# Consume business logic without copying source | EasyNet

Source: https://easynet.run/cases/function-reuse

# Consume business logic without copying source

A consumer invokes publisher-owned logic through a stable typed interface.
[All source cases](https://easynet.run/cases)[Inspect the pinned project](https://github.com/EasyRemote/EasyRemote/tree/44c768ca26d0f92a5ab9d1d03342895c29c27dc6/gallery/projects/04_function_marketplace)

## The problem

After code is copied, maintenance ownership, the current version, and the source of each change quickly become unclear.

## What gets published

The team that maintains the logic publishes its smallest reusable function interface.

## What stays local

Source, implementation dependencies, and maintenance ownership.

## Business data crossing the call boundary

Typed arguments, released result, and invocation facts.

## What this shows

The publisher can improve one implementation while consumers keep the same contract.

## What it doesn't prove

Discovery does not imply pricing, ranking, payment, or legal marketplace terms.

## Public source evidence for this case

Evidence level

Source layout and declarations are anonymously inspectable

Pinned public EasyRemote revision

44c768ca26d0f92a5ab9d1d03342895c29c27dc6

Public inspection

[Public inspection](https://easynet.run/docs/source-check#run-check)

Expected check

Required files, Python syntax, and @node.register declaration are checked without installing dependencies

Runtime invocation

Not established by this source fixture; record separate discovery, Invocation, and terminal Receipt evidence

## Run in a compatible source workspace

This Provider/Client walkthrough requires compatible EasyRemote, EasyNet-Cli, and EasyNet-Axon sibling source checkouts, a compatible Hub, and a paired, running Runtime. The source is public; clean installation from public packages is not yet verified. Technical Alpha offers guided setup. Use the pinned EasyRemote revision below; this page does not pin the other components. Runtime admission still determines whether the caller may execute the function.

```
# From EasyRemote revision 44c768ca26d0f92a5ab9d1d03342895c29c27dc6
cd gallery/projects/04_function_marketplace
# Terminal 1
uv sync --frozen
uv run python node.py

# Terminal 2 (same project)
uv run python client.py
```

[Connect your own function](https://easynet.run/docs/connect/function)

Read the setup first. You need compatible sibling source checkouts, a compatible Hub, and a paired, running Runtime. Technical Alpha offers guided help; public-package clean installation is not yet verified.
[All source cases](https://easynet.run/cases)[Request technical alpha](https://easynet.run/pilot)