Persistent memory for AI agents

Agents that
remember.

Inkumbulo is a REST API memory store built for the agent economy. Write, read, and semantically search memories across sessions — billed per operation, no infrastructure required.

Free tier: 10,000 ops/month

Three calls.
Infinite context.

Give any agent persistent memory with a single HTTP call. No SDKs required, no vector database to manage, no infrastructure to provision.

Inkumbulo handles storage, embeddings, and semantic search — you just read and write.

  • POST /v1/memory — write a memory
  • GET /v1/memory/{key} — read by key
  • POST /v1/memory/search — semantic recall
  • GET /v1/memory — list agent memories
  • DEL /v1/memory/{key} — delete
agent_memory.py
# Write a memory
requests.post("https://api.inkumbulo.net/v1/memory",
  headers={"X-API-Key": api_key},
  json={
    "key": "user_preference",
    "value": "prefers concise answers",
    "agent_id": "agent-001",
    "tags": ["preference", "style"]
  }
)

# Semantic search across memories
requests.post("https://api.inkumbulo.net/v1/memory/search",
  headers={"X-API-Key": api_key},
  json={
    "query": "how does this user like responses?",
    "agent_id": "agent-001",
    "top_k": 5
  }
)

# Response
{
  "results": [{
    "key": "user_preference",
    "value": "prefers concise answers",
    "score": 0.9421
  }],
  "total": 1
}

Architecture

01

Get an API key

Sign up and receive your namespace API key. All memories are scoped to your namespace — fully isolated.

02

Write memories

POST any JSON value with a key and agent ID. Embeddings are generated automatically for semantic search.

03

Recall semantically

Query in natural language. Inkumbulo returns the most relevant memories using cosine similarity scoring.

04

Pay per op

No monthly minimums. Each read, write, and search is billed as a micro-transaction via Stripe.

Operation
Price / op
Latency
Notes
WRITE Write memory
$0.0002
~50ms
Includes auto-embedding
READ Read by key
$0.0001
<5ms
Redis hot cache
SEARCH Semantic search
$0.0005
~120ms
Vector similarity
DELETE Delete memory
$0.0000
<10ms
Always free
10,000 free operations every month on all plans. No credit card required to start.

Early access

Build agents that
never forget.

Inkumbulo is currently in private beta. Join the waitlist and we'll send you an API key when your spot is ready.

No spam. API key sent directly. Unsubscribe anytime.

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