agentsmith-cli: Skill for Claude Code

.github/skills/copilot-sdk/SKILL.md

copilot-sdk is a skill for Claude Code, Codex from shyamsridhar123/agentsmith-cli. It costs 78 tokens per session (2,117 once invoked), scanned A, original, MIT.

A software development kit for building applications that use GitHub Copilot's agent engine. It supports TypeScript, Python, Go, and .NET, and connects applications to Copilot CLI.

In plain words
What is it for?
Use it to build AI-powered applications, custom agents, command-line tools, or backends that invoke GitHub Copilot programmatically.
Why use it?
It provides documented building blocks for starting sessions, receiving streamed results, adding tools, and connecting MCP services instead of designing those integrations from scratch.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

This is shyamsridhar123/agentsmith-cli's own configuration. It tells Claude Code and Codex how to work on agentsmith-cli itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything agentsmith-cli configures →

Reuse

Borrowing it

Nothing to install: this file belongs to shyamsridhar123/agentsmith-cli. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/shyamsridhar123/agentsmith-cli/main/.github/skills/copilot-sdk/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/shyamsridhar123/agentsmith-cli

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for copilot-sdk

README.md
[![agentmods](https://agentmods.dev/badge/skills/shyamsridhar123/agentsmith-cli/copilot-sdk/github.svg)](https://agentmods.dev/skills/shyamsridhar123/agentsmith-cli/copilot-sdk)
Your own site
<a href="https://agentmods.dev/skills/shyamsridhar123/agentsmith-cli/copilot-sdk"><img src="https://agentmods.dev/badge/skills/shyamsridhar123/agentsmith-cli/copilot-sdk/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for copilot-sdk

Your own site · 80×15
<a href="https://agentmods.dev/skills/shyamsridhar123/agentsmith-cli/copilot-sdk"><img src="https://agentmods.dev/badge/skills/shyamsridhar123/agentsmith-cli/copilot-sdk.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 78 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,117 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 1 finding, up to medium

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • medium Data Exfiltration · line 270
    Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.
    Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
How audits are shown
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00078 $0.02117
Opus 5.5 $0.00031 $0.00847
Sonnet 5.5 $0.00016 $0.00423
Haiku 4.5 $0.00008 $0.00212

Measured 2mo ago against content hash 318b5e09fe88, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

copilot-sdk scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.github/skills/copilot-sdk/SKILL.md · 343 lines

How it starts

The opening of the file, as written. The whole thing — 343 lines — stays where its author put it; the contents beside it link to each section on GitHub.

GitHub Copilot SDK

Build AI-powered applications that leverage Copilot's agentic workflows. The SDK exposes the same engine behind Copilot CLI—a production-tested agent runtime you can invoke programmatically.

Status: Technical Preview

When to Use This Skill

  • Creating applications that need programmatic access to GitHub Copilot
  • Building custom AI agents with tool integration
  • Developing CLI tools or backends powered by Copilot
  • Integrating Copilot capabilities into existing applications

Prerequisites

  1. GitHub Copilot Subscription - Required for SDK usage
  2. Copilot CLI - Must be installed and in PATH (installation guide)

Installation

Language Package Command
TypeScript/Node.js @github/copilot-sdk npm install @github/copilot-sdk
Python github-copilot-sdk pip install github-copilot-sdk
Go github.com/github/copilot-sdk/go go get github.com/github/copilot-sdk/go
.NET GitHub.Copilot.SDK dotnet add package GitHub.Copilot.SDK

Architecture

Your Application → SDK Client → JSON-RPC → Copilot CLI (server mode)

Quick Start Examples

TypeScript

import { CopilotClient } from "@github/copilot-sdk";

const client = new CopilotClient();
await client.start();

const session = await client.createSession({ model: "gpt-5" });

session.on((event) => {
    if (event.type === "assistant.message") {
        console.log(event.data.content);
    } else if (event.type === "session.idle") {
        // Session finished processing
    }
});

await session.send({ prompt: "What is 2+2?" });
await session.destroy();
await client.stop();

Python

from copilot import CopilotClient

client = CopilotClient()
await client.start()

session = await client.create_session({"model": "gpt-5"})

def on_event(event):
    if event["type"] == "assistant.message":
        print(event["data"]["content"])

session.on(on_event)
await session.send({"prompt": "What is 2+2?"})
await session.destroy()
await client.stop()

Read the full file on GitHub · 343 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2mo ago First seen · 343 lines · 78 tokens per session scan A 318b5e09fe88

Subscribe to this mod's changes

copilot-sdk is a skill published in the GitHub repository shyamsridhar123/agentsmith-cli (17 stars, last pushed 8d ago), licensed MIT. It adds 78 tokens to every session and 2,117 once invoked, about $0.0003 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

Related

copilot-sdk compared with skills from other repositories

copilot-sdk next to 6 skills from other repositories
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