hermes-agent/plugins/memory/hindsight

Hindsight Memory Provider

Long-term memory with knowledge graph, entity resolution, and multi-strategy retrieval. Supports cloud, local embedded, and local external modes.

Requirements

• Cloud: API key from ui.hindsight.vectorize.io
• Local Embedded: API key for a supported LLM provider (OpenAI, Anthropic, Gemini, Groq, OpenRouter, MiniMax, Ollama, or any OpenAI-compatible endpoint). Embeddings and reranking run locally — no additional API keys needed.
• Local External: A running Hindsight instance (Docker or self-hosted) reachable over HTTP.

Setup

hermes memory setup    # select "hindsight"

The setup wizard will install dependencies automatically via uv and walk you through configuration.

Or manually (cloud mode with defaults):

hermes config set memory.provider hindsight
echo "HINDSIGHT_API_KEY=your-key" >> ~/.hermes/.env

Cloud

Connects to the Hindsight Cloud API. Requires an API key from ui.hindsight.vectorize.io.

Local Embedded

Hermes spins up a local Hindsight daemon with built-in PostgreSQL. Requires an LLM API key for memory extraction and synthesis. The daemon starts automatically in the background on first use and stops after 5 minutes of inactivity.

Supports any OpenAI-compatible LLM endpoint (llama.cpp, vLLM, LM Studio, etc.) — pick openai_compatible as the provider and enter the base URL.

Daemon startup logs: ~/.hermes/logs/hindsight-embed.log Daemon runtime logs: ~/.hindsight/profiles/<profile>.log

To open the Hindsight web UI (local embedded mode only):

hindsight-embed -p hermes ui start

Local External

Points the plugin at an existing Hindsight instance you're already running (Docker, self-hosted, etc.). No daemon management — just a URL and an optional API key.

Config

Config file: ~/.hermes/hindsight/config.json

Connection

Key	Default	Description
mode	cloud	cloud, local_embedded, or local_external
api_url	https://api.hindsight.vectorize.io	API URL (cloud and local_external modes)

Memory Bank

Key	Default	Description
bank_id	hermes	Memory bank name (static fallback used when bank_id_template is unset or resolves empty)
bank_id_template	—	Optional template to derive the bank name dynamically. Placeholders: {profile}, {workspace}, {platform}, {user}, {session}. Example: hermes-{profile} isolates memory per active Hermes profile. Empty placeholders collapse cleanly (e.g. hermes-{user} with no user becomes hermes).
bank_mission	—	Reflect mission (identity/framing for reflect reasoning). Applied via Banks API.
bank_retain_mission	—	Retain mission (steers what gets extracted). Applied via Banks API.

Recall

Key	Default	Description
recall_budget	mid	Recall thoroughness: low / mid / high
recall_prefetch_method	recall	Auto-recall method: recall (raw facts) or reflect (LLM synthesis)
recall_max_tokens	4096	Maximum tokens for recall results
recall_max_input_chars	800	Maximum input query length for auto-recall
recall_prompt_preamble	—	Custom preamble for recalled memories in context
recall_tags	—	Tags to filter when searching memories
recall_tags_match	any	Tag matching mode: any / all / any_strict / all_strict
auto_recall	true	Automatically recall memories before each turn

Retain

Key	Default	Description
auto_retain	true	Automatically retain conversation turns
retain_async	true	Process retain asynchronously on the Hindsight server
retain_every_n_turns	1	Retain every N turns (1 = every turn)
retain_context	conversation between Hermes Agent and the User	Context label for retained memories
retain_tags	—	Default tags applied to retained memories; merged with per-call tool tags
retain_source	—	Optional metadata.source attached to retained memories
retain_user_prefix	User	Label used before user turns in auto-retained transcripts
retain_assistant_prefix	Assistant	Label used before assistant turns in auto-retained transcripts

Integration

Key	Default	Description
memory_mode	hybrid	How memories are integrated into the agent

memory_mode:

• hybrid — automatic context injection + tools available to the LLM
• context — automatic injection only, no tools exposed
• tools — tools only, no automatic injection

Local Embedded LLM

Key	Default	Description
llm_provider	openai	openai, anthropic, gemini, groq, openrouter, minimax, ollama, lmstudio, openai_compatible
llm_model	per-provider	Model name (e.g. gpt-4o-mini, qwen/qwen3.5-9b)
llm_base_url	—	Endpoint URL for openai_compatible (e.g. http://192.168.1.10:8080/v1)

The LLM API key is stored in ~/.hermes/.env as HINDSIGHT_LLM_API_KEY.

Tools

Available in hybrid and tools memory modes:

Tool	Description
hindsight_retain	Store information with auto entity extraction; supports optional per-call tags
hindsight_recall	Multi-strategy search (semantic + entity graph)
hindsight_reflect	Cross-memory synthesis (LLM-powered)

Environment Variables

Variable	Description
HINDSIGHT_API_KEY	API key for Hindsight Cloud
HINDSIGHT_LLM_API_KEY	LLM API key for local mode
HINDSIGHT_API_LLM_BASE_URL	LLM Base URL for local mode (e.g. OpenRouter)
HINDSIGHT_API_URL	Override API endpoint
HINDSIGHT_BANK_ID	Override bank name
HINDSIGHT_BUDGET	Override recall budget
HINDSIGHT_MODE	Override mode (cloud, local_embedded, local_external)

Client Version

Requires hindsight-client >= 0.4.22. The plugin auto-upgrades on session start if an older version is detected.