Summary
This server wires Claude into UnCorreoTemporal's disposable email API, letting agents autonomously handle signup and verification flows. It exposes high-level tools like create_signup_inbox, wait_for_verification_email, and extract_otp_code, plus a complete_signup_flow orchestrator that handles the full create-wait-extract cycle. You can connect to a public endpoint with no local install, or run it via uvx with your own API key for production workloads. Designed for testing signup flows, scraping verified accounts, or any workflow where your agent needs to receive and parse verification emails without manual intervention. Supports stdio, SSE, and streamable-http transports.
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Tools
Public tool metadata for what this MCP can expose to an agent.
5 tools
create_signup_inboxCreates a labeled temporary inbox for a given service. Returns an email address and inbox_id ready to use.2 params
Creates a labeled temporary inbox for a given service. Returns an email address and inbox_id ready to use.
Parameters* required
ttl_minutesintegerInbox time-to-live in minutes (optional, uses plan default if omitted)
service_namestringName of the service where the agent will register (e.g. 'github', 'notion')
wait_for_verification_emailPolls the inbox until a verification email arrives or the timeout is reached. Returns the email content when found.5 params
Polls the inbox until a verification email arrives or the timeout is reached. Returns the email content when found.
Parameters* required
inbox_idstringThe inbox_id returned by create_signup_inbox
from_containsstringOptional filter: only match emails from addresses containing this string
timeout_secondsintegerMaximum seconds to wait for the email (default: 90)
subject_containsstringOptional filter: only match emails whose subject contains this string
poll_interval_secondsintegerPolling interval in seconds (default: 3)
get_latest_emailReads the latest email received in the inbox, including full body (text and HTML).2 params
Reads the latest email received in the inbox, including full body (text and HTML).
Parameters* required
inbox_idstringThe inbox_id to read from
mark_as_readbooleanWhether to mark the email as read (default: false)
extract_otp_codeExtracts an OTP code (4-8 digits) from an email message. Can receive the message text directly or look up a message by inbox_id + message_id.5 params
Extracts an OTP code (4-8 digits) from an email message. Can receive the message text directly or look up a message by inbox_id + message_id.
Parameters* required
inbox_idstringThe inbox_id (used together with message_id to look up the message)
message_idstringThe message_id to look up
message_textstringRaw message text to search for an OTP code
otp_length_maxintegerMaximum OTP length to match (default: 8)
otp_length_minintegerMinimum OTP length to match (default: 4)
extract_verification_linkExtracts a verification link from an email message. Supports filtering by preferred domains when the email contains multiple links.4 params
Extracts a verification link from an email message. Supports filtering by preferred domains when the email contains multiple links.
Parameters* required
inbox_idstringThe inbox_id (used together with message_id to look up the message)
message_idstringThe message_id to look up
message_textstringRaw message text to search for a verification link
preferred_domainsarrayList of preferred domains to prioritize when multiple links are found
uncorreotemporal-mcp
MCP server for UnCorreoTemporal, focused on autonomous signup and email verification workflows.
Architecture Demo
AI Agent
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| MCP
v
Temporary Email MCP Server
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v
UnCorreoTemporal API
Remote Connection (No Installation)
Connect directly to the public endpoint — no local install needed:
{
"mcpServers": {
"uncorreotemporal-mcp": {
"url": "https://uncorreotemporal.com/mcp"
}
}
}
The public endpoint is free to use for testing. For production workloads, set your own UCT_API_KEY via local install.
Installation
Claude Code
claude mcp add uncorreotemporal -e UCT_API_KEY=uct_your_key_here -- uvx uncorreotemporal-mcp
Claude Desktop (claude_desktop_config.json)
{
"mcpServers": {
"uncorreotemporal": {
"command": "uvx",
"args": ["uncorreotemporal-mcp"],
"env": {
"UCT_API_KEY": "uct_your_key_here"
}
}
}
}
Get your API key at uncorreotemporal.com.
