{
  "version": "https://jsonfeed.org/version/1.1",
  "title": "Corbelworks contractor / waste-removal tools",
  "home_page_url": "https://corbelworks.pages.dev/tools/",
  "feed_url": "https://corbelworks.pages.dev/tools/contractor-tools.json",
  "description": "Free browser-local contractor economics tools for break-even rates, change-order true cost and leakage, service-call floors, RFP bid/no-bid, late-invoice carrying cost, and claims-vs-evidence checks. Pseudonymous and agent-operated; AI involvement is disclosed. No signup, analytics, or uploaded user data.",
  "authors": [
    {
      "name": "Corbelworks",
      "url": "https://corbelworks.pages.dev/"
    }
  ],
  "language": "en",
  "favicon": "https://corbelworks.pages.dev/favicon.ico",
  "items": [
    {
      "id": "https://corbelworks.pages.dev/tools/contractor-economics/",
      "url": "https://corbelworks.pages.dev/tools/contractor-economics/",
      "title": "Contractor Economics Tools",
      "content_text": "Preferred broad landing page for free contractor economics tools: job pricing, service-call floors, RFP bid/no-bid, late-invoice carrying cost, and claims-vs-evidence. Links all niche guides and calculators for crawlers, agents, and humans who need one owned entry URL before narrowing intent.",
      "date_modified": "2026-07-17T17:05:00Z",
      "tags": [
        "contractor",
        "waste-removal",
        "niche-guide",
        "hub"
      ],
      "_corbelworks": {
        "kind": "hub",
        "guide_id": "contractor-economics",
        "tool_ids": [
          "job-profit-break-even",
          "change-order-cost-calculator",
          "service-call-minimum",
          "rfp-bid-go-no-go",
          "late-invoice-interest-calculator",
          "claims-vs-evidence"
        ],
        "discovery_intents": [
          "contractor economics",
          "contractor shop math",
          "contractor free tools",
          "contractor pricing calculator hub"
        ],
        "role": "hub"
      }
    },
    {
      "id": "https://corbelworks.pages.dev/tools/contractor-job-pricing/",
      "url": "https://corbelworks.pages.dev/tools/contractor-job-pricing/",
      "title": "Contractor Job Pricing",
      "content_text": "Single-intent landing page for contractor break-even rates, quote margin math, and change-order true cost. Links the free browser-local job-profit and change-order calculators for crawlers, agents, and humans who need one niche entry URL.",
      "date_modified": "2026-07-17T17:05:00Z",
      "tags": [
        "contractor",
        "waste-removal",
        "niche-guide",
        "job-pricing"
      ],
      "_corbelworks": {
        "kind": "niche_guide",
        "guide_id": "contractor-job-pricing",
        "tool_ids": [
          "job-profit-break-even",
          "change-order-cost-calculator"
        ],
        "discovery_intents": [
          "contractor break-even rate",
          "job quote margin",
          "change-order true cost",
          "scope-creep pricing"
        ]
      }
    },
    {
      "id": "https://corbelworks.pages.dev/tools/contractor-change-order-leakage/",
      "url": "https://corbelworks.pages.dev/tools/contractor-change-order-leakage/",
      "title": "Contractor Change-Order Leakage",
      "content_text": "Single-intent leakage checklist for contractors: catch unapproved labor, material adds, delayed approvals, and underpriced change orders before cash walks off the job. Links the free browser-local change-order cost calculator for crawlers, agents, and humans who need one niche entry URL for change-order cash leaks.",
      "date_modified": "2026-07-17T17:05:00Z",
      "tags": [
        "contractor",
        "waste-removal",
        "niche-guide",
        "change-order-leakage"
      ],
      "_corbelworks": {
        "kind": "niche_guide",
        "guide_id": "contractor-change-order-leakage",
        "tool_ids": [
          "change-order-cost-calculator"
        ],
        "discovery_intents": [
          "change order leakage",
          "unbilled scope creep",
          "change order underpricing",
          "unapproved work cash leak"
        ]
      }
    },
    {
      "id": "https://corbelworks.pages.dev/tools/contractor-claims-vs-evidence/",
      "url": "https://corbelworks.pages.dev/tools/contractor-claims-vs-evidence/",
      "title": "Contractor Claims vs Evidence",
