstructionOnline's change order statuses.

  Example input

  {
    "action": "action",
    "project": "project"
  }

  Example response

  {
    "project": "Hillcrest addition",
    "change_order": "CO-04 Add egress window",
    "total": 3200,
    "status": "Pending",
    "saved": true
  }

• manage_selections List client selections, add a category, selection or choice with allowance and due date, or send selections to the client. writeAsks first

  Client price follows the selection markup settings. `send` reaches your client. By default you confirm each call; you can switch that off for this tool.

  MCP callconstructiononline_write → manage_selections

  REST endpointPOST https://cotlet.dev/api/v1/constructiononline/selections/manage

  Parameters

  Parameters: manage_selections

  Name	Type	Description
  action string required	string	One of `list`, `add_category`, `add_selection`, `add_choice`, `send`. `list` and `get` only read.
  project string required	string	Project name or number, as manage_projects `list` returns it.
  category string	string	Selections category, for example Kitchen.
  selection string	string	For example Cabinet hardware.
  choice object	object	Name, vendor, client price, image and attachments.
  allowance number	number	Allowance for the selection.
  due string	string	ISO due date.

  Example input

  {
    "action": "action",
    "project": "project"
  }

  Example response

  {
    "project": "Hillcrest addition",
    "selection": "Window style",
    "allowance": 4200,
    "choices": 3,
    "due": "2026-11-27"
  }

• manage_invoices List invoices, create one from the estimate or an approved change order, email it or record a payment. writeAsks first

  Creating and emailing are separate calls, so you read the invoice before it goes out. An emailed invoice has reached your client. By default you confirm each call; you can switch that off for this tool.

  MCP callconstructiononline_write → manage_invoices

  REST endpointPOST https://cotlet.dev/api/v1/constructiononline/invoices/manage

  Parameters

  Parameters: manage_invoices

  Name	Type	Description
  action string required	string	One of `list`, `get`, `create`, `email`, `record_payment`. `list` and `get` only read.
  project string required	string	Project name or number, as manage_projects `list` returns it.
  from string	string	For `create`: `estimate` or `change_order`.
  invoice string	string	Invoice number, for `get`, `email` and `record_payment`.
  amount number	number	For `record_payment`.

  Example input

  {
    "action": "action",
    "project": "project"
  }

  Example response

  {
    "project": "Hillcrest addition",
    "invoice": "INV-1042",
    "total": 3200,
    "status": "Draft",
    "emailed": false
  }

• manage_payment_applications List payment applications, create one from project financials, or email or export it, also on AIA forms. writeAsks first

  Payment applications are built from the project's existing financial data for progress billing. Emailing reaches your client. By default you confirm each call; you can switch that off for this tool.

  MCP callconstructiononline_write → manage_payment_applications

  REST endpointPOST https://cotlet.dev/api/v1/constructiononline/payment-applications/manage

  Parameters

  Parameters: manage_payment_applications

  Name	Type	Description
  action string required	string	One of `list`, `get`, `create`, `email`, `export`. `list` and `get` only read.
  project string required	string	Project name or number, as manage_projects `list` returns it.
  period_end string	string	ISO date the application covers up to.
  format string	string	For `export`: `pdf` or `aia`.

  Example input

  {
    "action": "action",
    "project": "project"
  }

  Example response

  {
    "project": "Hillcrest addition",
    "application": "Pay App 3",
    "period_end": "2026-11-30",
    "this_period": 28400
  }

ToolWhat it doesAccess

• manage_schedule Read a project schedule, create one blank, from a template or an estimate, or add tasks, predecessors and milestones. writeAsks first

  Workdays and observed holidays shape the dates. Predecessors move dependent tasks, so the agent tells you which tasks a change shifts. By default you confirm each call; you can switch that off for this tool.

  MCP callconstructiononline_write → manage_schedule

  REST endpointPOST https://cotlet.dev/api/v1/constructiononline/schedule/manage

  Parameters

  Parameters: manage_schedule

  Name	Type	Description
  action string required	string	One of `get`, `create`, `add_task`, `update_task`, `add_milestone`. `get` only reads.
  project string required	string	Project name or number, as manage_projects `list` returns it.
  source string	string	For `create`: `blank`, `template`, `estimate` or `ms_project`.
  task object	object	Name, group, start, duration, predecessors, resource, notes, ASAP flag.

