n8n-nodes-btcmatic

n8n community node for BTCMatic — the Bitcoin event engine. React to rule fires inside n8n, manage rules programmatically, run backtests, and push external events (TradingView alerts, anything) into webhook-triggered BTCMatic rules.

BTCMatic is the Bitcoin sense for your automations: on-chain, mempool-fee, price and schedule triggers evaluate inside BTCMatic's engine; n8n orchestrates what happens around them.

Nodes

BTCMatic Trigger

Starts a workflow when a BTCMatic rule fires.

• Registers its n8n webhook URL as a BTCMatic webhook endpoint automatically (create / check / revoke lifecycle — no manual copy-pasting of URLs).
• Every delivery is verified against BTCMatic's HMAC signature (X-BTCMatic-Signature, t=<ts>,v1=<hex> over "<ts>.<body>", ±300 s) using the endpoint's one-time signing secret captured at registration. Unsigned or invalid deliveries are rejected with 401 unless you explicitly opt out.
• The emitted item carries the full delivery payload (claim_key, rule_id, rule_name, event, evaluation trace, optional outcome) plus delivery_key — stable across retries, use it for dedup.

After activating the workflow, attach a webhook action pointing at the registered URL to any of your BTCMatic rules (the rule editor lists registered endpoints).

BTCMatic (action node)

Send Event posts a flat JSON payload to a BTCMatic inbound hook (POST /hooks/{id}/{token}), optionally HMAC-signed and idempotency-keyed — this is how an n8n workflow wakes a webhook-triggered BTCMatic rule. The rule still evaluates its own conditions inside the engine; an inbound event can never bypass them.

Credentials

Create an API key in the BTCMatic web app under Settings → API keys (Pro and Power plans). The credential needs:

• API Key — btcm_…, shown once at creation.
• Base URL — defaults to https://api.btcmatic.com.

The credential test calls GET /me.

Scope: management + dry-run, by design

BTCMatic API keys are deliberately capped: they can list/pause/resume rules, create and update rules, read fires/orders/backtests and manage hooks — but they can never create or enable a live exchange-order rule (422 api_key_live_forbidden), and API-created order rules never auto-promote out of dry-run. Promotion to live happens only in the web app. Even if your n8n instance or this credential is fully compromised, your funds cannot be spent through it.

Installation

Self-hosted n8n: Settings → Community Nodes → Install → n8n-nodes-btcmatic.

Requires n8n ≥ 1.0. No runtime dependencies.

Self-hosted note: BTCMatic's outbound webhook dispatch refuses private/LAN addresses and requires HTTPS — your n8n webhook URL must be publicly reachable over HTTPS for the trigger node (n8n Cloud works out of the box).

Development

pnpm install
pnpm run dev     # linked dev n8n instance
pnpm run lint
pnpm run build

Releases are published to npm via GitHub Actions with provenance (pnpm run release tags and pushes; the workflow publishes).

Resources

• BTCMatic n8n integration guide: https://btcmatic.com/integrations/n8n
• BTCMatic API reference (OpenAPI): https://api.btcmatic.com/docs
• n8n community nodes: https://docs.n8n.io/integrations/community-nodes/

License

MIT