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.
curl -O https://raw.githubusercontent.com/iseppo/e-arveldaja-mcp/master/CLAUDE.mdgit clone --depth 1 https://github.com/iseppo/e-arveldaja-mcpWrote 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/iseppo/e-arveldaja-mcp/claude-md)<a href="https://agentmods.dev/instructions/iseppo/e-arveldaja-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/iseppo/e-arveldaja-mcp/claude-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/iseppo/e-arveldaja-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/iseppo/e-arveldaja-mcp/claude-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 | $0.15691 | $0.15691 |
| Opus 5.5 | $0.06276 | $0.06276 |
| Sonnet 5.5 | $0.03138 | $0.03138 |
| Haiku 4.5 | $0.01569 | $0.01569 |
Grade A, and why
e-arveldaja-mcp CLAUDE.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 yesterday.
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 — 718 lines — stays where its author put it; the contents beside it link to each section on GitHub.
e-arveldaja MCP Server
TypeScript MCP server for the Estonian e-arveldaja (RIK e-Financials) REST API.
126 tools by default on the standard profile; opt-in guided / guided-sales expose 19 / 20 tools, and full exposes all 146. The prompt registry holds 16 workflow prompts (guided profiles register fewer — a prompt whose required tools are all absent is not registered) and there are 15 resources across 12 modules. Supports multiple companies/accounts.
Quick Start
npm run build # tsc -> dist/
npm run start # node dist/index.js (stdio transport)
npm run dev # tsx src/index.ts (development)
Credentials
All apikey*.txt files are scanned from the working directory (where the server is launched). Multiple files = multiple connections (companies).
Credentials are loaded in this priority order (see src/config.ts):
EARVELDAJA_API_KEY_FILEenv var pointing to a specific file- Environment variables:
EARVELDAJA_API_KEY_ID,EARVELDAJA_API_PUBLIC_VALUE,EARVELDAJA_API_PASSWORD .envfiles — local working directory first, then global config directory (~/.config/e-arveldaja-mcp)apikey*.txtfiles — scanned from the working directory (import source, not long-term store)
The apikey.txt format:
ApiKey ID: <key_id>
ApiKey public value: <public_value>
Password: <password>
Set EARVELDAJA_SERVER=demo for the demo API (default: live).
Multi-account (multiple companies)
Place multiple apikey*.txt files (e.g. apikey.txt, apikey (1).txt) next to the project.
Use list_connections to see all available accounts and switch_connection to switch between them.
Switching clears all cached data to prevent cross-company data leaks.
The active connection is in-process state: a server respawned by the MCP host starts on
EARVELDAJA_DEFAULT_CONNECTION (index or name; default 0, unknown values fail startup).
With 2+ connections every non-readonly tool gains an optional connection argument
(index or name); a mismatch with the active connection is refused (connection_mismatch)
before any API request. Pass it on every write in multi-company sessions (GitHub #61).
Connection names are unique: when two distinct credentials derive the same name
(e.g. apikey.txt + apikey.TXT, or env-local from two working dirs), later ones
in load order get a deterministic -2, -3, … suffix, so a name-pinned call is never ambiguous.
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.
- yesterday Changed · +11 lines · +805 tokens per session f2d8bc07d85d
- 3d ago Changed · +7 lines · +619 tokens per session 85ab1f332c09
- 4d ago Changed · +8 lines · +173 tokens per session 26f168f7f5c2
- 10d ago Changed · +48 lines · +1,147 tokens per session 7735fc9a9389
- 13d ago Changed · +23 lines · +311 tokens per session ec2799894b99
- 14d ago Changed · +35 lines · +686 tokens per session aadaa069d6a8
- 16d ago Changed · +58 tokens per session 95911fa68bea
- 18d ago Changed · +14 tokens per session 960647e5dd24
- 19d ago Changed · +98 tokens per session e7752633d882
- 27d ago First seen · 586 lines · 11,780 tokens per session scan A 1496f6a04892
e-arveldaja-mcp CLAUDE.md is an instructions file published in the GitHub repository iseppo/e-arveldaja-mcp (39 stars, last pushed today), licensed Apache-2.0. It adds 15,691 tokens to every session, about $0.0628 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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