10 Best API Monitoring Tools in 2026

What happens when an API fails, but your website still appears to be working?

Customers may be unable to sign in, place an order, or complete a payment even though your site is online. A basic uptime check can miss these issues because it only checks whether the API endpoint responds.

The right monitoring approach depends on how your APIs work. A public endpoint may need a simple uptime check, while a login or payment flow may require multiple API calls to run in the right order. You may also need logs, traces, server data, and database data to understand why a request failed.

In this guide, we compare ten of the best API monitoring tools in 2026. We look at what each tool monitors, where it may fall short, and how much it costs.

Let’s get started.

How We Compared the Best API Monitoring Tools

We compared the tools using information from their official product, documentation, and pricing pages. We did not rank them by the length of their feature lists. We looked at the parts that affect daily API monitoring.

• API test support: Can the tool send GET, POST, and other HTTP requests? Can it add headers, data, and authentication?

• Response checks: Can it check status codes, response time, headers, and returned data?

• Multi-step tests: Can one request pass a token or another value to the next request?

• Test locations: Can the tool check an API from regions near your users?

• Private monitoring: Can it test an internal API behind a firewall?

• Alerts: Can it send clear notices through the tools your team already uses?

• Troubleshooting data: Does it show traces, logs, or server data after a test fails?

• Pricing: Is the cost based on users, monitors, endpoints, test runs, locations, or data?

A team with five public endpoints may only need a simple API monitor. A large service with many internal APIs may need private checks, traces, logs, and clear controls for several teams.

10 Best API Monitoring Tools Comparison at a Glance

Let’s now have a quick glimpse of each tool from this table.

What are API Monitoring Tools?

API monitoring tools check your APIs at regular intervals. They alert you when an endpoint stops working, takes too long to respond, or returns the wrong data.

For example, an online store may use one API to sign in a customer, another to check stock, and another to take payment. The website can still load even when one of those APIs has failed. An API monitor can test each request and alert the team before more customers face the same problem.

Some tools only test an API from outside the application. Other tools also collect application traces, logs, and server data. That extra data helps the team move from “the API is slow” to “this database call is making the API slow.”

API monitoring is not the same as API security monitoring. Performance monitoring checks uptime, speed, errors, and response data. Security monitoring looks for threats, unsafe traffic, exposed data, and attacks. Some larger platforms cover both areas, but many API uptime tools do not.

1. Motadata ObserveOps

Best for: Teams that need to find API problems across applications, servers, databases, and networks.

Motadata ObserveOps monitors application transactions and follows requests across services. When an API becomes slow or fails, the team can see which part of the application caused it. Related logs, server data, and database activity are available in the same platform.

An order API may suddenly take six seconds instead of one. ObserveOps can follow that request and show where the delay began. The problem may be in the application code, a database query, or a busy server. The person fixing the issue can see this information with the alert.

ObserveOps is for companies that need to monitor more than public API endpoints. It covers applications, infrastructure, logs, networks, and real user activity. On-premises and hybrid options are also available for teams that cannot send all their monitoring data to a public cloud service.

ObserveOps is not a small endpoint checker. If you only want to ping five public APIs, a simple uptime tool will take less time to set up. Motadata does not list a public price, so you need to contact the company for a quote.

Pricing

Motadata does not list a public price for ObserveOps. You can request a quote or start a 30-day free trial through the official Motadata website.

2. Datadog

Best for: Teams that want API tests and full-stack monitoring in the same platform.

Datadog Synthetic Monitoring lets you test a single API endpoint or a workflow that involves multiple API calls.

You can run these tests from Datadog’s global locations or a private location within your network. The tests can check response codes, response data, response time, and authentication.

You can create a test that gets an access token, sends it to another endpoint, and checks the returned order data. If the test fails, Datadog can open the related traces, logs, and server data. You can then see which service or system caused the failure.

Teams that already use Datadog for applications, logs, or infrastructure can add API tests to the same account. The tests can cover public APIs and private services inside a company network. Alerts can go to Slack, PagerDuty, ServiceNow, and other tools.

