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Generate images with Replicate and Flux

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MCP Tool — Replicate (Flux) Image Generator → WordPress/Twitter

Generates images via Replicate Flux models and uploads to WordPress (and optionally Twitter/X). Built to act as an MCP module that other agents/workflows call for on-demand image creation.

  • Models configured in this workflow:
    black-forest-labs/flux-schnell, black-forest-labs/flux-dev, black-forest-labs/flux-1.1-pro
  • Switch rationale: lower cost 💰, broader model choice 🎯, full control of parameters ⚙️
  • Leonardo API credits cannot be used in the web UI 🙅‍♂️; separate spend for API vs UI

Links:

📥 Inputs

Field Type Description
prompt string Text description for the image
slug string Filename slug for WP media
model string One of the configured Flux models

Example:

{
	"prompt":"Joker watching a Batman movie on his laptop",
	"slug":"joker-watching-batman",
	"model":"black-forest-labs/flux-dev"
}

📤 Output

{
  "public_image_url": "https://your-wp.com/wp-content/uploads/2025/08/img-joker-watching-batman.webp",
  "wordpress": {...},
  "twitter": {...}
}

🔄 Flow

  1. Trigger with prompt, slug, model
  2. Build model payload (quality/steps/ratio/output format)
  3. Call Replicate: POST /v1/models/{model}/predictions (Prefer: wait)
  4. Download the generated image URL
  5. Upload to WordPress (returns public URL)
  6. Optional: upload to Twitter/X
  7. Return URL + metadata

🤖 MCP Use at Scale (emp0.com)

Operational pattern: I currently use this setup for my blog where i generate ~300 posts/month, each with 4 images (banner + 2 to 3 inline images) → ~1,000 images/month produced by this MCP.

💡 Hybrid Cost-Optimized Setup:

  • High-priority images (banners, main visuals): Generated using Flux Dev on Leonardo for slightly better prompt adherence.
  • Low-priority images (inline blog visuals): Generated using Flux Schnell on Replicate for maximum cost efficiency.

💰 Pricing Comparison (per image)

Leonardo per-image cost uses API Basic math: $9 / 3,500 credits = $0.0025714 per credit.

  • Flux Schnell (Leonardo) = 7 credits
  • Flux Dev (Leonardo) = 7 credits
  • Flux 1.1 Pro equivalent in Leonardo = Leonardo Phoenix based on my experience = 10 credits
Flux Model Replicate Leonardo API*
flux-schnell $0.0030 (=$3/1,000) $0.0180 (7 × $0.0025714)
flux-dev $0.0250 $0.0180 (7 × $0.0025714)
flux-1.1-pro / Phoenix $0.0400 $0.0257 (10 × $0.0025714)

Replicate pricing: https://replicate.com/pricing
Leonardo pricing: https://leonardo.ai/pricing/
Leonardo API usage: https://docs.leonardo.ai/docs/commonly-used-api-values

📊 Monthly Cost Example (1,000 images/month)

Mix: 300 ×flux-dev on Leonardo, 700 ×flux-schnell on Replicate.

Platform/Model Images Price per Image Total
Leonardo flux-dev 300 $0.0180 $5.40
Replicate flux-schnell 700 $0.0030 $2.10
Total Monthly Spend 1000 — $7.50

💵 If using Leonardo for both:

  • 300 × $0.0180 = $5.40
  • 700 × $0.0180 = $12.60
  • Total = $18.00

Savings: $10.50/month (≈58% lower) with the hybrid setup.

📌 Notes

  • More Replicate models can be added in Code1 node.
  • Parameters tuned for aspect ratio, inference steps, quality, guidance.
  • Leonardo credit model is API-only; credits are not spendable in Leonardo's web UI.