diff --git a/.sealog/changes/1-5-0.edn b/.sealog/changes/1-5-0.edn
new file mode 100644
index 0000000..12bc30d
--- /dev/null
+++ b/.sealog/changes/1-5-0.edn
@@ -0,0 +1,11 @@
+{:version      {:major 1
+                :minor 5
+                :patch 0}
+ :version-type :semver3
+ :changes      {:added      ["`check` command to [verify the current configuration, changelog entries, and project version.](https://github.com/Wall-Brew-Co/lein-sealog#check-sealog-configuration)"]
+                :changed    []
+                :deprecated []
+                :removed    []
+                :fixed      []
+                :security   []}
+ :timestamp    "2024-05-03T00:46:45.488497Z"}
diff --git a/CHANGELOG.md b/CHANGELOG.md
index bef099e..7a050a4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 
 ## Table of Contents
 
+* [1.5.0 - 2024-05-03](#150---2024-05-03)
 * [1.4.0 - 2024-05-01](#140---2024-05-01)
 * [1.3.0 - 2024-03-13](#130---2024-03-13)
 * [1.2.1 - 2024-03-10](#121---2024-03-10)
@@ -15,6 +16,11 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 * [1.0.1 - 2022-10-23](#101---2022-10-23)
 * [1.0.0 - 2022-10-23](#100---2022-10-23)
 
+## 1.5.0 - 2024-05-03
+
+* Added
+  * `check` command to [verify the current configuration, changelog entries, and project version.](https://github.com/Wall-Brew-Co/lein-sealog#check-sealog-configuration)
+
 ## 1.4.0 - 2024-05-01
 
 * Added
diff --git a/README.md b/README.md
index 908d797..1cbd497 100644
--- a/README.md
+++ b/README.md
@@ -36,6 +36,7 @@ From the root of your project directory, you may invoke the following commands:
 * `render` - To compile all changelog entry files into a markdown Changelog
 * `insert` - To update the most recent changelog entry file with new notes
 * `version` - To print the current project versions from Leiningen and sealog
+* `check` - To validate Sealog's configuration, changelog entry files, the changelog, and the project version
 * `help` - To view the help text of sealog or any command
 
 Most commands will accept several options, which can be configured by the command line arguments passed in or by a configuration file located at `.sealog/config.edn`.
@@ -228,6 +229,55 @@ Reading from .sealog/changes/1-3-0.edn
 1.3.0
 ```
 
+### Check Sealog Configuration
+
+Sealog relies on convention to produce sane changelogs.
+To validate that Sealog is configured appropriately, you may run a series of introspective checks.
+
+```sh
+$ lein sealog check
+Reading from .sealog/config.edn
+Sealog configuration is valid.
+Reading from .sealog/config.edn
+Changelog entry directory contains at least one file.
+Reading from .sealog/changes/1-0-1.edn
+Reading from .sealog/changes/1-2-0.edn
+Reading from .sealog/changes/1-3-0.edn
+All changelog entries are valid.
+Reading from .sealog/changes/1-0-1.edn
+Reading from .sealog/changes/1-2-0.edn
+Reading from .sealog/changes/1-3-0.edn
+All changelog entries use the same version type.
+Reading from .sealog/changes/1-0-1.edn
+Reading from .sealog/changes/1-2-0.edn
+Reading from .sealog/changes/1-3-0.edn
+All changelog entries have distinct versions.
+Reading from .sealog/changes/1-0-1.edn
+Reading from .sealog/changes/1-2-0.edn
+Reading from .sealog/changes/1-3-0.edn
+Project version matches latest changelog entry.
+Reading from .sealog/changes/1-0-1.edn
+Reading from .sealog/changes/1-2-0.edn
+Reading from .sealog/changes/1-3-0.edn
+Rendered changelog contains all changelog entries.
+All checks passed
+```
+
+Checks:
+
+* If a configuration file exists, it must be valid.
+  * If no configuration file exists, sealog will assume its default configuration
+* The changelog directory must contain at least one file.
+* The changelog directory must contain only valid changelog entries.
+  * If invalid files are found, the issues will be printed to STDERR with `clojure.spec/explain-str`
+* All changelog entry files must use the same version type.
+  * If mismatched version types are found, all version types will be printed to STDERR
+* All changelog entry files must have a distinct version.
+  * If duplicate versions are found, all versions will be printed to STDERR
+* The project.clj version must match the latest changelog entry.
+  * If mismatched versions are found, both will be printed to STDERR
+* The rendered changelog must contain all changelog entries.