Datadog charges for each API test run. Every step in a multi-step test counts as a separate run. The monthly bill rises when you add more tests, steps, or test locations. Application, log, and infrastructure monitoring have separate charges.

Read our Datadog alternatives guide to explore other options.

Pricing

Datadog API testing starts at $5 per 10,000 test runs per month with annual billing. The on-demand rate is $7.20 per 10,000 runs. Datadog counts each request to an endpoint as one run. Each step in a multi-step test also counts as one run.

Read our Datadog pricing guide for a closer look at Datadog’s pricing.

3. Site24x7

Best for: Teams that need REST API checks from many global locations.

Site24x7 checks REST APIs for uptime, response time, and correct response data. It can validate JSON, XML, or text responses. It also supports Basic authentication, NTLM, OAuth 2, and client certificates.

Its REST API Transaction monitor can join up to 25 API requests in one test. A value from one response can be used in the next request. One test could sign in, collect a token, check an account, and confirm that an order was created.

With Site24x7, one account can monitor APIs, websites, servers, cloud services, networks, and applications. API tests can run from more than 130 locations. The results show when a problem only affects one region.

Each Site24x7 plan includes a set number of monitors. You pay more when you need extra monitors or add-ons. The platform also has many menus because it covers several types of monitoring.

Pricing

Site24x7 has a limited free plan. Paid plans start with Starter at $9 per month when billed annually. Professional starts at $42 per month, while Enterprise starts at $625 per month with annual billing. Monitor limits and add-ons affect the final price.

Read our Site24x7 pricing guide for more information about its plans and add-ons.

4. Postman

Best for: Development and QA teams that already create API tests in Postman.

Postman lets teams turn API collections into scheduled monitors. A monitor runs the requests in a collection at set times and checks the tests written for those requests. It can track failures, response codes, response data, and response time.

Developers can write tests while working on an API and use the same collection for regular production checks. You do not need to rebuild those tests in another tool. Environments and variables also let teams run the same checks across different stages or regions.

If your team already uses Postman for API development, collections, and workspaces, you can use those existing tests for scheduled monitoring. API development, manual testing, and monitoring stay in one product. Enterprise customers can also use private runners to test APIs inside their network.

Monitoring is still only one part of Postman. Its reporting and incident management features are more limited than those of a full observability platform. You may need another tool to connect a failed API check with server, log, or trace data.

Pricing

Postman has a free plan with 1,000 monitoring requests per team each month. Paid plans start at $9/month for Solo, $19/user/month for Team, and $49/user/month for Enterprise, billed annually. Paid plans include 10,000 monitoring requests per team each month. Extra requests cost $20 per 50,000.

5. Checkly

Best for: Development teams that want to keep API checks in their code repository.

Checkly provides uptime and synthetic monitoring for websites and APIs. You can send HTTP requests, run multi-step API checks, and run browser tests with Playwright. Teams can create checks in the dashboard or manage them as code.

Developers can keep API checks in the same repository as their application. The checks then go through the same review and release process as the rest of the code. When the application changes, you can update its monitoring check in the same code review.

Checkly works well for developers, platform teams, and SRE teams using JavaScript or TypeScript. Checks can run from public locations, while higher plans add private locations. Alerts can go to email, Slack, SMS, webhooks, and incident management tools.

The free plan has fewer test locations and does not include private locations. The Starter plan supports up to three users. You need the Team plan for private locations or more than three users.

See how Checkly compares with other uptime tools in our UptimeRobot alternatives guide.

Pricing

The Hobby plan is free and includes 10,000 API check runs per month. Starter costs $24 per month with annual billing and includes 25,000 API check runs. Team costs $64 per month with annual billing and includes 100,000 runs.

6. Uptrends

Best for: Teams that need to test chained API requests from many cities.

Uptrends can monitor a single API request or a chain of requests. You can send login details, check the response, and make sure each request in the chain works as expected. The Pro plan can run these checks every minute.

