your agent stops before anything risky and asks you on slack, sms, telegram or a phone call (whatsapp soon). you answer. it carries on.
free plan, no credit card, works with any mcp agent
works with any agent that speaks mcp
redphonr handles the hard part of human-in-the-loop: reaching a real person, waiting safely, and bringing the answer back.
billing agent
refund $1,240 to order 88213?
the customer was charged twice on 14 october. both payments cleared.
five mcp tools
approve or deny, pick an option, fill in a form, check a draft, or hand the task over. your agent calls the tool and waits for the answer.
see the toolsseven channels
slack, sms, telegram, discord, email or a phone call (whatsapp soon). the first answer closes the request everywhere else. turn on voice notes and reply by talking.
see every channelprocurement agent
sign the supplier contract with northwind?
escalation
slack first, then a text, then a call, then whoever is on call this week, then their backup. you set the ladder once.
how escalation worksdecisions today
export csv
safe by default
every request has a timeout, and the default is deny. who decided, when, on which channel and what they saw is logged for debugging and audits.
read about the audit logno sdk and no polling loop. if your agent can use an mcp server, it can use redphonr.
one command for claude code, a one-click install for cursor and vs code, or a custom connector in claude. no sdk, no glue code.
claude mcp add --transport http redphonr https://mcp.redphonr.com/mcp --header "Authorization: Bearer rp_live_..."tell the agent which actions need a yes: deletes, payments, deploys, bulk email. it calls request_approval on its own.
request_approval(title="delete 3,200 inactive users?")approve in slack, reply to a text, or press 1 on a call. the agent resumes with your decision as structured data.
{ "decision": "approved", "responded_via": "slack" }how it works, what makes it different, and what it costs. sound on.
database
ALTER TABLE on production locks writes for four minutes. someone should say yes first.
asks priya, on-call engineer
on a voice call
finance
first payment to an unverified account. the agent asks before it sends.
asks lena, finance lead
on sms
outreach
one bad batch hurts deliverability for months. a quick look costs ten seconds.
asks omar, head of sales
on slack
infrastructure
12 nodes to 4, two hours before peak traffic. the on-call engineer decides.
asks marco, platform lead
on sms
access
a token that never expires deserves a human signature.
asks amara, security lead
on slack
data
irreversible, 14GB, possibly under a retention policy. ask the owner.
asks sarah, data protection lead
on telegram
your agent does the work.
you keep the final say.
run as many agents as you like for free. you pay when a person joins your team or gets woken up.
everything your agents need to ask.
$0
$9per teammate / month
$0.50per answered wake-up
sms or a phone call (whatsapp soon), charged only when someone answers. conversational calls are $1.50.
for teams that answer to auditors.
$99/ month, add-on
pick a team, or play with the knobs.
who gets woken up
you are free. each teammate is $9 a month.
$0.50 each, only when someone answers an sms or call (whatsapp soon). slack and email answers are free.
your month
$34.50
cheaper than one missed 3am approval.
need an sla or dedicated infrastructure? talk to us about business.
redphonr is a human-in-the-loop service for AI agents. It runs as an MCP server. When your agent calls a tool such as request_approval, it pauses, redphonr reaches a person on the channels you choose, and the agent resumes with their decision as structured data.
Any agent that can use an MCP server: Claude Code, Claude Desktop, Cursor, Windsurf, the OpenAI Agents SDK, LangChain, CrewAI, Mastra, AutoGen and others. Agents without MCP can call the HTTP API.
redphonr escalates through your ladder, for example Slack, then SMS after five minutes, then a phone call, then the on-call backup. If the request still times out, the agent gets the default you set, which should always be deny.
Tap approve in Slack or Telegram, or just reply in your own words or with a voice note, like "deny, not before Monday". redphonr reads it, asks you to confirm when it isn't clear, and passes your note to the agent. You can also tap the link in an SMS or email, or press 1 to approve and 2 to deny on a voice call.
Yes. Agents, approval requests, Slack, Telegram, Discord, email and your first human are free, with no credit card. You pay $9 a month for each teammate after you, and $0.50 when we wake someone by SMS or phone and they answer (WhatsApp is coming soon). Every account starts with $2 of wake-up credit, and you can top up credit instead of subscribing. You set a monthly limit, so the bill never surprises you.
A request in Slack costs us almost nothing, so it costs you nothing. Waking a person by phone costs real money and is worth it when it works, so we only charge when someone answers. A call nobody picks up is free.
PagerDuty pages engineers about incidents and tracks acknowledgement. redphonr lets an agent ask a question and get an answer back: approve or deny, a choice from a list, or a form. The answer returns to the agent so it can continue.