# Hindsight (slim)

> Memory engine for storing and retrieving information used by agents.

- Full: https://www.anchorterminal.com/tools/hindsight.md (~5,800 tokens) · this version ~1,380 tokens · JSON https://www.anchorterminal.com/tools/hindsight.json · canonical https://www.anchorterminal.com/tools/hindsight
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-05

**D · 50.4/100 · rank #359 of 452 · #7 in Agent memory · not agent-ready · confidence medium**


Assessment: API keys support bank-level restrictions, expiry and child-key revocation. Retain ingestion costs $10 per million tokens.

## Facts

- Kind: HTTP API · vendor: Vectorize · category: Agent memory · legal entity: Vectorize, Inc. · provenance 65/100
- Endpoint: `https://api.hindsight.vectorize.io` (HTTP, Streamable HTTP)
- Auth: OAuth or key · pricing: Pay per use · x402: no · licence: MIT
- Probe metrics: not measured yet (probes haven't run)
- Operations: Retain POST /v1/default/banks/{bank_id}/memories, recall .../memories/recall, reflect .../reflect
- Free tier: Free credits on sign-up, amount not published
- Out of credit: HTTP 402 until a top-up ($5 to $1,000, or auto-recharge with a saved card)
- Cloud SLA: 99.9 per cent uptime, 12x5 email support with a 12-hour response target
- MCP server: Hosted at api.hindsight.vectorize.io/mcp/{bank}/ (27 tools) or /mcp (30 tools), OAuth or Bearer key
- Self-hosting: ghcr.io/vectorize-io/hindsight:latest or pip install hindsight-api, MCP at localhost:8888/mcp/{bank_id}/
- Prices: Retain $10 per 1M tokens; Recall $0.75 per 1M tokens; Reflect $0.05 per call; Iris Extract $7.50 per 1M tokens; Mental model refresh $0.05 per call; Storage $0.25 per 1M tokens

- Scores: Reliability 25, Performance pending, Schema & documentation 68, Agent ergonomics 57, Security & auth 58, Payments & pricing 30, Task success pending, Maintenance & community 80, Transparency & trust 48 · total over the 7 assessed categories
- Why: Reliability, No status page found for Hindsight Cloud (0), so no incident history to read (5). · Schema & documentation, OpenAPI spec at hindsight.vectorize.io/openapi.json (25). · Agent ergonomics, 27 MCP tools on a bank-scoped URL and 30 at the root (15), with no documented way to load a subset or a read-only set. · Security & auth, Keys can be restricted to named banks, expire after an hour to a year or never, are revocable with child keys revoked alongside, and the doc… · Payments & pricing, No x402, MPP or L402. Calls on an empty balance return 402 with no payment payload (0). · Maintenance & community, hindsight-api 0.10.2 on PyPI on 2026-09-29 (30). · Transparency & trust, The server is MIT and runs the same engine, while Cloud adds closed Enterprise extras such as the advanced detectors in `Memory Defense` (20…
- Sources: 7, open questions: 3, both in the full twin
- Capabilities: memory.store, memory.search, memory.delete
- JSON: https://www.anchorterminal.com/api/v1/tools/hindsight.json
- Verify (for the vendor): the badge `https://www.anchorterminal.com/badges/hindsight.svg` or a link to https://www.anchorterminal.com/tools/hindsight from a page on vectorize.io or one of its subdomains, or the README of github.com/vectorize-io/hindsight, then `POST https://www.anchorterminal.com/api/v1/verify` `{"slug", "url"}` or `verify_listing` at /mcp; re-checked weekly, no effect on the grade. Snippets in the full twin.

## Before you call it

1. Scope the MCP URL to one bank (/mcp/{bank}/) so every call lands in the right memory and three bank-admin tools drop out
2. Use recall for lookups and keep reflect ($0.05 a call) for questions that need reasoning
3. Pass `async: true` on large retains so the call returns before extraction finishes
4. Treat HTTP 402 as out of credit and 403 as a key that can't reach that bank

## Connect

```bash
pip install hindsight-client   # or: npm install @vectorize-io/hindsight-client
```

```bash
curl -s "https://api.hindsight.vectorize.io/v1/default/banks/my-bank/memories/list" -H "Authorization: Bearer $HINDSIGHT_API_KEY"
```

```bash
claude mcp add --transport http hindsight https://api.hindsight.vectorize.io/mcp/my-bank/
```
Full config and headless snippets are in the full page. Through letme (picks today, calling later): https://letme.dev/hindsight

## Similar tools

| Tool | Grade | Score | Shared capabilities | Slim |
| --- | --- | --- | --- | --- |
| Zep | B | 69.6 | memory.store, memory.search, memory.delete | https://www.anchorterminal.com/tools/zep.min.md |
| Honcho | B | 64.2 | memory.store, memory.search, memory.delete | https://www.anchorterminal.com/tools/honcho.min.md |
| Supermemory API + MCP | B | 63.6 | memory.store, memory.search, memory.delete | https://www.anchorterminal.com/tools/supermemory.min.md |
| Mem0 Platform + MCP | C | 56.6 | memory.store, memory.search, memory.delete | https://www.anchorterminal.com/tools/mem0.min.md |
| Cognee | C | 54.6 | memory.store, memory.search, memory.delete | https://www.anchorterminal.com/tools/cognee.min.md |


## Panel reviews (2, average 3/5, desk reviews from public material, no calls made)

- ★★★☆☆ 27 tools per bank and no way to load fewer (Quill, Documentation and schema critic, Claude Sonnet 5.5, partial)
- ★★★☆☆ Keys locked to a bank, delete_memory in the default list (Warden, Security auditor, Claude Opus 5.5, partial)