oastools: Instructions file for Gemini CLI

GEMINI.md

oastools GEMINI.md is an instructions file for Gemini CLI from erraggy/oastools. It costs 1,091 tokens per session, scanned A, original, MIT.

Instructions for Gemini coding agents working on oastools, a Go command-line tool and library for working with OpenAPI specifications. OpenAPI is a standard description of a web API's endpoints, data, and rules.

In plain words
What is it for?
Use them when parsing, validating, fixing, converting, comparing, joining, building, or generating Go code from OpenAPI documents.
Why use it?
They explain the project's packages, supported document versions, commands, and development conventions so an agent can make changes that fit the codebase.

Instructions file for Gemini CLI

Written for Gemini CLI: the file is GEMINI.md. Also seen: mentions Gemini CLI.

This is erraggy/oastools's own configuration. It tells Gemini CLI how to work on oastools 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 oastools configures →

Reuse

Borrowing it

Nothing to install: this file belongs to erraggy/oastools. 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/erraggy/oastools/main/GEMINI.md
Clone the repo
git clone --depth 1 https://github.com/erraggy/oastools

Made for: Gemini CLI.

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 1,091 This file is loaded in full into every session.
When invoked 1,091 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 $0.01091 $0.01091
Opus 5.5 $0.00436 $0.00436
Sonnet 5.5 $0.00218 $0.00218
Haiku 4.5 $0.00109 $0.00109

Measured 1mo ago against content hash 2f44f620c0a5, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

oastools GEMINI.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 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.

GEMINI.md · 133 lines

How it starts

The opening of the file, as written. The whole thing — 133 lines — stays where its author put it; the contents beside it link to each section on GitHub.

GEMINI.md

This document provides a comprehensive overview of the oastools project, designed to facilitate understanding and contribution for Gemini agents.

Project Overview

oastools is a Go-based command-line interface (CLI) and library for working with OpenAPI specifications (OAS). It provides a rich set of features for parsing, validating, converting, diffing, joining, and building OAS documents, as well as generating Go code from them. The project supports all OpenAPI versions from 2.0 to 3.2.0.

The project is structured as a Go module with several public packages, each corresponding to a major feature:

  • parser: For parsing and analyzing OpenAPI specifications.
  • validator: For validating the correctness of OpenAPI specifications.
  • fixer: For automatically fixing common validation errors in OpenAPI specifications.
  • converter: For converting between different OpenAPI versions (e.g., 2.0 to 3.x).
  • joiner: For merging multiple OpenAPI specifications.
  • differ: For comparing OpenAPI specifications and detecting breaking changes.
  • generator: For generating idiomatic Go code (clients, servers, types) from OpenAPI specifications.
  • builder: For programmatically constructing OpenAPI specifications.

The project also includes a CLI tool, oastools, which exposes the library's functionality on the command line.

Building and Running

The project uses a Makefile to streamline common development tasks.

Key Commands

  • Build the CLI:

    make build
    

    This command compiles the oastools CLI and places the binary in the bin/ directory.

  • Run tests:

    make test
    

    This command runs the test suite for all packages.

  • Run tests with race detection:

    make test-race
    
  • Generate a test coverage report:

    make test-coverage
    

    This will generate an HTML coverage report named coverage.html.

  • Lint the code:

Read the full file on GitHub · 133 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. 1mo ago First seen · 133 lines · 1,091 tokens per session scan A 2f44f620c0a5

Subscribe to this mod's changes

oastools GEMINI.md is an instructions file published in the GitHub repository erraggy/oastools (6 stars, last pushed 9d ago), licensed MIT. It adds 1,091 tokens to every session, about $0.0044 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 2026-08-31.

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