expense-budget-tracker: Instructions file for Codex

AGENTS.md

expense-budget-tracker AGENTS.md is an instructions file for Codex, OpenCode from kirill-markin/expense-budget-tracker. It costs 3,101 tokens per session, scanned A, original, MIT.

Project-specific instructions for an open-source expense and budget tracker. The application records expenses, budgets, balances, transfers, and reports in multiple currencies using PostgreSQL, a database system.

In plain words
What is it for?
Use them when modifying this application's code, documentation, versions, runtime API descriptions, or web app, including the required type checks and production build.
Why use it?
They describe the codebase's rules, supported behavior, important files, and checks so changes fit the existing project.

Instructions file for CodexOpenCode

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

This is kirill-markin/expense-budget-tracker's own configuration. It tells Codex and OpenCode how to work on expense-budget-tracker 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 expense-budget-tracker configures →

Reuse

Borrowing it

Nothing to install: this file belongs to kirill-markin/expense-budget-tracker. 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/kirill-markin/expense-budget-tracker/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/kirill-markin/expense-budget-tracker

Made for: Codex, OpenCode.

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 expense-budget-tracker AGENTS.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/kirill-markin/expense-budget-tracker/agents-md/github.svg)](https://agentmods.dev/instructions/kirill-markin/expense-budget-tracker/agents-md)
Your own site
<a href="https://agentmods.dev/instructions/kirill-markin/expense-budget-tracker/agents-md"><img src="https://agentmods.dev/badge/instructions/kirill-markin/expense-budget-tracker/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.

agentmods 80×15 button for expense-budget-tracker AGENTS.md

Your own site · 80×15
<a href="https://agentmods.dev/instructions/kirill-markin/expense-budget-tracker/agents-md"><img src="https://agentmods.dev/badge/instructions/kirill-markin/expense-budget-tracker/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 3,101 This file is loaded in full into every session.
When invoked 3,101 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 $0.03101 $0.03101
Opus 5.5 $0.01240 $0.01240
Sonnet 5.5 $0.00620 $0.00620
Haiku 4.5 $0.00310 $0.00310

Measured 10d ago against content hash 2dff7fa26bbc, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

expense-budget-tracker 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 · 145 lines

How it starts

The opening of the file, as written. The whole thing — 145 lines — stays where its author put it; the contents beside it link to each section on GitHub.

expense-budget-tracker

Open-source expense and budget tracker: expenses, budgets, balances, transfers, and multi-currency reporting on Postgres.

Rules

  • Use English for code comments and documentation.
  • Prefer functional programming and pure functions.
  • Use classes only for connectors to external systems.
  • Use strict typing across functions, variables, and collections.
  • Avoid fallback logic unless explicitly requested.
  • Raise explicit, actionable errors with context.
  • Runtime discovery is the canonical machine API documentation. Keep its actions, instructions, and source links in sync with runtime behavior; /v1/openapi.json and /v1/swagger.json are public source-discovery compatibility probes, not specification endpoints.
  • Version-bump requests must follow docs/version-bump.md and keep scripts/checks/pr/check-version-alignment.mjs green.
  • Never bump the version during ordinary work: a release publishes the version already in the repository, and a separate request bumps it right after each MCP Registry publication (docs/mcp-registry-publishing.md).
  • Keep changes minimal and scoped to the current request.
  • Before considering a large block of work complete, run the relevant type checks and builds, and for web changes a production build (cd apps/web && npm run lint && npm run build).
  • Prefer non-interactive terminal commands.
  • The web app supports multiple languages. When adding or changing any translation in apps/web/src/i18n/, update the same keys in every locale file in that directory in the same change.
  • Change schema via new files in db/migrations/ only; never edit already-applied migrations.
  • CI/CD is GitHub Actions on push to main (.github/workflows/deploy.yml), filtered by its paths: list: a merge touching nothing in that list produces no Deploy run, which is correct and not a missed trigger.
  • The deploy process intentionally may update the web service before running migrations; this accepted deploy order is not an issue by itself.
  • Do not build AWS SDK bundles or other AWS deployment artifacts locally. Push code to main, and let CI/CD build and deploy everything.
  • Themeable colors belong in apps/web/src/app/styles/tokens.css under both :root and :root[data-theme="dark"]; write no new hex color anywhere else under apps/web/src, and keep scripts/checks/pr/check-css-hex-colors.mjs green.
  • RTL support is required:
    • In CSS, use logical properties such as inset-inline-start/end, margin-inline-start/end, padding-inline-start/end, border-inline-start/end, and text-align: start/end instead of physical left/right variants.
    • Use [dir="rtl"] overrides only when no logical equivalent exists (for example box-shadow).
    • In JS, account for RTL when handling scrollLeft, element positioning, and resize logic.

Read the full file on GitHub · 145 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 Changed · +1 lines · +34 tokens per session 2dff7fa26bbc
  2. 23d ago Changed · +1 lines · +86 tokens per session 1cabb718f496
  3. 27d ago Changed · -1 lines · -31 tokens per session d41013005050
  4. 28d ago Changed · +1 lines · +69 tokens per session 700ec7b1d4bf
  5. 1mo ago Changed · +1 lines · +53 tokens per session 1e3515949804
  6. 1mo ago Changed · +3 lines · +105 tokens per session 5a4fc14ee6cb
  7. 1mo ago Changed · +99 tokens per session 6e81ec240cd8
  8. 1mo ago Changed · +4 lines · +253 tokens per session 4cfb1427ef1e
  9. 1mo ago Changed · +1 lines · +42 tokens per session cacb59556089
  10. 2mo ago First seen · 134 lines · 2,391 tokens per session scan A a122e2936d9c

Subscribe to this mod's changes

expense-budget-tracker AGENTS.md is an instructions file published in the GitHub repository kirill-markin/expense-budget-tracker (41 stars, last pushed 3d ago), licensed MIT. It adds 3,101 tokens to every session, about $0.0124 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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