OpenChainGraph Suite · ART-458 · SOX 404 / ICFR Control Testing

Attribute Sampling Plan Generator

Computes a sample size from confidence level, tolerable deviation rate, and expected deviation rate using the standard zero-EDR Poisson attribute-sampling formula (with an expansion factor for nonzero EDR). Item selection is deterministic interval sampling over a declared population hash — no randomness, so any auditor can replay the identical sample from the identical declared inputs. If the tolerable rate is at or below the expected rate, the plan is statistically indefensible and the tool falls back to a full-population census rather than a bad plan.

Deterministic Sampling Poisson Attribute Formula Control-Test Evidence Step 1

🔒 All inputs are processed locally in your browser. No data is transmitted. Do not enter real personal data — use synthetic or anonymised inputs only.

⚠ This tool performs no random sampling. Item selection is a pure function of population size and your declared population hash, so the same inputs always yield the same sample.

Sampling Plan Inputs

Confidence level

Population size

Tolerable deviation rate (%)

Expected deviation rate (%)

Population hash (identifies the sorted, extracted population)

Detail

Execution Hash (SHA-256)

Ask your agent

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 `plan_attribute_sample`. Task: Compute a SOX 404 / ICFR attribute-sampling plan from confidence level, tolerable deviation rate, and expected deviation rate (all policy inputs) using the standard zero-EDR Poisson attribute-sampling formula with an expansion factor for nonzero EDR.
Call it with arguments: {"policy_parameters":{"confidence_level":95,"population_size":1000,"tolerable_deviation_rate":5,"expected_deviation_rate":0,"population_hash":"abc123"}}
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-458-attribute-sampling-plan.html#p=v1.H4sIAAAAAAAA_wGCAH3_eyJjb25maWRlbmNlX2xldmVsIjo5NSwicG9wdWxhdGlvbl9zaXplIjoxMDAwLCJ0b2xlcmFibGVfZGV2aWF0aW9uX3JhdGUiOjUsImV4cGVjdGVkX2RldmlhdGlvbl9yYXRlIjowLCJwb3B1bGF0aW9uX2hhc2giOiJhYmMxMjMifZz2BTqCAAAA