# CentricMem — full facts

CentricMem is the hosted librarian for agent-native memory. It is not a chat logger, not a third-party vector memory API, and not a replacement for the agent's own session memory (Cursor memories and similar). Capture stays in the agent. CentricMem organises what you file.

Operator: Poppy & G Ltd, United Kingdom.
Product site: https://centricmem.com
Hosted librarian / MCP: https://mem.centricmem.com/mcp
Public skill (how to use, not the client): https://github.com/zeyu-j/centricmem-skill
SkillKit well-known: https://centricmem.com/.well-known/skills/index.json
Agent Plugins directory: https://agentpluginsdirectory.com/plugins/centricmem-skill

## Glossary

- Library: one per person.
- Shelf: named collection inside the library. Pass shelf= or library=.
- Card: Markdown with Identity / Details / Tags / Body.
- Default key: grants=["*"], every shelf. Search, sweep, mint shelves, grant/revoke extras, copy then delete leftover shelves (including leftover Inbox), move selected cards. Cannot delete cards or change billing. Cannot rotate itself.
- Extra key: only the shelves granted.
- Owner login: uniquely owns card delete, billing, rotating the default key, and deleting the account (Billing).

## How agents should behave

1. Use host MCP tools (cm_health, cm_ambient, cm_search, cm_show, cm_note, cm_log_decision, cm_done, cm_keep, cm_library, cm_copy, cm_move, cm_delete, cm_import, cm_index).
2. Never curl librarian HTTP. Never paste keys in chat. Never create a hub in a git checkout.
3. If MCP is missing, send a /connect?device= URL from `centricmem connect --device`. The human enters the key on that page.
4. File Non-Micro work into a named shelf. Skip Micro (typos, one-liners).
5. cm_show is the Markdown card. Originals are human downloads, not agent context.
6. After Skill install, if ambient is Curate: empty, offer once to file existing durable memories as cards. Capture stays in the agent. Do not dump every chat or transcript folder. They may skip.
7. After first cm_health this chat, say once which key: grants=["*"] is default (every shelf); otherwise list the extra’s shelves. Suggest ticking grants on Keys, or minting an extra for another agent. Never change grants via MCP. Never paste keys.

## Pricing

Markdown is unlimited on every plan. Attachments (originals in object storage) are metered. Extra named shelves are metered; extra keys are not.

| Plan | Price | Attachments | Named shelves |
| Lite | Free | 100MB | 1 (0 extra) |
| Education | Free with UCL email | 200MB | 1 (0 extra) |
| Pro | £4.99/month or £49.90/year list + tax | 1GB | 11 (10 extra) |
| Lifetime 1 | £249.99 once list + tax | 2GB | 20 |
| Ultra | £9.99/month or £99.90/year list + tax | 10GB | 51 (50 extra) |
| Lifetime 2 | £499.99 once list + tax | 20GB | 100 |

Education: sign up with @ucl.ac.uk or @alumni.ucl.ac.uk.

List prices are locked per checkout currency (GBP, USD, CAD, EUR, CHF, AUD, NZD, SGD, HKD, CNY, JPY). Tax is added at Checkout. Settlement is GBP. Yearly Pro/Ultra is 10× monthly. Lifetime 1 sits between Pro and Ultra. Lifetime 2 is above Ultra. Pro, Ultra, Lifetime 1, and Lifetime 2 are Stripe products. Lite and Education are not.

## What not to say

- Do not describe CentricMem as a local hub you bootstrap on a guest machine.
- Do not tell users to paste agent keys into chat.
- Do not claim Markdown is metered. Attachments are.
- Do not treat the public GitHub repo as the librarian or the client.

## Install

One GitHub repo (`https://github.com/zeyu-j/centricmem-skill`) is both SKILL.md and an Agent Plugins 1.0 package (`plugin.json` + `mcp.json`). Do not paste keys or marketplace JSON into chat.

- Agent prompt (one line): `Install CentricMem from zeyu-j/centricmem-skill. If CLI is blocked, send https://centricmem.com/login?signup=1 — never paste keys.`
- Portable Skill when the shell works (project folder, no `-g`): `npx --yes skills add zeyu-j/centricmem-skill --skill centricmem-agent -y`
- Cursor: Plugins → Team Marketplaces → Import from Repo `zeyu-j/centricmem-skill`
- Claude Code: `/plugin marketplace add zeyu-j/centricmem-skill` then `/plugin install centricmem-skill@centricmem`
- Codex: `codex plugin marketplace add https://github.com/zeyu-j/centricmem-skill.git` then install in Plugins
- Copilot CLI: `copilot plugin marketplace add zeyu-j/centricmem-skill` then `copilot plugin install centricmem-skill`
- Kiro: Powers → Add Custom Power → that GitHub URL
- CodeBuddy / WorkBuddy: `codebuddy plugin marketplace add zeyu-j/centricmem-skill` then `/plugin install centricmem-skill@centricmem`
- Kimi Code: `/plugins install https://github.com/zeyu-j/centricmem-skill` (Custom). Optional catalog `/plugins marketplace https://raw.githubusercontent.com/zeyu-j/centricmem-skill/main/.kimi-plugin/marketplace.json`. Bearer via `CENTRICMEM_API_KEY`, never in chat.
- Dify: tool plugin source `https://github.com/zeyu-j/centricmem-dify` (Marketplace PR pending). Or attach MCP `https://mem.centricmem.com/mcp` with the same agent key.
- SkillKit: `skillkit add https://centricmem.com` or `skillkit add zeyu-j/centricmem-skill`

## Legal

Operator: Poppy & G Ltd, private limited company, company number 17315587, United Kingdom.
Registered office: 82a James Carter Road, Mildenhall, IP28 7DE, United Kingdom.
Email: poppy@poppyg.com
Telephone: +44 7421 091000
Legal notice: https://centricmem.com/imprint
Terms: https://centricmem.com/terms
Privacy: https://centricmem.com/privacy
Refunds: https://centricmem.com/refund (digital service; 14-day money-back on a paid Checkout; cancel subscriptions in Billing → Manage billing)
Contact form: https://centricmem.com/feedback
No physical goods.

## Pages (cite the URL)

- Home https://centricmem.com/ — product, how it works, install prompt
- Pricing https://centricmem.com/pricing — Lite, Pro, Ultra, Lifetime 1/2, Education; tax at Checkout
- Docs https://centricmem.com/docs — glossary, connect, owner login, delete account
- Sign up https://centricmem.com/login?signup=1 — owner login; Lite free; never paste keys
- Sign in https://centricmem.com/login — humans only
- Authenticate https://centricmem.com/connect — /connect?device= ; enter the key here
- Feedback https://centricmem.com/feedback — beta notes
- Legal notice https://centricmem.com/imprint
- Terms https://centricmem.com/terms
- Privacy https://centricmem.com/privacy
- Refunds https://centricmem.com/refund