linktree-deploy-integration

Linktree Deploy Integration

Overview

Deploy a containerized Linktree integration service that synchronizes profile data, manages link collections, and handles appearance customizations through the Linktree API. This skill covers Docker multi-stage builds optimized for the Linktree SDK, environment configuration for API authentication, health checks that verify Linktree API connectivity, and rolling deployment strategies with zero-downtime link management updates.

Prerequisites

• Docker 24+ and Docker Compose v2 installed
• Valid LINKTREE_API_KEY from the Linktree developer portal
• Node.js 20 LTS (build stage)
• Network access to api.linktr.ee on port 443
• Target deployment host with at least 256MB available memory

Docker Configuration

FROM node:20-slim AS builder
WORKDIR /build
COPY package*.json tsconfig.json ./
RUN npm ci
COPY src/ ./src/
RUN npm run build

FROM node:20-slim
RUN groupadd -r linktree && useradd -r -g linktree -m appuser
WORKDIR /app
COPY --from=builder /build/dist ./dist/
COPY --from=builder /build/node_modules ./node_modules/
COPY package*.json ./
RUN npm prune --production
USER appuser
EXPOSE 3000
HEALTHCHECK --interval=30s --timeout=5s --retries=3 \
  CMD curl -f http://localhost:3000/health || exit 1
CMD ["node", "dist/index.js"]

Environment Variables

LINKTREE_API_KEY="lt_live_xxxxxxxxxxxxx"   # Linktree API key from developer portal
LINKTREE_BASE_URL="https://api.linktr.ee"  # API base URL
LINKTREE_PROFILE_ID=""                     # Target profile identifier
LOG_LEVEL="info"                           # debug | info | warn | error
NODE_ENV="production"
PORT="3000"

Health Check Endpoint

import express from "express";

const app = express();

app.get("/health", async (_req, res) => {
  try {
    const response = await fetch(`${process.env.LINKTREE_BASE_URL}/v1/profile`, {
      headers: { Authorization: `Bearer ${process.env.LINKTREE_API_KEY}` },
    });
    if (!response.ok) throw new Error(`Linktree API returned ${response.status}`);
    const profile = await response.json();
    res.json({ status: "healthy", profile: profile.username, links: profile.links?.length ?? 0 });
  } catch (err) {
    res.status(503).json({ status: "unhealthy", error: (err as Error).message });
  }
});

Deployment Steps

Step 1: Build Image

docker build -t linktree-integration:$(git rev-parse --short HEAD) .

Step 2: Run Container

docker run -d --name linktree-svc \
  --env-file .env.production \
  -p 3000:3000 \
  --restart unless-stopped \
  linktree-integration:$(git rev-parse --short HEAD)

Step 3: Verify Health

curl -s http://localhost:3000/health | jq .
# Expect: { "status": "healthy", "profile": "your-username", "links": 12 }

Step 4: Rolling Update

docker pull linktree-integration:latest
docker stop linktree-svc && docker rm linktree-svc
docker run -d --name linktree-svc --env-file .env.production -p 3000:3000 linktree-integration:latest

Rollback Procedure

# List recent images
docker images linktree-integration --format "{{.Tag}} {{.CreatedAt}}" | head -5
# Roll back to previous tag
docker stop linktree-svc && docker rm linktree-svc
docker run -d --name linktree-svc --env-file .env.production -p 3000:3000 linktree-integration:<previous-tag>

Error Handling

Issue	Cause	Fix
401 on health check	Expired or invalid LINKTREE_API_KEY	Rotate key in Linktree developer portal and update .env
Container OOM killed	Link sync processing large profile trees	Increase memory limit to 512MB with --memory=512m
ECONNREFUSED to API	DNS or firewall blocking api.linktr.ee	Verify outbound HTTPS access and DNS resolution
Health check timeout	Slow API response under rate limiting	Increase HEALTHCHECK --timeout to 10s and add retry backoff
Profile not found	Invalid LINKTREE_PROFILE_ID	Verify profile ID exists via GET /v1/profile manually

Resources

• Linktree Developer Docs

Next Steps

See linktree-webhooks-events.