Google reCAPTCHA Enterprise API

Name: reCAPTCHA Enterprise API
Brand: reCAPTCHA Enterprise API
Availability: InStock

✓ Official Vendor SpecSecurityThreat Detectionoauth218 EndpointsREST

Install Jentic One Beta

Connect the reCAPTCHA Enterprise API to your agent

Jentic One is a self-hosted execution layer for AI agents. It lets your agent call the reCAPTCHA Enterprise 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.

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

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 reCAPTCHA Enterprise API.

Create assessments to score the risk of a user action and receive a 0.0 to 1.0 risk score

Annotate previous assessments with the observed outcome to improve model accuracy

Create and manage reCAPTCHA Enterprise site keys for web and mobile clients

GET STARTED

Start building with reCAPTCHA Enterprise API

Explore with Jentic

View OpenAPI Document

For Agents

Score user actions for risk, manage site keys and firewall policies, and run IP overrides on Google reCAPTCHA Enterprise.

Use for: I need to score a sign-up attempt for risk using reCAPTCHA Enterprise, Annotate a previous assessment as legitimate after manual review, Create a new site key for our checkout page, Add an IP override to allow our office IP through firewall policies

Not supported: Does not handle WAF rule enforcement, network-layer DDoS mitigation, or end-to-end identity verification - use for action-level risk scoring, firewall policies, and site key management only.

Use Cases

Patterns agents use reCAPTCHA Enterprise API for, with concrete tasks.

★ Sign-up and Login Fraud Protection

Sites send a reCAPTCHA token from their sign-up or login form to the Assessments API to receive a risk score and a list of reasons. Sites use that score to decide whether to allow the action, throw up additional verification, or block. Annotation calls back into the API help close the loop on which assessments turned out to be fraudulent.

Call POST /v1/{+parent}/assessments with the token and expected action login, then route the user to MFA when the score is below 0.5.

Firewall Policies for High-Risk Routes

Firewall policies let teams declare actions (allow, block, redirect, substitute) keyed off assessment results without changing application code. Policies can be reordered to express priority, and IP overrides allow trusted networks to bypass them entirely.

Create a firewall policy that blocks any request to /admin with score below 0.3, then call POST /v1/{+parent}/firewallpolicies:reorder to put it ahead of the default allow policy.

Migrating Classic reCAPTCHA Keys

Sites moving from classic reCAPTCHA to reCAPTCHA Enterprise need to migrate keys without breaking existing form integrations. The API exposes a migrate operation and a retrieveLegacySecretKey operation so the transition can be staged behind feature flags.

Call POST /v1/{+name}:migrate on the legacy key resource, then POST /v1/{+key}:retrieveLegacySecretKey to fetch the secret needed by existing form posts.

Agent-Driven Risk Triage

A trust and safety agent uses Jentic to fetch assessments, annotate them with verified outcomes, and adjust firewall policies in response to fraud waves, replacing manual console work and giving the agent a clear audit trail of changes.

Search Jentic for annotate a recaptcha assessment, load the schema for projects.assessments.annotate, and execute it with annotation LEGITIMATE for a manually verified user.

Key Endpoints

18 endpoints — google recaptcha enterprise protects websites and apps from fraudulent activity, spam, and abuse using risk scores derived from billions of signals.

METHOD

PATH

DESCRIPTION

POST

/v1/{+parent}/assessments

Create an assessment to score a user action

POST

/v1/{+name}:annotate

Annotate a previous assessment with the observed outcome

POST

/v1/{+name}:addIpOverride

Add an IP override to a firewall policy or key

POST

/v1/{+name}:removeIpOverride

Remove an IP override

POST

/v1/{+parent}/firewallpolicies:reorder

Reorder firewall policies by priority

POST

/v1/{+name}:migrate

Migrate a classic reCAPTCHA key to reCAPTCHA Enterprise

GET

/v1/{+key}:retrieveLegacySecretKey

Retrieve the legacy secret for a migrated key

POST

/v1/{+parent}/assessments

Create an assessment to score a user action

POST

/v1/{+name}:annotate

Annotate a previous assessment with the observed outcome

POST

/v1/{+name}:addIpOverride

Add an IP override to a firewall policy or key

POST

/v1/{+name}:removeIpOverride

Remove an IP override

POST

/v1/{+parent}/firewallpolicies:reorder

Reorder firewall policies by priority

Why Jentic?

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

Credential isolation

Your Google OAuth credential is stored once, encrypted, by your own Jentic One instance and a scoped access token is injected at execution time. The credential never enters the agent's prompt, logs, or context.

Intent-based discovery

Agents search Jentic by intent such as 'score a user action' or 'add an IP override to a firewall policy', and Jentic returns the matching reCAPTCHA Enterprise operation with its input schema so the agent calls the right endpoint without navigating the reference docs.

Time to first call

FAQs

Specific to using reCAPTCHA Enterprise API through Jentic.

What authentication does the reCAPTCHA Enterprise API use?

The API uses Google OAuth 2.0 with the cloud-platform scope, sent as a Bearer token. Through Jentic the OAuth credentials live in the vault and short-lived access tokens are minted per call, so the underlying refresh token never enters the agent.

What does an assessment score mean?

An assessment returns a risk score from 0.0 (very likely abusive) to 1.0 (very likely legitimate) along with reasons such as AUTOMATION or UNEXPECTED_USAGE_PATTERNS. Sites set their own thresholds, with login forms typically allowing above 0.7, challenging the 0.3-0.7 band, and blocking below 0.3.

What are the rate limits for the reCAPTCHA Enterprise API?

Per-project quotas are documented in the reCAPTCHA Enterprise quotas page. Assessments scale to high QPS by default; firewall policy and key management calls are control-plane operations and have lower quotas.

How do I score a sign-up through Jentic?

Search Jentic for create a recaptcha assessment, load the schema for the projects.assessments.create operation which maps to POST /v1/{+parent}/assessments, and execute it with the token from the form, the site key, and the expected action.

Is the reCAPTCHA Enterprise API free?

Yes up to a generous monthly free tier of assessments per project, with overage pricing published on the reCAPTCHA Enterprise pricing page. Firewall policies and site key management are not separately billed.

How do I add an IP override?

Call POST /v1/{+name}:addIpOverride with the IP CIDR and override type (e.g., allow) on the firewall policy or key resource. Use removeIpOverride to revert when the trusted source is no longer needed.

Can I limit what my agent is allowed to do with the reCAPTCHA Enterprise API?

Yes. Because your Jentic One instance is self-hosted, your own rules decide which reCAPTCHA Enterprise operations and credentials the agent may use, and this API puts the project, key, and policy resource names in the URL path so a rule can pin the agent to a single project's keys and assessments. You can allow it to score user actions with POST /v1/{+parent}/assessments and annotate them, while withholding sensitive operations like migrating a classic key or retrieving a legacy secret unless you explicitly add them. The operator controls the exact set of operations and the OAuth credential the agent can reach at execution time.

Google reCAPTCHA Enterprise API

Connect the reCAPTCHA Enterprise API to your agent

Capabilities

Start building with reCAPTCHA Enterprise API

Use Cases

Key Endpoints

Why Jentic?

Related APIs

FAQs