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Spronta MCP server

by spronta·io.github.spronta/mcp·v0.1.3·1 stars
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Upload, transform, and deliver images on a global CDN via AI agents.

B74/100grade B
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Safety scan
B74/100

full report

Adoption
New

1 stars41 downloads/wk

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If you have run it, two minutes of your experience saves the next person an afternoon.

Spronta tools (18, 10 write)

write = sends, deletes, buys or posts

Read from the package source without running it. The installed server may list more.

  • build_cdn_url

    Build a Spronta CDN URL with transform parameters. Does not make an API call.

  • create_presetwrite action

    Create a named transform preset. Use in CDN URLs with ?t=preset-name.

  • create_projectwrite action

    Create a new image project.

  • delete_imagewrite action

    Permanently delete an image from storage and database. Cannot be undone.

  • delete_presetwrite action

    Delete a transform preset.

  • delete_projectwrite action

    Permanently delete a project and all its images. This cannot be undone.

  • generate_signed_url

    Generate an HMAC-SHA256 signed CDN URL. Requires signing to be enabled.

  • get_project

    Get project details including usage stats (image count, total storage).

  • get_signing_config

    Get the URL signing configuration for a project (enabled, requireSignedUrls, masked secret).

  • get_usage

    Get daily usage metrics (requests, bandwidth, transforms) for a project.

  • list_images

    List images in a project with pagination.

  • list_presets

    List named transform presets. Presets can be used in CDN URLs with ?t=name.

  • list_projects

    List all Spronta image projects for your account.

  • update_imagewrite action

    Update an image's alt text and/or tags.

  • update_presetwrite action

    Update a preset's name or transforms.

  • update_projectwrite action

    Update a project's name or custom domain.

  • update_signingwrite action

    Enable/disable URL signing. When enabling, a new secret is generated and returned once.

  • upload_imagewrite action

    Upload an image from a URL. Fetches the image, uploads it to Spronta, and returns the CDN URL with blurhash. For base64, pass imageData instead of imageUrl.

Public scan report

scanner v0.1.10 · 2026-09-27 · same rubric, same numbers if you re-run it

no findings
  • Code scan7 source files scanned25/25
  • –Live reliabilityno gateway calls yet and no remote to proben/a
  • –Tool poisoningtools not inspected (local package is not executed); not countedn/a
  • Auth qualitylocal package, no credentials required12/15
  • Maintenancelast push 190 days ago4/15
  • Maintainer identityregistry namespace matches repository owner7/10
Overall 74/100. Components that don't apply are left out of the denominator. Any critical finding is an F.RubricAppeal a findingJSON

How Spronta compares

Against every graded MCP server, from our own scans and uptime checks. Updated after each scan run.

Safety score
74/100
higher than 40% of 48,255 servers
Tools
18
the typical server has 7
Tools that change things
56%
typical: 0%. Fewer write tools means less an agent can break
GitHub stars
1
more than 65% of 28,688 servers
Downloads a week
41
more than 33% of 12,191 servers with a package

What its tools let an agent do: 7 read · 4 create · 4 change · 3 delete

Install Spronta in Claude Code, Cursor or VS Code

Runs npx -y @spronta/mcp on your machine. Read the scan report first; the gateway never runs local packages.

claude mcp add mcp -- npx -y @spronta/mcp
Add to Cursor

What the publisher says

From the Spronta repository's README, as published. We do not edit it. Read it on GitHub

@spronta/mcp

MCP server for uploading, transforming, and serving images on a global CDN — directly from AI assistants.

Connect Claude, GPT, Cursor, Windsurf, or any MCP-compatible client to the Spronta Image CDN. Upload images from URLs or base64, apply real-time transforms (resize, crop, format conversion, smart crop, blurhash), create reusable presets, generate signed URLs, and monitor usage — all through natural language.

Why use this?

  • Upload images from AI — give your LLM an image URL and it uploads, optimizes, and returns a CDN link
  • Real-time transforms — resize, crop, convert to WebP/AVIF/JXL, smart crop with face detection
  • Global CDN delivery — images served from edge locations worldwide
  • Blurhash generation — automatic blur placeholders computed on upload
  • Signed URLs — HMAC-SHA256 signed URLs with expiration for private images
  • Named presets — create reusable transform configurations (e.g. thumbnail, hero, og-image)
  • No vendor lock-in — MIT licensed, open source

Quick start

Install

npm install -g @spronta/mcp
# or use directly
npx @spronta/mcp

Claude Code

claude mcp add spronta \
  -e SPRONTA_API_KEY=spronta_img_... \
  -e SPRONTA_PROJECT_ID=your-project-id \
  -- npx @spronta/mcp

Claude Desktop / Cursor / Windsurf

Add to your MCP configuration file:

{
  "mcpServers": {
    "spronta": {
      "command": "npx",
      "args": ["@spronta/mcp"],
      "env": {
        "SPRONTA_API_KEY": "spronta_img_...",
        "SPRONTA_PROJECT_ID": "your-project-id"
      }
    }
  }
}

Get your API key

  1. Sign up at app.spronta.com (free tier: 100 images)
  2. Create a project in the dashboard
  3. Copy your API key from project settings

Environment variables

18 tools available

Projects

Upload & Images

Transform Presets

URL Signing

Analytics & Utility

Example prompts

Once connected, just ask your AI:

> Upload this image to my project: https://example.com/photo.jpg

> Create a thumbnail preset: 200x200, cover crop, face detection, webp format

> How many requests did my project handle this week?

> Generate a signed URL for hero.jpg that expires in 1 hour

Shortened. The full README is on GitHub.

Nothing above is checked by us. What we check is on the safety report.

Spronta: common questions

Is Spronta MCP server safe?
Mostly: it is graded B (74/100). Read the Spronta safety report
How do I install Spronta?
It runs on your machine. Copy the Claude Code, Cursor, VS Code or Claude Desktop config from the install section.
Does Spronta need an API key?
Not as far as the registry entry and our scan can tell: no credentials are declared or required.
Is Spronta maintained?
The last commit was 227 days ago (2026-03-22). The latest release is v0.1.3.
How does Spronta compare with other MCP servers?
safety score 74/100 (higher than 40% of 48,255 servers); tools 18 (the typical server has 7); tools that change things 56% (typical: 0%. Fewer write tools means less an agent can break). Full comparison.