Amazon Alexa

AutoMem’s Alexa integration is built into the MCP Bridge server (mcp-sse-server) as a dedicated /alexa endpoint. This enables voice-based memory storage and recall through any Alexa-enabled device.

Key features:

• Voice-first interface with natural language commands
• Automatic user/device context tagging for scoped recall
• Speech-optimized output (240 chars per item, max 3 items)
• Two-tier recall: user/device-scoped first, global fallback

---

Architecture

graph TB
    subgraph "Voice Interface"
        ALEXA["Amazon Alexa Device"]
        ASK["Alexa Skills Kit"]
    end

    subgraph "MCP Bridge Service"
        ENDPOINT["POST /alexa"]
        HANDLER["Intent Router"]
        TAGS["buildAlexaTags()"]
        FORMAT["formatRecallSpeech()"]
    end

    subgraph "AutoMem API"
        MEMORY["POST /memory"]
        RECALL["GET /recall"]
    end

    ALEXA --> ASK
    ASK -->|"HTTPS POST"| ENDPOINT
    ENDPOINT --> HANDLER
    HANDLER --> TAGS
    HANDLER --> FORMAT
    TAGS -->|"store_memory"| MEMORY
    FORMAT -->|"recall_memory"| RECALL

The Alexa endpoint is stateless — each request is independent. Authentication uses the AUTOMEM_API_TOKEN environment variable since Alexa cannot send custom HTTP headers.

---

Prerequisites

• Deployed MCP Bridge service (included in Railway one-click template)
• AutoMem API with AUTOMEM_API_TOKEN configured
• Amazon Developer account

---

Supported Intents

LaunchRequest

User says: “Alexa, open AutoMem”

Response: “AutoMem is ready. Say remember to store something, or recall to fetch it.”

---

RememberIntent

User says:

• “Alexa, tell AutoMem to remember [note]”
• “Alexa, ask AutoMem to store [note]”

Slot: note (AMAZON.SearchQuery) — the content to store

What happens:

1. Extracts the note slot value
2. Automatically adds context tags: alexa, user:<userId>, device:<deviceId>
3. Calls store_memory with the content and tags
4. Returns speech confirmation

Responses:

• Success: “Saved to memory.”
• Missing note: “I did not hear anything to remember.”
• API error: “I could not save that right now.”

---

RecallIntent

User says:

• “Alexa, ask AutoMem what I said about [query]”
• “Alexa, tell AutoMem to recall [query]”

Slot: query (AMAZON.SearchQuery) — the search query

Recall strategy (two-tier):

1. Primary search: Query with user/device tags (scoped to this user/device)
2. Fallback search: Query without tags (global) if primary returns no results

Result formatting:

• Maximum 3 items returned
• Each item truncated to 240 characters
• Format: “Item 1: [content]. Item 2: [content]. Item 3: [content].”

Responses:

• Success: Formatted memory content
• No results: “I could not find anything in memory for that.”
• Missing query: “What should I recall?”
• API error: “I could not recall anything right now.”

---

AMAZON.HelpIntent

User says: “Alexa, help”

Response: “Say remember and a note to store it. Say recall and a topic to fetch it.”

---

Automatic Context Tagging

Every memory stored through Alexa receives contextual tags automatically:

Tag Pattern	Example	Purpose
alexa	alexa	Identify voice-originated memories
user:<id>	user:amzn1.ask.account.ABC123	User-specific filtering
device:<id>	device:amzn1.ask.device.XYZ789	Device-specific filtering

Why this matters: The user:<id> tag enables different family members’ memories to remain separate even when using the same device. The primary recall scope uses both user and device tags, falling back to just the user tag if no device-specific results are found.

---

Alexa Skill Setup

Step 1: Create Custom Skill

1. Go to Alexa Developer Console
2. Click Create Skill
3. Configure:
   • Skill name: AutoMem
   • Primary locale: English (US)
   • Skill type: Custom
   • Hosting: Alexa-hosted or provision your own

Step 2: Define Interaction Model

Invocation Name: automem (or your preferred wake phrase)

Intents:

Intent Name	Sample Utterances	Slots
RememberIntent	remember {note}, store {note}, save {note}	note (AMAZON.SearchQuery)
RecallIntent	recall {query}, what did I say about {query}, fetch {query}	query (AMAZON.SearchQuery)
AMAZON.HelpIntent	(built-in)	(none)

Use AMAZON.SearchQuery for both note and query slots to accept arbitrary natural language input.