  Example input

  {
    "action": "action",
    "project": "project"
  }

  Example response

  {
    "project": "Hillcrest addition",
    "task": "Frame walls",
    "start": "2026-11-18",
    "duration_days": 4,
    "predecessors": [
      "Pour footings"
    ],
    "saved": true
  }

• manage_calendar Read a project or company calendar, or create, edit or delete an event. writeAsks first

  Calendars can sync to Google or Outlook through ConstructionOnline's own settings, which no tool changes. By default you confirm each call; you can switch that off for this tool.

  MCP callconstructiononline_write → manage_calendar

  REST endpointPOST https://cotlet.dev/api/v1/constructiononline/calendar/manage

  Parameters

  Parameters: manage_calendar

  Name	Type	Description
  action string required	string	One of `list`, `create`, `update`, `delete`. `list` only reads.
  project string	string	Leave empty for the company calendar.
  event object	object	Title, start, end, calendar, cost code.

  Example input

  {
    "action": "action"
  }

  Example response

  {
    "project": "Hillcrest addition",
    "event": "Framing inspection",
    "start": "2026-11-24T09:00",
    "saved": true
  }

• manage_todos List a project's to dos, create one with subtasks, or update its stage, priority and due date. writeAsks first

  Assigned resources see the to do on their list. Private to dos stay with you. By default you confirm each call; you can switch that off for this tool.

  MCP callconstructiononline_write → manage_todos

  REST endpointPOST https://cotlet.dev/api/v1/constructiononline/todos/manage

  Parameters

  Parameters: manage_todos

  Name	Type	Description
  action string required	string	One of `list`, `create`, `update`. `list` and `get` only read.
  project string required	string	Project name or number, as manage_projects `list` returns it.
  title string	string	To do title.
  fields object	object	Due date, priority, resources, trade, type, category, stage, tags, cost impact, linked schedule task.

  Example input

  {
    "action": "action",
    "project": "project"
  }

  Example response

  {
    "project": "Hillcrest addition",
    "todo": "Confirm window delivery",
    "due": "2026-11-19",
    "priority": "High",
    "stage": "Open",
    "saved": true
  }

• manage_gameplan Read your GamePlan, create a Quick GamePlan, or set up a GamePlan email. writeAsks first

  GamePlan compiles each person's key activities across ConstructionOnline into one automated list. By default you confirm each call; you can switch that off for this tool.

  MCP callconstructiononline_write → manage_gameplan

  REST endpointPOST https://cotlet.dev/api/v1/constructiononline/gameplan/manage

  Parameters

  Parameters: manage_gameplan

  Name	Type	Description
  action string required	string	One of `get`, `create_quick`, `create_email`. `get` only reads.
  user string	string	Company user the GamePlan is for.

  Example input

  {
    "action": "action"
  }

  Example response

  {
    "user": "Project manager",
    "items": [
      {
        "type": "To do",
        "title": "Confirm window delivery",
        "due": "2026-11-19"
      },
      {
        "type": "RFI",
        "title": "RFI-07 Header size",
        "due": "2026-11-18"
      }
    ]
  }

• manage_daily_logs Read a project's daily logs, add one, or export hours from work logs. writeAsks first

  Weather tracking fills in the day's weather when it is enabled. The agent writes only what you gave it. By default you confirm each call; you can switch that off for this tool.

  MCP callconstructiononline_write → manage_daily_logs

  REST endpointPOST https://cotlet.dev/api/v1/constructiononline/daily-logs/manage

  Parameters

  Parameters: manage_daily_logs

  Name	Type	Description
  action string required	string	One of `list`, `create`, `export_hours`. `list` and `export_hours` only read.
  project string required	string	Project name or number, as manage_projects `list` returns it.
  type string	string	Daily log type, or one of your custom logs.
  date string	string	ISO date.
  notes string	string	What happened on site, in your words.
  cost_code string	string	Cost code from the project's cost code list.

  Example input

  {
    "action": "action",
    "project": "project"
  }

  Example response

  {
    "project": "Hillcrest addition",
    "date": "2026-11-13",
    "type": "Work log",
    "notes": "Footings poured, inspection passed.",
    "saved": true
  }

• manage_checklists Read or create a checklist or punch list, add items and issues, or mark them complete. writeAsks first

  Both lists track items, item issues, assigned resources and progress, and can be signed and shared from ConstructionOnline. By default you confirm each call; you can switch that off for this tool.