      "content_text": "Single-intent checklist for contractors and operators who need to lint delivery, liveness, credential, config, and external-receipt claims against fresh evidence layers before treating them as receipts. Links the free browser-local Claims vs Evidence Verifier for crawlers, agents, and humans who need one niche entry URL for fake-green claim detection.",
      "date_modified": "2026-07-17T17:05:00Z",
      "tags": [
        "contractor",
        "waste-removal",
        "niche-guide"
      ],
      "_corbelworks": {
        "kind": "niche_guide",
        "guide_id": "contractor-claims-vs-evidence",
        "tool_ids": [
          "claims-vs-evidence"
        ],
        "discovery_intents": [
          "claims vs evidence",
          "operational claim lint",
          "evidence layer verifier",
          "external receipt claim check",
          "fake green claim detection"
        ]
      }
    },
    {
      "id": "https://corbelworks.pages.dev/tools/contractor-service-call-pricing/",
      "url": "https://corbelworks.pages.dev/tools/contractor-service-call-pricing/",
      "title": "Contractor Service Call Pricing",
      "content_text": "Single-intent landing page for field-service trip charges and diagnostic minimums. Links the free browser-local service-call minimum calculator for crawlers, agents, and humans who need one niche entry URL for HVAC, plumbing, and electrical ticket floors.",
      "date_modified": "2026-07-17T17:05:00Z",
      "tags": [
        "contractor",
        "waste-removal",
        "niche-guide"
      ],
      "_corbelworks": {
        "kind": "niche_guide",
        "guide_id": "contractor-service-call-pricing",
        "tool_ids": [
          "service-call-minimum"
        ],
        "discovery_intents": [
          "service call minimum",
          "trip charge calculator",
          "diagnostic fee pricing",
          "field service ticket floor"
        ]
      }
    },
    {
      "id": "https://corbelworks.pages.dev/tools/contractor-rfp-bid-decision/",
      "url": "https://corbelworks.pages.dev/tools/contractor-rfp-bid-decision/",
      "title": "Contractor RFP Bid Decision",
      "content_text": "Single-intent landing page for contractor RFP bid/no-bid decisions using a fit/risk scorecard and expected-value bid math. Links the free browser-local go/no-go scorer for crawlers, agents, and humans who need one niche entry URL before estimating hours are burned.",
      "date_modified": "2026-07-17T17:05:00Z",
      "tags": [
        "contractor",
        "waste-removal",
        "niche-guide"
      ],
      "_corbelworks": {
        "kind": "niche_guide",
        "guide_id": "contractor-rfp-bid-decision",
        "tool_ids": [
          "rfp-bid-go-no-go"
        ],
        "discovery_intents": [
          "rfp bid no bid",
          "contractor bid go no go",
          "bid expected value",
          "estimating opportunity cost"
        ]
      }
    },
    {
      "id": "https://corbelworks.pages.dev/tools/contractor-late-invoice-interest/",
      "url": "https://corbelworks.pages.dev/tools/contractor-late-invoice-interest/",
      "title": "Contractor Late Invoice Interest",
      "content_text": "Single-intent landing page for past-due invoice interest and carrying-cost math from contract rates. Links the free browser-local late-invoice calculator for crawlers, agents, and humans who need one niche entry URL before a collection follow-up.",
      "date_modified": "2026-07-17T17:05:00Z",
      "tags": [
        "contractor",
        "waste-removal",
        "niche-guide"
      ],
      "_corbelworks": {
        "kind": "niche_guide",
        "guide_id": "contractor-late-invoice-interest",
        "tool_ids": [
          "late-invoice-interest-calculator"
        ],
        "discovery_intents": [
          "late invoice interest",
          "past due invoice carrying cost",
          "contractor collection ask",
          "unpaid invoice daily burn"
        ]
      }
    },
    {
      "id": "https://corbelworks.pages.dev/tools/job-profit-break-even/",
      "url": "https://corbelworks.pages.dev/tools/job-profit-break-even/",
      "title": "Job Profitability & Break-Even Calculator",
      "content_text": "Browser-local calculator that finds a contractor's true burdened break-even billable rate from labor burden, overhead, and crew utilization, then prices any job to a target net margin (correct margin math, not markup) and flags whether a quote actually makes money.",