+
 ### Render Changelog
 
 Finally, Sealog can aggregate and render your change entries into a clean, Markdown format.
diff --git a/pom.xml b/pom.xml
index 7081938..50f1714 100644
--- a/pom.xml
+++ b/pom.xml
@@ -4,7 +4,7 @@
   <groupId>com.wallbrew</groupId>
   <artifactId>lein-sealog</artifactId>
   <packaging>jar</packaging>
-  <version>1.4.0</version>
+  <version>1.5.0</version>
   <name>lein-sealog</name>
   <description>A Leiningen plugin for managing your changelog.</description>
   <url>https://github.com/Wall-Brew-Co/common-beer-format</url>
@@ -20,7 +20,7 @@
     <url>https://github.com/Wall-Brew-Co/lein-sealog</url>
     <connection>scm:git:git://github.com/Wall-Brew-Co/lein-sealog.git</connection>
     <developerConnection>scm:git:ssh://git@github.com/Wall-Brew-Co/lein-sealog.git</developerConnection>
-    <tag>35a7a6065f42d677e414db4f75a379a1422e82f2</tag>
+    <tag>0d6214fa1dbfa0929d716b29eff63aee1082fb2a</tag>
   </scm>
   <build>
     <sourceDirectory>src</sourceDirectory>
diff --git a/project.clj b/project.clj
index bb78c4b..bc5ca2e 100644
--- a/project.clj
+++ b/project.clj
@@ -1,4 +1,4 @@
-(defproject com.wallbrew/lein-sealog "1.4.0"
+(defproject com.wallbrew/lein-sealog "1.5.0"
   :description "A Leiningen plugin for managing your changelog."
   :url "https://github.com/Wall-Brew-Co/common-beer-format"
   :license {:name         "MIT"
diff --git a/src/leiningen/sealog.clj b/src/leiningen/sealog.clj
index 740940b..78cb9ec 100644
--- a/src/leiningen/sealog.clj
+++ b/src/leiningen/sealog.clj
@@ -11,7 +11,7 @@
 (defn unknown-command
   "Formats an error message for an unknown command."
   [command]
-  (str "Unknown command: " command "\nAvailable commands: init, bump, render, insert, version, and help"))
+  (str "Unknown command: " command "\nAvailable commands: init, bump, render, insert, version, check, and help"))
 
 
 (defn top-level-help
@@ -27,6 +27,7 @@
   (main/info "  render  - Render the changelog to the target file.")
   (main/info "  insert  - Insert a note of a specified change type into the most current change file.")
   (main/info "  version - Display information about the current version.")
+  (main/info "  check   - Check the current configuration, changelog etries, and the current project version.")
   (main/info "  help    - Display this help message.")
   (main/info "")
   (main/info "Run `lein sealog help <command>` for more information on a specific command."))
@@ -96,6 +97,24 @@
   (main/info "             If no value is provided, the process will load all sources to compare."))
 
 
+(defn check-help
+  "Display help text for the check command"
+  []
+  (main/info "Usage: lein sealog check")
+  (main/info "")
+  (main/info "Check the current configuration, changelog etries, and the current project version.")
+  (main/info "Will exit abnormally if any issues are found.")
+  (main/info "")
+  (main/info "Checks:")
+  (main/info "  - If a configuration file exists, it must be valid.")
+  (main/info "  - The changelog directory must contain at least one file.")
+  (main/info "  - The changelog directory must contain only valid changelog entries.")
+  (main/info "  - All changelog entry files must use the same version type.")
+  (main/info "  - All changelog entry files must have a distinct version.")
+  (main/info "  - The project version must match the latest changelog entry.")
+  (main/info "  - The rendered changelog must contain all changelog entries."))
+
+
 (defn help
   "Display help text for a specific command."
   [options]
@@ -107,6 +126,7 @@
       "render"   (render-help)
       "insert"   (insert-help)
       "version"  (version-help)
+      "check"    (check-help)
       "help"     (main/info "Run `lein sealog help <command>` for more information on a specific command.")
       (main/info (unknown-command command)))))
 
@@ -125,5 +145,6 @@
       "render"  (sealog/render-changelog options)
       "insert"  (sealog/insert-entry options)
       "version" (sealog/display-version project options)
+      "check"   (sealog/check project options)
       "help"    (help options)
       (main/warn "Unknown command: %s" command))))
diff --git a/src/leiningen/sealog/api.clj b/src/leiningen/sealog/api.clj
index 45a9945..719fa16 100644
--- a/src/leiningen/sealog/api.clj
+++ b/src/leiningen/sealog/api.clj
@@ -78,3 +78,25 @@
           (do (main/info (str "project.clj: " leiningen-version))
               (main/info (str "sealog: " sealog-version)))))
       (System/exit 1))))
+
+
+(defn check
+  "Check the current configuration, changelog entries, and the current project version."
+  [project _opts]
+  (if (impl/valid-configuration?)
+    (let [configuration                (impl/load-config!)
+          some-changelog-entries?      (impl/changelog-entry-directory-is-not-empty? configuration)
+          all-changelog-entries-valid? (impl/changelog-directory-only-contains-valid-files? configuration)
+          same-version-type?           (impl/all-changelog-entries-use-same-version-type? configuration)
+          distinct-versions?           (impl/all-changelog-entries-have-distinct-versions? configuration)]
+      (if (and some-changelog-entries?
+               all-changelog-entries-valid?
+               same-version-type?
+               distinct-versions?)
+        (let [versions-match?     (impl/project-version-matches-latest-changelog-entry? project configuration)
+              changelog-rendered? (impl/rendered-changelog-contains-all-changelog-entries? configuration)]
+          (if (and versions-match? changelog-rendered?)