For example, a travel site can test a flight search, save the flight ID, and use it in a booking request. If something fails, Uptrends shows which step failed and where the issue occurred.

SRE and operations teams can also use Uptrends to compare API performance across regions. The Pro plan includes more than 230 checkpoints. Enterprise adds support for services behind a firewall and lets teams manage monitors with Terraform.

API monitoring is not available on the lower Core plan. Uptrends uses monitoring credits, so tests with more API steps or shorter check intervals use more credits and can increase the cost.

Pricing

Uptrends Pro starts at $60 per month with annual billing or $66 per month with monthly billing. An API step starts at $13 per month on annual billing or $14 per month on monthly billing. Enterprise pricing is custom. A 30-day free trial is available.

7. Dotcom-Monitor

Best for: Teams that want a fixed monthly price for a set number of API endpoints.

Dotcom-Monitor's Web Services WebView tests REST, SOAP, and GraphQL APIs. It can also use Postman and Insomnia collections. The service checks availability, response time, and returned data from selected locations.

A team can monitor ten API endpoints every minute from several locations. The monthly price depends on the number of targets and how often each check runs. Once the team chooses those settings, the monthly price stays the same.

Dotcom-Monitor lists a set monthly price for each number of targets and check interval. This lets a team calculate the monthly cost before buying. Paid plans include private agents, one year of data, and alerts through Slack, PagerDuty, Microsoft Teams, ServiceNow, and other tools.

The product is split into monitoring platforms. API checks, browser checks, multi-step browser transactions, and infrastructure checks have different prices. A team that needs several types of monitoring must price each part.

Pricing

The free plan supports up to 25 targets, two locations, and checks as often as every five minutes. Web Services WebView starts at $19.99 per month for 10 targets checked every five minutes. Ten targets checked every minute cost $39.98 per month.

8. Grafana Cloud

Best for: Teams that want API test results in Grafana dashboards.

Grafana Cloud Synthetics can run normal HTTP checks, MultiHTTP checks, and k6 scripted checks. MultiHTTP checks test several URLs in one process. k6 checks let developers write more detailed tests in code.

A team can test its login and account APIs and view the results beside application metrics, logs, and traces. It can also use k6 for load tests before a release and regular checks after the release.

Teams that already use Grafana can show API test results in their existing dashboards. The free plan includes API test executions, and private probes can check endpoints that are not open to the internet.

Grafana charges by test execution. One execution covers one test in one probe location for one minute. Adding more locations or running tests more often increases the execution count and the price.

Read our Grafana alternatives guide to compare it with other dashboard and monitoring tools.

Pricing

The free plan includes 100,000 API test executions and 10,000 browser test executions each month. Grafana Cloud Pro has a $19 monthly platform fee and includes the same amounts before usage charges begin. Extra API tests start at $5 per 10,000 executions.

9. New Relic

Best for: Teams that want API checks with application, log, and infrastructure data.

New Relic Synthetics can run simple ping checks, API checks, browser tests, and scripted tests. It can track uptime, response time, response data, and failed requests. Private locations are available for internal services.

A team can run an API check every few minutes and open the related application data after a failure. Traces show which services handled the request. Logs and server data show what else changed at that time.

New Relic places application, infrastructure, log, browser, and synthetic monitoring in one platform. Its free plan also lets a small team start without paying for each host.

New Relic charges for the data you send and for certain user types. Your bill increases when you send more than the included data amount or add paid users. Synthetic checks have a separate charge after you use the 500 checks included in the free plan.

Read our New Relic alternatives guide to explore other options.

Pricing

New Relic's free plan includes 100 GB of data each month, one full-platform user, and 500 synthetic checks. Data above 100 GB starts at $0.40 per GB on the original data option. Extra synthetic checks cost $0.005 per check.

Read our New Relic pricing guide for a closer look at New Relic’s pricing.

