diff --git a/database/__init__.py b/database/__init__.py
index 30b7d19..ccf6e66 100644
--- a/database/__init__.py
+++ b/database/__init__.py
@@ -9,6 +9,7 @@
 from .jixia_db import load_data
 from .vector_db import create_vector_db
 from .create_schema import create_schema
+from .migrate import migrate
 
 
 def main():
@@ -23,6 +24,7 @@ def main():
         "prefixes",
         help="Comma-separated list of module prefixes to be included in the index; e.g., Init,Mathlib",
     )
+    jixia_parser.add_argument("--project-name")
     informal_parser = subparser.add_parser("informal")
     informal_parser.set_defaults(command="informal")
     informal_parser.add_argument("--batch-size", type=int, default=50)
@@ -39,16 +41,19 @@ def main():
     vector_db_parser = subparser.add_parser("vector-db")
     vector_db_parser.set_defaults(command="vector-db")
     vector_db_parser.add_argument("--batch-size", type=int, default=8)
+    vector_db_parser.add_argument("--project-name")
 
     args = parser.parse_args()
 
     with psycopg.connect(os.environ["CONNECTION_STRING"], autocommit=True) as conn:
+        if args.command == "migrate":
+            migrate(conn)
         if args.command == "schema":
             create_schema(conn)
         elif args.command == "jixia":
             project = LeanProject(args.project_root)
             prefixes = [parse_name(p) for p in args.prefixes.split(",")]
-            load_data(project, prefixes, conn)
+            load_data(project, prefixes, conn, project_name=args.project_name)
         elif args.command == "informal":
             generate_informal(
                 conn,
@@ -57,4 +62,4 @@ def main():
                 limit_num_per_level=args.limit_num_per_level,
             )
         elif args.command == "vector-db":
-            create_vector_db(conn, os.environ["CHROMA_PATH"], batch_size=args.batch_size)
+            create_vector_db(conn, os.environ["CHROMA_PATH"], batch_size=args.batch_size, project_name=args.project_name)
diff --git a/database/informalize.py b/database/informalize.py
index 11123d7..2fbbb29 100644
--- a/database/informalize.py
+++ b/database/informalize.py
@@ -16,9 +16,12 @@ def find_neighbor(conn: Connection, module_name: LeanName, index: int, num_neigh
     with conn.cursor(row_factory=args_row(TranslatedItem)) as cursor:
         cursor.execute(
             """
-            SELECT d.name, d.signature, i.name, i.description
+            SELECT s.name, d.signature, d.value, d.docstring, d.kind, i.name, i.description, d.signature
             FROM
-                declaration d
+                symbol s
+                INNER JOIN declaration d ON s.name = d.name
+                INNER JOIN module m ON s.module_name = m.name
+                INNER JOIN level l ON s.name = l.symbol_name
                 LEFT JOIN informal i ON d.name = i.symbol_name
             WHERE
                 d.module_name = %s AND d.index >= %s AND d.index <= %s
@@ -32,11 +35,14 @@ def find_dependency(conn: Connection, name: LeanName) -> list[TranslatedItem]:
     with conn.cursor(row_factory=args_row(TranslatedItem)) as cursor:
         cursor.execute(
             """
-            SELECT d.name, d.signature, i.name, i.description
+            SELECT s.name, d.signature, d.value, d.docstring, d.kind, i.name, i.description, d.signature
             FROM
-                declaration d
-                INNER JOIN dependency e ON d.name = e.target
+                symbol s
+                INNER JOIN declaration d ON s.name = d.name
+                INNER JOIN module m ON s.module_name = m.name
+                INNER JOIN level l ON s.name = l.symbol_name
                 LEFT JOIN informal i ON d.name = i.symbol_name
+                INNER JOIN dependency e ON d.name = e.target
             WHERE
                 e.source = %s
             """,
@@ -57,7 +63,7 @@ def generate_informal(conn: Connection, batch_size: int = 50, limit_level: int |
     with conn.cursor() as cursor, conn.cursor() as insert_cursor:
         for level in range(max_level + 1):
             query = """
-                SELECT s.name, d.signature, d.value, d.docstring, d.kind, m.docstring, d.module_name, d.index
+                SELECT s.name, d.signature, d.value, d.docstring, d.kind, m.docstring, d.module_name, d.index, m.project_name
                 FROM
                     symbol s
                     INNER JOIN declaration d ON s.name = d.name
@@ -92,7 +98,7 @@ async def translate_and_insert(name: LeanName, data: TranslationInput):
 
                 tasks.clear()
                 for row in batch:
-                    name, signature, value, docstring, kind, header, module_name, index = row
+                    name, signature, value, docstring, kind, header, module_name, index, project_name = row
 
                     logger.info("translating %s", name)
                     neighbor = find_neighbor(conn, module_name, index)
@@ -107,6 +113,7 @@ async def translate_and_insert(name: LeanName, data: TranslationInput):
                         header=header,
                         neighbor=neighbor,
                         dependency=dependency,
+                        project_name=project_name,
                     )
                     tasks.append(translate_and_insert(name, ti))
 
diff --git a/database/jixia_db.py b/database/jixia_db.py
index 03cfc9a..be3da36 100644
--- a/database/jixia_db.py
+++ b/database/jixia_db.py
@@ -24,12 +24,12 @@ def _get_value(declaration: Declaration, module_content):
     else:
         return None
 
