{
      "tool_id": "art-72-cbam-precursor-emissions-aggregator",
      "tool_version": "1.0.0",
      "display_name": "CBAM Precursor-Emissions Aggregator",
      "mcp_name": "aggregate_cbam_precursor_emissions",
      "mandate_type": "compliance_mandate",
      "wave": 16,
      "gpu": false,
      "url": "https://ainumbers.co/chaingraph/art-72-cbam-precursor-emissions-aggregator.html",
      "description": "Rolls up embedded emissions across precursors in a steel/aluminium value chain (incl. the 2028 pre-consumer-scrap rule) so a producer can supply complex-goods emissions to its importer. Pre-positions the downstream-180 scope extension (Council position 12 Jun 2026, application 1 Jan 2028).",
      "input_schema_ref": "chaingraph/art-72-cbam-precursor-emissions-aggregator.html#manifest",
      "consumes": [
        "art-68-carbon-compliance-fit-diagnostic"
      ],
      "feeds": [
        "art-69-cbam-embedded-emissions-calculator",
        "cry-04-merkle-batch-verifier"
      ],
      "status": "live",
      "conformance_fixtures": false,
      "compute_capability": "server",
      "compute_images": [{"system":"sha256-source","image_id":"sha256:989771281b7268f99e74d59f151efd4deaf418e9c6e233529b873618190229fd","valid_from":"2026-07-10"},{"system":"risc0","image_id":"sha256:a1a0bc89b5b1febaeda3519f6dbade0fa5ac16beeb143c4e1b01689573567bc6","valid_from":"2026-06-28"}],
      "compute_proof": {
        "type": "ZkVmReceipt",
        "system": "risc0",
        "receiptFormat": "groth16-bn254",
        "imageId": "sha256:a1a0bc89b5b1febaeda3519f6dbade0fa5ac16beeb143c4e1b01689573567bc6",
        "seal": "GQ0G7Gvze/ja6+KX4lJqxnG0H9xDm7wh99OSTz2rqHIBYvZEP+OGmjsASEYTFb5VE9HrceK9cM099qdZcvAsFB2ph/qAebM1KuxEXJxeZlcaTkVZrHSfF9hfY7IbYc0ZK90NrSsivuOqXZDI+ZgNgNJgCv5Z1044cOGPI9wXJTkc1J9xdQxjfbpecHxan4bJEqlS/w1xAV/oBSPyMshGZhLFmmP+gLVFWgkBsce4j8W10xgdTUQ7CsUf1Hy+q+MzL0wWAibo+IRRQtBPTyFeylSRmCTa9GkVxV96QvIsqdUe9+HdZH1htOyki7Fc365KlaG+kmHcg/Z1UedT34Zw7A==",
        "journal": {
          "chaingraph_version": "0.4.0",
          "kernel_digest": "sha256:989771281b7268f99e74d59f151efd4deaf418e9c6e233529b873618190229fd",
          "output": {
            "cumulative_see_tco2e": 0,
            "data_quality_grade": "INCOMPLETE",
            "note": "No precursors provided. Supply precursor data to compute complex-goods embedded emissions. DECISION-SUPPORT DRAFT.",
            "precursor_breakdown": [],
            "quantity_tonnes": 1,
            "scrap_adjustment": 0
          }
        }
      },
      "export_capability": [
        "pdf",
        "xlsx"
      ]
    }