OpenChainGraph Suite · ART-346 · Workers’ Compensation

NCCI Experience Modification Calculator

Workers’-compensation experience rating modification per the NCCI Experience Rating Plan Manual’s published national formula: split each claim into primary and excess at the state split point, then Mod = (Ap + W×Ae + (1-W)×Ee + B) / (Ep + B).

NCCI Experience Rating Plan Primary/Excess Split Weighting · Ballast
🔒 All inputs are processed locally in your browser. No data is transmitted. Do not enter real personal data — use synthetic or anonymised inputs only.
⚠ NCCI split points, expected losses, expected primary losses, weighting values, and ballast values come from licensed NCCI/state rating-bureau tables. Look those values up on your own NCCI experience rating worksheet and enter them below — this tool never ships or reproduces the tables themselves, only the published split-and-mod formula.
Claims (Actual Incurred Losses)
Rating Values (from your NCCI worksheet)
Per-claim/per-accident state split point.
Rating Detail
Execution Hash (SHA-256)







  

    
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Copy this paragraph into Claude, OpenClaw, or any MCP-aware agent to run this exact tool, with this sample, and verify the artifact.

  
Run the AINumbers MCP tool `compute_experience_mod`. Task: Workers'-compensation experience rating modification (NCCI Experience Rating Plan Manual published national formula): per-claim primary/excess loss split at the state split point, then Mod = (Ap + W×Ae + (1-W)×Ee + B) / (Ep + B).
Call it with arguments: {"policy_parameters":{"claims":[{"incurred_losses":25000},{"incurred_losses":8000},{"incurred_losses":40000}],"split_point":15000,"expected_losses":60000,"expected_primary_losses":24000,"weighting_value":0.25,"ballast_value":12000}}
Verify before trusting: call `verify_execution_hash` on mcp.ainumbers.co (https://mcp.ainumbers.co/mcp) with the parameter `claimed_hash` set to the returned `execution_hash`, passing the full artifact the run returned (the object containing `policy_parameters` + `output_payload` + `execution_hash`; equivalently `policy_parameters` + `output_payload` with `claimed_hash`), not the bare hash string.
Return the ledger link https://ledger.ainumbers.co/ so a human can re-verify without contacting us.
PII rule: All inputs are processed locally in your browser. No data is transmitted. Do not enter real personal data — use synthetic or anonymised inputs only.
Open the tool with the sample prefilled: https://ainumbers.co/chaingraph/art-346-compute-experience-mod.html#p=v1.H4sIAAAAAAAA_wHSAC3_eyJjbGFpbXMiOlt7ImluY3VycmVkX2xvc3NlcyI6MjUwMDB9LHsiaW5jdXJyZWRfbG9zc2VzIjo4MDAwfSx7ImluY3VycmVkX2xvc3NlcyI6NDAwMDB9XSwic3BsaXRfcG9pbnQiOjE1MDAwLCJleHBlY3RlZF9sb3NzZXMiOjYwMDAwLCJleHBlY3RlZF9wcmltYXJ5X2xvc3NlcyI6MjQwMDAsIndlaWdodGluZ192YWx1ZSI6MC4yNSwiYmFsbGFzdF92YWx1ZSI6MTIwMDB9oC7Ir9IAAAA