tmpin
Adds stdin support to any CLI app that accepts file input.
Pricing
Free tier
Flat rate
Adoption
↘CoolingLicense
Open Source
Data freshness
Aging · Jun 8, 2026Overview
What is tmpin?
tmpin is a utility that enables command-line applications to accept standard input as if it were a file, streamlining the process of handling data in pipelines and scripts. This tool simplifies workflows for developers who frequently use CLI tools with file inputs.
Key differentiator
“tmpin stands out as a lightweight utility that bridges the gap between file-based input and dynamic data streams in command-line environments, offering simplicity and flexibility without additional overhead.”
Capability profile
Capability Radar
Honest assessment
Strengths & Weaknesses
↑ Strengths
↓ Weaknesses
tmpin is primarily designed for JavaScript/Node.js environments and may not work seamlessly with other languages without additional configuration or wrappers.
Setting up tmpin in environments that are not the typical Node.js ecosystem (such as Docker containers, Windows Subsystem for Linux) can be cumbersome and require manual adjustments.
tmpin may introduce additional latency or memory usage when processing very large datasets due to its method of converting stdin into a file-like object.
Fit analysis
Who is it for?
✓ Best for
Developers who need to integrate CLI tools into pipelines that generate dynamic input data.
Script authors looking for a way to simplify the handling of streamed or dynamically generated data with file-based CLI utilities.
✕ Not a fit for
Projects requiring complex, real-time data processing beyond simple stdin redirection.
Users needing advanced features like multi-threading or parallel processing within their CLI applications.
Cost structure
Pricing
Free Tier
Available
Open source — free to use
Starts at
$0
Model
Flat rate
Enterprise
None
Performance benchmarks
How Fast Is It?
Ecosystem
Relationships
Integrations
Next step
Get Started with tmpin
Step-by-step setup guide with code examples and common gotchas.