engram-metagpt 0.1.0

Engram (Lumetra) memory recipe for MetaGPT — durable cross-run memory for multi-agent simulations.

engram-metagpt

MetaGPT integration for Engram — durable cross-run memory for multi-agent simulations.

MetaGPT's built-in Memory is per-process and dies when Team.run() returns. This recipe gives a role (or a whole team) a hosted Engram bucket they all share, with two integration surfaces designed to be used together:

1. EngramMemory(Memory) — drop-in replacement for role.rc.memory. Every observed message is mirrored to a single Engram bucket, so the next process picks up where the last one left off.
2. EngramStoreMemory / EngramQueryMemory Actions — first-class MetaGPT Action subclasses any role can list under set_actions(...). The agent deliberately stores atomic facts and queries them via Engram's hybrid retrieval pipeline.

Install

pip install -e .
export ENGRAM_API_KEY="eng_live_..."

(Recipe is local-install only — vendored alongside engram-crewai, engram-camel-ai, etc., not on PyPI.)

Get an Engram API key

Sign up at https://lumetra.io — free tier, no card. You'll see an eng_live_… token in your dashboard.

Don't forget BYOK — Engram is bring-your-own-key end-to-end for the LLM that does extraction + synthesis. Configure a provider at https://lumetra.io/models. DeepSeek is what we recommend. Without one, store/query returns HTTP 412.

MetaGPT config

MetaGPT loads ~/.metagpt/config2.yaml at import time. For Anthropic:

llm:
  api_type: "anthropic"
  api_key: "sk-ant-..."
  base_url: "https://api.anthropic.com"
  model: "claude-haiku-4-5-20251001"
  max_token: 1024

If you'd rather not write a global config, build a Config programmatically — see example.py.

Usage — EngramMemory (passive transcript mirror)

from metagpt.roles import Role
from engram_metagpt import EngramMemory

role = Role(name="Alice", profile="Analyst")
role.rc.memory = EngramMemory(bucket="my-team-transcript")

Now every Message the role observes is mirrored to the my-team-transcript bucket. MetaGPT's local Memory semantics (the index, find_news, get_by_actions) all keep working unchanged — Engram is a write-through mirror, not a replacement for the in-process buffer.

try_remember(keyword) falls back to Engram's hybrid retrieval if the local buffer has no hit, so the role can recall facts learned in an earlier process run.

Usage — Engram Actions (deliberate memory)

from engram_metagpt import engram_actions

role = Role(name="Researcher", profile="Analyst")
role.set_actions(engram_actions(bucket="my-team-facts"))

The role now has two actions available:

• EngramStoreMemory — await action.run(content) → saves one atomic fact, returns "stored memory_id=...".
• EngramQueryMemory — await action.run(query) → returns the synthesized answer string from Engram's hybrid retrieval (BM25 + vector + knowledge graph fusion).

Combine them with other actions and MetaGPT's react_mode="react" to let the agent decide when to remember and recall on its own.

Why this beats MetaGPT's built-in memory

• Persists across runs. MetaGPT's Memory is per-process; the next Team.run() starts blank. Engram doesn't.
• Shared across roles. Engram is the team's institutional memory, not a per-role scratchpad.
• Hybrid retrieval — BM25 + vector + knowledge graph fusion, not vector-only.
• Bring-your-own-LLM for extraction and synthesis (https://lumetra.io/models).
• Per-team buckets — pass bucket=f"team-{project_id}" and isolation is automatic.

Verified

Smoke-tested against live api.lumetra.io with the Anthropic-backed MetaGPT provider (claude-haiku-4-5-20251001). The flow in example.py:

1. Build a Role with a custom SummarizeUserFact action.
2. Swap EngramMemory(bucket=transcript_bucket) into role.rc.memory.
3. Mirror a user message + an LLM-generated summary through Engram.
4. Invoke EngramStoreMemory twice (two atomic facts).
5. Invoke EngramQueryMemory against the facts bucket.

Cross-checked with curl — both facts landed in the bucket as expected, and the mirrored transcript bucket extracted the user/assistant content into atomic memories.

License

MIT — Lumetra