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Pqc Tools

by quantakrypto

Post-quantum readiness MCP server offering code scanning, explanation, migration guidance, and verification for quantum-vulnerable cryptography.

Install Pqc Tools

Pick your client, then add it in one click or paste the config.

STDIONode.js
~/Library/Application Support/Claude/claude_desktop_config.json
claude_desktop_config.json
{
  "mcpServers": {
    "quantakrypto-pqc-tools": {
      "command": "npx",
      "args": [
        "-y",
        "@quantakrypto/qscan"
      ],
      "env": {
        "QUANTAKRYPTO_API_KEY": "YOUR_VALUE_HERE",
        "MCP_OAUTH_CLIENT_ID": "YOUR_VALUE_HERE",
        "MCP_OAUTH_CLIENT_SECRET": "YOUR_VALUE_HERE"
      }
    }
  }
}

Settings → Developer → Edit Config, merge this into mcpServers, then fully quit and reopen Claude Desktop.

Values are written into the snippet above so you can paste it as is. They never leave your browser.

We couldn’t confirm it starts correctly

We ran the install command but it didn't respond within our test window — this can mean a slow first-time install rather than a real problem.

npx -y @quantakrypto/qscan

No response to initialize.

This is an experimental automated check and can have false negatives — missing environment variables, a slow cold install, etc. It doesn’t necessarily mean something’s wrong. Last checked 1mo ago.

Overview

This MCP server provides AI coding agents with tools to detect quantum-vulnerable cryptographic algorithms (e.g., RSA, ECDH, ECDSA) across multiple programming languages and infrastructure configurations. It explains the risks of harvest-now-decrypt-later attacks, offers migration guidance to NIST-approved post-quantum algorithms, verifies fixes, and checks dependencies. Use it to integrate post-quantum readiness into code editors, CI pipelines, or security audits.

Use cases

  • Scan codebases for quantum-vulnerable cryptography
  • Explain harvest-now-decrypt-later security risks
  • Provide migration guidance to NIST post-quantum standards
  • Verify remediation of vulnerable cryptographic usage
  • Assess infrastructure cryptography configurations

Key features

  • Detects vulnerable crypto in 14+ languages and infrastructure configs
  • Outputs SARIF, JSON, CBOM, evidence, and OpenVEX reports
  • Supports compliance mandates with build-fail enforcement
  • Includes tools for triage, remediation, and conformance testing
  • Operates with zero runtime dependencies (Node built-ins only)
  • Supports local stdio and hostable HTTP MCP server modes

Security & health

What it can reach and how reliably it runs — from our own checks, not the maintainer’s claims.

ActiveLast checked 2d ago

Recent health check succeeded.

21/21 checks healthy over the last 92d

Supply-chain signal

No high-severity advisories surfaced by our automated scan.

Critical 0High 0Medium 0Low 0

Scanned 6d ago via OSV.dev · @quantakrypto/qscan (npm)

Adoption & maintenance

Factual signals from GitHub, npm, and our automated checks — not a rating.

GitHub stars15Stargazers on the source repository.
npm downloads110Package downloads in the last 30 days.
Last commit25d agoMost recent push to the default branch.
Install checkInconclusiveDidn't respond in our test window — often a slow first install.
Directory activity3 viewsConfig copies, upvotes, and views on AllMCPs.

From the project README

quantakrypto-tools

CI License: Apache-2.0 OpenSSF Best Practices npm @quantakrypto/core npm @quantakrypto/qscan npm @quantakrypto/mcp npm @quantakrypto/sieve npm @quantakrypto/agent npm @quantakrypto/qprobe Node ≥20 TypeScript strict Runtime deps: 0 PQC targets: FIPS 203/204/205

Open-source post-quantum readiness tooling by quantakrypto. Find quantum-vulnerable cryptography in any codebase, wire post-quantum readiness into your editor and your CI, and conformance-test post-quantum implementations — with zero runtime dependencies (Node built-ins only).

Design goals: simple, clean, reusable code; zero runtime dependencies; everything documented, tested, and example-driven.

