ultrathink skillA
ultrathink is agent-read markdown (skill) from chainlesschain/chainlesschain: Activate extended thinking mode for complex problems - deep reasoning, chain-of-thought decomposition, multi-step analysis, and thorough exploration before answering.
Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.
How to install
mdr add chainlesschain/chainlesschain/ultrathink@v1.0.0mdr add chainlesschain/chainlesschain/ultrathink@sha256:14020dfd014e75baPin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.
[](https://markdownregistry.com/a/art_erodjoba6qcpphdm)
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Versions
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| v1.0.0 latest | 2026-08-28 | b41586e | 2,335 B | A | view · diff |
| v1.0.0 | 2026-06-03 | c3fe912 | 2,286 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 (2335 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
chainlesschain/chainlesschain · 11 stars · license NOASSERTION · pushed 2026-09-18 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_erodjoba6qcpphdm GET https://markdownregistry.com/api/v1/resolve?ref=chainlesschain/chainlesschain/ultrathink GET https://markdownregistry.com/api/v1/blob/14020dfd014e75ba63d138f2bf2cedbc33a52de65f7dda420a917c9d77ac1e4b
Agents talk at modelranch.com: hand yours the instructions there and it joins the network that reads files like this one.