-def load_data(project: LeanProject, prefixes: list[LeanName], conn: Connection):
+def load_data(project: LeanProject, prefixes: list[LeanName], conn: Connection, project_name):
     def load_module(data: Iterable[LeanName], base_dir: Path):
-        values = ((Jsonb(m), project.path_of_module(m, base_dir).read_bytes(), project.load_module_info(m).docstring) for m in data)
+        values = ((Jsonb(m), project.path_of_module(m, base_dir).read_bytes(), project.load_module_info(m).docstring, project_name) for m in data)
         cursor.executemany(
             """
-            INSERT INTO module (name, content, docstring) VALUES (%s, %s, %s) ON CONFLICT DO NOTHING
+            INSERT INTO module (name, content, docstring, project_name) VALUES (%s, %s, %s, %s) ON CONFLICT DO NOTHING
             """,
             values,
         )
diff --git a/database/migrate.py b/database/migrate.py
new file mode 100644
index 0000000..81f33b2
--- /dev/null
+++ b/database/migrate.py
@@ -0,0 +1,6 @@
+from psycopg import Connection
+
+def migrate(conn: Connection):
+    with conn.cursor() as cursor:
+        cursor.execute("ALTER TABLE module ADD COLUMN project_name TEXT")
+        cursor.execute("UPDATE module SET project_name = 'mathlib'")
diff --git a/database/translate.py b/database/translate.py
index d2d9da4..df772e2 100644
--- a/database/translate.py
+++ b/database/translate.py
@@ -4,11 +4,13 @@
 import re
 from dataclasses import dataclass
 from json import JSONDecodeError
+import xml.etree.ElementTree as ET
 
 import jinja2
 from jinja2 import Environment, FileSystemLoader
 from jixia.structs import DeclarationKind, LeanName, pp_name
 from openai import AsyncOpenAI
+from prompt.metaprogramming import metaprogramming_prompt
 
 logger = logging.getLogger(__name__)
 
@@ -16,10 +18,16 @@
 @dataclass
 class TranslatedItem:
     name: LeanName
-    description: str
+    signature: str
+    value: str | None
+    docstring: str | None
+    kind: DeclarationKind
+
     informal_name: str | None
     informal_description: str | None
 
+    # The "description" field is a copypaste of the more appropriately named "signature" field, it's here for backwards compatibility, and can be removed when all prompts are switch to using the "signature" field.
+    description: str
 
 @dataclass
 class TranslationInput:
@@ -28,11 +36,13 @@ class TranslationInput:
     value: str | None
     docstring: str | None
     kind: DeclarationKind
-    header: str
 
     neighbor: list[TranslatedItem]
     dependency: list[TranslatedItem]
 
+    header: str
+    project_name: str
+
     @property
     def value_matters(self):
         return self.kind in ["classInductive", "definition", "inductive", "structure"]
@@ -60,7 +70,12 @@ async def translate(self, data: TranslationInput) -> tuple[str, str] | None:
             kind = "instance"
         else:
             kind = "definition" if data.value_matters else "theorem"
-        prompt = await self.template[kind].render_async(input=data)
+        
+        if data.project_name == "metaprogramming":
+            prompt = metaprogramming_prompt(data)
+        else:
+            prompt = await self.template[kind].render_async(input=data)
+
         if os.environ["DRY_RUN"] == "true":
             logger.info("DRY_RUN:skipped informalization: %s", data.name)
             return "Fake Name", f"Fake Description\nPrompt:\n{data}"
@@ -80,10 +95,17 @@ async def translate(self, data: TranslationInput) -> tuple[str, str] | None:
                 await asyncio.sleep(1)
                 continue
             answer = response.choices[0].message.content
-            try:
-                name = self.pattern_name.search(answer).group(1)
-                description = self.pattern_description.search(answer).group(1)
-            except AttributeError:  # unable to parse the result, at least one of the regex did not match
-                logger.info("while translating %s: unable to parse the result; retrying", data.name)
-                continue
+            if data.project_name == "metaprogramming":
+                root = ET.fromstring(f"<root>{answer}</root>")
+                name = root.findtext('informal_name')
+                description = root.findtext('informal_description')
+                if (name is None or description is None):
+                    continue
+            else:
+                try:
+                    name = self.pattern_name.search(answer).group(1)
+                    description = self.pattern_description.search(answer).group(1)
+                except AttributeError:  # unable to parse the result, at least one of the regex did not match
+                    logger.info("while translating %s: unable to parse the result; retrying", data.name)
+                    continue
             return name.strip(), description.strip()
diff --git a/database/vector_db.py b/database/vector_db.py
index 1b458eb..a80a949 100644
--- a/database/vector_db.py
+++ b/database/vector_db.py
@@ -2,6 +2,7 @@
 import logging
 
 import chromadb
+from chromadb.api.types import Metadata, ID, Embedding, Document
 from jixia.structs import pp_name
 from psycopg import Connection
 
