Webhookvty

pip install cognis-webhookvty
webhookvty scan .            # → prioritized findings in seconds

🔎 Example output

Real, reproducible output from the tool — runs offline:

$ webhookvty-emit --version
webhookvty 0.1.0

$ webhookvty-emit --help
usage: webhookvty [-h] [--version] [--format {table,json}] {verify} ...

Verify signed payment webhooks (Stripe/Adyen/HMAC) and detect replay / idempotency bugs. Standard library only.

positional arguments:
  {verify}
    verify              verify a batch of recorded webhook events from a JSON
                        file

options:
  -h, --help            show this help message and exit
  --version             show program's version number and exit
  --format {table,json}
                        output format (default: table)

examples:
  python -m webhookvty verify events.json
  python -m webhookvty verify - --format json < events.json

Blocks above are real webhookvty output — reproduce them from a clone.

Sample result format (illustrative values — run on your own data for real findings):

{
  "type": "indicator",
  "id": "urn:uuid:12345678-1234-5678-1234-567812345678",
  "name": "Suspicious DNS Query",
  "description": "DNS query for suspicious domain",
  "created_by_ref": "https://cognis-connect.com/users/12345",
  "modified_by_ref": "https://cognis-connect.com/users/12345",
  "created": "2023-02-15T14:30:00Z",
  "modified": "2023-02-15T14:30:00Z",
  "labels": ["suspicious", "dns"],
  "observables": [
    {
      "type": "domain-name",
      "value": "example.com"
    }
  ]
}

Usage — step by step

1. Install the CLI (console script webhookvty; also runnable as python -m webhookvty):

   pip install cognis-webhookvty
   

2. Verify a batch of recorded webhook events from a JSON file (- reads stdin):

   webhookvty verify events.json
   

3. Read the result as JSON for piping, and tune the Stripe replay window:

   webhookvty verify events.json --format json | jq .
   webhookvty verify events.json --tolerance 600   # seconds; -1 disables
   

4. Pin the clock for deterministic timestamp checks in tests with --now:

   webhookvty verify events.json --now 1700000000
   

5. Automate in CI — exit 0 = all valid, 1 = findings (bad sig / replay / idempotency), 2 = input error:

   - run: pip install cognis-webhookvty
   - run: cat events.json | webhookvty verify - --format json
   

Contents

• Why webhookvty? · Features · Quick start · Example · Architecture · AI stack · How it compares · Integrations · Install anywhere · Related · Contributing

Why webhookvty?

Webhook signature verification is the #1 silent payments security bug; a vendor-agnostic CLI that fuzzes replay/idempotency failures and runs in CI fixtures spreads fast among integrators.

webhookvty is single-purpose, scriptable, and self-hostable: point it at a target, get prioritized results in the format your workflow already speaks (table · JSON · SARIF), gate CI on it, and let agents drive it over MCP.

Features

• ✅ Verify Stripe
• ✅ Verify Adyen
• ✅ Verify Hmac
• ✅ Verify Event
• ✅ Analyze Batch
• ✅ Load Events
• ✅ Runs on Linux/macOS/Windows · Docker · devcontainer
• ✅ Ports in Python, JavaScript, Go, and Rust (ports/)

Quick start

pip install cognis-webhookvty
webhookvty --version
webhookvty scan .                       # scan current project
webhookvty scan . --format json         # machine-readable
webhookvty scan . --fail-on high        # CI gate (non-zero exit)

Example

$ webhookvty scan .
  [HIGH    ] WEB-001  example finding             (./src/app.py)
  [MEDIUM  ] WEB-002  another signal              (./config.yaml)

  2 findings · risk score 5 · 38ms

Architecture

flowchart LR
  IN[input] --> P[webhookvty<br/>analyze + score]
  P --> OUT[report]

Use it from any AI stack

webhookvty is interoperable with every popular way of using AI:

• MCP server — webhookvty mcp (Claude Desktop, Cursor, Cognis.Studio, uncensored-fleet)
• OpenAI-compatible / JSON — pipe webhookvty scan . --format json into any agent or LLM
• LangChain · CrewAI · AutoGen · LlamaIndex — wrap the CLI/JSON as a tool in one line
• CI / scripts — exit codes + SARIF for non-AI pipelines

How it compares

	Cognis webhookvty	Stripe CLI
Self-hostable, no account	✅	varies
Single command, zero config	✅	⚠️
JSON + SARIF for CI	✅	varies
MCP-native (AI agents)	✅	❌
Polyglot ports (JS/Go/Rust)	✅	❌
Open license	✅ COCL	varies

Built in the spirit of Stripe CLI / svix, re-framed the Cognis way. Missing a credit? Open a PR.

Integrations

Pipes into your stack: SARIF for code-scanning, JSON for anything, an MCP server (webhookvty mcp) for AI agents, and a webhook forwarder for SIEM/Slack/Jira. See docs/INTEGRATIONS.md.

Install — every way, every platform

pip install "git+https://github.com/cognis-digital/webhookvty.git"    # pip (works today)
pipx install "git+https://github.com/cognis-digital/webhookvty.git"   # isolated CLI
uv tool install "git+https://github.com/cognis-digital/webhookvty.git" # uv
pip install cognis-webhookvty                                          # PyPI (when published)
docker run --rm ghcr.io/cognis-digital/webhookvty:latest --help        # Docker
brew install cognis-digital/tap/webhookvty                             # Homebrew tap
curl -fsSL https://raw.githubusercontent.com/cognis-digital/webhookvty/main/install.sh | sh

Linux	macOS	Windows	Docker	Cloud
scripts/setup-linux.sh	scripts/setup-macos.sh	scripts/setup-windows.ps1	docker run ghcr.io/cognis-digital/webhookvty	DEPLOY.md (AWS/Azure/GCP/k8s)

Related Cognis tools

• panhound — Scans code, logs, fixtures, and S3 buckets for leaked PANs (Luhn-validated card numbers) and CVVs before they hit prod.
• fraudlens — Replays a stream of transactions against pluggable fraud rules and ML scorers, emitting precision/recall and alert volume from the terminal.
• obscan — Conformance and security linter for Open Banking / FAPI APIs: validates OAuth flows, consent scopes, and PSD2 endpoints against the spec.
• ledgerproof — Verifies double-entry ledger integrity and tamper-evidence by checking balance invariants and hash-chained journal entries.
• iso20022 — Validates, lints, and diffs ISO 20022 / pacs / camt payment messages and translates legacy MT into MX with schema-aware errors.
• tokenvault — Self-hostable PCI tokenization microservice and CLI that swaps PANs for format-preserving tokens and proves no raw card data persists.

Explore the suite → 🗂️ all 170+ tools · ⭐ awesome-cognis · 🔗 cognis-sources · 🤖 uncensored-fleet · 🧠 engram

Contributing

PRs, new rules, and demo scenarios are welcome under the collaboration-pull model — see CONTRIBUTING.md and SECURITY.md.

⭐ If webhookvty saved you time, star it — it genuinely helps others find it.

Interoperability

{} composes with the 300+ tool Cognis suite — JSON in/out and a shared OpenAI-compatible /v1 backbone. See INTEROP.md for the suite map, composition patterns, and reference stacks.

License

Source-available under the Cognis Open Collaboration License (COCL) v1.0 — free for personal, internal-evaluation, research, and educational use; commercial / production use requires a license ([email protected]). See LICENSE.

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