  MCP callconstructiononline_write → manage_checklists

  REST endpointPOST https://cotlet.dev/api/v1/constructiononline/checklists/manage

  Parameters

  Parameters: manage_checklists

  Name	Type	Description
  action string required	string	One of `list`, `get`, `create`, `add_item`, `complete_item`. `list` and `get` only read.
  project string required	string	Project name or number, as manage_projects `list` returns it.
  kind string required	string	`checklist` or `punch_list`.
  list string	string	Name of the checklist or punch list.
  item object	object	Item, issue, assigned resource, cost code.

  Example input

  {
    "action": "action",
    "project": "project",
    "kind": "kind"
  }

  Example response

  {
    "project": "Hillcrest addition",
    "kind": "punch_list",
    "list": "Final walk",
    "items": 14,
    "complete": 9
  }

• manage_time Read time sheets, add time entries, or edit a time sheet. writeAsks first

  Hours feed the employee and project time summaries, so each entry waits for your OK. Clock-in requirements and geofencing stay as set in ConstructionOnline. By default you confirm each call; you can switch that off for this tool.

  MCP callconstructiononline_write → manage_time

  REST endpointPOST https://cotlet.dev/api/v1/constructiononline/time/manage

  Parameters

  Parameters: manage_time

  Name	Type	Description
  action string required	string	One of `list`, `add_entry`, `edit`. `list` and `get` only read.
  employee string	string	Company user.
  project string	string	Project the time is for.
  date string	string	ISO date.
  hours number	number	Hours worked.

  Example input

  {
    "action": "action"
  }

  Example response

  {
    "employee": "Carpenter A",
    "project": "Hillcrest addition",
    "date": "2026-11-13",
    "hours": 8,
    "saved": true
  }

• manage_files List a project's folders and albums, upload files or photos, or make a folder. writeAsks first

  Folders and albums can be private. Deleted files can be restored in ConstructionOnline. By default you confirm each call; you can switch that off for this tool.

  MCP callconstructiononline_write → manage_files

  REST endpointPOST https://cotlet.dev/api/v1/constructiononline/files/manage

  Parameters

  Parameters: manage_files

  Name	Type	Description
  action string required	string	One of `list`, `upload_files`, `upload_photos`, `create_folder`. `list` only reads.
  project string required	string	Project name or number, as manage_projects `list` returns it.
  folder string	string	Folder or album name.
  file_urls array	array	Links the Cloud Browser downloads attachments from.

  Example input

  {
    "action": "action",
    "project": "project"
  }

  Example response

  {
    "project": "Hillcrest addition",
    "album": "Footings",
    "uploaded": 6
  }

ToolWhat it doesAccess

• manage_rfis List RFIs, create or resend one, or mark it resolved. writeAsks first

  An RFI goes to the people you name, so the agent shows the question and recipients first. By default you confirm each call; you can switch that off for this tool.

  MCP callconstructiononline_write → manage_rfis

  REST endpointPOST https://cotlet.dev/api/v1/constructiononline/rfis/manage

  Parameters

  Parameters: manage_rfis

  Name	Type	Description
  action string required	string	One of `list`, `get`, `create`, `resend`, `resolve`. `list` and `get` only read.
  project string required	string	Project name or number, as manage_projects `list` returns it.
  rfi string	string	RFI number or subject.
  question string	string	For `create`.
  to array	array	Who answers.
  cost_code string	string	Cost code from the project's cost code list.

  Example input

  {
    "action": "create",
    "project": "Hillcrest addition",
    "question": "Confirm header size at the new 6 ft opening on sheet S-201.",
    "to": [
      "Example Engineering"
    ]
  }

  Example response

  {
    "project": "Hillcrest addition",
    "rfi": "RFI-07 Header size at new opening",
    "status": "Open",
    "sent_to": [
      "Example Engineering"
    ]
  }

• manage_submittals List submittals, create one with files, email it, respond, close it or add a revision. writeAsks first

  Emailing sends the submittal to its reviewers. The summary can be exported to Excel. By default you confirm each call; you can switch that off for this tool.

