Transfa

[transfa]

Dead-simple file sharing for developers and AI agents.
Upload with one command. Share with a link. No account required.

[npm version] [npm downloads] [node version] [MIT License] [Hosted service]

$ tf upload model.gguf✓ Uploaded  model.gguf  (4.2 GB)  →  https://transfa.sh/f/xK9mRp  SHA-256    a3f8c2...d91b  Expires    in 7 days

Why transfa?

Most file-sharing tools are built for humans clicking through UIs. transfa is built for the terminal — designed to be called from shell scripts, CI pipelines, and AI agents (Claude, GPT, Cursor, etc.) that need to move files without friction.

• No signup required — just install and upload
• Any format, any size — up to 100 GB; ML models, archives, binaries, code, media
• Built for agents — JSON API, SHA-256 checksums, idempotent uploads
• Password protection, download limits, TTL — full control over every link
• 100+ formats detected — MIME type auto-detection including .gguf, .safetensors, .parquet, .ipynb, and more

Install

Node.js / CLI

npm install -g transfa

Python SDK

pip install transfa

MCP server (Claude, Cursor, any MCP-compatible agent)

npx -y transfa-mcp

Or use the raw install script:

curl -fsSL https://transfa.sh/install | sh

Quick start

# Upload a file (no account needed)tf upload photo.jpg
# Upload with custom TTL and passwordtf upload secret.zip --ttl 24h --password hunter2
# Upload and pipe the URL to clipboardtf upload bundle.tar.gz | grep url | awk '{print $2}' | pbcopy
# Download a filetf download https://transfa.sh/f/xK9mRp
# List your uploadstf list
# Delete an uploadtf delete xK9mRp

GitHub Actions

Upload build artifacts, coverage reports, and any CI output straight from your workflow:

- uses: colapsis/transfa-action@v1  id: upload  with:    file: ./dist/report.pdf    api-key: ${{ secrets.TRANSFA_API_KEY }}
- run: echo "${{ steps.upload.outputs.agent-link }}" >> $GITHUB_STEP_SUMMARY

All five outputs are available after the step: id, agent-link, human-link, sha256, expires-at.

See colapsis/transfa-action for the full input reference and more examples (password-protected links, self-hosted instances, single-download limits).

API

transfa is fully REST. Every operation the CLI does, you can do with curl or any HTTP client.

Upload

curl -X POST https://transfa.sh/api/upload \  -H "Authorization: Bearer $TF_KEY" \  -F "[email protected]" \  -F "ttl=7d"

{  "id": "xK9mRp",  "url": "https://transfa.sh/f/xK9mRp",  "download_url": "https://transfa.sh/api/download/xK9mRp",  "filename": "model.gguf",  "bytes": 4512345678,  "sha256": "a3f8c2...d91b",  "expires_at": "2026-05-21T12:00:00.000Z"}

Upload options (form fields or headers):

Download

# Direct download (no auth required)curl -L https://transfa.sh/api/download/xK9mRp -o model.gguf
# Password-protectedcurl -L "https://transfa.sh/api/download/xK9mRp?password=hunter2" -o secret.zip

File info

curl https://transfa.sh/api/download/info/xK9mRp

{  "id": "xK9mRp",  "filename": "model.gguf",  "bytes": 4512345678,  "sha256": "a3f8c2...d91b",  "mime_type": "application/octet-stream",  "download_count": 3,  "has_password": false,  "expires_at": "2026-05-21T12:00:00.000Z",  "active": true}

List uploads

curl https://transfa.sh/api/upload \  -H "Authorization: Bearer $TF_KEY"

Delete

curl -X DELETE https://transfa.sh/api/upload/xK9mRp \  -H "Authorization: Bearer $TF_KEY"

Supported formats

Over 100 file types with correct MIME detection — including types not in standard MIME databases:

Any other format is accepted as application/octet-stream — nothing is blocked.

Plans

→ See full pricing

MCP server (Claude, Cursor, and any MCP-compatible agent)

transfa ships an MCP server that lets Claude, Cursor, and any MCP-compatible agent upload and share files autonomously — no shell commands, no infrastructure setup.

npx -y transfa-mcp

Claude Desktop config

Add to ~/Library/Application Support/Claude/claude_desktop_config.json:

{  "mcpServers": {    "transfa": {      "command": "npx",      "args": ["-y", "transfa-mcp"],      "env": {        "TRANSFA_API_KEY": "your-api-key"      }    }  }}

The API key is optional — the server works in guest mode without one (10 MB / 24h limit).

Available MCP tools

Example agent workflow

When Claude has transfa as an MCP tool, it can:

1. Generate a report → call upload → get a link → paste the link in the conversation
2. Pass a file to another agent by sharing the agent_link
3. Clean up with delete_upload when done

Python SDK

import transfa
# Uploadresult = transfa.upload("model.pt", ttl="24h", run_id="run-42", artifact=True)print(result.url, result.sha256)
# Download (SHA-256 verified)transfa.download(result.id, output="model.pt")
# Provenance manifest for a runmanifest = transfa.run_artifacts("run-42")
# Asyncasync with transfa.AsyncClient() as client:    result = await client.upload("model.pt")

See python/README.md for the full API reference.

Use with AI agents (script/subprocess)

transfa is also designed to be called from shell scripts, CI pipelines, and agents that prefer subprocess calls:

import subprocess, json
result = subprocess.run(    ["tf", "upload", "output.csv"],    capture_output=True, text=True)data = json.loads(result.stdout)print(data["url"])  # https://transfa.sh/f/xK9mRp

Or use the REST API directly — no SDKs, no auth flows, just HTTP.

Self-hosting

git clone https://github.com/colapsis/transfa.gitcd transfacp .env.example .env          # fill in your keysnpm install --prefix servernpm install --prefix clinpm run build --prefix frontendpm2 start ecosystem.config.cjs

Requirements: Node.js 18+, nginx (for SSL/proxy)

See nginx/transfa.conf for a production-ready nginx config.

Environment variables

Security

Found a vulnerability? Please email [email protected] or see SECURITY.md.

Do not open a public issue for security reports.

License

MIT — © 2026 transfa contributors