> ## Documentation Index > Fetch the complete documentation index at: https://www.checklyhq.com/docs/llms.txt > Use this file to discover all available pages before exploring further. # Checkly Agent Changelog > Release history for the Checkly Agent For major release announcements and summaries, see Checkly's [product changelog](https://feedback.checklyhq.com/changelog?c=Checkly+Agent), filtered by `Checkly Agent`. Learn more about: * updating to the latest version in [updating the agent container](https://www.checklyhq.com/docs/platform/private-locations/agent-configuration.md#updating-the-agent-container) * supported runtimes for each agent version in [agent version and runtimes](https://www.checklyhq.com/docs/platform/private-locations/agent-configuration.md#agent-version-and-runtimes) ## Full release history **v8.11.0** * Expanded native Fetch API support in runtimes 2025-04 and 2026-04. Scripts can now use FormData, Blob, File, Headers, Request, and Response, including multipart/form-data requests and file uploads with native fetch(). * Added compression for logs and reports from scheduled checks, enabled per account, to reduce artifact upload sizes. * Updated agent and bundled 2026-04 runtime dependencies to fix vulnerabilities. **v8.10.1** * Fixed SSL checks that could report success when a server rejected the supplied client certificate. * Removed unnecessary live updates for scheduled checks. **v8.10.0** * Expanded the APIs available to check scripts with support for AbortController, AbortSignal, and Node.js stream/promises, enabling cancellable operations and promise-based stream handling. * Reduced memory use when processing large error messages. **v8.9.0** * Added support for the Coralogix US3 region. * Updated bundled runtime dependencies to fix vulnerabilities. **v8.8.1** * Improved private location agent image builds to avoid inclusion of unneeded runtimes in intermediate layers. * Updated the bundled 2026-04 runtime dependencies to remove vulnerabilities, including updates to @faker-js/faker, @xmldom/xmldom, csv-parse, imapflow, mysql2, prisma, and nodemailer. * Improved client certificate selection across supported check types. URL-based requests can now match certificates by optional path scope, while host-only checks continue to match by host. **v8.8.0** * Update various dependencies to fix vulnerabilities * Improvements in uploading larger assets for [Playwright Check Suites](https://www.checklyhq.com/docs/detect/synthetic-monitoring/playwright-checks/overview.md) **v8.7.0** * Internal errors of the agent's Node.js component (which runs browser, multistep and Playwright checks) are now reported to the private location's Errors tab, like the Go component's already were **v8.6.0** * Fixed a bug that prevented pcap files from being cleaned up * Expose `CHECKLY_TRACE_ID` to API check setup & teardown scripts * Playwright Check Suites: add support for [Checkly Traces](https://www.checklyhq.com/docs/resolve/traces/overview.md) * Update various dependencies to fix vulnerabilities **v8.5.0** * Uptime checks can run with response time limits up to 45s (TCP, API and URL), enabled per account * gRPC checks support server-streaming methods, plus improved encoding for advanced schema types * Browser checks can simulate constrained bandwidth * API check responses render image previews * Playwright Check Suites: network and console entries are extracted from traces, and trace retention now follows your account setting * Fixes: pnpm workspace caching on repeated runs, empty Playwright video assets, artifact upload reliability, multi-step method timeouts, and SSL hostname handling * Update various dependencies to fix vulnerabilities **v8.4.2** * Added automatic Web Vitals collection for Playwright Check Suites on Chromium. * Playwright Check Suites now respect your trace settings, with tracing enabled on the first retry by default. * Improved reporting of internal errors so affected Playwright Check Suites return a result instead of leaving the run incomplete. * Added SSL assertions for individual certificate properties. * gRPC checks now always store response bodies. * Corrected the default UDP traceroute probe port to 33434. **v8.4.1** * Improved SSL certificate diagnostics, including detection of incomplete certificate chains and stapled certificate revocation status. * Fixed SSL hostname validation when an SNI override is configured. * Fixed API checks with text-body assertions on binary responses. * Improved Playwright Check Suite configuration handling. * Pinned npm to a version compatible with the bundled Node.js runtimes. **v8.4.0** * Support for running gRPC, traceroute, and SSL checks * Always scrub potentially sensitive headers (Authorization, x-api-key, cookie, etc) even if they don’t contain secrets * Downgrade