# Target a specific issue or PR from a URL :::note This tutorial is a stub. The mechanism it covers is documented today under [Manual triggers / URL routing](/triggers/manual#url-routing). ::: A pipeline can be fired by pasting a GitHub issue or PR URL — no pipeline name, no flags. `trigger.patterns` selects the pipeline by URL prefix, and a `from:` mapping pulls the specific item's identifier into a typed arg. This is the path the `issue-solve` pipeline uses to target the exact issue a pasted URL names. This lesson will walk that end to end. Until it lands, follow: * [Manual triggers / URL routing](/triggers/manual#url-routing) — `patterns` and the `{{event.*}}` / `{{url.*}}` template namespaces. * [Build your first pipeline](/tutorials/pipeline-args) — step 4 maps an arg off a pasted URL with `from:`.