---
title: "HAR-Derived API Client - Air Market"
description: "You want to get data from a website in code, but it has no public API you can use. This records the background requests the site makes while you use it, then builds an HTTP client from them. Use it w…"
canonical: "https://airmarket.ai/app/har-derived-api-client"
---

[Air Market](/) / [Automation](/category/automation) / HAR-Derived API Client

Skill by [Nous Research](/@nousresearch)

# HAR-Derived API Client

Turn a website's background requests into a client you can call

## What this does

You want to get data from a website in code, but it has no public API you can use. This records the background requests the site makes while you use it, then builds an HTTP client from them. Use it when you would otherwise be copying requests out of the browser by hand.

### Top 3 things it does for you

- Record the requests a website makes while I use it
- Build an HTTP client from that recording

## Information

**HAR-Derived API Client at a glance**

|  |  |
| --- | --- |
| Kind | Skill |
| Publisher | [Nous Research](/@nousresearch) |
| Category | [Automation](/category/automation) |
| Works with | Agent Skills - an open standard supported by 40+ agents |
| Languages | en |
| Version | 0.1.0 |
| Size | 23 KB |
| Licence | MIT |
| Repository | [NousResearch/hermes-agent](https://github.com/NousResearch/hermes-agent/tree/bfff32ae8c6a9c585431997a6cc3d791b6ec9af5/optional-skills/web-development/har-derived-api-client) |
| GitHub stars | 261,931 (as of Nov 2026) |

## Security report

**Verified.** AIR scanned this exact version of HAR-Derived API Client and flagged nothing. AIR's verdict: **safe**.

**What HAR-Derived API Client's check was run against**

|  |  |
| --- | --- |
| Commit | bfff32ae8c6a9c585431997a6cc3d791b6ec9af5 |
| Content hash | a881be3f4097bb760d7582eb8e535c05bb9d674fbf284328003b8ff49a293806 |
| Files read | [Browse the files at this exact commit](https://github.com/NousResearch/hermes-agent/blob/bfff32ae8c6a9c585431997a6cc3d791b6ec9af5/optional-skills/web-development/har-derived-api-client/SKILL.md) |

A scan is named by the exact content it read, not by a version number. A different version is a different artifact, and nothing here applies to a version AIR has not scanned.

[Read the full security report for HAR-Derived API Client](/security/har-derived-api-client)

## About HAR-Derived API Client

Records a site's background XHR requests into a HAR file, then builds an HTTP client from that recording.

## What's inside

- SKILL.md - instructions
- scripts/har_capture_cdp.py - script
- scripts/har_capture.py - script
- scripts/har_to_client.py - script

## Questions

### Is HAR-Derived API Client safe to install?

AIR scanned this exact version of HAR-Derived API Client and flagged nothing. AIR's verdict: safe. The verdict is named by the content that was read, at commit bfff32ae8c6a, so it cannot drift onto a version nobody scanned. The full report is at https://airmarket.ai/security/har-derived-api-client.

### How do I install HAR-Derived API Client?

Open https://airmarket.ai/app/har-derived-api-client on Air Market and use the install action: Air Market hands Claude a prompt naming this exact skill, and Claude sets it up. Source, pinned to the exact commit this listing describes: https://github.com/NousResearch/hermes-agent/tree/bfff32ae8c6a9c585431997a6cc3d791b6ec9af5/optional-skills/web-development/har-derived-api-client. Install from that link, not the branch.

## Related on Air Market

- [More Automation listings](/category/automation)
- [Everything by Nous Research](/@nousresearch)

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Canonical URL: <https://airmarket.ai/app/har-derived-api-client>