  MCP callconstructiononline_write → manage_submittals

  REST endpointPOST https://cotlet.dev/api/v1/constructiononline/submittals/manage

  Parameters

  Parameters: manage_submittals

  Name	Type	Description
  action string required	string	One of `list`, `get`, `create`, `email`, `respond`, `close`, `revise`. `list` and `get` only read.
  project string required	string	Project name or number, as manage_projects `list` returns it.
  submittal string	string	Submittal number or title.
  file_urls array	array	Links the Cloud Browser downloads attachments from.
  response string	string	For `respond`.

  Example input

  {
    "action": "action",
    "project": "project"
  }

  Example response

  {
    "project": "Hillcrest addition",
    "submittal": "SUB-05 Window product data",
    "status": "Open",
    "revision": 0
  }

• manage_transmittals List transmittals, create one with files and a letter of transmittal, or email it. writeAsks first

  A transmittal is the formal record of what you sent to whom. Emailing reaches the recipients. By default you confirm each call; you can switch that off for this tool.

  MCP callconstructiononline_write → manage_transmittals

  REST endpointPOST https://cotlet.dev/api/v1/constructiononline/transmittals/manage

  Parameters

  Parameters: manage_transmittals

  Name	Type	Description
  action string required	string	One of `list`, `get`, `create`, `email`. `list` and `get` only read.
  project string required	string	Project name or number, as manage_projects `list` returns it.
  subject string	string	What is transmitted.
  to array	array	Recipients.
  file_urls array	array	Links the Cloud Browser downloads attachments from.

  Example input

  {
    "action": "action",
    "project": "project"
  }

  Example response

  {
    "project": "Hillcrest addition",
    "transmittal": "TR-12 Revised framing plans",
    "to": [
      "Example Framing"
    ],
    "emailed": false
  }

• manage_meetings List meetings, create one, send invitations, record minutes or add action items. writeAsks first

  Meetings run in Agenda mode and Minutes mode and can start from a template. Invitations reach attendees. By default you confirm each call; you can switch that off for this tool.

  MCP callconstructiononline_write → manage_meetings

  REST endpointPOST https://cotlet.dev/api/v1/constructiononline/meetings/manage

  Parameters

  Parameters: manage_meetings

  Name	Type	Description
  action string required	string	One of `list`, `create`, `send_invitations`, `record_minutes`, `add_action_item`. `list` and `get` only read.
  project string required	string	Project name or number, as manage_projects `list` returns it.
  meeting string	string	Meeting title.
  attendees array	array	Contacts invited.
  notes string	string	Agenda or minutes.

  Example input

  {
    "action": "action",
    "project": "project"
  }

  Example response

  {
    "project": "Hillcrest addition",
    "meeting": "Weekly OAC meeting",
    "attendees": 5,
    "action_items": 3
  }

• manage_chat Open your Envoy chats, start a chat or project channel, or send a message. writeAsks first

  Envoy Chat is ConstructionOnline's instant messaging for project teams. Messages reach people at once, so each one waits for your OK. By default you confirm each call; you can switch that off for this tool.

  MCP callconstructiononline_write → manage_chat

  REST endpointPOST https://cotlet.dev/api/v1/constructiononline/chat/manage

  Parameters

  Parameters: manage_chat

  Name	Type	Description
  action string required	string	One of `list`, `create_chat`, `create_channel`, `send`. `list` and `get` only read.
  chat string	string	Chat or channel name.
  members array	array	For a new chat or channel.
  message string	string	For `send`.

  Example input

  {
    "action": "action"
  }

  Example response

  {
    "chat": "Hillcrest addition",
    "message": "Inspection passed, framing starts Tuesday.",
    "sent": true
  }

ToolWhat it doesAccess

• manage_warranties List warranties and service requests, add a warranty issue, or schedule a service appointment. writeAsks first

  Warranties keep each item's service history from request to completion. A service appointment involves the homeowner, so it waits for your OK. By default you confirm each call; you can switch that off for this tool.

  MCP callconstructiononline_write → manage_warranties

  REST endpointPOST https://cotlet.dev/api/v1/constructiononline/warranties/manage

  Parameters

  Parameters: manage_warranties

  Name	Type	Description
  action string required	string	One of `list`, `get`, `create`, `add_issue`, `schedule_service`. `list` and `get` only read.
  project string required	string	Project name or number, as manage_projects `list` returns it.
  issue string	string	What needs service.
  appointment string	string	For `schedule_service`: ISO date and time.