Step 3: Configure Endpoint

1. In Alexa Developer Console → Endpoint
2. Select HTTPS
3. Set Default Region to your MCP Bridge URL:

   https://your-mcp-bridge.up.railway.app/alexa

4. SSL Certificate: Select “My development endpoint is a sub-domain of a domain that has a wildcard certificate from a certificate authority”

Step 4: Test the Skill

Use the Test tab in Alexa Developer Console:

User Says	Expected Response
”Open AutoMem"	"AutoMem is ready. Say remember to store something, or recall to fetch it."
"Tell AutoMem to remember buy milk tomorrow"	"Saved to memory."
"Ask AutoMem what I said about milk"	"Item 1: Buy milk tomorrow."
"Help"	"Say remember and a note to store it. Say recall and a topic to fetch it.”

---

Example Interactions

Basic storage and recall:

User: "Alexa, tell AutoMem to remember my favorite color is blue"
Alexa: "Saved to memory."

User: "Alexa, ask AutoMem what's my favorite color"
Alexa: "Item 1: My favorite color is blue."

Multi-item recall:

User: "Alexa, open AutoMem"
Alexa: "AutoMem is ready. Say remember to store something, or recall to fetch it."

User: "Remember I prefer dark mode in all applications"
Alexa: "Saved to memory."

User: "Remember I use Python 3.11 for all projects"
Alexa: "Saved to memory."

User: "Ask AutoMem what are my preferences"
Alexa: "Item 1: I prefer dark mode in all applications. Item 2: I use Python 3.11 for all projects."

Cross-device recall (using user-scoped fallback):

# Stored on Kitchen Echo:
User: "Tell AutoMem to remember buy milk"
Alexa: "Saved to memory."
# Tagged: alexa, user:abc123, device:kitchen-echo

# Recalled on Bedroom Echo:
User: "Ask AutoMem what should I buy"
Alexa: "Item 1: Buy milk."
# Primary search (device:bedroom-echo) finds nothing
# Fallback search (user:abc123) finds the memory

---

Configuration

Environment Variables

Variable	Required	Default	Description
AUTOMEM_API_URL	Yes	http://127.0.0.1:8001	AutoMem API base URL
AUTOMEM_API_TOKEN	Yes	(none)	Bearer token for API authentication
PORT	No	8080	Server listen port

AUTOMEM_ENDPOINT is supported as a legacy alias for AUTOMEM_API_URL.

Authentication token extraction order:

1. Authorization: Bearer <token> header
2. X-API-Key: <token> header
3. ?api_key=<token> query parameter
4. AUTOMEM_API_TOKEN environment variable (fallback — used by Alexa since it cannot send headers)

---

Cross-Client Access

Memories stored via Alexa are accessible from any AutoMem-connected client:

1. User stores via Alexa: “Remember project uses Python 3.11”
2. Developer recalls in Cursor: search for “python version” returns the Alexa memory
3. Memory includes context: tagged with alexa, user:<id>, timestamp

---

Security Considerations

Token management:

• Store AUTOMEM_API_TOKEN in Railway/cloud environment variables
• Never hardcode tokens in Alexa skill configuration
• Alexa cannot send custom headers — token must be in environment variable

User privacy:

• User and device IDs are stored as tags (opaque identifiers from Amazon)
• Memory content is not filtered or sanitized
• No automatic data expiration — implement deletion if required
• No user-level authentication — all users share the same API token

Access control options:

• Per-user instances: Deploy separate AutoMem instances per user, each with a unique token
• Tag-based isolation: Use single instance; filter all operations by user tags

Alexa compliance:

• Follow Alexa Skills Kit Policy
• Obtain user consent for data storage
• Provide data deletion mechanisms (use the AutoMem API directly)

---

Limitations

Limitation	Impact	Workaround
No memory deletion via voice	Cannot remove memories	Use AutoMem API directly
No metadata updates via voice	Cannot change importance/tags	Use API directly
No relationship creation via voice	Cannot link memories	Use API directly
240 char speech limit	Long memories truncated	Store summaries; use API for detail
No user authentication	All users share token	Deploy per-user instances

---

Troubleshooting

”I could not save that right now”

Cause	Solution
Invalid AUTOMEM_API_TOKEN	Verify token matches memory-service config
Memory service unreachable	Check AUTOMEM_API_URL points to correct endpoint
Network timeout	Increase Alexa skill timeout setting

Debug: curl -H "Authorization: Bearer $TOKEN" https://your-automem.up.railway.app/health

”I could not recall anything right now”

Cause	Solution
No matching memories	Verify memories exist; check tags
Tag filtering too strict	Check user/device tags on stored memories
API timeout	Optimize memory count or increase skill timeout

Slot values not extracted (“I did not hear anything to remember”)

Cause	Solution
Utterance mismatch	Add more sample utterances to skill model
Slot type issues	Use AMAZON.SearchQuery for both slots
Alexa speech recognition	Speak clearly; test in developer console

Verification: Enable skill test logging in Alexa Developer Console to see the raw request JSON and check slot values.