Composio

Persistent memory for Composio agents via Hindsight. Exposes Hindsight's retain, recall, and reflect operations as Composio in-process custom tools your agent can call directly.

The Hindsight memory bank for each call is the Composio session's user_id, so a single registered tool set isolates memory per user automatically.

Features

• Composio Custom Tools — registered via composio.experimental.tool() and bound to a session
• Per-user memory — the session user_id maps to the Hindsight bank_id (with a configurable fallback bank)
• Three Memory Tools — Retain (store), Recall (search), Reflect (synthesize) — include any combination
• Simple Configuration — pass a client/URL directly, or configure() once globally

Installation

pip install hindsight-composio

Quick Start

Recommended: Hindsight Cloud

Sign up free and grab an API key — no self-hosting required.

from composio import Composio
from hindsight_composio import register_hindsight_tools

composio = Composio()  # uses COMPOSIO_API_KEY

tools = register_hindsight_tools(
    composio,
    hindsight_api_url="https://api.hindsight.vectorize.io",
    api_key="hsk_...",  # or set HINDSIGHT_API_KEY env var
)

session = composio.create(
    user_id="user-123",  # becomes the Hindsight bank_id
    experimental={"custom_tools": tools},
)

# Pass session.tools() to your agent/LLM as usual.

The session now has three tools the agent can call:

• HINDSIGHT_RETAIN — Store information to long-term memory
• HINDSIGHT_RECALL — Search long-term memory for relevant facts
• HINDSIGHT_REFLECT — Synthesize a reasoned answer from memories

Bank selection

The bank is resolved per call:

1. The session's user_id (recommended — one tool set, isolated per user).
2. default_bank (passed to register_hindsight_tools or configure) when a call has no user_id.

If neither is available, the tool raises an error.

tools = register_hindsight_tools(
    composio,
    hindsight_api_url="https://api.hindsight.vectorize.io",
    default_bank="shared",  # used only when a session has no user_id
)

Self-hosting (local development)

If you're running Hindsight locally with ./scripts/dev/start-api.sh, swap the URL:

tools = register_hindsight_tools(
    composio,
    hindsight_api_url="http://localhost:8888",
)

See the installation guide for self-hosting setup.

Selecting tools

Include only the tools you need:

tools = register_hindsight_tools(
    composio,
    hindsight_api_url="https://api.hindsight.vectorize.io",
    enable_retain=True,
    enable_recall=True,
    enable_reflect=False,  # omit reflect
)

Global configuration

Instead of passing connection details every time, configure once:

from hindsight_composio import configure, register_hindsight_tools

configure(
    hindsight_api_url="https://api.hindsight.vectorize.io",
    api_key="your-api-key",       # or set HINDSIGHT_API_KEY env var
    default_bank="shared",         # fallback bank when no user_id
    budget="mid",                  # recall/reflect budget: low/mid/high
    max_tokens=4096,               # max tokens for recall results
    tags=["env:prod"],             # tags for stored memories
    recall_tags=["scope:global"],  # tags to filter recall
    recall_tags_match="any",       # any/all/any_strict/all_strict
)

tools = register_hindsight_tools(composio)

Configuration Reference

register_hindsight_tools()

Parameter	Default	Description
composio	required	The Composio instance (provides the decorator)
client	None	Pre-configured Hindsight client
hindsight_api_url	None	API URL (used if no client provided)
api_key	None	API key (used if no client provided)
default_bank	None	Bank used when a call has no Composio user_id
budget	"mid"	Recall/reflect budget level (low/mid/high)
max_tokens	4096	Maximum tokens for recall results
tags	None	Tags applied when storing memories
recall_tags	None	Tags to filter when searching
recall_tags_match	"any"	Tag matching mode
enable_retain	True	Include the retain (store) tool
enable_recall	True	Include the recall (search) tool
enable_reflect	True	Include the reflect (synthesize) tool

configure()

Parameter	Default	Description
hindsight_api_url	Hindsight Cloud (https://api.hindsight.vectorize.io)	Hindsight API URL
api_key	HINDSIGHT_API_KEY env	API key for authentication
default_bank	None	Fallback bank when a session has no user_id
budget	"mid"	Default recall/reflect budget level
max_tokens	4096	Default max tokens for recall
tags	None	Default tags for retain operations
recall_tags	None	Default tags to filter recall
recall_tags_match	"any"	Default tag matching mode

Requirements

• Python >= 3.10
• composio >= 0.13.1, < 1
• hindsight-client >= 0.4.0
• A running Hindsight API server (or Hindsight Cloud)

note

Composio's custom-tools API is currently experimental. This integration targets the Composio 0.13.x SDK (from composio import Composio) and intentionally excludes the in-progress 1.0.0 rewrite, whose API differs.