10. Better Stack

Best for: Small teams that need API uptime checks and clear on-call alerts.

Better Stack can monitor REST APIs, websites, ports, DNS, and other public services. Its uptime monitor checks whether an endpoint responds on time and returns the expected text.

For example, a team can check an order API every 30 seconds. If it fails, Better Stack can retry the check from another location and alert the person on call through phone, SMS, email, Slack, or Microsoft Teams.

Small teams can manage uptime checks, on-call schedules, status pages, and alerts in one place. Better Stack also offers logs, traces, infrastructure monitoring, and real user monitoring when you need more information about an issue.

Better Stack is more suited to API uptime monitoring than detailed API testing. It does not offer the same multi-step API workflow features as tools such as Site24x7 or Uptrends. If your API checks need complex request logic, you may need another tool.

Pricing

The free plan includes 10 monitors and heartbeats. The paid Responder plan starts at $29 per license per month with annual billing or $34 with monthly billing. It includes 10 monitors. Another 50 monitors cost $21 per month with annual billing or $25 with monthly billing.

What to Check Before You Pick an API Monitoring Tool

What Does the Test Need to Check?

A simple uptime monitor is enough if you only need to know whether an endpoint is online and fast. Better Stack and Dotcom-Monitor can handle these checks without a long setup.

You need multi-step monitoring when one user action depends on several API calls. Site24x7, Datadog, Checkly, Uptrends, and Grafana Cloud can test the full process instead of one endpoint.

A full observability platform is better when an alert does not explain what caused the problem. Motadata ObserveOps, Datadog, and New Relic can connect an API issue with application and infrastructure data.

Does the Tool Support Your Login Method?

List the methods your APIs use. These may include API keys, Basic authentication, OAuth 2, client certificates, or a token returned by another request. A tool is not useful if it cannot complete the same sign-in process as your application.

Where Will the Tests Run?

Public test locations show how an API responds in different regions. Private locations are needed for internal APIs that are not open to the internet. Check whether private monitoring is included in the plan you want. Some vendors keep it for higher plans.

What Will It Cost Each Month?

Do not compare entry prices alone. Count your endpoints, check interval, locations, and steps. A five-step test from three locations creates far more usage than one endpoint checked from one location.

Also check user charges, data charges, alert charges, and retention limits. The least expensive starting plan may not be the least expensive plan for your setup.

Do the Alerts Work?

Create a safe failure during the trial. Check how long the alert takes to arrive and whether it explains the failed step. Make sure recovery alerts also work. A monitor that creates unclear or repeated alerts adds work during an incident.

What are the Important API Monitoring Features to Check?

1. Uptime and Response Time

The tool should show whether an API is available and how long each request takes. Trend charts help you find a slow change before it becomes a full outage.

2. Checks for the Right Response

A 200 OK response does not always mean the API worked. The returned data may be empty or wrong. Good monitors can check JSON values, text, headers, and response structure.

3. Multi-Step API Monitoring

Many tasks need more than one request. A monitor should be able to take a token, ID, or other value from one response and use it in the next request.

4. Public and Private Test Locations

Global checks can find regional network and service problems. Private checks cover internal APIs, test systems, and services behind a firewall.

5. Clear Alerts

Alerts should state which API failed, where it failed, and which check caused the alert. Links to logs, traces, and response data can reduce the time needed to find the cause.

6. API Monitoring Dashboard

A useful API monitoring dashboard should show uptime, response time, failures, test locations, and recent changes on one page. It should also let you filter the results by service, team, or region.

Which API Monitoring Tool Fits Your Team?

If you need more than an API uptime check and want to understand why an API fails, Motadata ObserveOps is worth considering.

It brings API monitoring together with application, infrastructure, and transaction data, so your team can investigate an issue without switching between multiple tools.

Before you choose a plan, test your main API workflows, check how alerts reach your team, confirm whether you need private monitoring, and estimate your monthly usage.

This will give you a better idea of whether Motadata ObserveOps fits your monitoring needs.

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