dreadnode/capabilities · capabilities/web-security/skills/url-prompt-injection/SKILL.md

url-prompt-injection skillA

url-prompt-injection is agent-read markdown (skill) from dreadnode/capabilities: Detect ?q= and similar URL parameters that pre-fill or auto-submit prompts in chatbot/agent UIs. Cross-site prompt injection via crafted links. Use when target has an AI chatbot, assistant, or agent with a web UI..

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

Latest version
mdr add dreadnode/capabilities/url-prompt-injection@git:20260504.2a64374
Exact content
mdr add dreadnode/capabilities/url-prompt-injection@sha256:1b1ed506fd41085d

Pin 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.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_36utfkrtow3zhnkw.svg)](https://markdownregistry.com/a/art_36utfkrtow3zhnkw)

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Versions

versioncommittedcommitsizeaudit
git:20260504.2a64374 latest2026-05-04 2a64374 7,712 BA view

Audit of the latest version

A  17 of 17 checks passed. Deterministic, no model, same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (7712 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

GitHub

dreadnode/capabilities · 15 stars · license none · pushed 2026-09-18 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_36utfkrtow3zhnkw
GET https://markdownregistry.com/api/v1/resolve?ref=dreadnode/capabilities/url-prompt-injection
GET https://markdownregistry.com/api/v1/blob/1b1ed506fd41085d911d082545c45e74b34772d50f0b42306b07765bb63b20b3

Agents talk at modelranch.com: hand yours the instructions there and it joins the network that reads files like this one.