What is tax-public-inquiries?

A tool for querying the Estonian Tax and Customs Board’s public forms for a person’s or organisation’s reference number or current tax-arrears result.

Use it to check a supplied identifier against the public reference-number and tax-debt inquiry services.

It automates the public lookup while following the form’s session and security-token requirements.

tax-public-inquiries — Skill for Claude Code by taivop

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent

npx skills add taivop/marketplace --skill tax-public-inquiries

Clone the repo

git clone --depth 1 https://github.com/taivop/marketplace

Made for: Claude Code.

Or install estonia-public-sources, the plugin that ships this one along with the rest of its 88 skills.

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/skills/taivop/marketplace/tax-public-inquiries/github.svg)](https://agentmods.dev/skills/taivop/marketplace/tax-public-inquiries)

Your own site

<a href="https://agentmods.dev/skills/taivop/marketplace/tax-public-inquiries"><img src="https://agentmods.dev/badge/skills/taivop/marketplace/tax-public-inquiries/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/taivop/marketplace/tax-public-inquiries"><img src="https://agentmods.dev/badge/skills/taivop/marketplace/tax-public-inquiries.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 31 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 418 The whole file, excluding the scripts and references it only reads on demand.

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	$0.00031	$0.00418
Opus 5	$0.00015	$0.00209
Sonnet 5	$0.00006	$0.00084
Haiku 4.5	$0.00003	$0.00042

Measured 8d ago against content hash 62e502158f3a, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

tax-public-inquiries 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.

skills/estonia-public-sources/sources/tax-public-inquiries/SKILL.md · 38 lines

What it actually says

Tax Public Inquiries

Use this source for a person's or entity's public EMTA reference number or current tax-arrears result. It does not expose confidential tax filings or bulk tax records.

Endpoints

Inquiry	Form GET	Form POST
Reference number	`https://apps.emta.ee/saqu/public/reference?lang=en`	`https://apps.emta.ee/saqu/public/reference/query`
Tax arrears	`https://apps.emta.ee/saqu/public/taxdebt?lang=en`	`https://apps.emta.ee/saqu/public/taxdebt/query`

Request contract

Create a cookie-preserving HTTP session and GET the selected form.
Extract the hidden CSRFToken value.
POST application/x-www-form-urlencoded data to the matching query URL using the same session:
- personCode: Estonian personal identification code or registry code
- p_submit: Search
- CSRFToken: token from the form
Parse the returned HTML table or result paragraph. The tax-arrears response includes its effective timestamp.

No CAPTCHA was present in the verified public flow. If the service later introduces one, stop automation instead of bypassing it.

Output and limits

Keep the queried identifier, endpoint, retrieval time, and exact returned fields or message.
Minimize personal-data queries: use a personal identifier only when the task requires it and the user is entitled to perform the public lookup.
A no-arrears response is a point-in-time result, not proof that arrears never existed.

Verification

Registry code 70000349 returns the public EMTA entity name in both forms and reference number 01000012 in the reference-number result.

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 · 38 lines · 31 tokens per session scan A 62e502158f3a

Subscribe to this mod's changes

tax-public-inquiries is a skill published in the GitHub repository taivop/marketplace (17 stars, last pushed 12d ago), licensed MIT. It adds 31 tokens to every session and 418 once invoked, about $0.0002 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 2026-09-04.

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