Quickstart (30 seconds)
uvx uncorreotemporal-mcp
Or run local project version:
UCT_API_KEY=uct_your_key_here \
uv run uncorreotemporal-mcp
Minimal Workflow Example
inbox = await create_signup_inbox("github")
email = await wait_for_verification_email(inbox["inbox_id"])
link = await extract_verification_link(
inbox_id=inbox["inbox_id"],
message_id=email["message_id"],
)
Public Tools
create_signup_inboxwait_for_verification_emailget_latest_emailextract_otp_codeextract_verification_linkcomplete_signup_flow
New v1 tool: complete_signup_flow
Runs:
- create inbox
- wait verification email
- extract verification link + OTP
Input:
{
"service_name": "github",
"timeout_seconds": 90,
"poll_interval_seconds": 3,
"subject_contains": "verify",
"from_contains": "noreply",
"preferred_domains": ["github.com"],
"ttl_minutes": 30
}
Output:
{
"status": "success",
"inbox_id": "agent42@uncorreotemporal.com",
"email": "agent42@uncorreotemporal.com",
"verification_message": {
"message_id": "msg-1",
"subject": "Verify your email",
"from_address": "noreply@example.com",
"received_at": "2026-03-08T11:30:00Z"
},
"verification_link": "https://example.com/confirm?t=abc",
"otp_code": "483920",
"link_candidates": ["https://example.com/confirm?t=abc"],
"otp_candidates": ["483920"]
}
status can be success, partial_success, or timeout.
Tool I/O summary
create_signup_inbox(service_name, ttl_minutes?)
Returns:
{
"inbox_id": "agent42@uncorreotemporal.com",
"email": "agent42@uncorreotemporal.com",
"expires_at": "2026-03-08T12:00:00Z",
"service_name": "github"
}
wait_for_verification_email(inbox_id, timeout_seconds?, poll_interval_seconds?, subject_contains?, from_contains?)
Returns:
{
"status": "received",
"message_id": "msg-1",
"received_at": "2026-03-08T11:30:00Z",
"subject": "Verify your account",
"from_address": "noreply@example.com",
"timeout_seconds": 90
}
get_latest_email(inbox_id, mark_as_read?)
Returns full message body and metadata.
extract_otp_code(message_text? | inbox_id+message_id, otp_length_min?, otp_length_max?)
Returns:
{
"otp_code": "483920",
"candidates": ["483920"]
}
extract_verification_link(message_text? | inbox_id+message_id, preferred_domains?)
Returns:
{
"verification_link": "https://example.com/confirm?t=abc",
"candidates": ["https://example.com/confirm?t=abc"]
}
Configuration
Environment variables:
UCT_API_KEY(required)UCT_API_BASE(optional, default:https://uncorreotemporal.com)UCT_HTTP_TIMEOUT_SECONDS(optional, default:20)UCT_MCP_TRANSPORT(optional,stdioby default; also supportsstreamable-httpandsse)UCT_MCP_HOST(optional, default:0.0.0.0)UCT_MCP_PORT(optional, default:8000)UCT_MCP_PATH(optional, default:/mcp)
Important: inbox_id == email address.
Examples
See /examples:
simple_workflow.pyopenai_agent_signup.pylangchain_agent_signup.pyagent_creates_account.py
Run dry-run:
uv run python examples/simple_workflow.py --dry-run
Docker
Build:
docker build -t uncorreotemporal-mcp .
Run stdio mode:
docker run --rm -i \
-e UCT_API_KEY=uct_your_key_here \
uncorreotemporal-mcp
Run streamable-http mode:
docker run --rm -p 8000:8000 \
-e UCT_API_KEY=uct_your_key_here \
-e UCT_MCP_TRANSPORT=streamable-http \
-e UCT_MCP_PATH=/mcp \
uncorreotemporal-mcp
Breaking Changes
Removed legacy low-level tools:
create_mailboxlist_mailboxesget_messagesread_messagedelete_mailbox
Migration map:
create_mailbox->create_signup_inboxget_messages+read_message->wait_for_verification_email+get_latest_email- multi-step signup orchestration ->
complete_signup_flow
Directory listing assets
Prepared listing payloads are in /directory-listings for:
- modelcontextprotocol/servers
- mcp.so
- awesome-mcp
Public endpoint deployment
Deployment templates for https://uncorreotemporal.com/mcp are in /deploy.
Development
uv run pytest
uv run uncorreotemporal-mcp
Featured
Keep your Mac awake while Claude Code and 40+ AI agents run. Sleeps when they're idle.
One time payment $9 →Integrate web data into your AI product. One API to scrape website & brand data.
Get API Key Now →Agent, run crypto. Access onchain data & trade routes via 1inch.
Install now →On Capafy, your Skill runs online 24/7 as an agent product, and you get paid every time someone uses it.
Start earning →Configuration
UCT_API_KEY*secretYour UnCorreoTemporal API key (get one at https://uncorreotemporal.com). Format: uct_...
UCT_API_BASEAPI base URL. Defaults to https://uncorreotemporal.com
UCT_MCP_TRANSPORTTransport mode: stdio (default), streamable-http, or sse
Registryactive
Packageuncorreotemporal-mcp
TransportSTDIO
AuthRequired
UpdatedApr 19, 2026
