Create a reusable Copilot profile by choosing its host, writing an agent Markdown file in the supported location, and describing the role and tools it needs. This guide builds a LoadRunner/VuGen-focused example. It is an instruction profile—not a LoadRunner integration, a copy of VuGen, or proof that Copilot can execute scripts or run load tests.
What a custom agent does—and what it does not do
A custom agent is a reusable, role-specific configuration for Copilot. For GitHub Copilot cloud agent, GitHub describes a profile as a Markdown file containing YAML frontmatter and a Markdown prompt body: frontmatter sets identity and capabilities, while the body provides behavioral instructions. The file can also specify tool access and, where supported, MCP configuration. See GitHub’s custom agent configuration reference.
For this example, the role is to help explain or draft LoadRunner/VuGen virtual-user script work using context supplied by the developer. SAP Help’s 2023 Virtual User Generator Installation Guide describes VuGen as a tool for creating virtual-user (Vuser) scripts, primarily through recording; it says those scripts emulate users without a graphical user interface through direct function calls. That description supplies the subject matter, not evidence of a Copilot-to-VuGen connection. The profile itself does not provide VuGen or establish that the agent can execute a script.
Choose the Copilot host before writing the profile
File locations and supported frontmatter differ by host, so first decide where the agent will run. The GitHub cloud-agent instructions and VS Code documentation describe distinct workflows.
What’s actually slowing this PC down?
Pick the symptom - the matching free tool is one click away.
#1 Best Overall
- Read Before You Buy — No Video Output: These adapters support charging and USB 2.0 data transfer, but cannot transmit video signals. Except for standard USB webcams (which use USB data only), they are not compatible with HDMI/DisplayPort cables, video-capable USB-C hubs, or docking stations with video output.
- Convert USB-A Ports to USB-C: Designed to connect USB-C earphones, cables, flash drives, card readers, and other USB-C accessories to standard USB-A ports. Plug-and-play with no drivers or software required.
- Aluminum Alloy Housing: Built with a sturdy aluminum alloy shell that aids in heat dissipation and protects against daily wear and scratches. Designed to maintain a stable and secure connection.
- Compact & Travel-Friendly: The ultra-compact design allows the adapter to stay plugged into your device without blocking adjacent ports or adding bulk, reducing wear and tear on your original USB ports.
- 12-Month Warranty: Backed by a 12-month manufacturer warranty for peace of mind. Designed to meet strict quality control standards for reliable everyday performance.
| Use case | Profile location and format | Important distinction |
|---|---|---|
| GitHub Copilot cloud agent for a repository | .github/agents/my-agent.agent.md |
GitHub’s creation guide says the profile must be committed and merged into the repository’s default branch before it appears in that repository’s agent picker. |
| Organization- or enterprise-level GitHub cloud-agent profile | An agents directory at the corresponding organization or enterprise root scope |
Use the scope appropriate to who should receive the profile; consult GitHub’s creation guide for the applicable setup. |
| VS Code workspace agent | .github/agents; a .agent.md file with optional YAML frontmatter and an instruction body |
Available controls depend on the selected agent harness. |
| VS Code user-level agent | ~/.copilot/agents or ~/.claude/agents |
Use a user-level location when the definition is for your own workspaces rather than shared with repository contributors. |
For VS Code, Microsoft documents both manual file creation and the Agent Customizations editor. Its guidance recommends checking generated frontmatter, tools, and instructions rather than assuming the editor produced the right profile for the chosen harness. See Microsoft’s custom agents documentation. For GitHub cloud agent, use the GitHub custom-agent creation guide.
Create a repository-level GitHub cloud-agent profile
- Choose the repository and scope. This walkthrough uses a repository-level profile so it can be shared with that repository’s contributors. Create
.github/agentsif it does not already exist. - Create the file. In that directory, add
loadrunner-helper.agent.md. GitHub’s guide uses the filename patternmy-agent.agent.md. - Add a concise description and, if useful, a display name. GitHub’s configuration reference marks
descriptionas required. Make it clear which tasks should use the profile; a friendlynamecan make it easier to recognize in a picker. - Choose tools deliberately. If you omit
tools, GitHub says all tools available to the agent are enabled. An explicit list narrows access, andtools: []disables tools. A script helper that only needs repository context should not receive broader access without a reason. Confirm tool names accepted by the host and repository; availability varies by environment. MCP tools can be named or namespaced when the host supports them. - Write the instructions. Tell the agent what role it has, what context to ask for, what output to produce, and how to distinguish assumptions from verified facts.