What's inside

ToolWhat it doesGet it
qScan (@quantakrypto/qscan)CLI that finds quantum-vulnerable crypto (RSA, (EC)DH, ECDSA, EdDSA, …) across 14 languages (JS/TS, Python, Go, Java/Kotlin/Scala, C#, Rust, Ruby, PHP, Elixir, C/C++, Swift, Objective-C, Dart, Solidity/Move/Cairo) and prints a readiness score. SARIF / JSON / CBOM / evidence (ISO 27001 A.8.24) / OpenVEX output, baselines, incremental & parallel scans. Compliance mandate gate: --mandate cnsa-2.0 / nist-ir-8547 reports each prohibited finding with its dated clause and fails the build on the mandate's deadlines (--lead-months, --fail-now). Opt-in --triage (BYOK LLM re-rank/explain) and a qremediate codemod CLI.npx @quantakrypto/qscan ./
MCP (@quantakrypto/mcp)Model Context Protocol server that gives AI coding agents post-quantum readiness tools (16 tools — scan, inventory, explain, suggest-hybrid, CBOM, plan-migration, triage, remediate, probe-endpoint, …). Local stdio + hostable HTTP.claude mcp add quantakrypto npx @quantakrypto/mcp
Sieve (@quantakrypto/sieve)Conformance battery for ML-KEM (FIPS 203), ML-DSA (FIPS 204), and SLH-DSA (FIPS 205) implementations, driven over a JSON stdin/stdout protocol.npx @quantakrypto/sieve --help
Action (@quantakrypto/action)GitHub Action that runs the qScan/Sieve/qProbe checks in CI, writes SARIF for code-scanning upload, annotates the diff, and fails the build only on new quantum-vulnerable crypto.uses: quantakrypto/pqc-tools/packages/action@v1
agent (@quantakrypto/agent)Optional, zero-dependency BYOK (bring-your-own-key) LLM client (native fetch; Anthropic + OpenAI-compatible adapters) that powers qScan --triage and qremediate --llm. Networked, key-holding — kept isolated (see also qProbe).npm i @quantakrypto/agent
qProbe (@quantakrypto/qprobe)Actively probes live TLS/SSH endpoints you own for post-quantum readiness — PQC-hybrid key exchange (X25519MLKEM768) and classical certificate posture. Gated behind an ownership attestation; reports, never modifies ("engine disposes"). See THREAT-MODEL.npx @quantakrypto/qprobe --i-own-this host

All of qScan, MCP, the Action, agent, and qProbe share the engine in @quantakrypto/core (npm i @quantakrypto/core) — detectors, the vulnerable-dependency DB, the readiness score, SARIF/JSON/CBOM/evidence/OpenVEX reporting, and the offline agent-plane primitives (context redactor, verify_fix gate, codemods, patch policy). Sieve is standalone: it tests other implementations and implements no crypto itself.

Infrastructure coverage. Beyond application source, the shared core engine carries config-scope detectors for Terraform/OpenTofu IaC and cloud KMS, JSON Web Keys, Kubernetes / cert-manager / Istio, CI/CD artifact & code signing (cosign/GPG/jarsigner/codesign/minisign), secrets at rest (SOPS/age, PGP, Sealed Secrets), message brokers (Kafka/MQTT), databases (pgcrypto, libpq sslmode), and JOSE/JWE key management — so qscan, the Action, and MCP flag infrastructure crypto with no extra install. qProbe adds the live-endpoint dimension (see the table above). The narrative anchor for infrastructure is harvest now, decrypt later: data and secrets captured today are decryptable once a CRQC exists.

