ClearBounce API

Name: ClearBounce API API
Brand: ClearBounce API
Availability: InStock

★ Only Publicly Available OpenAPI DocumentData EnrichmentContact EnrichmentapiKey4 EndpointsREST

For Agents

Verify whether email addresses are deliverable using single-email checks or asynchronous bulk verification jobs. Returns a job ID for bulk uploads that the agent can poll for status and download.

Quickstart

Get started with ClearBounce API in minutes using your preferred integration method.

# Add to your MCP client config (Claude Desktop, Cursor, Windsurf)
{
  "jentic": {
    "url": "https://api.jentic.com/mcp",
    "auth": "oauth"
  }
}

# Then ask your agent:
"verify an email address"

# → Jentic returns the GET /events tool with parameter schema, agent executes.

Capabilities

What an agent can do with ClearBounce API API.

Verify a single email address synchronously and receive a deliverability verdict

Upload a batch of email addresses for asynchronous bulk verification

Poll the status of a bulk verification job using its job ID

Download the verification results for a completed bulk job

Filter outbound campaign lists by removing addresses flagged as undeliverable

GET STARTED

Start building with ClearBounce API API

Explore with Jentic

View OpenAPI Document

Jentic publishes the only available OpenAPI document for ClearBounce API, keeping it validated and agent-ready.

Jentic publishes the only available OpenAPI specification for ClearBounce API, keeping it validated and agent-ready. ClearBounce is an email verification service that validates individual addresses in real time and runs bulk verification jobs against uploaded lists. Single-email checks return deliverability results synchronously, while bulk uploads return a job ID that can be polled for status and downloaded once complete. The API is suitable for cleaning marketing lists before sending and for inline checks during user signup flows.

Use Cases

Patterns agents use ClearBounce API API for, with concrete tasks.

★ Real-Time Signup Email Validation

Validate the email address a user enters at signup before creating their account, preventing fake accounts and reducing bounce rates on activation emails. ClearBounce's single-email endpoint returns a deliverability verdict synchronously so the signup form can reject or warn the user before submission. Integration sits inline in the signup flow and adds only a single API call per registration.

Call POST /api/v1/verify with the user-supplied email address and reject the signup if the response indicates the address is undeliverable.

Marketing List Cleanup

Clean a large existing email list before a marketing send by uploading it for bulk verification, polling until the job finishes, and downloading the results to remove undeliverable addresses. This protects sender reputation and improves deliverability rates without requiring per-row real-time calls. A list of tens of thousands typically completes within minutes to hours depending on size.

Upload a CSV of 10,000 email addresses to POST /api/v1/bulk/upload, poll GET /api/v1/bulk/{jobId} every 30 seconds until status is complete, then download results from GET /api/v1/bulk/{jobId}/results.

Lead Quality Scoring for Sales

Score inbound leads by checking their email address against ClearBounce before routing them to a CRM. Leads with verified addresses are prioritised in the sales queue while those with role-based or undeliverable emails are flagged or held back. The single-email endpoint runs in under a second so it fits inside webhook handlers or serverless lead-capture functions.

When a new lead webhook fires, call POST /api/v1/verify on the lead email and tag the CRM record as verified, risky, or undeliverable based on the response.

AI Agent Email Hygiene Workflow

Allow an AI agent to maintain email list hygiene as part of a wider outreach pipeline. The agent uploads a list, monitors the bulk job to completion, retrieves results, and updates the source CRM or marketing tool with the verdicts. With Jentic, the agent finds and calls all four ClearBounce operations from a single intent search rather than reading docs, and credentials stay in the Jentic vault.

Search Jentic for 'verify email deliverability', execute the bulk upload operation with the contact list, poll the job until status is finished, and write the per-address results back into the CRM.

Key Endpoints

4 endpoints — jentic publishes the only available openapi specification for clearbounce api, keeping it validated and agent-ready.

METHOD

PATH

DESCRIPTION

POST

/api/v1/verify

Verify a single email address

POST

/api/v1/bulk/upload

Upload a batch of emails for verification

GET

/api/v1/bulk/{jobId}

Check the status of a bulk verification job

GET

/api/v1/bulk/{jobId}/results

Download completed bulk verification results

POST

/api/v1/verify

Verify a single email address

POST

/api/v1/bulk/upload

Upload a batch of emails for verification

GET

/api/v1/bulk/{jobId}

Check the status of a bulk verification job

GET

/api/v1/bulk/{jobId}/results

Download completed bulk verification results

Why though Jentic?

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

Credential isolation

ClearBounce API keys are stored encrypted in the Jentic vault. Agents call the verification operations through scoped access — the raw API key never enters the agent's prompt or context window.

Intent-based discovery

Agents search Jentic with intents like 'verify an email address' or 'bulk email verification', and Jentic returns the matching ClearBounce operation with its input schema so the agent can execute it without reading docs.

Time to first call

Direct ClearBounce integration: half a day to wire auth, polling, and result download. Through Jentic: under 15 minutes — search, load schema, execute.

Related APIs

Alternatives and complements available in the Jentic catalogue.

Alternative

ZeroBounce API

Email verification and scoring service with a richer scoring model than ClearBounce.

Choose ZeroBounce when you need additional signals beyond deliverability such as catch-all detection, abuse flags, or quality scoring.

Alternative

NeverBounce API

Email verification with both real-time and list-cleaning workflows.

Pick NeverBounce when integrating with mainstream marketing tools that already list it as a native option.

Complementary

Hunter API

Finds professional email addresses by domain or name; pair with ClearBounce to verify what Hunter discovers.

Use Hunter to discover candidate addresses, then verify each with ClearBounce before adding them to outreach lists.

Alternative

Kickbox API

Email verification with a focus on real-time API performance.

Use Kickbox when low-latency real-time verification at scale is the primary requirement.

FAQs

Specific to using ClearBounce API API through Jentic.

Why is there no official OpenAPI spec for ClearBounce API?

ClearBounce does not publish an OpenAPI specification. Jentic generates and maintains this spec so that AI agents and developers can call ClearBounce API via structured tooling. It is validated against the live API and kept up to date. Get started at https://app.jentic.com/sign-up.

What authentication does the ClearBounce API use?

ClearBounce uses API key authentication. The key is sent in the Authorization header on every request. When called through Jentic, the key is stored encrypted in the Jentic vault and never enters the agent's context — agents receive scoped access to the operations only.

Can I verify emails in bulk with the ClearBounce API?

Yes. Upload a list of addresses to POST /api/v1/bulk/upload, which returns a job ID. Poll GET /api/v1/bulk/{jobId} until the status indicates completion, then download results from GET /api/v1/bulk/{jobId}/results. This pattern handles lists too large for synchronous verification.

What are the rate limits for the ClearBounce API?

The published OpenAPI spec does not declare explicit rate limits. Real-time verification calls return synchronously and bulk uploads queue server-side, so practical throughput is governed by your account plan. Check the ClearBounce dashboard or contact ClearBounce directly for the limits attached to your key.

How do I verify a single email address through Jentic?

Search Jentic for 'verify an email address', and the SDK returns the POST /api/v1/verify operation with its input schema. Load the schema, pass the email value, and execute. The full flow is: pip install jentic, then await client.search, await client.load, await client.execute.

Is the ClearBounce API free?

ClearBounce offers paid plans tied to verification volume. The API itself does not have a free public tier exposed in the spec; pricing and any free trial credits are managed in the ClearBounce dashboard at the time you provision an API key.