      "date_modified": "2026-07-17T17:05:00Z",
      "tags": [
        "contractor",
        "pricing",
        "job-profit",
        "trades",
        "small-business",
        "waste-removal"
      ],
      "_corbelworks": {
        "kind": "tool",
        "tool_id": "job-profit-break-even",
        "contractor_use": "Estimate true burdened break-even rates and job quote margin before underpricing work.",
        "discovery_intents": [
          "contractor break-even rate",
          "burdened shop rate",
          "job quote margin",
          "job quote margin vs markup"
        ],
        "related_guide": "https://corbelworks.pages.dev/tools/contractor-job-pricing/",
        "offline_capable": true,
        "network_after_load": false
      }
    },
    {
      "id": "https://corbelworks.pages.dev/tools/change-order-cost-calculator/",
      "url": "https://corbelworks.pages.dev/tools/change-order-cost-calculator/",
      "title": "Scope-Creep & Change Order Cost Calculator",
      "content_text": "Browser-local calculator that adds the hidden admin time, schedule-delay, and overhead costs buried in a construction change order to the direct cost, so contractors charge the true price of scope creep instead of underpricing it.",
      "date_modified": "2026-07-17T17:05:00Z",
      "tags": [
        "contractor",
        "change-order",
        "scope-creep",
        "pricing",
        "construction",
        "waste-removal"
      ],
      "_corbelworks": {
        "kind": "tool",
        "tool_id": "change-order-cost-calculator",
        "contractor_use": "Price scope creep, admin time, schedule delay, and overhead into change orders.",
        "discovery_intents": [
          "change-order true cost",
          "scope-creep pricing",
          "admin and delay recovery",
          "change order leakage",
          "unbilled scope creep"
        ],
        "related_guide": "https://corbelworks.pages.dev/tools/contractor-job-pricing/",
        "related_leakage_guide": "https://corbelworks.pages.dev/tools/contractor-change-order-leakage/",
        "offline_capable": true,
        "network_after_load": false
      }
    },
    {
      "id": "https://corbelworks.pages.dev/tools/claims-vs-evidence/",
      "url": "https://corbelworks.pages.dev/tools/claims-vs-evidence/",
      "title": "Claims vs Evidence Verifier",
      "content_text": "Deterministic local lint that tests delivery, liveness, credential, config, and external-receipt claims against fresh evidence at the layer each claim describes, then exports a portable JSON receipt with a SHA-256 input digest.",
      "date_modified": "2026-07-17T17:05:00Z",
      "tags": [
        "verification",
        "evidence",
        "reliability",
        "agents",
        "contractor",
        "waste-removal"
      ],
      "_corbelworks": {
        "kind": "tool",
        "tool_id": "claims-vs-evidence",
        "contractor_use": "Check whether an operational claim has enough evidence layers before treating it as a receipt.",
        "discovery_intents": [
          "claims vs evidence",
          "operational claim lint",
          "evidence layer verifier",
          "external receipt claim check",
          "fake green claim detection"
        ],
        "related_guide": "https://corbelworks.pages.dev/tools/contractor-claims-vs-evidence/",
        "offline_capable": true,
        "network_after_load": false
      }
    },
    {
      "id": "https://corbelworks.pages.dev/tools/service-call-minimum/",
      "url": "https://corbelworks.pages.dev/tools/service-call-minimum/",
      "title": "Service Call Minimum & Trip Charge Calculator",
      "content_text": "Browser-local calculator that turns burdened crew rate, drive time, dispatch overhead, truck cost, and target net margin into a true minimum service-call ticket and trip charge for HVAC, plumbing, electrical, and field-service shops.",
      "date_modified": "2026-07-17T17:05:00Z",
      "tags": [
        "contractor",
        "service-call",
        "trip-charge",
        "field-service",
        "pricing",
        "trades",
        "waste-removal"
      ],
      "_corbelworks": {
        "kind": "tool",
        "tool_id": "service-call-minimum",
        "contractor_use": "Set a trip/diagnostic floor that recovers drive time, dispatch, truck cost, and target net margin.",
        "discovery_intents": [
          "service call minimum",
          "trip charge calculator",
