@cubiczan/chp

Consensus Hardening Protocol for TypeScript — Profile B capital gate, canonical JSON, and signed audit ledger.

Canonical protocol repo: icohangar-ops/consensus-hardening-protocol (spec, golden vectors, Python reference)

Install

npm (this package)

npm install @cubiczan/chp

• Registry: npmjs.com/package/@cubiczan/chp

PyPI (Python reference)

pip install consensus-hardening-protocol

• Registry: pypi.org/project/consensus-hardening-protocol

• Profile A deliberation + the normative spec. This npm package is the installable TypeScript surface for spend/mandate gates — same channel shape as @cubiczan/codesentinel-mcp.

Related MCP server: vantic-mcp

How the pieces fit

CHP is the engine. MCP servers are the transport.

MCP client (Cursor / Claude / …)
        │  tools/call
        ▼
┌───────────────────────────┐
│  MCP server (transport)   │  ← agent-conductor, codesentinel-mcp, …
│  decision_gate            │
│  decision_adversary       │
│  evaluate_spend_gate      │
└─────────────┬─────────────┘
              │ depends on
              ▼
┌───────────────────────────┐
│  Published CHP packages   │
│  PyPI: consensus-hardening-protocol  (Profile A)
│  npm:  @cubiczan/chp                 (Profile B)  ← you are here
└───────────────────────────┘

This package is Profile B (evaluateGate / approveHuman). Wire it into an MCP server as something like evaluate_spend_gate. Profile A deliberation tools (decision_gate, decision_adversary) live on agent-conductor, which depends on the PyPI package behind a stdio bridge.

MCP one-liner

For Cursor / Claude without writing glue code:

npx -y @cubiczan/chp-mcp

Registry name: io.github.icohangar-ops/chp-mcp. Source: cubiczan-chp-mcp.

Conformance: Profile B 30/30 · Profile A (Python) 70/70.

Quick start

import { evaluateGate, approveHuman } from "@cubiczan/chp";

const policy = {
  max_notional: 500,
  daily_cap: 2500,
  hitl_threshold: 250,
  min_confidence: 0.55,
  allowed_actions: ["LONG", "SHORT"],
};

const decision = evaluateGate(
  { action: "LONG", asset: "ETH", notional: 300, confidence: 0.9 },
  policy,
);
// → { state: "HITL_REQUIRED", requires_human: true, ... }

const locked = approveHuman(
  { action: "LONG", asset: "ETH", notional: 300, confidence: 0.9 },
  policy,
  "cfo@example.com",
);
// → { state: "LOCKED", allowed: true, ... }

Hard rule failures (max_notional, daily_cap, min_confidence, …) are collected before the HITL threshold test. A human may cross the threshold; they may not approve a policy violation (spec §6.3 / §6.5).

Cross-language hashes

CHP content hashes are SHA-256 over canonical JSON (spec §3.1). Python emits whole floats as 100.0; JavaScript's JSON.stringify emits 100. This package formats Profile B hashed field sets the Python way so audit digests match the golden vectors and the Python reference.

Conformance adapter

npm run build
python3 path/to/spec/conformance/run_conformance.py \
  --adapter-cmd "node dist/adapter.js" \
  --profile B

Profile A ops are reported unsupported (SKIP), not FAIL.

Licence

MIT.