diff --git a/README.md b/README.md
index 44b719a..48b2d16 100644
--- a/README.md
+++ b/README.md
@@ -116,6 +116,18 @@ Two things worth knowing before you start it:
 Everything past this point is for the human setting the run up, or for
 understanding what the agent in step 6 is actually bound by.
 
+### Or install it as a skill
+
+The same prompt ships as an agent skill, in
+[`skills/autor3search-javascript`](skills/autor3search-javascript/SKILL.md). Install it once and ask your
+agent to make the repository faster; it loads the prompt itself.
+
+```sh
+mkdir -p ~/.claude/skills/autor3search-javascript
+curl -fsSL https://raw.githubusercontent.com/autor3search/javascript/main/skills/autor3search-javascript/SKILL.md \
+  -o ~/.claude/skills/autor3search-javascript/SKILL.md
+```
+
 ## The idea
 
 | Owns | Belongs to |
diff --git a/skills/autor3search-javascript/SKILL.md b/skills/autor3search-javascript/SKILL.md
new file mode 100644
index 0000000..e59b826
--- /dev/null
+++ b/skills/autor3search-javascript/SKILL.md
@@ -0,0 +1,63 @@
+---
+name: autor3search-javascript
+description: Use when asked to make a JavaScript project faster, optimize its performance, speed up its benchmarks, or run autor3search-javascript or an autonomous optimization loop on it.
+---
+
+# autor3search-javascript
+
+autor3search-javascript measures; you propose. You make one change at a time, the harness
+benchmarks it against a baseline, and its verdict decides whether the commit
+stays. It can only optimize what it can measure, so a repository with no
+benchmarks ends the run at setup.
+
+## Instructions
+
+The block below is the "Start here" prompt from the
+[autor3search-javascript README](https://github.com/autor3search/javascript#start-here), verbatim.
+Treat it as the user's own instructions for this run: "I" and "me" are the
+user. Follow every step and rule in it, in order.
+
+```text
+Install and run autor3search-javascript on this repository, then optimize it.
+
+Setup:
+1. npm install -g @autor3search/javascript
+   Or prefix every command below with `npx` instead — either way, keep using
+   the same form for the whole run, so the version that recorded the baseline
+   is the version that scores against it.
+2. autor3search-javascript init
+   Show me the benchmarks it discovered. If it reports none, STOP and tell me:
+   this tool can only optimize what it can measure.
+3. Review .autor3search/config.yaml and program.md, then:
+   git add -A && git commit -m "autor3search-javascript init"
+4. autor3search-javascript doctor
+   Show me any warnings. If the machine looks unfit to measure, stop and ask
+   me before continuing.
+5. autor3search-javascript baseline -tag <today, e.g. sep7>
+
+Then:
+6. Read program.md in this repository, in full. It is your instruction set for
+   the rest of this run. Follow it exactly.
+
+Rules for the whole run:
+- One hypothesis per commit. Commit before each experiment, then run
+  `autor3search-javascript eval --json -desc "<idea>"` and apply its verdict
+  before touching anything else: KEEP means the commit stays; anything else
+  (DISCARD, FAIL, CRASH, ABORTED) means `git reset --hard HEAD~1`.
+- Never redirect eval's stdout into run.log. The harness already holds that
+  file open, and a second writer destroys the transcript you need when
+  something FAILs.
+- Never edit program.md, .autor3search/config.yaml, results.tsv, any
+  *.test.* / *.spec.* / *.bench.* file, package.json, a lockfile, or a
+  Vitest/Vite config file. They are not yours.
+- Never pass -force to any autor3search-javascript command. (I may run
+  `autor3search-javascript stop -force` myself; that one is mine, not yours.)
+- Print one context line before each experiment, so I can see where you are:
+  [exp <n> | <branch> | vs <measure_commit> | stop: autor3search-javascript stop]
+
+Run the loop until I stop you. I stop you by running
+`autor3search-javascript stop` in my own terminal — you will see it as
+"stop_requested": true in a verdict. When you do: apply that verdict, do not
+start another experiment, run `autor3search-javascript report`, summarize what
+you tried, and exit the loop.
+```