Roundhouse

ccpcrate.ca

A deterministic MCP server for the Canadian CCPC corporate rate stack: small business deduction and its grinds, Part IV, RDTOH, the dividend refund, and the provincial layer.

OtherLiveeip155:8453Exactvia cdp
https://ccpcrate.ca/v1/resolve
Calls · 30d
1→ 0%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 15 snapshots so far.
$0.75
Verified settled volume
3 settlements proven x402 by their on-chain EIP-3009 marker.
$0.250
Listed price
As published in the catalog. Always read the live 402 before paying.
1
Calls · 30d
Upstream's own call count for this endpoint, not ours.
1
Unique payers · 30d
Last called 2026-09-09 23:33Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x74d8ebac88fd0ccd89db55ead2992ba428da16c9

The wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.

Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

Provider

The payTo wallet does not resolve to a registered ERC-8004 agent. That is not a verdict on the service — most of the catalog is unregistered.

Accepts

The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.

0.25USDC≈ $0.25 USD
on Base · exact scheme

Pay 0.25 USDC on Base to 0x74d8…a16c9. The signed payment is good for 5 minutes.

Paid to
0x74d8…a16c9
USD Coin contract
0x8335…02913
Payment window
5 minutes
As published
250000 smallest units
The catalog’s raw entry
[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0x74d8ebac88fd0ccd89db55ead2992ba428da16c9",
    "amount": "250000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 300
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "body": {
          "taxYear": {
            "end": "2025-12-31",
            "start": "2025-01-01"
          },
          "province": "ON",
          "taxableIncome": 500000,
          "groupAaiiPriorYear": 80000,
          "activeBusinessIncome": 400000,
          "businessLimitAllocated": 500000,
          "dividendsPaidNonEligible": 100000,
          "aggregateInvestmentIncome": 100000
        },
        "type": "http",
        "method": "POST",
        "bodyType": "json"
      },
      "output": {
        "type": "json",
        "example": {
          "lines": {
            "on_tax": 24300,
            "part_i_tax": 77667,
            "sbd_income": 350000,
            "part_iv_tax": 0,
            "combined_tax": 101967,
            "dividend_refund": 30667,
            "reduced_business_limit": 350000,
            "small_business_deduction": -66500,
            "total_tax_payable_net_of_refund": 71300
          },
          "rules_version": "0.2.7",
          "engine_version": "0.0.1"
        }
      }
    },
    "schema": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "required": [
        "input"
      ],
      "properties": {
        "input": {
          "type": "object",
          "required": [
            "type",
            "method",
            "bodyType",
            "body"
          ],
          "properties": {
            "body": {
              "required": [
                "taxYear",
                "province"
              ],
              "properties": {
                "qc": {
                  "type": "object",
                  "description": "Québec inputs (CO-771)"
                },
                "taxYear": {
                  "type": "object"
                },
                "province": {
                  "enum": [
                    "AB",
                    "BC",
                    "MB",
                    "NB",
                    "NL",
                    "NS",
                    "NT",
                    "NU",
                    "ON",
                    "PE",
                    "QC",
                    "SK",
                    "YT"
                  ],
                  "type": "string",
                  "description": "Province of the permanent establishment (two-letter code)"
                },
                "cdaOpening": {
                  "type": "number",
                  "description": "Capital dividend account opening balance (returns cda_closing)"
                },
                "rdtohOpening": {
                  "type": "object",
                  "description": "Opening ERDTOH / NERDTOH in T2 terms. Omitted = 0 with a warning when it matters"
                },
                "taxableIncome": {
                  "type": "number",
                  "description": "Part I taxable income (T2 line 360). Omit for a holdco and supply the income lines instead; the engine derives it"
                },
                "netIncomeForTax": {
                  "type": "number",
                  "description": "Holdco: net income for tax purposes (Sch 1 result) — overrides the derivation"
                },
                "propertyExpenses": {
                  "type": "number",
                  "description": "Holdco: deductible property expenses of the year (total)"
                },
                "groupAaiiPriorYear": {
                  "type": "number",
                  "description": "T2 line 417: Σ Sch 7 line 745 of the associated group for taxation years ending in the preceding calendar year. REQUI..."
                },
                "netIncomeAccounting": {
                  "type": "number",
                  "description": "Holdco: net income per financial statements"
                },
                "otherPropertyIncome": {
                  "type": "number",
                  "description": "Holdco: property income other than dividends and capital-gains dividends"
                },
                "taxableCapitalGains": {
                  "type": "number",
                  "description": "Sch 6: taxable capital gains (the included half)"
                },
                "activeBusinessIncome": {
                  "type": "number",
                  "description": "T2 line 400: income from an active business carried on in Canada"
                },
                "lossesByYearOfOrigin": {
                  "type": "object",
                  "description": "Sch 4 Part 6: opening balances by year of origin, e.g. {\"2011\": 263564}"
                },
                "provincialProportion": {
                  "type": "number",
                  "description": "Share of taxable income allocated to the province (Reg. 402). Default 1"
                },
                "capitalGainsDividends": {
                  "type": "number",
                  "description": "Capital-gains dividends received (full amount; half to CDA)"
                },
                "dividendsPaidEligible": {
                  "type": "number",
                  "description": "Eligible dividends paid (designated) in the year"
                },
                "allowableCapitalLosses": {
                  "type": "number",
                  "description": "Sch 6: allowable capital losses of the year"
                },
                "businessLimitAllocated": {
                  "type": "number",
                  "description": "Business limit allocated to this corporation (Sch 23 line 410 if associated, else the statutory limit). 0 = allocatio..."
                },
                "foreignInvestmentIncome": {
                  "type": "number",
                  "description": "T2 line 445: foreign investment income"
                },
                "nonCapitalLossesOpening": {
                  "type": "number",
                  "description": "Sch 4: non-capital loss pool at the start of the year"
                },
                "dividendsPaidNonEligible": {
                  "type": "number",
                  "description": "Non-eligible taxable dividends paid in the year"
                },
                "foreignBusinessTaxCredit": {
                  "type": "number",
                  "description": "T2 line 636: foreign business income tax credit"
                },
                "aggregateInvestmentIncome": {
                  "type": "number",
                  "description": "T2 line 440: aggregate investment income (s.129(4))"
                },
                "dividendsReceivedConnected": {
                  "type": "array",
                  "description": "Dividends from connected corporations (s.186(4)) — Part IV only through the payer's refund"
                },
                "foreignNonBusinessTaxCredit": {
                  "type": "number",
                  "description": "T2 line 632: foreign non-business income tax credit"
                },
                "taxableCapitalGroupPriorYear": {
                  "type": "number",
                  "description": "T2 line 415: taxable capital employed in Canada of the group, prior year. Omit when under 10 M"
                },
                "dividendsPaidOfWhichConnected": {
                  "type": "number",
                  "description": "How much OF the dividends paid above went to connected corporations — a portion of dividendsPaidEligible + dividendsP..."
                },
                "dividendsReceivedPortfolioEligible": {
                  "type": "number",
                  "description": "Eligible taxable dividends from non-connected payers (Part IV → ERDTOH)"
                },
                "nonCapitalLossesClaimedAgainstPartI": {
                  "type": "number",
                  "description": "Non-capital losses claimed against Part I income"
                },
                "nonCapitalLossesClaimedAgainstPartIV": {
                  "type": "number",
                  "description": "Non-capital / farm losses claimed against Part IV (s.186(1)(c),(d)) — the loss amount"
                },
                "dividendsReceivedPortfolioNonEligible": {
                  "type": "number",
                  "description": "Non-eligible taxable dividends from non-connected payers (Part IV → NERDTOH)"
                }
              }
            },
            "type": {
              "type": "string",
              "const": "http"
            },
            "method": {
              "enum": [
                "POST",
                "PUT",
                "PATCH"
              ],
              "type": "string"
            },
            "bodyType": {
              "enum": [
                "json",
                "form-data",
                "text"
              ],
              "type": "string"
            }
          },
          "additionalProperties": false
        },
        "output": {
          "type": "object",
          "required": [
            "type"
          ],
          "properties": {
            "type": {
              "type": "string"
            },
            "example": {
              "type": "object"
            }
          }
        }
      }
    }
  }
}

