Automation
How to Use Webhooks to Trigger Shell Scripts the Safe Way
Trigger a shell script from a webhook safely: verify the HMAC signature, avoid passing request data to the shell, lock down the user, and respond fast.
6 min read
Tag
http
12 posts
APIs
How to Cache API Responses in Shell Scripts the Right Way
Cache API responses in shell scripts: a keyed file cache with a TTL, conditional requests with ETag, atomic writes, stale fallback and what not to cache.
7 min read
APIs
How to Handle Time Zones and Timestamps in API Scripts
Handle API timestamps and time zones in scripts: ISO 8601 in UTC, epoch seconds versus milliseconds, GNU and BSD date, jq and daylight saving traps.
7 min read
APIs
How to Upload and Download Large Files Through APIs
Upload and download large files through APIs with curl: stream, resume, retry, multipart and pre-signed URLs, size limits, checksums and progress.
7 min read
Performance
How to Avoid Repeated API Calls in Scripts With Real Output
Avoid repeated API calls in scripts: fetch once, pass data along, conditional requests with ETags, batching, pagination limits and a request counter.
6 min read
APIs
How to Use GraphQL From the Command Line Step by Step
Query a GraphQL API from the command line with curl, jq and gh api graphql: build JSON safely, use variables, introspect, paginate and check errors.
6 min read
APIs
How to Use OpenAPI Specs From the Command Line the Right Way
Use an OpenAPI spec from the command line: list endpoints with jq, lint with Redocly, call APIs with restish, mock with Prism and diff versions.
7 min read
APIs
curl vs httpie vs xh for API Work and Which to Pick
Compare curl, HTTPie and xh for API work: JSON request syntax, output formatting, sessions, speed, availability and which fits scripts.
6 min read
APIs
What Are HTTP Status Codes Developers Actually Meet
The HTTP status codes developers actually meet, grouped by meaning, with what scripts should do for each, retries, redirects and curl options.
6 min read
APIs
What Is REST and How It Differs From RPC and GraphQL
REST, RPC and GraphQL compared: resources versus actions versus queries, caching, versioning, tooling with curl, error handling and how to choose.
6 min read
CI/CD
How to Trigger CI From Git Hooks and Webhooks the Right Way
Trigger CI from Git hooks and webhooks the right way: server-side post-receive, host webhooks, API dispatch calls, authentication and safe retries.
6 min read
APIs
How to Keep API Keys Out of Scripts and Repos the Right Way
Keep API keys out of scripts and repositories: env files, secret managers, scanning for leaks, narrow scopes and what to do after a key escapes.
7 min read