web-fetch skillA
web-fetch is agent-read markdown (skill) from runxhq/runx: Fetch and extract one public web source, optionally restrict its hosts, and return the content by digest with full provenance..
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.
What the file says
# Web Fetch Fetch one URL, prove it was allowed, extract the part the caller asked for, and return that slice by digest with the provenance needed to trust it later. ## What this skill does `web-fetch` retrieves a single public URL, extracts text, metadata, or links, and seals the result so a downstream step can cite the fetch without re-fetching. It checks the final host against the effective host policy before and after redirects, retrieves up to `max_bytes`, and returns the final URL, the HTTP status, a `content_digest` over the retrieved body, the extracted slice, and a provenance block recording when it ran, every redirect hop, and how many bytes it read. The body is referenced by digest; only the extracted slice is inlined. This is the primitive an agent reaches for when it has already decided which page to read. The decision it makes easier is "can I read this page, and what did it actually say", with the answer backed by a digest instead of a remembered paraphrase. The calling agent decides which sources matter and synthesizes across them; `web-fetch` retrieves exactly one source. By default it may follow …
Read the whole file at its exact version.
How to install
mdr add runxhq/runx/web-fetch@git:20260811.1ec1771mdr add runxhq/runx/web-fetch@sha256:f0a140311293d234Pin 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_i2fjujt34qtjk64w)
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Versions
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260811.1ec1771 latest | 2026-08-11 | 1ec1771 | 7,140 B | A | view · diff |
| git:20260723.6e5370b | 2026-07-23 | 6e5370b | 6,749 B | A | view · diff |
| git:20260716.fa2dea2 | 2026-07-16 | fa2dea2 | 6,521 B | A | view · diff |
| git:20260715.4052e08 | 2026-07-15 | 4052e08 | 6,600 B | A | view · diff |
| git:20260715.8644be9 | 2026-07-15 | 8644be9 | 6,598 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 (7140 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
runxhq/runx · 93 stars · license Apache-2.0 · pushed 2026-09-24 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_i2fjujt34qtjk64w GET https://markdownregistry.com/api/v1/resolve?ref=runxhq/runx/web-fetch GET https://markdownregistry.com/api/v1/blob/f0a140311293d2349c926b8b4f6de72753c09d85c225e5f32c0c16c770b32fbb
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