Requirements
- Target platform
- OpenClaw
- Install method
- Manual import
- Extraction
- Extract archive
- Prerequisites
- OpenClaw
- Primary doc
- SKILL.md
Tencent SkillHub ยท Developer Tools
Curl Http
Essential curl commands for HTTP requests, API testing, and file transfers.
skill openclawclawhub Free
Essential curl commands for HTTP requests, API testing, and file transfers.
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Package facts
- Download mode
- Manual review
- Package format
- ZIP package
- Source platform
- Tencent SkillHub
- What's included
- SKILL.md
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Trust & source
Release facts
- Source
- Tencent SkillHub
- Verification
- Indexed source record
- Version
- 1.0.0
Provenance
- Publisher
- Arnarsson
- Source page
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- Canonical URL
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Documentation
curl - HTTP Client
Command-line tool for making HTTP requests and transferring data.
GET requests
# Simple GET request curl https://api.example.com # Save output to file curl https://example.com -o output.html curl https://example.com/file.zip -O # Use remote filename # Follow redirects curl -L https://example.com # Show response headers curl -i https://example.com # Show only headers curl -I https://example.com # Verbose output (debugging) curl -v https://example.com
POST requests
# POST with data curl -X POST https://api.example.com/users \ -d "name=John&email=john@example.com" # POST JSON data curl -X POST https://api.example.com/users \ -H "Content-Type: application/json" \ -d '{"name":"John","email":"john@example.com"}' # POST from file curl -X POST https://api.example.com/users \ -H "Content-Type: application/json" \ -d @data.json # Form upload curl -X POST https://api.example.com/upload \ -F "file=@document.pdf" \ -F "description=My document"
Other HTTP methods
# PUT request curl -X PUT https://api.example.com/users/1 \ -H "Content-Type: application/json" \ -d '{"name":"Jane"}' # DELETE request curl -X DELETE https://api.example.com/users/1 # PATCH request curl -X PATCH https://api.example.com/users/1 \ -H "Content-Type: application/json" \ -d '{"email":"newemail@example.com"}'
Custom headers
# Add custom header curl -H "User-Agent: MyApp/1.0" https://example.com # Multiple headers curl -H "Accept: application/json" \ -H "Authorization: Bearer token123" \ https://api.example.com
Authentication
# Basic auth curl -u username:password https://api.example.com # Bearer token curl -H "Authorization: Bearer YOUR_TOKEN" \ https://api.example.com # API key in header curl -H "X-API-Key: your_api_key" \ https://api.example.com # API key in URL curl "https://api.example.com?api_key=your_key"
Timeouts & retries
# Connection timeout (seconds) curl --connect-timeout 10 https://example.com # Max time for entire operation curl --max-time 30 https://example.com # Retry on failure curl --retry 3 https://example.com # Retry delay curl --retry 3 --retry-delay 5 https://example.com
Cookies
# Send cookies curl -b "session=abc123" https://example.com # Save cookies to file curl -c cookies.txt https://example.com # Load cookies from file curl -b cookies.txt https://example.com # Both save and load curl -b cookies.txt -c cookies.txt https://example.com
Proxy
# Use HTTP proxy curl -x http://proxy.example.com:8080 https://api.example.com # With proxy authentication curl -x http://proxy:8080 -U user:pass https://api.example.com # SOCKS proxy curl --socks5 127.0.0.1:1080 https://api.example.com
SSL/TLS
# Ignore SSL certificate errors (not recommended for production) curl -k https://self-signed.example.com # Use specific SSL version curl --tlsv1.2 https://example.com # Use client certificate curl --cert client.crt --key client.key https://example.com # Show SSL handshake details curl -v https://example.com 2>&1 | grep -i ssl
Output formatting
# Silent mode (no progress bar) curl -s https://api.example.com # Show only HTTP status code curl -s -o /dev/null -w "%{http_code}" https://example.com # Custom output format curl -w "\nTime: %{time_total}s\nStatus: %{http_code}\n" \ https://example.com # Pretty print JSON (with jq) curl -s https://api.example.com | jq '.'
Range requests
# Download specific byte range curl -r 0-1000 https://example.com/large-file.zip # Resume download curl -C - -O https://example.com/large-file.zip
Downloading files
# Download file curl -O https://example.com/file.zip # Download with custom name curl -o myfile.zip https://example.com/file.zip # Download multiple files curl -O https://example.com/file1.zip \ -O https://example.com/file2.zip # Resume interrupted download curl -C - -O https://example.com/large-file.zip
Uploading files
# FTP upload curl -T file.txt ftp://ftp.example.com/upload/ # HTTP PUT upload curl -T file.txt https://example.com/upload # Form file upload curl -F "file=@document.pdf" https://example.com/upload
API testing
# Test REST API curl -X GET https://api.example.com/users curl -X GET https://api.example.com/users/1 curl -X POST https://api.example.com/users -d @user.json curl -X PUT https://api.example.com/users/1 -d @updated.json curl -X DELETE https://api.example.com/users/1 # Test with verbose output curl -v -X POST https://api.example.com/login \ -H "Content-Type: application/json" \ -d '{"username":"test","password":"pass"}'
Performance testing
# Measure request time curl -w "Total time: %{time_total}s\n" https://example.com # Detailed timing curl -w "\nDNS: %{time_namelookup}s\nConnect: %{time_connect}s\nTLS: %{time_appconnect}s\nTransfer: %{time_starttransfer}s\nTotal: %{time_total}s\n" \ -o /dev/null -s https://example.com
Common debugging
# Show request and response headers curl -v https://api.example.com # Trace request curl --trace-ascii trace.txt https://api.example.com # Include response headers in output curl -i https://api.example.com
Common Patterns
Quick JSON API test: curl -s https://api.github.com/users/octocat | jq '{name, bio, followers}' Download with progress bar: curl -# -O https://example.com/large-file.zip POST JSON and extract field: curl -s -X POST https://api.example.com/login \ -H "Content-Type: application/json" \ -d '{"user":"test","pass":"secret"}' | jq -r '.token' Check if URL is accessible: if curl -s --head --fail https://example.com > /dev/null; then echo "Site is up" else echo "Site is down" fi Parallel downloads: for i in {1..10}; do curl -O https://example.com/file$i.jpg & done wait
Useful Flags
-X: HTTP method (GET, POST, PUT, DELETE, etc.) -d: Data to send (POST/PUT) -H: Custom header -o: Output file -O: Save with remote filename -L: Follow redirects -i: Include headers in output -I: Headers only -v: Verbose output -s: Silent mode -S: Show errors even in silent mode -f: Fail silently on HTTP errors -k: Insecure (ignore SSL) -u: Basic authentication -F: Multipart form data -b: Send cookies -c: Save cookies -w: Custom output format
Tips
Use -s in scripts to suppress progress bar Combine -sS for silent but show errors Use -L for redirects (e.g., shortened URLs) Add -v for debugging Use jq to process JSON responses Save common requests as shell aliases or scripts Use --config for complex reusable requests
Documentation
Official docs: https://curl.se/docs/ Manual: man curl HTTP methods: https://developer.mozilla.org/en-US/docs/Web/HTTP/Methods
Category context
Code helpers, APIs, CLIs, browser automation, testing, and developer operations.
Source: Tencent SkillHub
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Package contents
Included in package
1 Docs
- SKILL.md