+            (main/info "All checks passed")
+            (System/exit 1)))
+        (System/exit 1)))
+    (System/exit 1)))
diff --git a/src/leiningen/sealog/impl.clj b/src/leiningen/sealog/impl.clj
index 9deb472..1e362b9 100644
--- a/src/leiningen/sealog/impl.clj
+++ b/src/leiningen/sealog/impl.clj
@@ -203,3 +203,108 @@
   [_opts]
   (io/make-parents (io/file config/config-file))
   (write-file! config/config-file config/default-config))
+
+
+(defn valid-configuration?
+  "Returns true if the configuration is valid."
+  []
+  (let [configuration-contents (if (file-exists? config/config-file)
+                                 (edn/read-string (read-file! config/config-file))
+                                 config/default-config)
+        contents               (st/coerce ::config/config configuration-contents st/string-transformer)
+        valid?                 (spec/valid? ::config/config contents)]
+    (if valid?
+      (do (main/info "Sealog configuration is valid.")
+          true)
+      (do (main/warn (format "Invalid configuration file contents: %s" (spec/explain-str ::config/config contents)))
+          false))))
+
+
+(defn changelog-entry-directory-is-not-empty?
+  "Returns true if the changelog entry directory is not empty."
+  [{:keys [changelog-entry-directory] :as _configuration}]
+  (let [has-files? (boolean (seq (list-all-files changelog-entry-directory)))]
+    (if has-files?
+      (do (main/info "Changelog entry directory contains at least one file.")
+          true)
+      (do (main/warn "Changelog entry directory is empty.")
+          false))))
+
+
+(defn changelog-directory-only-contains-valid-files?
+  "Returns true if the changelog entry directory only contains valid files."
+  [{:keys [changelog-entry-directory] :as _configuration}]
+  (let [files      (list-all-files changelog-entry-directory)
+        valid?     (fn [filepath]
+                     (let [file-content (edn/read-string (read-file! filepath))
+                           contents     (st/coerce ::changelog/entry file-content st/string-transformer)]
+                       (if (spec/valid? ::changelog/entry contents)
+                         true
+                         (do (main/warn (format "Invalid changelog file contents at path `%s`: %s"
+                                                filepath
+                                                (spec/explain-str ::changelog/entry contents)))
+                             false))))
+        all-valid? (every? valid? files)]
+    (if all-valid?
+      (do (main/info "All changelog entries are valid.")
+          true)
+      false)))
+
+
+(defn all-changelog-entries-use-same-version-type?
+  "Returns true if all changelog entries use the same version type."
+  [{:keys [changelog-entry-directory] :as _configuration}]
+  (let [files         (list-all-files changelog-entry-directory)
+        reducer       (fn [acc filepath]
+                        (let [content (edn/read-string (read-file! filepath))]
+                          (conj acc (:version-type content))))
+        version-types (vec (distinct (reduce reducer [] files)))]
+    (if (= 1 (count version-types))
+      (do (main/info "All changelog entries use the same version type.")
+          true)
+      (do (main/warn (format "Changelog entries use multiple version types: %s" version-types))
+          false))))
+
+
+(defn all-changelog-entries-have-distinct-versions?
+  "Returns true if all changelog entries have distinct versions."
+  [{:keys [changelog-entry-directory] :as _configuration}]
+  (let [files         (list-all-files changelog-entry-directory)
+        reducer       (fn [acc filepath]
+                        (let [content (edn/read-string (read-file! filepath))]
+                          (conj acc (:version content))))
+        versions      (vec (distinct (reduce reducer [] files)))]
+    (if (= (count files) (count versions))
+      (do (main/info "All changelog entries have distinct versions.")
+          true)
+      (do (main/warn (format "Changelog entries have non-distinct versions: %s" versions))
+          false))))
+
+
+(defn project-version-matches-latest-changelog-entry?
+  "Returns true if the project version matches the latest changelog entry."
+  [project configuration]
+  (let [changelog              (load-changelog-entry-directory! configuration)
+        latest-changelog-entry (changelog/max-version changelog)
+        sealog-version         (changelog/render-version latest-changelog-entry)
+        leiningen-version      (:version project)]
+    (if (= leiningen-version sealog-version)
+      (do (main/info "Project version matches latest changelog entry.")
+          true)
+      (do (main/warn (format "Project version `%s` does not match latest changelog entry `%s`"
+                             leiningen-version
+                             sealog-version))
+          false))))
+
+
+(defn rendered-changelog-contains-all-changelog-entries?
+  "Returns true if the rendered changelog contains all changelog entries."
+  [{:keys [changelog-filename] :as configuration}]
+  (let [changelog                   (load-changelog-entry-directory! configuration)
+        rendered-changelog          (render-changelog changelog)
+        rendered-changelog-contents (slurp changelog-filename)]
+    (if (= (count rendered-changelog) (count rendered-changelog-contents))
+      (do (main/info "Rendered changelog contains all changelog entries.")
+          true)
+      (do (main/warn "Rendered changelog does not contain all changelog entries. Please run `lein sealog render`.")
+          false))))