arithmetic-answers SKILL.md skillA
arithmetic-answers from skillberry-ai/cap-evolve is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add skillberry-ai/cap-evolve/arithmetic-answers@git:20260822.f0fb098Pins git:20260822.f0fb098 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- skillberry-ai/cap-evolve
- Path
examples/toy_skill/seed_capability/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260822.f0fb098, committed Aug 22, 2026
- Size
- 530 bytes
- Repository stars
- 66
- License
- Apache-2.0
Answers a short arithmetic question with just the number. Use when the user asks to compute a sum, difference, or product and wants only the result back.
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
# Arithmetic answers
Read the expression, compute it, and reply with the number alone — no units, no
working, no trailing punctuation.
Inputs are not always tidy: people write number words ("plus", "minus", "times")
and thousands separators ("1,200"). Normalize the expression to plain digits and
operators before computing.Read the whole file at its exact version.
How to install
mdr add skillberry-ai/cap-evolve/arithmetic-answers@sha256:f58a437ae7f5456aThe line at the top of this page pins the label git:20260822.f0fb098, 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_ut55snph2o7kp4ew)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Aug 22, 2026.
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 (530 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
skillberry-ai/cap-evolve · 66 stars · license Apache-2.0 · pushed 2026-10-21 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_ut55snph2o7kp4ew GET https://markdownregistry.com/api/v1/resolve?ref=skillberry-ai/cap-evolve/arithmetic-answers GET https://markdownregistry.com/api/v1/blob/f58a437ae7f5456ab0e9b5a8bfefccc1ff090a73ed500e199d943a1c5d64becf
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.