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.
npx agentmods add skills/jokull/icelandic-data/lanamalnpx skills add jokull/icelandic-data --skill lanamalgit clone --depth 1 https://github.com/jokull/icelandic-dataWrote 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/skills/jokull/icelandic-data/lanamal)<a href="https://agentmods.dev/skills/jokull/icelandic-data/lanamal"><img src="https://agentmods.dev/badge/skills/jokull/icelandic-data/lanamal.svg" alt="Measured on agentmods" 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 | $0.00030 | $0.01403 |
| Opus 5 | $0.00015 | $0.00701 |
| Sonnet 5 | $0.00006 | $0.00281 |
| Haiku 4.5 | $0.00003 | $0.00140 |
Grade A, and why
lanamal scanned grade A with 1 finding 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 6d 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.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
uppercased). Requires a browser-like `User-Agent` — a bare `curl` with no How it starts
The opening of the file, as written. The whole thing — 107 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Lánamál ríkisins (Government Debt Management Iceland)
Market data for Icelandic government bonds — yields, prices, chart history.
Publishes the RIKB (óverðtryggð, non-indexed) and RIKS (verðtryggð, indexed)
series that lanamal.is quotes on its /markadsyfirlit pages.
API
No auth, plain JSON. Discovered by loading a /markadsyfirlit/?type=bond
page in a real browser and reading the network log — the page is ASP.NET
WebForms with a React island, and the bond detail panel calls:
GET https://www.lanamal.is/api/market/LoadIndexedDetail?orderbookId={ID}&lang=is
{ID} is the orderbook id in the page's own URL query string, e.g.
RIKB_28_1115 (case-insensitive upstream, but the response echoes it
uppercased). Requires a browser-like User-Agent — a bare curl with no
headers gets blocked; a Referer pointing at the matching /markadsyfirlit
page plus a normal UA is enough, no cookies/session needed.
Response encoding is UTF-16, not UTF-8 — httpx/requests auto-detect it
fine from the BOM, but a raw curl dump looks like garbage without decoding.
curl -s -A "Mozilla/5.0" \
-H "Referer: https://www.lanamal.is/markadsyfirlit/?type=bond&orderbookid=rikb_31_0124" \
"https://www.lanamal.is/api/market/LoadIndexedDetail?orderbookId=RIKB_31_0124&lang=is"
Response shape
A one-element JSON array:
[{
"closingYield": "7,54%", "closingPrice": "94,08",
"bidYield": "7,55%", "askYield": "7,52%",
"lastValidYield": "7,54%", "totalValueTraded": "94", "tradeCount": 1,
"orderbookId": "RIKB_31_0124", "shortName": "RIKB 31 0124",
"longName": "Óverðtryggð ríkisbréf",
"attributes": [
{"name": "ISIN númer", "value": "IS0000031234"},
{"name": "Innlausnardagur", "value": "24.01.2031"},
{"name": "Nafnvextir", "value": "5,00"}
],
"chartData": {
"header": "Ávöxtunarkr. í lok dags",
"chartData": [["2025-08-18T00:00:00", 7.31], ["2025-08-19T00:00:00", 7.30], ...]
}
}]
attributes is a flat list of Icelandic-labelled key/value pairs (maturity
date, ISIN, coupon, issue size, etc.) — parse by name, not by list position.
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.
- 6d ago First seen · 107 lines · 30 tokens per session scan A 8a98d86e839c
lanamal is a skill published in the GitHub repository jokull/icelandic-data (52 stars, last pushed yesterday), licensed MIT. It adds 30 tokens to every session and 1,403 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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