EmergentDB Python SDK

Official Python SDK for EmergentDB — a managed vector database for embeddings.

Install

pip install emergentdb

Quick Start

from emergentdb import EmergentDB

db = EmergentDB("emdb_your_api_key")

# Insert a vector
db.insert(1, [0.1, 0.2, ...], metadata={"title": "My document"})

# Search
results = db.search([0.1, 0.2, ...], k=5, include_metadata=True)

# Delete
db.delete(1)

API

EmergentDB(api_key, base_url?, timeout?)

Create a client. API key must start with emdb_.

Param	Type	Default
base_url	str	https://api.emergentdb.com
timeout	float	30.0

Supports context manager:

with EmergentDB("emdb_your_key") as db:
    db.insert(1, vector)

db.insert(id, vector, metadata?, namespace?)

Insert a single vector. Re-inserting the same ID in the same namespace upserts it.

result = db.insert(1, embedding, metadata={"title": "Doc"}, namespace="production")
# InsertResult(success=True, id=1, namespace="production", upserted=False)

db.batch_insert(vectors, namespace?)

Insert up to 1,000 vectors in one call.

result = db.batch_insert([
    {"id": 1, "vector": [...], "metadata": {"title": "Doc 1"}},
    {"id": 2, "vector": [...], "metadata": {"title": "Doc 2"}},
], namespace="production")
# BatchInsertResult(success=True, ids=[1, 2], count=2, new_count=2, upserted_count=0)

db.batch_insert_all(vectors, namespace?)

Insert any number of vectors — auto-chunks into batches of 1,000.

result = db.batch_insert_all(large_vector_list, namespace="production")

db.search(vector, k?, include_metadata?, namespace?)

Search for similar vectors.

Param	Type	Default
k	int	10
include_metadata	bool	False
namespace	str	"default"

results = db.search(query_vector, k=10, include_metadata=True, namespace="production")

for r in results.results:
    print(f"{r.id}: {r.score} — {r.metadata.get('title')}")

Scores are distances — lower = more similar.

db.delete(id, namespace?)

Delete a vector by ID.

result = db.delete(1, namespace="production")
# DeleteResult(deleted=True, id=1, namespace="production")

db.list_namespaces()

List all namespaces that have vectors.

namespaces = db.list_namespaces()
# ["default", "production", "staging"]

Namespaces

Namespaces partition your vectors into isolated groups. Created automatically on first insert.

# Insert into different namespaces
db.insert(1, vec, metadata={"title": "Prod doc"}, namespace="production")
db.insert(1, vec, metadata={"title": "Dev doc"}, namespace="development")

# Search is scoped to one namespace
prod = db.search(q, namespace="production")
dev = db.search(q, namespace="development")

Vector IDs are unique per namespace — ID 1 in "production" and ID 1 in "development" are completely separate vectors.

With OpenAI Embeddings

import openai
from emergentdb import EmergentDB

client = openai.OpenAI()
db = EmergentDB("emdb_your_key")

# Generate embedding
resp = client.embeddings.create(
    model="text-embedding-3-small",
    input="How do neural networks learn?"
)

# Store it
db.insert(1, resp.data[0].embedding, metadata={
    "title": "Neural Networks 101",
    "tags": ["ml", "neural-networks"],
})

# Search later
query_resp = client.embeddings.create(
    model="text-embedding-3-small",
    input="What is backpropagation?"
)
results = db.search(query_resp.data[0].embedding, k=5, include_metadata=True)

for r in results.results:
    print(f"{r.score:.4f} — {r.metadata.get('title', 'untitled')}")

Error Handling

from emergentdb import EmergentDB, EmergentDBError

try:
    db.insert(1, vector)
except EmergentDBError as e:
    print(e.status_code)  # 401, 402, 400, etc.
    print(e.body)         # Full error response

Status	Meaning
400	Invalid request
401	Bad or missing API key
402	Vector capacity exceeded
404	Vector not found
500	Server error

Response Models

All response types are dhi BaseModel classes (Pydantic v2-compatible):

from emergentdb import (
    InsertResult,
    BatchInsertResult,
    SearchResult,
    SearchResponse,
    DeleteResult,
)

# Use like Pydantic models
result = db.insert(1, vector)
print(result.model_dump())
print(result.model_dump_json())

Requirements

• Python >= 3.8
• httpx >= 0.24.0
• dhi >= 1.1.3

QDKV — Metadata Cache

Every EmergentDB account includes 10K QDKV keys free — same emdb_ API key, no new signup.

QDKV is a SIMD-accelerated key-value cache (Redis alternative) for session state, feature flags, rate counters, and anything that needs sub-millisecond reads at the edge.

HTTP API

# SET
curl -X POST https://api.emergentdb.com/qdkv/set \
  -H "Authorization: Bearer emdb_YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{ "key": "session:abc", "value": "{\"userId\":42}", "ttlMs": 3600000 }'

# GET
curl https://api.emergentdb.com/qdkv/get/session:abc \
  -H "Authorization: Bearer emdb_YOUR_API_KEY"
# → { "value": "{\"userId\":42}", "found": true }

# DEL
curl -X DELETE https://api.emergentdb.com/qdkv/del/session:abc \
  -H "Authorization: Bearer emdb_YOUR_API_KEY"

# MGET (batch)
curl -X POST https://api.emergentdb.com/qdkv/mget \
  -H "Authorization: Bearer emdb_YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{ "keys": ["session:abc", "session:xyz"] }'
# → { "values": { "session:abc": "{...}", "session:xyz": null } }

# Stats
curl https://api.emergentdb.com/qdkv/stats \
  -H "Authorization: Bearer emdb_YOUR_API_KEY"
# → { "keyCount": 42, "maxKeys": 10000, "plan": "free", "percentUsed": 0 }

In Python (httpx)

import httpx
import json

KEY = "emdb_YOUR_API_KEY"
BASE = "https://api.emergentdb.com"
headers = {"Authorization": f"Bearer {KEY}", "Content-Type": "application/json"}

with httpx.Client() as client:
    # SET
    client.post(f"{BASE}/qdkv/set", headers=headers, json={
        "key": "user:42:prefs",
        "value": json.dumps({"theme": "dark"}),
        "ttlMs": 86400_000,
    })

    # GET
    r = client.get(f"{BASE}/qdkv/get/user:42:prefs", headers=headers).json()
    if r["found"]:
        prefs = json.loads(r["value"])

    # MGET
    r = client.post(f"{BASE}/qdkv/mget", headers=headers,
                    json={"keys": ["user:42:prefs", "user:99:prefs"]}).json()
    # r["values"] → { "user:42:prefs": "{...}", "user:99:prefs": None }

    # DEL
    client.delete(f"{BASE}/qdkv/del/user:42:prefs", headers=headers)

Pricing

Plan	Max Keys	Price
Free (all accounts)	10,000	$0/mo
Launch	1,000,000	$29/mo
Scale	10,000,000	$99/mo

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License

MIT