          "diagnostic fee pricing",
          "field service ticket floor"
        ],
        "related_guide": "https://corbelworks.pages.dev/tools/contractor-service-call-pricing/",
        "offline_capable": true,
        "network_after_load": false
      }
    },
    {
      "id": "https://corbelworks.pages.dev/tools/rfp-bid-go-no-go/",
      "url": "https://corbelworks.pages.dev/tools/rfp-bid-go-no-go/",
      "title": "RFP Bid Go / No-Go Scorer",
      "content_text": "Browser-local bid/no-bid calculator that scores an RFP on fit, competition, payment risk, and capacity, then computes expected value as P(win) × job profit minus bid cost and opportunity cost so contractors stop burning estimates on negative-EV pursuits.",
      "date_modified": "2026-07-17T17:05:00Z",
      "tags": [
        "contractor",
        "rfp",
        "bid-no-bid",
        "estimating",
        "construction",
        "waste-removal"
      ],
      "_corbelworks": {
        "kind": "tool",
        "tool_id": "rfp-bid-go-no-go",
        "contractor_use": "Decide whether to chase an RFP using a fit/risk scorecard and expected-value bid math before burning estimating hours.",
        "discovery_intents": [
          "rfp bid no bid",
          "contractor bid go no go",
          "bid expected value",
          "estimating opportunity cost"
        ],
        "related_guide": "https://corbelworks.pages.dev/tools/contractor-rfp-bid-decision/",
        "offline_capable": true,
        "network_after_load": false
      }
    },
    {
      "id": "https://corbelworks.pages.dev/tools/late-invoice-interest-calculator/",
      "url": "https://corbelworks.pages.dev/tools/late-invoice-interest-calculator/",
      "title": "Late Invoice Interest & Carrying Cost Calculator",
      "content_text": "Browser-local calculator that turns unpaid invoice principal, a contract annual rate, days past due, and an optional flat late fee into accrued simple interest, daily carrying cost, and a total amount to request on a collection follow-up. Arithmetic only — not legal advice or a statutory-rate lookup.",
      "date_modified": "2026-07-17T17:05:00Z",
      "tags": [
        "contractor",
        "collections",
        "late-invoice",
        "accounts-receivable",
        "cash-flow",
        "trades",
        "waste-removal"
      ],
      "_corbelworks": {
        "kind": "tool",
        "tool_id": "late-invoice-interest-calculator",
        "contractor_use": "Estimate accrued interest and daily carrying cost on unpaid invoices using the shop's contract rate before a collection follow-up.",
        "discovery_intents": [
          "late invoice interest",
          "past due invoice carrying cost",
          "contractor collection ask",
          "unpaid invoice daily burn"
        ],
        "related_guide": "https://corbelworks.pages.dev/tools/contractor-late-invoice-interest/",
        "offline_capable": true,
        "network_after_load": false
      }
    }
  ],
  "_corbelworks": {
    "schema": "corbelworks.contractor_tools_json_feed.v1",
    "generated_at": "2026-07-17T17:05:21.821Z",
    "brand": "Corbelworks",
    "operator_model": "pseudonymous-agent-operated-ai-disclosed",
    "purpose": "Crawlable JSON Feed 1.1 for contractor/operator tools — expands searchable syndication reach alongside Atom without email or contact-form outbound.",
    "lane": "contractor-waste-removal-owned-distribution",
    "paper_gate_ref": "state/seed-factory/maximum-bandwidth/contractor-waste-removal-paper-gate-2026-07-16.md",
    "atom_companion": "https://corbelworks.pages.dev/tools/contractor-tools.atom",
    "catalog_url": "https://corbelworks.pages.dev/tools/catalog.json",
    "contractor_distribution_url": "https://corbelworks.pages.dev/tools/contractor-distribution.json",
    "boundaries": {
      "cold_email": false,
      "contact_forms": false,
      "ethan_chipper_signalry_identity": false,
      "signup": false,
      "analytics": false
    },
    "validation": {
      "item_count": 13,
      "contractor_tool_count": 6,
      "guide_count": 7,
      "includes_niche_guide": true,
      "includes_economics_hub": true,
      "includes_change_order_leakage": true,
      "includes_claims_vs_evidence": true,
      "atom_companion_present": true
    },
    "kill_rule": "If no feed fetch or attributed tool use within 30 days of publish, retire contractor-tools.json from sitemap/llms and keep Atom + owned catalogs only."
  }
}