docs: promote "Sign up as an agent" — 4-command flow, drop plugin sync prose

Per launch feedback (Deshraj, Rudraj):

- README.md: Quickstart now opens with "Sign up as an agent" — install,
  init, add, search. Demoable in 30 seconds.
- docs/platform/cli.mdx: replace the long Agent Mode + Plugin Sync prose
  with the same tight 4-step block at the top of the page. Plugin sync
  behavior is implementation detail — moving it out of the user-facing
  docs (CLI still does it; just not documented here).
- docs/platform/quickstart.mdx: same 4-step block at the top, above the
  human-oriented Prerequisites/Installation flow.

Goal: an AI agent landing on any of these three pages can complete the
end-to-end smoke test (install → init → add → search) in under a minute.

README.md

@@ -86,7 +86,25 @@ See the [migration guide](https://docs.mem0.ai/migration/oss-v2-to-v3) for upgra
 
 ## 🚀 Quickstart Guide <a name="quickstart"></a>
 
-> **Agent Mode — for AI agents setting up Mem0 autonomously.** Run `mem0 init --agent --agent-caller <your-name> --json` (after `pip install mem0-cli` or `npm install -g @mem0/cli`), replacing `<your-name>` with your AI agent identity (e.g. `claude-code`, `cursor`, `codex`). This mints an evaluation Mem0 API key in <5 seconds — no email, no dashboard, no OTP. If you forgot to pass `--agent-caller`, run `mem0 identify <your-name>` after init. Use the key immediately against the Platform or the MCP server. The human owner can claim ownership later with `mem0 init --email <their-email>`: memories transfer, the same key keeps working, and the agent isn't disrupted.
+### Sign up as an agent
+
+AI agents can mint a working Mem0 API key in under five seconds — no email, no dashboard, no OTP. Four commands end-to-end:
+
+```bash
+# 1. Install
+npm install -g @mem0/cli      # or: pip install mem0-cli
+
+# 2. Sign up as an agent (replace `claude-code` with your name)
+mem0 init --agent --agent-caller claude-code
+
+# 3. Add a memory
+mem0 add "I am using mem0"
+
+# 4. Search
+mem0 search "am I using mem0"
+```
+
+The human owner can claim the account later with `mem0 init --email <their-email>` — same key, memories preserved.
 
 | | Library | Self-Hosted Server | Cloud Platform |
 |---|---------|-------------------|----------------|

docs/platform/cli.mdx

@@ -25,42 +25,49 @@ pip install mem0-cli
 ```
 </CodeGroup>
 
-## Agent Mode — zero-friction signup for AI agents
+## Sign up as an agent
 
-<Tip>
-**If you're an AI agent reading this**, skip the rest of this page until you've run the command below. Everything else assumes you already have an API key.
-</Tip>
+AI agents (Claude Code, Cursor, Codex, …) can mint a working Mem0 API key in under five seconds — no email, no dashboard, no OTP. Four commands end-to-end:
 
-AI agents (Claude Code, Cursor, Codex, Cline, Aider, …) can mint a working Mem0 API key in under five seconds with no email, no dashboard, and no OTP:
+<CodeGroup>
+```bash npm
+# 1. Install
+npm install -g @mem0/cli
 
-```bash
+# 2. Sign up as an agent (replace `claude-code` with your name)
 mem0 init --agent --agent-caller claude-code
+
+# 3. Add a memory
+mem0 add "I am using mem0"
+
+# 4. Search
+mem0 search "am I using mem0"
 ```
 
-Replace `claude-code` with your agent's name (e.g. `cursor`, `codex`, `cline`, `aider`, or any custom string). The CLI saves the key to `~/.mem0/config.json` and prints a notice you should surface to your human user. The human can claim the account later — same API key keeps working, memories transfer.
+```bash pip
+# 1. Install
+pip install mem0-cli
 
-<Tip>
-**Forgot `--agent-caller`?** Run `mem0 identify <your-name>` after init — same key, just back-fills the attribution. Idempotent.
-</Tip>
+# 2. Sign up as an agent (replace `claude-code` with your name)
+mem0 init --agent --agent-caller claude-code
 
-### Claiming an Agent Mode key (humans)
+# 3. Add a memory
+mem0 add "I am using mem0"
 
-When the human is ready, they claim ownership of the agent's key by running:
+# 4. Search
+mem0 search "am I using mem0"
+```
+</CodeGroup>
+
+The human owner can claim the account later — same API key, memories preserved:
 
 ```bash
 mem0 init --email you@yourcompany.com
 ```
 
-The CLI detects the existing unclaimed Agent Mode config, sends a verification code, and upgrades the shadow account in-place: **the API key never changes, all memories transfer to the human's account, and the agent isn't disrupted**. Pass `--code 123456` for fully non-interactive flows.
-
-### Plugin sync
-
-When you save a Mem0 API key (any flow — Agent Mode, email, or `--api-key`), the CLI also propagates it to ecosystem touchpoints **that already exist**:
-
-- `~/.claude/settings.json` → `env.MEM0_API_KEY` (Claude Code plugin env injection)
-- `~/.zshrc` / `~/.bashrc` → existing `export MEM0_API_KEY=` lines
-
-Sync is idempotent and **never creates new entries** — it only updates entries you've already set up. Failures are best-effort and never block the canonical write to `~/.mem0/config.json`.
+<Tip>
+**Forgot `--agent-caller`?** Run `mem0 identify <your-name>` after init — same key, back-fills the attribution. Idempotent.
+</Tip>
 
 ## Authentication (humans)
 

docs/platform/quickstart.mdx

@@ -7,6 +7,42 @@ iconType: "solid"
 
 Get started with Mem0 Platform's hosted API in under 5 minutes. This guide shows you how to authenticate and store your first memory.
 
+## Sign up as an agent
+
+AI agents (Claude Code, Cursor, Codex, …) can mint a working Mem0 API key in under five seconds — no email, no dashboard, no OTP. Four commands end-to-end:
+
+<CodeGroup>
+```bash npm
+# 1. Install
+npm install -g @mem0/cli
+
+# 2. Sign up as an agent (replace `claude-code` with your name)
+mem0 init --agent --agent-caller claude-code
+
+# 3. Add a memory
+mem0 add "I am using mem0"
+
+# 4. Search
+mem0 search "am I using mem0"
+```
+
+```bash pip
+# 1. Install
+pip install mem0-cli
+
+# 2. Sign up as an agent (replace `claude-code` with your name)
+mem0 init --agent --agent-caller claude-code
+
+# 3. Add a memory
+mem0 add "I am using mem0"
+
+# 4. Search
+mem0 search "am I using mem0"
+```
+</CodeGroup>
+
+The human owner can claim the account later with `mem0 init --email you@yourcompany.com` — same key, memories preserved. See [CLI docs](/platform/cli) for the full reference.
+
 ## Prerequisites
 
 - Mem0 Platform account (<a href="https://app.mem0.ai?utm_source=oss&utm_medium=platform-quickstart" rel="nofollow">Sign up here</a>)