- Commit and merge the profile. In GitHub’s cloud-agent workflow, it becomes available in the repository’s picker after the file is merged into the default branch.
- Select and review it. GitHub documents selecting a custom agent in Copilot CLI with
/agent, a prompt reference, or a command-line argument. In VS Code, select the intended harness and agent in the chat or Agents interface. Try representative tasks and inspect both responses and tool use before relying on the profile.
Starter file: LoadRunner/VuGen helper
This example uses GitHub-style frontmatter and an explicit, limited tool list. It is an editorial example, not a vendor-provided template or a tested profile. Confirm that the field names and tool names are supported by the host where you plan to use it.
Rank #2
- 5-in-1 USB-C Hub: Experience comprehensive connectivity featuring a Power Delivery input, two USB-A 2.0 ports, a USB-A 3.0 port, and an HDMI port. (Note: The USB-C power delivery input port is only for connecting an external wall charger to power your laptop and cannot power peripheral devices.)
- 90W Pass-Through Charging: Achieve optimal charging with 90W pass-through power to your laptop, supported by a total input of 100W, with the hub reserving 10W for operational efficiency. (Note: Wall charger not included.)
- Quick Data Transfers: Accelerate your productivity with rapid data transfers using a high-speed 5Gbps USB 3.0 port and two 480Mbps USB 2.0 ports.
- 4K HDMI Display: Enhance your visual experience with a hub capable of delivering 4K resolution at 30Hz in both mirror and extend modes. Please note that this hub is compatible with MacBook (macOS 12 and newer), Windows 10 and 11, ChromeOS, and laptops equipped with DP Alt Mode and Power Delivery. Note: This device is not compatible with Linux.
- What You Get: Anker USB-C Hub (5-in-1, 4K HDMI), welcome guide, 18-month warranty, and our friendly customer service.
---
name: loadrunner-helper
description: Helps explain and draft LoadRunner/VuGen virtual-user script work from repository context.
tools: [read, search]
---
You help developers understand and draft LoadRunner/VuGen-related virtual-user script changes.
Before proposing code, ask for the LoadRunner version, protocol, and relevant script or error details when they are missing. Explain assumptions, keep suggestions grounded in supplied repository context, and distinguish illustrative code from verified vendor syntax. Do not claim to execute VuGen or run a load test unless the user has provided an available tool and evidence that it ran. State what a developer should review in the installed version's documentation before relying on version-specific behavior.The prompts about version, protocol, script or error details, and human review are design choices for this helper. They encourage a useful answer without implying that the profile knows the developer’s installation or validates vendor-specific syntax. The 2023 SAP guide covers basic VuGen context and points readers to online or locally installed Help Centers; consult the documentation for the installed LoadRunner version before relying on version-specific details. SAP Help for LoadRunner.
Choose between editing the file and using VS Code’s editor
| Approach | Best fit | Trade-off |
|---|---|---|
| Edit the Markdown file directly | You want direct control of the profile text and frontmatter. | You are responsible for checking that each field is valid for the target harness. |
| Use VS Code’s Agent Customizations editor | You want an editor-assisted way to create a profile in VS Code. | Review its generated frontmatter, tool choices, and instructions for accuracy and harness compatibility. |
Choose scope separately from authoring method. A workspace profile belongs with the project for contributors to share; a user-level profile is suited to reuse across your own workspaces. The file location does not make an agent’s instructions universally available in other Copilot hosts.
Quick wins for a faster PC:
Repair Windows errors before they cause bigger problemsFix Now →Fix the driver behind crashes, sound loss and screen glitchesFind Drivers →Clear out junk files and repair common Windows errorsFree Scan →Rank #3
- Sleek 7-in-1 USB-C Hub: Features an HDMI port, two USB-A 3.0 ports, and a USB-C data port, each providing 5Gbps transfer speeds. It also includes a USB-C PD input port for charging up to 100W and dual SD and TF card slots, all in a compact design.
