diff --git a/src/ssb.db.h b/src/ssb.db.h
index 1a479103..a8777d48 100644
--- a/src/ssb.db.h
+++ b/src/ssb.db.h
@@ -13,29 +13,112 @@
 
 #include <stdbool.h>
 
+/** An SSB instance. */
 typedef struct _tf_ssb_t tf_ssb_t;
 
+/**
+** Initialize the database writer for an SSB instance.
+** @param ssb The SSB instance.
+*/
 void tf_ssb_db_init(tf_ssb_t* ssb);
+
+/**
+** Configure an opened SQLite database for reading.
+*/
 void tf_ssb_db_init_reader(sqlite3* db);
+
+/**
+** Get message content by ID.
+** @param ssb The SSB instance.
+** @param id The message identifier.
+** @param[out] out_blob Populated with the message content.
+** @param[out] out_size POpulated with the size of the message content.
+** @return true If the message content was found and retrieved.
+*/
 bool tf_ssb_db_message_content_get(tf_ssb_t* ssb, const char* id, uint8_t** out_blob, size_t* out_size);
+
+/**
+** Determine whether a blob is in the database by ID.
+** @param ssb The SSB instasnce.
+** @param id The blob identifier.
+** @return true If the blob is in the database.
+*/
 bool tf_ssb_db_blob_has(tf_ssb_t* ssb, const char* id);
+
+/**
+** Retrieve a blob from the database.
+** @param ssb The SSB instance.
+** @param id The blob identifier.
+** @param[out] out_blob Populated with the blob data.
+** @param[out] out_size The size of the blob data.
+** @return true If the blob was found and retrieved.
+*/
 bool tf_ssb_db_blob_get(tf_ssb_t* ssb, const char* id, uint8_t** out_blob, size_t* out_size);
 
+/**
+** A function called when a message is stored in the database.
+** @param id The message identifier.
+** @param stored True if the message wasn't already in the database.
+** @param user_data The user data.
+*/
 typedef void(tf_ssb_db_store_message_callback_t)(const char* id, bool stored, void* user_data);
+
+/**
+** Store a message in the database.
+** @param ssb The SSB instance.
+** @param context The JS context.
+** @param id The message identifier.
+** @param val The message object.
+** @param signature The signature of the message.
+** @param sequence_before_author The order of the message fields.
+** @param callback A callback to call upon completion.
+** @param user_data User data for the callback.
+*/
 void tf_ssb_db_store_message(tf_ssb_t* ssb, JSContext* context, const char* id, JSValue val, const char* signature, bool sequence_before_author,
 	tf_ssb_db_store_message_callback_t* callback, void* user_data);
 
+/**
+** A function called when a block is stored in the database.
+** @param id The blob identifier.
+** @param is_new True if the blob wasn't already in the database.
+** @param user_data The user data.
+*/
 typedef void(tf_ssb_db_blob_store_callback_t)(const char* id, bool is_new, void* user_data);
+
+/**
+** Store a blob in the database asynchronously.
+** @param ssb The SSB instance.
+** @param blob The blob data.
+** @param size The size of the blob data.
+** @param callback A callback to call upon completion.
+** @param user_data User data for the callback.
+*/
 void tf_ssb_db_blob_store_async(tf_ssb_t* ssb, const uint8_t* blob, size_t size, tf_ssb_db_blob_store_callback_t* callback, void* user_data);
+
+/**
+** Store a blob in the database and wait for the operation to complete.
+** @param ssb The SSB instance.
+** @param blob The blob data.
+** @param size The size of the blob.
+** @param[out] out_id Populated with the blob identifier.
+** @param out_id_size The size of the out_id buffer.
+** @param[out] out_new True if the blob wasn't already in the datbase.
+*/
 bool tf_ssb_db_blob_store(tf_ssb_t* ssb, const uint8_t* blob, size_t size, char* out_id, size_t out_id_size, bool* out_new);
 
+/**
+** Get a message by its identifier.
+** @param ssb The SSB instance.
+** @param id The message identifier.
+** @param is_keys Whether to produce {"key": id, "value": message, "timestamp": ts} or just the message.
+** @return The message.
+*/
 JSValue tf_ssb_db_get_message_by_id(tf_ssb_t* ssb, const char* id, bool is_keys);
 bool tf_ssb_db_get_message_by_author_and_sequence(
 	tf_ssb_t* ssb, const char* author, int64_t sequence, char* out_message_id, size_t out_message_id_size, double* out_timestamp, char** out_content);
 bool tf_ssb_db_get_latest_message_by_author(tf_ssb_t* ssb, const char* author, int64_t* out_sequence, char* out_message_id, size_t out_message_id_size);
 JSValue tf_ssb_db_visit_query(tf_ssb_t* ssb, const char* query, const JSValue binds, void (*callback)(JSValue row, void* user_data), void* user_data);
 
-typedef struct sqlite3 sqlite3;
 bool tf_ssb_db_check(sqlite3* db, const char* author);
 
 int tf_ssb_db_identity_get_count_for_user(tf_ssb_t* ssb, const char* user);