Dry Run

{
  "mcpServers": {
    "com.modernmustardseed/dry-run": {
      "url": "https://mcp.modernmustardseed.com/dry-run"
    }
  }
}

Indexed tools

Tool metadata and schemas come from the remote server and are untrusted. Indexing only lists tools; it never calls them.

3 shown · authentication unknown

• List presets

  list_presets

  List the six built-in business presets (excavation and septic, plumbing and drain, heating and cooling, landscaping and snow, roofing, and a general small services business) with every default input in the exact field names a simulation accepts, and the revenue, costs and profit each makes at its own averages. Static reference: no network access.

  Schema valid · SHA-256 3ad356080268…

  View input schema

  {
    "type": "object",
    "properties": {},
    "$schema": "https://json-schema.org/draft/2020-12/schema"
  }

• Rank levers

  rank_levers

  Test nine single changes a small business owner can make and rank them by how much each lowers the chance of running short of money in the next 52 weeks, with the change in year-end money as a tiebreak. The levers: take a third up front, take 15 days off payment terms, raise prices 5 percent, take a fifth less owner draw for six months, cut overhead 10 percent, raise the credit line by half, run one crew lighter, add a crew, and buy three more enquiries a week. Each lever and the baseline run 3,000 simulated years with the same seed, so the difference is the lever and not the luck. Takes the same business description as a cash year simulation: a preset plus any overridden inputs. Pure arithmetic: no network access, nothing stored.

