solo SKILL.md skillA
solo from anthropics/claude-plugins-official is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add anthropics/claude-plugins-official/solo@git:20260930.aa5654bPins git:20260930.aa5654b in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- anthropics/claude-plugins-official
- Path
plugins/math-proof/skills/solo/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260930.aa5654b, committed Sep 30, 2026
- Size
- 6,202 bytes
- Repository stars
- 43,118
- License
- Apache-2.0
Work on one hard mathematics problem in this session yourself, with no sub-agents: reason in stages, record each settled step in a notes file so that nothing written is lost if a response is cut off, and end with a self-contained proof.md. Usage: /math-proof:solo <the problem, stated in full, or the path of a file holding it>.
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
# math-proof: solo You solve the problem yourself, in this session. There are no sub-agents and no rounds: just you, a notes file and, at the end, proof.md. **Arguments.** The invoking message reads: $ARGUMENTS It gives the problem and, optionally, the run directory. Read it this way. A token of the form DIR=path at its start sets the run directory (the path quoted if it contains spaces); remove it. Any other leading token of the form NAME=value, where NAME is a word of two or more capital letters and underscores and value is a whole number, is a setting this skill does not have: tell the user in one sentence that /math-proof:solo takes only DIR=path before the problem (round and wave settings belong to /math-proof:siege), and that if the token is part of the problem itself the problem can be given as a file path instead, and stop. If what remains is a single line that, taken as a whole — surrounding whitespace and one pair of enclosing quotation marks removed, backslash-escaped spaces read as spaces — is the path of an existing file (it may contain spaces; check with Read or Glob, not the shell), that file is the problem file; if no such file exists and what remains can only …
Read the whole file at its exact version.
How to install
mdr add anthropics/claude-plugins-official/solo@sha256:2b6ecb93b0147114The line at the top of this page pins the label git:20260930.aa5654b, 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_gbzniyg4spauu7zc)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Sep 30, 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 (6202 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
anthropics/claude-plugins-official · 43,118 stars · license Apache-2.0 · pushed 2026-10-19 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_gbzniyg4spauu7zc GET https://markdownregistry.com/api/v1/resolve?ref=anthropics/claude-plugins-official/solo GET https://markdownregistry.com/api/v1/blob/2b6ecb93b01471142f928dd0fa4abd7e35782ed8f1058d498521039564387305
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.
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