Spec Kit is an open-source toolkit for defining software requirements and plans before implementation with an AI coding agent. It is used by developers and organizations following a spec-driven development process.
Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
git clone --depth 1 https://github.com/github/spec-kitWrote 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.
[](https://agentmods.dev/commands/github/spec-kit/example)<a href="https://agentmods.dev/commands/github/spec-kit/example"><img src="https://agentmods.dev/badge/commands/github/spec-kit/example/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.
<a href="https://agentmods.dev/commands/github/spec-kit/example"><img src="https://agentmods.dev/badge/commands/github/spec-kit/example.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00006 | $0.01042 |
| Opus 5.5 | $0.00002 | $0.00417 |
| Sonnet 5.5 | $0.00001 | $0.00208 |
| Haiku 4.5 | $0.00001 | $0.00104 |
Grade A, and why
example 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 1mo 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.
Copies of this mod
1 near-identical copy found in the catalogue:
- example — 95% identical, 0 lines differ
How it starts
The opening of the file, as written. The whole thing — 211 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Example Command
This is an example command that demonstrates how to create commands for Spec Kit extensions.
Purpose
Describe what this command does and when to use it.
Prerequisites
List requirements before using this command:
- Prerequisite 1 (e.g., "MCP server configured")
- Prerequisite 2 (e.g., "Configuration file exists")
- Prerequisite 3 (e.g., "Valid API credentials")
User Input
$ARGUMENTS
Steps
Step 1: Load Configuration
Load extension configuration from the project:
``bash config_file=".specify/extensions/my-extension/my-extension-config.yml"
if [ ! -f "$config_file" ]; then echo "❌ Error: Configuration not found at $config_file" echo "Run 'specify extension add my-extension' to install and configure" exit 1 fi
Read configuration values
setting_value=$(yq eval '.settings.key' "$config_file")
Apply environment variable overrides
setting_value="${SPECKIT_MY_EXTENSION_KEY:-$setting_value}"
Validate configuration
if [ -z "$setting_value" ]; then echo "❌ Error: Configuration value not set" echo "Edit $config_file and set 'settings.key'" exit 1 fi
echo "📋 Configuration loaded: $setting_value" ``
Step 2: Perform Main Action
Describe what this step does:
``markdown Use MCP tools to perform the main action:
- Tool: example-mcp-server example_tool
- Parameters: { "key": "$setting_value" }
This calls the MCP server tool to execute the operation. ``
Step 3: Process Results
Process the results and provide output:
bash echo "" echo "✅ Command completed successfully!" echo "" echo "Results:" echo " • Item 1: Value" echo " • Item 2: Value" echo ""
Step 4: Save Output (Optional)
Save results to a file if needed:
``bash output_file=".specify/my-extension-output.json"
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.
- 1mo ago First seen · 211 lines · 6 tokens per session scan A 4d23361bc7b3
example is a command published in the GitHub repository github/spec-kit (141,437 stars, last pushed today), licensed MIT. It adds 6 tokens to every session and 1,042 once invoked, about $0.0000 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.
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