CallerAPI provides a white-label caller identification API that enhances customer trust, stops spam, fraud, and robocalls by offering branded caller ID solutions.
CallerAPI provides a white-label caller identification API that enhances customer trust, stops spam, fraud, and robocalls by offering branded caller ID solutions. On Nagent, Callerapi is exposed as a fully-configurable phone & sms integration that any agent can call — 7 actions, and API key authentication. No code is required to wire Callerapi into your workflow — connect it once via the External Integrations panel and reuse it across every agent you build.
Agent builders use Callerapi to automate the kinds of tasks phone & sms teams previously handled manually. Concrete examples — each one is a single agent step in Nagent — include:
Every action and trigger is paired with a structured input/output schema (visible in the sections below), so when you wire Callerapi into Helix — our agentic agent builder — the editor knows exactly what each step expects and produces. Configure once, deploy anywhere across your Nagent agents.
Every operation an agent can call against Callerapi, with input parameters and output schema. Drop these into any step of an agent built in Helix.
CALLERAPI_DISPATCH_REPORTS_MANUALLYTool to manually trigger today's spam reports webhook delivery for enterprise clients. Use when an immediate webhook dispatch of spam complaint reports is needed. This endpoint is restricted to enterprise accounts only.
Output
Data from the action execution
Error if any occurred during the execution of the action
Whether or not the action execution was successful or not
CALLERAPI_GET_PHONE_NUMBER_INFORMATIONTool to retrieve detailed information about a specific phone number, including reputation, business and carrier details, and FTC complaints. Use when the number is in E.164 format and set hlr=true to include HLR data (adds 1-3 seconds to response).
Input parameters
Include HLR (Home Location Register) data; adds 1-3 seconds to response but incurs no extra cost.
The phone number in E.164 format, e.g., '+16502530000'.
Output
Data from the action execution
Error if any occurred during the execution of the action
Whether or not the action execution was successful or not
CALLERAPI_GET_USER_INFORMATIONTool to retrieve information about the authenticated user, including email and credit usage details. Use after authentication to fetch current credits spent, monthly allocation, and credits left.
Output
Data from the action execution
Error if any occurred during the execution of the action
Whether or not the action execution was successful or not
CALLERAPI_LIST_WEBHOOK_SUBSCRIPTIONSTool to list all webhook subscriptions for daily spam reports. Enterprise clients only. Use to retrieve all configured webhook endpoints that receive spam complaint notifications.
Output
Data from the action execution
Error if any occurred during the execution of the action
Whether or not the action execution was successful or not
CALLERAPI_SUBSCRIBE_DAILY_REPORTSTool to subscribe to daily spam report webhooks for enterprise clients. Instead of polling, receive webhook deliveries with spam complaint data daily. Use when you want to set up automated daily reports for spam complaints.
Input parameters
Webhook URL where daily spam report data will be delivered. Must be a valid HTTPS URL accessible from CallerAPI servers.
Output
Data from the action execution
Error if any occurred during the execution of the action
Whether or not the action execution was successful or not
CALLERAPI_TEST_WEBHOOKTool to send a sample webhook payload to test your webhook endpoint integration. Use to validate webhook signature verification and endpoint configuration. Enterprise clients only.
Input parameters
Webhook URL to send test payload to for validation. Must be a valid HTTPS URL.
Output
Data from the action execution
Error if any occurred during the execution of the action
Whether or not the action execution was successful or not
CALLERAPI_UNSUBSCRIBE_DAILY_REPORTSTool to unsubscribe from daily spam report webhooks. Use when you need to stop receiving daily reports at a specific webhook URL. Enterprise clients only.
Input parameters
Webhook URL to unsubscribe from daily spam reports. Must be a valid URL.
Output
Data from the action execution
Error if any occurred during the execution of the action
Whether or not the action execution was successful or not
No publicly available marketplace agent is found using this tool yet. There are 63 agents privately built on Nagent that already use Callerapi.
Build on Nagent
Connect Callerapi to any Nagent agent in minutes — no API key management, no boilerplate. Just configure and deploy.
The five questions agent builders ask before adopting a new integration.
Open the External Integrations panel inside Nagent (app.nagent.ai/externalIntegration), find Callerapi, and click "Connect Now." You'll authenticate with an API key — Nagent handles credential storage and refresh automatically. Once connected, Callerapi is available to any agent in your workspace.
No. Nagent provides no-code integration for every tool. Once Callerapi is connected, you configure its 7 actions directly in the agent builder UI — no API calls, no boilerplate, no schema management.
Helix — Nagent's agentic agent builder — lets you drop Callerapi steps into any workflow visually. Pick an action (e.g., one of those listed above), fill in the inputs (Helix knows the required vs. optional schema for each parameter), and connect it to upstream/downstream steps. Triggers run as the entry point of an agent, so when a Callerapi event fires, the agent kicks off automatically.
Every Callerapi action and trigger ships with a fully-typed schema — input parameters with name, type, required flag, and description, plus the output payload shape. The schemas are documented in the sections above. Helix uses these schemas to validate your configuration at build time and to type-check the data flowing between steps.
Yes. While Callerapi ships with 7 pre-built phone & sms actions, you can layer custom logic around them inside Helix — pre/post-processing steps, conditional branches, retries, or stitching Callerapi together with other connected tools. For deeper customization, talk to our team about Nagent's Agentic AI Lab — forward-deployed engineers who build Callerapi-based workflows tailored to your business.