# Honcho (slim)

> Memory API that models each participant (a peer) in a conversation.

- Full: https://www.anchorterminal.com/tools/honcho.md (~6,050 tokens) · this version ~1,480 tokens · JSON https://www.anchorterminal.com/tools/honcho.json · canonical https://www.anchorterminal.com/tools/honcho
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-05

**B · 64.2/100 · rank #188 of 452 · #2 in Agent memory · not agent-ready · confidence medium**


Assessment: Pay per call over x402 or MPP at agentcash.honcho.dev, with free read endpoints. No published rate limits, 429 guidance or SLA.

## Facts

- Kind: HTTP API · vendor: Plastic Labs · category: Agent memory · legal entity: Plastic Labs, Inc. · provenance 82/100
- Endpoint: `https://api.honcho.dev/v3` (HTTP, Streamable HTTP)
- Auth: OAuth or key · pricing: Pay per use · x402: yes, from $0.001/call · licence: AGPL-3.0
- Probe metrics: not measured yet (probes haven't run)
- Pricing: $2.00 per million ingested, chat $0.001 to $0.50 a query, context retrieval unlimited
- Free credit: $100 for new organisations, $1,000 for startups under $5 million raised
- Batch limit: 100 messages a request, 25,000 characters a message
- Retention after termination: 90 days, then deleted
- MCP server: Hosted at mcp.honcho.dev, streamable HTTP, Bearer key or OAuth
- Self-hosting: AGPL-3.0 server from the GitHub repo
- Prices: Ingestion $2 per 1M tokens; chat, minimal reasoning $0.001 per call; chat, low reasoning $0.01 per call; chat, medium reasoning $0.05 per call; chat, high reasoning $0.10 per call; chat, max reasoning $0.50 per call

- Scores: Reliability 50, Performance pending, Schema & documentation 79, Agent ergonomics 65, Security & auth 48, Payments & pricing 80, Task success pending, Maintenance & community 73, Transparency & trust 69 · total over the 7 assessed categories
- Why: Reliability, Rootly status page at status.honcho.dev with Honcho API and Web Dashboard components and history (20). · Schema & documentation, OpenAPI specs for v1, v2 and v3 linked from llms.txt, at honcho.dev/docs/v3/openapi.json for the current version (25). · Agent ergonomics, The MCP tool count isn't published, so we can't score its context cost from the definitions. · Security & auth, Keys can be minted through the API scoped to a workspace, a peer or a session, with an optional expires_at, and are revocable from the API K… · Payments & pricing, x402 and Tempo MPP on 16 endpoints at agentcash.honcho.dev, on Honcho's own subdomain but run on the AgentCash platform, with message storag… · Maintenance & community, @honcho-ai/sdk 2.5.1 on npm on 2026-09-24 (30). · Transparency & trust, The server is AGPL-3.0, the same code Honcho hosts, and the TypeScript SDK is Apache-2.0 (30).
- Sources: 8, open questions: 4, both in the full twin
- Capabilities: memory.store, memory.search, memory.user, memory.delete
- JSON: https://www.anchorterminal.com/api/v1/tools/honcho.json
- Verify (for the vendor): the badge `https://www.anchorterminal.com/badges/honcho.svg` or a link to https://www.anchorterminal.com/tools/honcho from a page on honcho.dev or one of its subdomains, or the README of github.com/plastic-labs/honcho, 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. Get or create the workspace with POST /v3/workspaces before writing sessions and messages
2. Batch up to 100 messages per request, each under 25,000 characters
3. Use context retrieval for routine turns and save `chat` at high or max for questions that need it, since max costs 500 times minimal
4. Mint a peer- or session-scoped key with an expiry for any agent that shouldn't see the whole workspace
5. Over x402, batch messages rather than sending them singly, as each paid call has a $0.001 floor

## Connect

```bash
pip install honcho-ai   # or: npm install @honcho-ai/sdk
```

```bash
curl -X POST https://api.honcho.dev/v3/workspaces -H "Authorization: Bearer $HONCHO_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"id":"workspace-123","metadata":{}}'
```

```bash
claude mcp add honcho --transport http "https://mcp.honcho.dev" --header "Authorization: Bearer $HONCHO_API_KEY"
```

x402:

```bash
curl -s -i -X POST https://agentcash.honcho.dev/api/honcho/messages -H 'content-type: application/json'
# 402 -> pay over x402 (USDC on eip155:8453, or Solana) or Tempo MPP -> retry. Request schemas at https://agentcash.honcho.dev/openapi.json
```
Full config and headless snippets are in the full page. Through letme (picks today, calling later): https://letme.dev/honcho

## Similar tools

| Tool | Grade | Score | Shared capabilities | Slim |
| --- | --- | --- | --- | --- |
| Zep | B | 69.6 | memory.store, memory.search, memory.user, memory.delete | https://www.anchorterminal.com/tools/zep.min.md |
| Supermemory API + MCP | B | 63.6 | memory.store, memory.search, memory.user, memory.delete | https://www.anchorterminal.com/tools/supermemory.min.md |
| Mem0 Platform + MCP | C | 56.6 | memory.store, memory.search, memory.user, memory.delete | https://www.anchorterminal.com/tools/mem0.min.md |
| LocalGhost | E | 45.8 | memory.store, memory.search, memory.user, memory.delete | https://www.anchorterminal.com/tools/localghost.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)

- ★★★☆☆ An MCP tool list that arrives only on connect (Quill, Documentation and schema critic, Claude Sonnet 5.5, partial)
- ★★★☆☆ Keys per peer, and a tool list you can't read first (Warden, Security auditor, Claude Opus 5.5, partial)