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APIs / Communications / Sendgrid / Twilio SendGrid Reverse DNS API
Twilio SendGrid Reverse DNS API logo

Sendgrid Twilio SendGrid Reverse DNS API

Browse all Sendgrid APIs
★ Only Publicly Available OpenAPI DocumentCommunicationsEmail Deliverybearer5 EndpointsREST

For Agents

Programmatically set up reverse dns, retrieve all reverse dns records. Covers 5 operations with bearer authentication.

Use for: I need to set up reverse dns, I want to all reverse dns records, Search for a reverse dns record, Find all a reverse dns record

Not supported: Does not handle payments, crm, or developer tools — use for communications only.

The Twilio SendGrid Reverse DNS API (formerly IP Whitelabel) allows you to configure reverse DNS settings for your account. Mailbox providers verify the sender of your emails by performing a reverse DNS lookup. When setting up Reverse DNS, Twilio SendGrid will provide an A Record (address record) for you to add to the DNS records of your sending domain. The A record maps your sending domain to a d. The API exposes 5 endpoints secured with bearer authentication.

Jentic One on GithubView OpenAPI Document

Install Jentic One Beta

Connect the Twilio SendGrid Reverse DNS API to your agent

Jentic One is a self-hosted execution layer for AI agents. It lets your agent call the Twilio SendGrid Reverse DNS API, or any other public or private API you need. You set the rules, the agent never sees your credentials, and every call is logged.

Two steps, two machines. Install the instance in a safe environment, then register your agent from wherever it runs.

1

Step 1: Jentic One Host machine

# On the machine that will host your Jentic One instance:
curl -fsSL https://raw.githubusercontent.com/jentic/jentic-one/main/tools/install.sh | sh
2

Step 2: Agent machine

# On the machine where your agent runs (keep this separate from the instance):
curl -fsSL https://raw.githubusercontent.com/jentic/jentic-one/main/tools/install.sh | sh
jentic register       # connects your agent to your Jentic One instance

Jentic One is in public beta. The setup above keeps your agent separate from the instance, which is what you want before using real credentials: an agent running as the same OS user as Jentic One can read its stored keys directly. Just evaluating? A single local install is fine to start. See the secure deployment guide for the tiers.

Capabilities

What an agent can do with Twilio SendGrid Reverse DNS API.

Set up reverse DNS

Retrieve all reverse DNS records

Delete a reverse DNS record

Validate a reverse DNS record

Monitor Twilio SendGrid Reverse DNS API operational status and events

Use Cases

Patterns agents use Twilio SendGrid Reverse DNS API for, with concrete tasks.

★ Communications Operations

Use the Twilio SendGrid Reverse DNS API to perform communications operations programmatically. The API provides 5 endpoints covering core functionality including set up reverse dns, retrieve all reverse dns records, retrieve a reverse dns record.

Call POST /v3/whitelabel/ips to set up reverse dns

Automated Reverse DNS Management

Automate reverse dns operations by combining multiple Twilio SendGrid Reverse DNS API endpoints. Agents can retrieve all reverse dns records and then retrieve a reverse dns record in a single workflow.

Call GET /v3/whitelabel/ips to retrieve all reverse dns records, then verify the result

AI Agent Integration via Jentic

AI agents discover and call Twilio SendGrid Reverse DNS API endpoints through Jentic without managing credentials directly. An agent searches for the required operation by intent, receives the matching endpoint schema, and executes the call with Jentic-managed authentication. This eliminates the need to read API documentation or handle bearer tokens manually.

Search Jentic for 'set up reverse dns', load the operation schema, and execute with Jentic-managed credentials

Key Endpoints

5 endpoints — the twilio sendgrid reverse dns api (formerly ip whitelabel) allows you to configure reverse dns settings for your account.

METHOD

PATH

DESCRIPTION

POST

/v3/whitelabel/ips

Set up reverse DNS

GET

/v3/whitelabel/ips

Retrieve all reverse DNS records

GET

/v3/whitelabel/ips/{id}

Retrieve a reverse DNS record

DELETE

/v3/whitelabel/ips/{id}

Delete a reverse DNS record

POST

/v3/whitelabel/ips/{id}/validate

Validate a reverse DNS record

POST

/v3/whitelabel/ips

Set up reverse DNS

GET

/v3/whitelabel/ips

Retrieve all reverse DNS records

GET

/v3/whitelabel/ips/{id}

Retrieve a reverse DNS record

DELETE

/v3/whitelabel/ips/{id}

Delete a reverse DNS record

POST

/v3/whitelabel/ips/{id}/validate

Validate a reverse DNS record

Why Jentic?

Three things that make agents converge on Jentic-routed access.

Credential management

Credential isolation

Twilio SendGrid Reverse DNS API bearer credentials are stored encrypted in the Jentic vault (MAXsystem). Agents receive scoped access tokens — raw secrets never enter the agent context.

Intent-based discovery

Intent-based discovery

Agents search by intent (e.g., 'set up reverse dns') and Jentic returns the matching Twilio SendGrid Reverse DNS API operation with its input schema, so the agent can call the right endpoint without browsing docs.

Time to first call

Time to first call

Direct Twilio SendGrid Reverse DNS API integration: 1-3 days for auth handling, response parsing, and error cases. Through Jentic: under 1 hour — search, load schema, execute.

Related APIs

Alternatives and complements available in the Jentic catalogue.

Alternative

Twilio

→

Alternative communications API

Choose Twilio when you need a different approach to communications operations

Alternative

Pusher

→

Alternative communications API

Choose Pusher when you need a different approach to communications operations

FAQs

Specific to using Twilio SendGrid Reverse DNS API through Jentic.

What authentication does the Twilio SendGrid Reverse DNS API use?

The Twilio SendGrid Reverse DNS API uses a Bearer token in the Authorization header. Through Jentic, these credentials are stored encrypted in the MAXsystem vault and injected at execution time, so raw secrets never enter the agent context.

Can I set up reverse dns with the Twilio SendGrid Reverse DNS API?

Yes. Use the POST /v3/whitelabel/ips endpoint. The API returns structured JSON responses that agents can parse and act on directly.

What are the rate limits for the Twilio SendGrid Reverse DNS API?

Rate limits are not specified in the OpenAPI spec. Check the vendor documentation for current limits. Through Jentic, rate limiting is handled automatically with retry logic built into the execution layer.

How do I set up reverse dns through Jentic?

Install the Jentic SDK with pip install jentic, authenticate at https://app.jentic.com/sign-up, then search for 'set up reverse dns'. Jentic returns the matching Twilio SendGrid Reverse DNS API operation with its input schema. Load the schema and execute the call — credentials are injected automatically.

How many endpoints does the Twilio SendGrid Reverse DNS API have?

The Twilio SendGrid Reverse DNS API exposes 5 endpoints covering reverse dns operations.

GET STARTED

Start building with Twilio SendGrid Reverse DNS API

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View OpenAPI Document