What is e-arveldaja-mcp AGENTS.md?

A project guide for e-arveldaja-mcp, a TypeScript MCP server connected to Estonia's e-Financials REST API. That API supports electronic accounting work, including accounting records and related financial data.

Use it when developing, testing, reviewing, or changing this accounting server, while preserving its dry-run defaults, approval steps, audit logs, path checks, and handling of untrusted text.

It tells developers where the real repository is and which project rules protect live accounting data. It also points to the main domain guide for accounting, tax, API, and safety details.

How iseppo/e-arveldaja-mcp configures Codex and OpenCode

Reuse

Borrowing it

Nothing to install: this file belongs to iseppo/e-arveldaja-mcp. 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/iseppo/e-arveldaja-mcp/master/AGENTS.md

Clone the repo

git clone --depth 1 https://github.com/iseppo/e-arveldaja-mcp

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.

README.md

[![agentmods](https://agentmods.dev/badge/instructions/iseppo/e-arveldaja-mcp/agents-md.svg)](https://agentmods.dev/instructions/iseppo/e-arveldaja-mcp/agents-md)

Your own site

<a href="https://agentmods.dev/instructions/iseppo/e-arveldaja-mcp/agents-md"><img src="https://agentmods.dev/badge/instructions/iseppo/e-arveldaja-mcp/agents-md.svg" alt="Measured on agentmods" height="20"></a>

Per session 1,149 This file is loaded in full into every session.

When invoked 1,149 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.

Model	Per session	Once invoked
Fable 5.1	$0.01149	$0.01149
Opus 5	$0.00575	$0.00575
Sonnet 5	$0.00230	$0.00230
Haiku 4.5	$0.00115	$0.00115

Measured 8d ago against content hash e46d4230a384, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

e-arveldaja-mcp 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 8d 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 · 81 lines

How it starts

The opening of the file, as written. The whole thing — 81 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AGENTS.md - Codex Instructions for e-arveldaja-mcp

Project

This repository is e-arveldaja-mcp, a TypeScript MCP server for the Estonian e-arveldaja / RIK e-Financials REST API.

The actual git repo root is:

/home/seppo/Dokumendid/e_arveldaja/e-arveldaja-mcp

Do not treat /home/seppo/Dokumendid/e_arveldaja as the repo root for git, tests, builds, or diffs.

Domain reference lives in CLAUDE.md. This file carries only the Codex-specific working conventions. For API endpoint semantics, accounting concepts, the D/C balance model, Estonian tax rules, tool-exposure flags, and the full OCR/untrusted-text sandbox policy, read CLAUDE.md — it is the single source of truth. Do not duplicate those facts here; update CLAUDE.md instead.

How To Work Here

Read the existing code before changing behavior. Prefer local patterns over new abstractions.
Keep changes scoped to the user request. Do not rewrite unrelated accounting workflows or generated metadata.
This project touches live accounting data. Preserve dry-run defaults, approval gates, audit logging, path validation, and untrusted-text sandboxing unless the user explicitly asks for a reviewed change. (Full rationale and the specific invariants are in CLAUDE.md.)
Never commit credentials or local accounting inputs. In particular, do not add .env, apikey*.txt, company exports, bank statements, receipts, or local accounting-rules.md unless the user explicitly asks and the file is safe.
Use rg / rg --files for search.
Use apply_patch for manual edits.
If a command fails because of sandboxing or network restrictions, rerun with the proper approval request rather than working around it.

Verification

For normal code changes, run:

npm test
npm run build
npm run test:integration

For release or publish work, also run:

npm run validate:release

Useful focused checks:

npm test -- src/tools/accounting-inbox.test.ts
npm test -- src/tools/receipt-inbox.test.ts
npm test -- src/tools/bank-reconciliation.test.ts

Read the full file on GitHub · 81 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.

8d ago First seen · 81 lines · 1,149 tokens per session scan A e46d4230a384

Subscribe to this mod's changes

e-arveldaja-mcp AGENTS.md is an instructions file published in the GitHub repository iseppo/e-arveldaja-mcp (34 stars, last pushed 5d ago), licensed Apache-2.0. It adds 1,149 tokens to every session, about $0.0057 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 2026-08-30.

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