  Schema valid · SHA-256 09284d35c4ac…

  View input schema

  {
    "type": "object",
    "properties": {
      "preset": {
        "default": "general",
        "description": "Starting template: excavation, plumbing, hvac, landscaping, roofing, or general for any other small services business. Every field below overrides it. Default general.",
        "type": "string",
        "enum": [
          "excavation",
          "plumbing",
          "hvac",
          "landscaping",
          "roofing",
          "general"
        ]
      },
      "name": {
        "description": "Business name, used only to label the result.",
        "type": "string",
        "maxLength": 120
      },
      "start_cash": {
        "description": "Money in the bank on the day the year starts, in dollars.",
        "type": "number",
        "minimum": -10000000,
        "maximum": 100000000
      },
      "credit_line": {
        "description": "Size of the line of credit, in dollars. 0 for none.",
        "type": "number",
        "minimum": 0,
        "maximum": 100000000
      },
      "credit_drawn": {
        "description": "How much of the line is already drawn, in dollars.",
        "type": "number",
        "minimum": 0,
        "maximum": 100000000
      },
      "credit_apr": {
        "description": "Annual interest on the drawn balance, as a fraction. 0.11 is 11 percent.",
        "type": "number",
        "minimum": 0,
        "maximum": 0.6
      },
      "opening_receivables": {
        "description": "Work already invoiced and not yet paid on day one, in dollars.",
        "type": "number",
        "minimum": 0,
        "maximum": 100000000
      },
      "opening_backlog_weeks": {
        "description": "Crew-weeks of work already sold and waiting to start.",
        "type": "number",
        "minimum": 0,
        "maximum": 104
      },
      "crews": {
        "description": "Crews (or technicians, or production units) working in parallel. One crew delivers one crew-week a week.",
        "type": "integer",
        "minimum": 1,
        "maximum": 50
      },
      "crew_cost_weekly": {
        "description": "Fully loaded weekly cost of one crew: wages, burden, fuel, vehicle.",
        "type": "number",
        "minimum": 0,
        "maximum": 1000000
      },
      "overhead_weekly": {
        "description": "Weekly overhead that runs whether or not anyone works: office, software, admin wages.",
        "type": "number",
        "minimum": 0,
        "maximum": 1000000
      },
      "owner_draw_weekly": {
        "description": "What the owner takes out each week.",
        "type": "number",
        "minimum": 0,
        "maximum": 1000000
      },
      "fixed_costs": {
        "description": "Monthly fixed bills such as rent, insurance and equipment notes. Replaces the preset list.",
        "maxItems": 20,
        "type": "array",
        "items": {
          "type": "object",
          "properties": {
            "label": {
              "type": "string",
              "minLength": 1,
              "maxLength": 60
            },
            "amount": {
              "type": "number",
              "minimum": 0,
              "maximum": 10000000,
              "description": "Monthly amount in dollars."
            },
            "day": {
              "type": "integer",
              "minimum": 1,
              "maximum": 28,
              "description": "Day of the month it leaves the account, 1 to 28."
            }
          },
          "required": [
            "label",
            "amount",
            "day"
          ]
        }
      },
      "leads_per_week": {
        "description": "Enquiries in an average week before seasonality.",
        "type": "number",
        "minimum": 0,
        "maximum": 500
      },
      "leads_cv": {
        "description": "Week to week spread of enquiries. Default 0.35.",
        "type": "number",
        "minimum": 0.01,
        "maximum": 2
      },
      "close_rate": {
        "description": "Share of enquiries that become jobs, as a fraction.",
        "type": "number",
        "minimum": 0.01,
        "maximum": 1
      },
      "seasonality": {
        "description": "Twelve multipliers on enquiry volume, January first. 1 is an average month.",
        "minItems": 12,
        "maxItems": 12,
        "type": "array",
        "items": {
          "type": "number",
          "minimum": 0,
          "maximum": 5
        }
      },
      "job_types": {
        "description": "The kinds of work sold. Replaces the preset list.",
        "minItems": 1,
        "maxItems": 12,
        "type": "array",
        "items": {
          "type": "object",
          "properties": {
            "name": {
              "type": "string",
              "minLength": 1,
              "maxLength": 60,
              "description": "What the job is called, for example \"Service call\"."
            },
            "share": {
              "type": "number",
              "minimum": 0,
              "maximum": 1000,
              "description": "Relative share of jobs won that are this kind. Shares are normalised, so 6 and 2 means three of these for every one of the other."
            },
            "value": {
              "type": "number",
              "minimum": 1,
              "maximum": 10000000,
              "description": "Average invoice for this job, in dollars."
            },
            "value_cv": {
              "default": 0.4,
              "description": "Spread of the invoice, 0.4 means give or take 40 percent. Default 0.4.",
              "type": "number",
              "minimum": 0.01,
              "maximum": 2
            },
            "crew_weeks": {
              "type": "number",
              "minimum": 0.01,
              "maximum": 200,
              "description": "Crew-weeks of capacity one job uses. 0.5 is half a crew for a week."
            },
            "crew_weeks_cv": {
              "default": 0.3,
              "description": "Spread of the work per job. Default 0.3.",
              "type": "number",
              "minimum": 0.01,
              "maximum": 2
            },
            "materials_pct": {
              "type": "number",
              "minimum": 0,
              "maximum": 0.95,
              "description": "Materials and subcontractors as a fraction of the invoice, paid when the job starts."
            },
            "deposit_pct": {
              "type": "number",
              "minimum": 0,
              "maximum": 1,
              "description": "Deposit taken when the job is won, as a fraction of the invoice. 1 means paid in full up front."
            },
            "terms_days": {
              "type": "number",
              "minimum": 0,
              "maximum": 180,
              "description": "Average days until the balance is paid after the job is done. 0 means paid on completion."
            }
          },
          "required": [
            "name",
            "share",
            "value",
            "crew_weeks",
            "materials_pct",
            "deposit_pct",
            "terms_days"
          ]
        }
      },
      "collection_shape": {
        "description": "How disciplined customers are about paying on time: 2 is ragged with a long tail of late payers, 6 is disciplined.",
        "type": "number",
        "minimum": 0.5,
        "maximum": 20
      },
      "bad_debt_rate": {
        "description": "Share of invoiced balances never collected, as a fraction.",
        "type": "number",
        "minimum": 0,
        "maximum": 0.5
      },
      "tax_rate": {
        "description": "Share of profit set aside for tax, paid quarterly.",
        "type": "number",
        "minimum": 0,
        "maximum": 0.6
      },
      "surprises": {
        "description": "Random setbacks such as a machine breakdown or someone quitting. Replaces the preset list.",
        "maxItems": 12,
        "type": "array",
        "items": {
          "type": "object",
          "properties": {
            "label": {
              "type": "string",
              "minLength": 1,
              "maxLength": 60
            },
            "weekly_prob": {
              "type": "number",
              "minimum": 0,
              "maximum": 1,
              "description": "Chance it happens in any given week, for example 0.03."
            },
            "cost": {
              "type": "number",
              "minimum": 0,
              "maximum": 10000000,
              "description": "What it costs each time, in dollars."
            },
            "capacity_loss": {
              "type": "number",
              "minimum": 0,
              "maximum": 50,
              "description": "Crew-weeks of capacity lost each time it happens."
            }
          },
          "required": [
            "label",
            "weekly_prob",
            "cost",
            "capacity_loss"
          ]
        }
      },
      "start_month": {
        "description": "Month the simulated year starts, 1 for January. Default: the current month.",
        "type": "integer",
        "minimum": 1,
        "maximum": 12
      },
      "seed": {
        "description": "Seed for the random draws. The same inputs and seed always return the same answer. Default \"dry-run\".",
        "type": "string",
        "minLength": 1,
        "maxLength": 64
      }
    },
    "$schema": "https://json-schema.org/draft/2020-12/schema"
  }