Agent SOP is a collection and format for writing reusable, parameterized natural-language procedures that guide AI agents through complex multi-step work. Teams use these standard operating procedures for tasks such as codebase analysis, project planning, system design, and code implementation. The catalogue add-ons distribute or apply these workflows through agent skills, plugins, and related interfaces.
Borrowing it
Nothing to install: this file belongs to strands-agents/agent-sop. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/strands-agents/agent-sop/main/AGENTS.mdgit clone --depth 1 https://github.com/strands-agents/agent-sopWrote 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/instructions/strands-agents/agent-sop/agents-md)<a href="https://agentmods.dev/instructions/strands-agents/agent-sop/agents-md"><img src="https://agentmods.dev/badge/instructions/strands-agents/agent-sop/agents-md/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/instructions/strands-agents/agent-sop/agents-md"><img src="https://agentmods.dev/badge/instructions/strands-agents/agent-sop/agents-md.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 | $0.02087 | $0.02087 |
| Opus 5.5 | $0.00835 | $0.00835 |
| Sonnet 5.5 | $0.00417 | $0.00417 |
| Haiku 4.5 | $0.00209 | $0.00209 |
Grade A, and why
agent-sop AGENTS.md 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 16d 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.
How it starts
The opening of the file, as written. The whole thing — 267 lines — stays where its author put it; the contents beside it link to each section on GitHub.
AGENTS.md - AI Assistant Context for Agent SOP Project
Project Overview
Agent SOP provides natural language workflows that enable AI agents to perform complex, multi-step tasks with consistency and reliability. This is a Python package that implements the Model Context Protocol (MCP) for AI assistant integration and supports conversion to Agent Skills format.
Directory Structure
agent-sop/
├── python/strands_agents_sops/ # Main Python package
│ ├── __main__.py # CLI entry point (mcp|skills|rule commands)
│ ├── mcp.py # MCP server implementation
│ ├── skills.py # Agent Skills conversion
│ └── utils.py # Shared SOP utilities
├── agent-sops/ # Source SOP definitions
│ ├── codebase-summary.sop.md # Documentation generation workflow
│ ├── code-assist.sop.md # TDD implementation workflow
│ ├── code-task-generator.sop.md # Task breakdown workflow
│ └── pdd.sop.md # Prompt-driven development workflow
├── python/tests/ # Comprehensive test suite
├── spec/ # SOP format specification
└── rules/ # SOP authoring guidelines
Development Patterns
SOP Format Structure
All SOPs follow this standardized format:
# SOP Title
## Overview
Brief description of what this SOP accomplishes and when to use it.
## Parameters
- **required_param** (required): Description of required input
- **optional_param** (optional, default: value): Description with default
## Steps
### 1. Step Name
Description of what this step accomplishes.
**Constraints:**
- You MUST perform required actions
- You SHOULD follow recommended practices
- You MAY include optional enhancements
- You MUST NOT perform prohibited actions
## Examples
Concrete usage examples showing input and expected outcomes.
## Troubleshooting
Common issues and their solutions.
RFC 2119 Constraint Keywords
- MUST: Required actions that cannot be skipped
- MUST NOT: Prohibited behaviors, forbidden actions
- SHOULD: Recommended practices for optimal results
- SHOULD NOT: Not recommended, but not forbidden
- MAY: Optional enhancements or alternatives
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.
- 16d ago Changed · +4 tokens per session 44ddb9938516
- 2mo ago First seen · 267 lines · 2,083 tokens per session scan A b3ec388fb088
agent-sop AGENTS.md is an instructions file published in the GitHub repository strands-agents/agent-sop (1,214 stars, last pushed 13d ago), licensed Apache-2.0. It adds 2,087 tokens to every session, about $0.0083 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.
agent-sop AGENTS.md compared with instructions from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| agent-sop AGENTS.mdstrands-agents/agent-sop | Instructions file | 1.2k | 13d ago | Apache-2.0 | A | 2,087 | Codex, OpenCode |
| vscode buildNext.instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 9,719 | GitHub Copilot |
| next.js AGENTS.mdvercel/next.js | Instructions file | 143k | today | MIT | A | 7,461 | Codex, OpenCode |
| langchain AGENTS.mdlangchain-ai/langchain | Instructions file | 149k | yesterday | MIT | A | 4,680 | Codex, OpenCode |
| vscode oss-third-party-notices.instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 5,516 | GitHub Copilot |
| vscode copilot-instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 3,093 | GitHub Copilot |
| deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness | Instructions file | 274k | 2d ago | MIT | A | 4,313 | Codex, OpenCode |