  Example input

  {
    "action": "action",
    "project": "project"
  }

  Example response

  {
    "project": "Maple Court new build",
    "issue": "Sticking patio door",
    "appointment": "2026-11-20T08:00",
    "status": "Scheduled"
  }

• manage_compliance List permits, insurance policies, licenses, bonds and certifications with expirations, or add and update one. writeAsks first

  Permits are tracked across all projects; insurance and certificates are tracked for expirations. `list` is the quick way to see what expires soon. By default you confirm each call; you can switch that off for this tool.

  MCP callconstructiononline_write → manage_compliance

  REST endpointPOST https://cotlet.dev/api/v1/constructiononline/compliance/manage

  Parameters

  Parameters: manage_compliance

  Name	Type	Description
  action string required	string	One of `list`, `create`, `update`, `archive`. `list` and `get` only read.
  kind string required	string	`permit`, `insurance`, `license`, `bond` or `certification`.
  record object	object	Name, number, holder or project, issue and expiry dates.

  Example input

  {
    "action": "action",
    "kind": "kind"
  }

  Example response

  {
    "kind": "insurance",
    "records": [
      {
        "holder": "Example Electric",
        "policy": "General liability",
        "expires": "2026-12-01"
      }
    ]
  }

• view_truevision Read a TrueVision dashboard: Sales, Project Health Scorecards, Financial, WIP, Multi-Project Scheduling or ResourceTrak. read

  TrueVision is ConstructionOnline's business intelligence view over sales, project health, financials, scheduling and resources. The tool returns what the dashboard shows your user, as text. Nothing is changed.

  MCP callconstructiononline_read → view_truevision

  REST endpointGET https://cotlet.dev/api/v1/constructiononline/truevisions/view

  Parameters

  Parameters: view_truevision

  Name	Type	Description
  dashboard string required	string	`sales`, `project_health`, `financial`, `wip`, `multi_project_schedule` or `resourcetrak`.
  project string	string	Narrow to one project where the dashboard allows it.

  Example input

  {
    "dashboard": "dashboard"
  }

  Example response

  {
    "dashboard": "wip",
    "projects": [
      {
        "project": "Hillcrest addition",
        "contract": 186000,
        "billed": 92000,
        "percent_complete": 52
      }
    ]
  }

• create_report Build a print-ready ConstructionOnline report, such as opportunities, leads, RFI summary or time summary. read

  Reports carry your company logo or letterhead and header and footer settings from Company Reporting. The agent returns the report; saving it into ConstructionOnline is a separate choice in the app.

  MCP callconstructiononline_read → create_report

  REST endpointGET https://cotlet.dev/api/v1/constructiononline/reports/create

  Parameters

  Parameters: create_report

  Name	Type	Description
  report string required	string	`opportunities`, `leads`, `rfi_summary`, `submittal_summary`, `employee_time` or `project_time`.
  project string	string	For project reports.
  from string	string	ISO date.
  to string	string	ISO date.

  Example input

  {
    "report": "report"
  }

  Example response

  {
    "report": "rfi_summary",
    "project": "Hillcrest addition",
    "open": 2,
    "resolved": 9
  }

• view_redline_planroom List a project's Redline Planroom sheets, their revisions, markups and comments. read

  Returns sheet information, revisions, pinned items, assigned contacts and comments as text. It does not draw markups or measure.

  MCP callconstructiononline_read → view_redline_planroom

  REST endpointGET https://cotlet.dev/api/v1/constructiononline/redline-planrooms/view

  Parameters

  Parameters: view_redline_planroom

  Name	Type	Description
  project string required	string	Project name or number, as manage_projects `list` returns it.
  sheet string	string	Sheet name or number; leave empty for the list.

  Example input

  {
    "project": "project"
  }

  Example response

  {
    "project": "Hillcrest addition",
    "sheets": [
      {
        "sheet": "A-101 Floor plan",
        "revision": "Rev 2",
        "comments": 3
      },
      {
        "sheet": "S-201 Framing",
        "revision": "Rev 1",
        "comments": 0
      }
    ]
  }