finance-fx SKILL.md skillA
finance-fx from skillmedev/skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add skillmedev/skills/finance-fx@git:20261005.bea4ea5Pins git:20261005.bea4ea5 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- skillmedev/skills
- Path
skills/finance-fx/SKILL.md- Versions recorded
- 3
- Latest version
- git:20261005.bea4ea5, committed Oct 5, 2026
- First version recorded
- Jul 5, 2026
- Size
- 5,191 bytes
- Repository stars
- 19
- License
- MIT
Use when a task needs live or historical money data - "convert USD to EUR", "current/past exchange rate", "FX rate on this date / over this range", or "current price of Bitcoin/Ethereum, market cap, 24h change". Frankfurter (ECB reference rates, no key) is the FX default; CoinGecko's free keyless tier covers crypto. Do NOT use for stock quotes or equities - no keyless stock API survives verification, say so instead of guessing; do NOT use for country economic indicators like GDP or inflation…
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Finance & FX Data Fetch exchange rates and crypto prices with keyless calls. The mistake this prevents: reaching for exchangerate.host, Fixer, or Alpha Vantage from training memory - all key-walled now - or hand-waving a stale rate from training data into a real calculation. ## Ranked APIs 1. **Frankfurter** (api.frankfurter.dev) - DEFAULT for fiat FX. European Central Bank reference rates, ~30 major currencies, history back to 1999, time series, no key, no rate limit worth worrying about. 2. **CoinGecko free tier** (api.coingecko.com) - crypto prices, market caps, 24h change for thousands of coins. No key, but a tight limit: roughly 5-15 calls/min from an anonymous IP. Batch ids into one call; on 429, back off 60s. ## Procedure 1. **Fiat or crypto?** Fiat → Frankfurter. Crypto → CoinGecko. Crypto→fiat conversion is one CoinGecko call (`vs_currencies=eur`), not two hops. 2. **Date the rate.** ECB reference rates update ~16:00 CET on business days; the response's `date` field tells you which day you actually got. Weekend/holiday requests return the previous business day - quote that date, don't present it as today's. …
Read the whole file at its exact version.
How to install
mdr add skillmedev/skills/finance-fx@sha256:22e5530a07661120The line at the top of this page pins the label git:20261005.bea4ea5, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_4s73e4542rxll5hg)
1 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 3 versions of this file, between Jul 5, 2026 and Oct 5, 2026, about one every 46 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261005.bea4ea5 latest | 2026-10-05 | bea4ea5 | 5,191 B | A | view · diff |
| git:20260705.a28c4ce | 2026-07-05 | a28c4ce | 5,159 B | A | view · diff |
| git:20260705.acb5571 | 2026-07-05 | acb5571 | 5,201 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (5191 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
skillmedev/skills · 19 stars · license MIT · pushed 2026-10-13 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_4s73e4542rxll5hg GET https://markdownregistry.com/api/v1/resolve?ref=skillmedev/skills/finance-fx GET https://markdownregistry.com/api/v1/blob/22e5530a07661120e00e620d939c7ed8d8dc928f7e55fc12e3abf434035afdfe
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.