Quick start

bash
# 1. Scan a codebase for quantum-vulnerable cryptography.
npx @quantakrypto/qscan ./

# 2. Give your AI coding agent post-quantum readiness tools.
claude mcp add quantakrypto npx @quantakrypto/mcp

# 3. Conformance-test a post-quantum implementation (adapter speaks the JSON protocol).
npx @quantakrypto/sieve --impl "node ./my-impl.js" --param ml-kem-768

# 4. Gate against a compliance mandate's dated deadlines (CNSA 2.0 / NIST IR 8547).
#    Verdicts also ride in --format json/sarif/evidence; --policy lets an org
#    acknowledge families it is knowingly migrating (exempt from early gating).
npx @quantakrypto/qscan ./ --mandate cnsa-2.0 [--policy .quantakrypto/crypto-policy.json]

Add the CI gate by dropping packages/action/examples/quantum-readiness.yml into .github/workflows/, or wire it up directly:

yaml
- uses: quantakrypto/pqc-tools/packages/action@v1
  with:
    path: "."
    severity-threshold: "high"

Each package README has the full options reference and more examples: qScan · MCP · Sieve · Action · core · agent.

Using quantakrypto alongside a PQC library (liboqs / OQS)

quantakrypto does not implement post-quantum cryptography, by design — it is the scanner, the CI gate, and the conformance harness you wrap around a real PQC library like liboqs / Open Quantum Safe. They compose: quantakrypto finds and gates classical crypto (qscan, the Action), tells you what to migrate to and in what order (qscan --tier, MCP plan_migration, qremediate), and conformance-tests the replacement (sieve runs any ML-KEM/ML-DSA/SLH-DSA implementation against FIPS 203/204/205, with exact-value KATs when you supply official NIST ACVP vectors). liboqs supplies the primitives.

See the worked end-to-end walkthrough — scan → migrate → verify → gate — in examples/liboqs-migration/.

Workspace layout

Code
quantakrypto-tools/
├── packages/
│   ├── core/     @quantakrypto/core    — shared engine (the contract lives in src/types.ts + src/index.ts)
│   ├── qscan/    @quantakrypto/qscan   — CLI
│   ├── mcp/      @quantakrypto/mcp     — MCP server (stdio now, HTTP scaffold for hosting)
│   ├── action/   @quantakrypto/action — GitHub Action
│   ├── sieve/    @quantakrypto/sieve   — conformance battery + JSON protocol
│   ├── agent/    @quantakrypto/agent   — opt-in BYOK LLM client (triage + remediation)
│   └── qprobe/   @quantakrypto/qprobe  — active TLS/SSH endpoint probing (gated; the only prober)
├── docs/         architecture, hosted-MCP design, improvement roadmap
└── examples/     end-to-end examples

Development

Requires Node ≥ 20.

Terminal
npm install        # links the workspaces
npm run build      # tsc --build (project references)
npm test           # node:test across all packages

The toolchain is intentionally tiny: TypeScript + tsx (to run node:test on .ts) are the only dev dependencies; there are no runtime dependencies.

Documentation & compliance

Full documentation lives in docs/:

  • Objectives & scope — what the toolchain is for, what each library does, the load-bearing decisions, and the deliberate scope boundaries. Start here.
  • Architecture decisions — the immutable "why" behind each load-bearing choice (zero deps, shared core contract, two-plane agent, …).
  • Standards & compliance — what the tools touch and could align to: NIST FIPS 203/204/205, SP 800-208, CNSA 2.0, SARIF, CWE, ISO/IEC 27001 (A.8.24), Common Criteria, FIPS 140-3, EU DORA/NIS2, US M-23-02 / NSM-10, and OSS assurance (SLSA, OpenSSF Scorecard, SPDX/REUSE).
  • Governance: Contributing · Security · Code of Conduct · Changelog.

License

Apache-2.0. The methodology is open; the assessments, attestation reports, and deliverables are where the quantakrypto practice lives.

Reviews

No reviews yet — be the first to share how it worked for you.

Frequently Asked Questions about Pqc Tools

It detects RSA, ECDH, ECDSA, EdDSA, DH, and related classical algorithms vulnerable to quantum attacks.

It provides guidance on migrating to NIST-approved ML-KEM, ML-DSA, SLH-DSA algorithms and hybrid approaches.

Yes, it supports SARIF output and compliance mandates that can fail builds on prohibited findings.

No, it has zero runtime dependencies beyond Node.js built-in modules.

It can run locally via stdio or be hosted as an HTTP endpoint with OAuth authentication.

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