Provenance

Seen in the source catalog
2026-09-09 23:33Z
Last indexed by Roundhouse
2026-09-24 07:00Z
Last enriched (probe, favicon, geo)
2026-09-10 00:45Z
x402 version
2
Max timeout
300s
Liveness probe
HTTP 405
Report

Hand this page to an agent

Copy the prompt and paste it into Claude, an MCP client or your own agent — it will vet this service and call it over the free read API. No key, no account.

GET api.roundhouseai.io/v0/endpoints

This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 15 snapshots so far. Verified volume counts only settlements with an on-chain EIP-3009 marker.

Open skill.md
Show the prompt
Using Roundhouse, look up the x402 service ccpcrate.ca and tell me whether it is
worth paying: what a call costs, whether the endpoint answered when last probed, and what
its payment record actually shows.

curl -s 'https://api.roundhouseai.io/v0/endpoints?q=ccpcrate.ca'
curl -s 'https://api.roundhouseai.io/v0/merchants/<the payTo wallet returned above>'

Then call it: read the price from the live 402 at https://ccpcrate.ca/v1/resolve, never from
a cached figure, and pay with an x402 client.

The /v0 API needs an API key (`authorization: Bearer rh_live_…`) on everything except
/v0/unified* and /v0/endpoints. Mint a personal key for $0.01 at GET https://api.roundhouseai.io/v0/test/x402,
or use an organization key from https://roundhouseai.io/dashboard/team.

If you do not have Roundhouse tools or skills installed, read
https://roundhouseai.io/skill.md first — it is the whole procedure.