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Callingly for AI agents

Callingly automates fast call and text follow-up to new sales leads, connecting to a team's CRM so reps reach prospects before they go cold. Connect it once through Arc0, and your agent, or Claude, ChatGPT and Cursor, can use it through one MCP endpoint, limited to what each user approved.

Connect CallinglySee the 29 actions ↓
CommunicationAPI keyMCP + RESTcallingly.com
AUDIT LOG · CALLINGLYPOLICY: acme-support
09:41:07 · claude · u_8f2read
callingly.list_calls
List Calls✓ allowed · 212ms
09:41:08 · claude · u_8f2read
callingly.get_call
Get Call✓ allowed · 164ms
09:41:09 · claude · u_8f2write
callingly.create_call
Create Outbound Call✓ approved · approved by user
09:41:12 · claude · u_8f2destructive
callingly.delete_lead
Delete Lead✕ blocked · policy: deny
EVERY CALLINGLY CALL, ON THE RECORD
01 · USE CASES

What agents do in Callingly.

01

Look up a lead before calling

Look up a lead's details and call history before a rep follows up.

02

Trigger an outbound call

Trigger an outbound call to a new lead the moment it comes in.

03

Confirm before deleting a lead

Confirm before deleting a lead record, since its call history is removed along with it.

02 · ACTIONS

29 Callingly actions, graded by risk.

Every Callingly action is tagged read, write or destructive, so one policy covers the whole app and new actions inherit the right default.

read

12

Look things up. Allowed by default.

  • callingly.get_call
    Get Call
  • callingly.get_lead
    Get Lead
  • callingly.get_team
    Get Team
  • callingly.list_calls
    List Calls
  • callingly.list_leads
    List Leads
  • callingly.list_teams
    List Teams
  • callingly.list_users
    List Users
  • callingly.get_webhook
    Get Webhook
  • callingly.list_clients
    List Clients
  • callingly.list_webhooks
    List Webhooks
  • callingly.list_team_users
    List Team Users
  • callingly.get_agent_schedule
    Get Agent Schedule

write

11

Create and change things. Allow, or ask the user first.

  • callingly.create_call
    Create Outbound Call
  • callingly.create_team
    Create Team
  • callingly.update_lead
    Update Lead
  • callingly.create_agent
    Create Agent
  • callingly.update_agent
    Update Agent
  • callingly.create_client
    Create Client
  • callingly.create_webhook
    Create Webhook
  • callingly.update_webhook
    Update Webhook
  • callingly.update_schedule
    Update Agent Schedule
  • callingly.update_team_users
    Update Team Users
  • callingly.update_team_agent_settings
    Update Team Agent Settings

destructive

6

Delete, cancel or archive. Ask first, or deny outright.

  • callingly.delete_lead
    Delete Lead
  • callingly.delete_agent
    Delete Agent
  • callingly.delete_client
    Delete Client
  • callingly.delete_webhook
    Delete Webhook
  • callingly.remove_team_agent
    Remove Team Agent
  • callingly.activate_deactivate_client
    Activate/Deactivate Client Account
03 · HOW IT WORKS

Callingly in three steps.

  1. 01Your users connect CallinglyThey add their Callingly api key on Arc0 Connect, under your brand. It goes straight into the vault.
  2. 02You set the rulesReads run, writes like “create Outbound Call” can wait for the user, and “delete Lead” can be denied outright.
  3. 03Any agent can actYour agent calls Callingly through the Arc0 SDK or MCP, and so can Claude, ChatGPT and Cursor. Every call lands on the audit log.
POLICY.TS
await arc0.policies.set('callingly', {
  read: 'allow',
  write: 'ask',        // create_call
  destructive: 'deny',  // delete_lead
})

# Claude Code: the same connection, one URL
$ claude mcp add --transport http arc0 \
    https://mcp.arc0.ai/u/u_8f2
04 · AUTH AND DATA

How Callingly connects.

Users add their Callingly api key on Arc0 Connect. It is encrypted in the vault, never shown to the model, and each user can rotate or revoke it at any time.

The same Callingly connection serves your agent over MCP and your own backend over REST and the proxy, so a user connects once. How Arc0 handles credentials →

AUTH
API key
CREDENTIALS
Per-tenant encrypted vault
MODEL SEES
Results only, never credentials
AUDIT LOG
Every call, on every plan
05 · WORKS WITH

Use Callingly from any agent.

Claude
ChatGPT
Cursor
Codex
VS Code
OpenAI Agents SDK
Claude Agent SDK
Vercel AI SDK
Mastra
LangGraph
06 · RELATED

More communication apps.

Slack168 actionsMicrosoft Teams174 actionsDiscord28 actionsSlackbot101 actions2chat5 actionsAimTell15 actionsAndroid Texter11 actionsDialpad192 actions
ALL COMMUNICATION APPS →
07 · FAQ

Callingly and Arc0, answered.

Q01

Can I use Callingly with Claude, ChatGPT or Cursor?

Yes. Connect Callingly to Arc0 once, then add your Arc0 MCP URL to Claude, ChatGPT, Cursor, Claude Code or any other remote-MCP client. Each assistant only gets the Callingly actions you allow.

Q02

How do users connect Callingly?

Users add their Callingly api key on Arc0 Connect. It is encrypted in the vault, never shown to the model, and each user can rotate or revoke it at any time.

Q03

Which Callingly actions can my agent take?

29 in total: 12 read, 11 write and 6 destructive, such as “create Outbound Call”. Your policies decide which of them each agent may call.

Q04

Can I stop my agent from deleting things in Callingly?

Yes. Actions like “delete Lead” are graded destructive. Set destructive actions to deny, or to ask so the user approves each one, and blocked calls still show up on the audit log.

Q05

Can my own backend call Callingly too?

Yes. The same Callingly connection is available over REST and through the Arc0 proxy, so your product and your agent share one connection per user.

Get started

Plug Callingly into your agent.

Your users connect Callingly once, under your brand. Your agent gets 29 actions behind your policies, with every call on the record.

Connect CallinglyBrowse all apps →

Free to build · MCP + REST · Audit log on every plan