@@ -9,7 +10,7 @@
 
 logger = logging.getLogger(__name__)
 
-def create_vector_db(conn: Connection, path: str, batch_size: int):
+def create_vector_db(conn: Connection, path: str, batch_size: int, project_name: str):
     with open("prompt/embedding_instruction.txt") as fp:
         instruction = fp.read()
     MistralEmbedding.setup_env()
@@ -23,23 +24,32 @@ def create_vector_db(conn: Connection, path: str, batch_size: int):
     )
 
     with conn.cursor() as cursor:
-        cursor.execute("""
-            SELECT d.module_name, d.index, d.kind, d.name, d.signature, i.name, i.description
-            FROM
-                declaration d INNER JOIN informal i ON d.name = i.symbol_name
-            WHERE d.visible = TRUE
-        """)
+        cursor.execute(
+            """
+                SELECT d.module_name, d.index, d.kind, d.name, d.signature, i.name, i.description, m.project_name
+                FROM
+                    declaration d
+                    INNER JOIN informal i ON d.name = i.symbol_name
+                    INNER JOIN module m ON d.module_name = m.name
+                WHERE d.visible = TRUE AND m.project_name = %(project_name)s
+            """,
+            {
+                "project_name": project_name
+            }
+        )
 
         while batch := cursor.fetchmany(batch_size):
-            batch_doc = []
-            batch_id = []
-            for module_name, index, kind, name, signature, informal_name, informal_description in batch:
+            batch_doc: list[Document] = []
+            batch_id: list[ID] = []
+            metadatas: list[Metadata] = []
+            for module_name, index, kind, name, signature, informal_name, informal_description, this_row_project_name in batch:
                 batch_doc.append(f"{kind} {name} {signature}\n{informal_name}: {informal_description}")
                 # NOTE: we use module name + index as document id as they cannot contain special characters
                 batch_id.append(f"{pp_name(module_name)}:{index}")
+                metadatas.append({ "project_name": this_row_project_name })
                 if os.environ["DRY_RUN"] == "true":
                     logger.info("DRY_RUN:skipped embedding: %s", f"{kind} {name} {signature} {informal_name}")
             if os.environ["DRY_RUN"] == "true":
                 return
-            batch_embedding = embedding.embed(batch_doc)
-            collection.add(embeddings=batch_embedding, ids=batch_id)
+            batch_embedding : list[Embedding] = embedding.embed(batch_doc)
+            collection.add(embeddings=batch_embedding, ids=batch_id, metadatas=metadatas)
diff --git a/prompt/metaprogramming.py b/prompt/metaprogramming.py
new file mode 100644
index 0000000..c15a603
--- /dev/null
+++ b/prompt/metaprogramming.py
@@ -0,0 +1,42 @@
+from database.translate import TranslatedItem, TranslationInput
+
+
+def format_declaration(declaration: TranslatedItem):
+    result : list[str] = []
+
+    result.append("<declaration>")
+    result.append(f"<docstring>{declaration.docstring}</docstring>")
+    result.append(f"<name>{declaration.kind} {declaration.name}</name>")
+    result.append(f"<signature>{declaration.signature}</signature>")
+    result.append(f"<definition>{declaration.value}</definition>")
+    if declaration.informal_name is not None:
+        result.append(f"<informal_name>{declaration.informal_name}</informal_name>")
+    if declaration.informal_description is not None:
+        result.append(f"<informal_description>{declaration.informal_description}</informal_description>")
+    result.append("</declaration>")
+
+    return "\n".join(result)
+
+def metaprogramming_prompt(input : TranslationInput):
+    result : list[str] = []
+
+    result.append("<instructions>Your task is to create an informal description of the following metaprogramming declaration in Lean 4. Later on, we will use them to create embedding vectors.</instructions>")
+
+    result.append(f"<file_docstring explanation='This is a docstring in the beginning of the .lean file where the declaration you are informalizing is located'>{input.header}</file_docstring>")
+
+    result.append("<neighbor_declarations explanation='These are the descriptions of the declarations that are located nearby in this Lean file.'>")
+    for neighbor in input.neighbor:
+        result.append(format_declaration(neighbor)) # type: ignore
+    result.append("</neighbor_declarations>")
+
+    result.append("<dependent_declarations explanation='These are the descriptions of the declarations that our declaration depends on.'>")
+    for dependency in input.dependency:
+        result.append(format_declaration(dependency)) # type: ignore
+    result.append("</dependent_declarations>")
+
+    result.append("<instructions>Finally, here is the declaration that you should create the description of.</instructions>")
+    result.append(format_declaration(input)) # type: ignore
+
+    result.append("<instructions>Please put your informal description into the following format: <informal_name>...<informal_name> (this is where you put the informal name of this Lean 4 declaration), <informal_description>...</informal_description> (this is where you put the informal description of this Lean 4 declaration). You can put your thinking into <thinking>...</thinking> tags.</instructions>")
+
+    return "\n".join(result)