Critical Path Partners MCP server

cpm-engine

An open-source CPM engine with AACE-aligned methodology and a published Daubert disclosure. Open source. AACE-aligned. Daubert-disclosed. 1,288 JS unit tests, plus JS/Python parity on 1009 of 1015 enumerated cross-validation comparisons; the remaining 6 are not compared because neither engine emits the field on a completed activity (see DAUBERT.md §3.1).

Court-facing usage: pair this engine with the analyst-application discipline in FORENSICUSESOP.md, the verification chain in VERIFYRELEASE.md, the per-release receipts in release-evidence/, and the field-level P6 comparison framework in validation/p6-comparison/. Do NOT cite README in a court-facing report — cite the documents listed in DAUBERT.md and FORENSICUSE_SOP.md §Required pairing.

Maintained by Critical Path Partners — a forensic-scheduling consultancy.

Quick start

The npm package lags this repository. npm latest is 2.9.19, published 2026-05-17 — that is the number the npm badge above renders, and nothing has been published to npm since, while 22 tagged releases have shipped here. npm install cpp-cpm-engine therefore does not give you the engine described by DAUBERT.md, by the release-evidence/ packets, or by any version reference in these docs. Install from the git tag:

git clone https://github.com/danafitkowski/cpp-cpm-engine.git
cd cpp-cpm-engine
git checkout v2.9.44

The engine has zero runtime dependencies, so a clone is all it needs. This is the same install path VERIFY_RELEASE.md gives an opposing expert.

const E = require('./cpm-engine.js');

const result = E.computeCPM(
    [
        { code: 'A', duration_days: 5, early_start: '2026-01-05', clndr_id: 'MF' },
        { code: 'B', duration_days: 3, clndr_id: 'MF' },
        { code: 'C', duration_days: 4, clndr_id: 'MF' },
    ],
    [
        { from_code: 'A', to_code: 'B', type: 'FS', lag_days: 0 },
        { from_code: 'B', to_code: 'C', type: 'FS', lag_days: 0 },
    ],
    {
        dataDate: '2026-01-05',
        calMap: { MF: { work_days: [1, 2, 3, 4, 5], holidays: [] } },
    }
);

console.log('Project finish:', result.projectFinish);     // 2026-01-21
console.log('Critical path:', result.criticalCodesArray); // ['A', 'B', 'C']
console.log('Engine version:', result.manifest.engine_version); // 2.9.44

That's it. Forward pass, backward pass, total float, free float, calendar arithmetic, P6-conventional date math, multi-jurisdiction holidays — all done.

Why this engine?

Shortened. The full README is on GitHub.