- Flawless 4K@60Hz Video with HDMI: Delivers exceptional clarity and smoothness with its 4K@60Hz HDMI port, making it ideal for high-definition presentations and entertainment. (Note: Only the HDMI port supports video projection; the USB-C port is for data transfer only.)
- Double Up on Efficiency: The two USB-A 3.0 ports and a USB-C port support a fast 5Gbps data rate, significantly boosting your transfer speeds and improving productivity.
- Fast and Reliable 85W Charging: Offers high-capacity, speedy charging for laptops up to 85W, so you spend less time tethered to an outlet and more time being productive.
- What You Get: Anker USB-C Hub (7-in-1), welcome guide, 18-month warranty, and our friendly customer service.
Keep fields and capabilities host-specific
GitHub’s cloud-agent configuration reference documents fields including description, name, target, tools, model, user-invocable, disable-model-invocation, mcp-servers, and metadata. Their behavior depends on the environment. Do not assume a field documented for an IDE works on GitHub.com: GitHub’s current reference says argument-hint and handoffs from VS Code and other IDE custom agents are not supported for Copilot cloud agent on GitHub.com. Check the reference for the chosen host rather than treating frontmatter as portable across all Copilot harnesses.
Quick Recap
Best Value
- 5-in-1 Connectivity: Equipped with a 4K HDMI port, a 5 Gbps USB-C data port, two 5 Gbps USB-A ports, and a USB C 100W PD-IN port. Note: The USB C 100W PD-IN port supports only charging and does not support data transfer devices such as headphones or speakers.
- Powerful Pass-Through Charging: Supports up to 85W pass-through charging so you can power up your laptop while you use the hub. Note: Pass-through charging requires a charger (not included). Note: To achieve full power for iPad, we recommend using a 45W wall charger.
- Transfer Files in Seconds: Move files to and from your laptop at speeds of up to 5 Gbps via the USB-C and USB-A data ports. Note: The USB C 5Gbps Data port does not support video output.
- HD Display: Connect to the HDMI port to stream or mirror content to an external monitor in resolutions of up to 4K@30Hz. Note: The USB-C ports do not support video output.
- What You Get: Anker 332 USB-C Hub (5-in-1), welcome guide, our worry-free 18-month warranty, and friendly customer service.
Rank #4
- Dual Converters, Infinite Potential：Includes 2× USB C male to USB A female adapters and 2× USB A male to USB C female adapters. Perfect for a wide range of uses—tablets with Bluetooth keyboards, expand USB ports on macbook, and more. Two different converters for all your daily needs
- Next-Level 10Gbps & 3A Charging: No more slow 480Mbps, this usb to usb c adapter has a transfer speed of up to 10Gbps, allowing you to do more transferring in less time. This usb adapter fits both USB A and USB C charger, supporting up to 3A fast charging
- Upgraded Exquisite Craftsmanship: With an aluminum alloy housing and metal connector, the usbc to usb adapter is extremely durable and sturdy. Rigorously tested to withstand more than 10,000 times of plugging and unplugging, ensuring long-lasting performance
- Broad Compatible: The usb c to usb adapter widely supports all USB C/ USB A devices like laptops, tablets, cellphones, car chargers, and phone chargers. Such as compatible with MacBook Pro/Air 2023/2022, Thunderbolt 4/3 Devices,Apple MagSafe Watch 9/8/7/SE/Ultra, iPad Pro 2022/2021, Samsung Galaxy S23/S20/S10, and iPhone 17/16/15 Pro. Plug and play
- Please Note: To reach 10Gbps speed, keep the cable under 3.3 ft. For USB A Male to USB C adapters, try flipping the USB C connector. USB C Male to USB A adapters support bidirectional 10Gbps transfer within 3.3 ft
How to make the LoadRunner instructions useful
- Ask for essential context. LoadRunner version, protocol, relevant script excerpt, and error details can change what advice is appropriate.
- State the expected output. For example, ask for an explanation or a proposed script change, with assumptions called out.
- Separate examples from verified syntax. Require the agent to label illustrative code and identify what needs checking in the installed version’s documentation.
- Do not imply execution. Unless an available tool actually ran and there is evidence of the result, the agent should not say it executed VuGen or ran a load test.
- Keep access proportionate. Grant only the tools the role needs, and review how the agent uses them on representative tasks.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
