diplomat-agent: Instructions file for Codex

AGENTS.md

diplomat-agent AGENTS.md is an instructions file for Codex, OpenCode from Diplomat-ai/diplomat-agent. It costs 753 tokens per session, scanned A, original, Apache-2.0.

Repository guidance for AI coding assistants working on diplomat-agent, a Python tool that checks whether real-world actions in code have safety checks around them. It describes the code layout, design choices, data structures, and testing practices.

In plain words
What is it for?
Use it when modifying the scanner, analysis logic, reports, command-line interface, models, or tests in the diplomat-agent repository.
Why use it?
It gives an assistant the project context needed to make changes that fit the existing architecture and safety-analysis approach.

Instructions file for CodexOpenCode

Written for Codex and OpenCode: the file is AGENTS.md. Also seen: mentions AGENTS.md.

This is Diplomat-ai/diplomat-agent's own configuration. It tells Codex and OpenCode how to work on diplomat-agent 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 diplomat-agent configures →

Reuse

Borrowing it

Nothing to install: this file belongs to Diplomat-ai/diplomat-agent. 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/Diplomat-ai/diplomat-agent/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/Diplomat-ai/diplomat-agent

Made for: Codex, OpenCode.

Wrote this? Show the measurements

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README.md
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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.

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Per session 753 This file is loaded in full into every session.
When invoked 753 The same file — it is already loaded in full.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
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 $0.00753 $0.00753
Opus 5 $0.00377 $0.00377
Sonnet 5 $0.00151 $0.00151
Haiku 4.5 $0.00075 $0.00075

Measured 10d ago against content hash a91cb1b210e5, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

diplomat-agent 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 10d 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.

AGENTS.md · 70 lines

How it starts

The opening of the file, as written. The whole thing — 70 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AGENTS.md — for AI coding assistants (v0.3.0)

What this repo is

diplomat-agent is a static analysis tool that scans Python codebases for tool calls (functions that change the real world: payments, database writes, HTTP calls, emails) and checks whether safety checks exist around them.

Architecture

  • src/diplomat_agent/scanner/ — AST visitor that detects effects and checks
  • src/diplomat_agent/scanner/patterns.py — catalogue of all known patterns (data, not logic)
  • src/diplomat_agent/analyzer/ — computes verdict (UNGUARDED / PARTIALLY_GUARDED / GUARDED / LOW_RISK) and missing check hints
  • src/diplomat_agent/reporter/ — terminal, markdown, JSON, YAML registry outputs
  • src/diplomat_agent/models.py — dataclasses: SideEffect, Guard, Tool, Scenario, ScanResult
  • src/diplomat_agent/cli.py — argparse CLI entry point

Key design decisions

  • AST, not regex. We parse Python source with the stdlib ast module. Regex would miss nested calls and produce false positives on strings/comments.
  • stdlib only. Zero required dependencies. rich is optional for terminal color, pyyaml for YAML output.
  • Limited inter-procedural analysis. Decorators are resolved across files within the same package to detect guards in their bodies. General call chains are still analyzed intra-procedurally.
  • Effects and checks, not risk scores. The scanner reports what it sees. It does not assign severity or suggest fixes.

Running tests

PYTHONPATH=src python -m pytest tests/ -v

309 tests (332 as of v0.4.0). All must pass before merge.

Conventions

  • Python 3.9+
  • from __future__ import annotations in all source files
  • No external dependencies in core scanner
  • Patterns are data in patterns.py, not logic scattered across the codebase

Diplomat Reviewer — Agent Instructions

When reviewing code in this repo

When asked to review code, scan for unguarded tool calls, or check agent safety:

Read the full file on GitHub · 70 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. 10d ago First seen · 70 lines · 753 tokens per session scan A a91cb1b210e5

Subscribe to this mod's changes

diplomat-agent AGENTS.md is an instructions file published in the GitHub repository Diplomat-ai/diplomat-agent (7 stars, last pushed 2mo ago), licensed Apache-2.0. It adds 753 tokens to every session, about $0.0038 per session on Opus 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 2026-08-31.

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