diff --git a/.claude/skills/create-lure/SKILL.md b/.claude/skills/create-lure/SKILL.md
index 2482b41..8492254 100644
--- a/.claude/skills/create-lure/SKILL.md
+++ b/.claude/skills/create-lure/SKILL.md
@@ -57,15 +57,16 @@ config:
 
 ### Template body
 
-Below the frontmatter is an [eta](https://eta.js.org) template. Write it as a
-natural language prompt for the LLM that will process the webhook. The
-following are available on `it`:
+Below the frontmatter is a [Liquid](https://liquidjs.com) template. Write it
+as a natural language prompt for the LLM that will process the webhook. The
+following variables are available:
 
-- `it.payload` — the request body (parsed JSON for `contentType: json`)
-- `it.headers` — request headers as a `Headers` object (`it.headers.get("X-Foo")`)
-- `it.query` — query string as a `URLSearchParams` object (`it.query.get("foo")`)
+- `payload` — the request body (parsed JSON for `contentType: json`)
+- `headers` — request headers as a plain object with lowercase keys (e.g. `{{ headers["x-my-header"] }}`)
+- `query` — query string as a plain object (e.g. `{{ query.foo }}`)
 
-Use `<%= expression %>` to interpolate values into the prompt.
+Use `{{ expression }}` to interpolate values and `{% if %}...{% endif %}` for
+conditionals.
 
 ## Notes
 
diff --git a/README.md b/README.md
index 40c6af1..0d070f8 100644
--- a/README.md
+++ b/README.md
@@ -38,10 +38,10 @@ config:
   someValue: 3
 ---
 
-You have received information about a <%= it.payload.event %> event on My
+You have received information about a {{ payload.event }} event on My
 Service. Read the following payload and respond according to your skills:
 
-<%= it.payload.body %>
+{{ payload.body }}
 ```
 
 Different verification methods can be supported, for generic implementations or
@@ -50,13 +50,18 @@ lure.
 
 ### Template scope
 
-Templates are evaluated using [eta](https://eta.js.org). The following
-properties are available on `it`:
+Templates are evaluated using [Liquid](https://liquidjs.com). The following
+variables are available:
 
-- `it.payload`: The request body. For `contentType: json`, this is the parsed
+- `payload`: The request body. For `contentType: json`, this is the parsed
   JSON value.
-- `it.headers`: The request headers as a [`Headers`](https://developer.mozilla.org/en-US/docs/Web/API/Headers) object.
-- `it.query`: The query string parameters as a [`URLSearchParams`](https://developer.mozilla.org/en-US/docs/Web/API/URLSearchParams) object.
+- `headers`: The request headers as a plain object with lowercase keys
+  (e.g. `{{ headers["x-my-header"] }}`).
+- `query`: The query string parameters as a plain object
+  (e.g. `{{ query.foo }}`).
+
+Use `{{ expression }}` to interpolate values and `{% if %}...{% endif %}` for
+conditionals.
 
 ## Usage
 
@@ -129,15 +134,16 @@ config:
 
 ## Template body
 
-Below the frontmatter is an eta template (https://eta.js.org). Write it as a
-natural language prompt for the LLM that will process the webhook. The
-following are available on `it`:
+Below the frontmatter is a Liquid template (https://liquidjs.com). Write it as
+a natural language prompt for the LLM that will process the webhook. The
+following variables are available:
 
-- `it.payload` — the request body (parsed JSON for `contentType: json`)
-- `it.headers` — request headers as a Headers object (`it.headers.get("X-Foo")`)
-- `it.query` — query string as a URLSearchParams object (`it.query.get("foo")`)
+- `payload` — the request body (parsed JSON for `contentType: json`)
+- `headers` — request headers as a plain object with lowercase keys (e.g. `{{ headers["x-my-header"] }}`)
+- `query` — query string as a plain object (e.g. `{{ query.foo }}`)
 
-Use `<%= expression %>` to interpolate values into the prompt.
+Use `{{ expression }}` to interpolate values and `{% if %}...{% endif %}` for
+conditionals.
 
 ## Task