one of the dependencies that prevented the agent from running on older CPU hardware **v8.3.4** * Update various dependencies to fix vulnerabilities * Add `--refresh-cache` functionality **v8.3.3** * Fixed a bug that caused agent health and readiness probes to fail during graceful shutdown. **v8.3.2** * Update vm2 dependency: 3.11.3 → 3.11.5. **v8.3.1** * Fixed a bug that prevented users of pnpm workspaces to run their PWCS on private locations in certain scenarios. * Test failures and setup errors are now surfaced in the user-visible log alongside the existing report. **v8.3.0** * Added support for cancelling running Playwright check suites * Playwright check suites can run in different NodeJs or Bun versions (22, 24, 26 or Bun 1.3) **v8.2.0** * Improved Playwright browsers installation * Playwright Check Suites now cache Playwright browsers across runs in the same Private Location Agent * Upgraded dependencies such as `vm2` 3.10.5 → 3.11.3 and `axios` 1.15.0 → 1.16.1 * Patched Checkly's `markCheckAsDegraded` helper when used with soft assertions **v8.1.0** * [Global timeouts](https://playwright.dev/docs/test-timeouts#global-timeout) now apply and surface correctly in Playwright Check Suites * Improved scheduling for long-running Playwright Check Suites **v8.0.1** * Resolved several dependency vulnerabilities in the private location image **v8.0.0** Latest agent image with [runtime 2026.04](https://www.checklyhq.com/docs/platform/runtimes/runtime-specification.md#2026-04) only. * Previous versions bundled two runtimes to support gradual upgrades * This could surface vulnerabilities from the older runtime in security scans * From v8 onward, only the latest runtime is included **Upgrade path** * Already on `2026-04`: upgrade directly * On older runtimes: use the [migration image](#v7-0-2) (`7.0.2-migrate-202409-202604`) to move to `2026-04`, then upgrade to v8 **v7.1.0** * Improved scheduling for long-running Playwright Check Suites to prevent duplicate execution. * Fixed reporting of Playwright runs that reach the global timeout or are interrupted. * Added test errors to check logs for easier diagnosis. **v7.0.3** Patches vulnerabilities in dependencies bundled with the [2026.04 runtime](https://www.checklyhq.com/docs/platform/runtimes/runtime-specification.md#2026-04). Fix-forward updates only. Updated packages: * `@azure/identity` 4.13.0 → 4.13.1 * `@clerk/testing` 1.14.2 → 1.14.3 * `@opentelemetry/exporter-metrics-otlp-grpc` 0.212.0 → 0.215.0 * `@xmldom/xmldom` 0.9.8 → 0.9.10 * `axios` 1.13.5 → 1.15.0 * `imapflow` 1.2.10 → 1.3.1 * `lodash` 4.17.23 → 4.18.1 * `prisma` 7.4.1 → 7.8.0 * `protobufjs` 8.0.0 → 8.0.1 **v7.0.2** * Includes security patches for runtime `2026-04` * Migration image (`7.0.2-migrate-202409-202604`) available: Bundles runtimes `2024-09`, `2025-04`, and `2026-04`, allowing you to upgrade from older runtimes to `2026-04` **v7.0.1** * [ICMP monitors](https://www.checklyhq.com/docs/detect/uptime-monitoring/icmp-monitors/overview.md) no longer require full root privileges to run * Fixed broken runtime dependencies in agent containers. Incorrect symlinks for the `2025-04` and `2026-04` runtimes caused dependency resolution failures (affecting agent v6.3.2 and v7.0.0) * Fixed connectivity issues when IPv6 is disabled. The agent now falls back to IPv4 automatically * API checks and URL monitors now capture [packets and traceroutes](https://www.checklyhq.com/docs/platform/network-diagnostic-tools.md) on network failures * Bun is now supported as a package manager in [Playwright Check Suites](https://www.checklyhq.com/docs/detect/synthetic-monitoring/playwright-checks/overview.md) * Degraded status now correctly appears in the [test reporter](https://www.checklyhq.com/docs/detect/testing/playwright-reporter.md) header **v7.0.0** * Added support for running [ICMP](https://www.checklyhq.com/docs/detect/uptime-monitoring/icmp-monitors/overview.md) and [DNS monitors](https://www.checklyhq.com/docs/detect/uptime-monitoring/dns-monitors/overview.md) on Private Locations * Introduced the [uptime agent image](https://www.checklyhq.com/docs/platform/private-locations/agent-images.md#uptime-image), a lightweight version of the agent for running uptime monitors (URL, DNS, TCP, ICMP) only * Added [external observability](https://www.checklyhq.com/docs/platform/private-locations/agent-configuration.md#external-observability) for Private Location agents to capture runtime errors * Error-level events can be reported to Checkly to help detect crashes, bugs, and environment-related issues * Only limited technical metadata is collected (error message, stack trace, agent version, platform, Go runtime) * Sensitive data such as API keys, environment variables, check configuration, URLs, headers, and response bodies is never sent * Enabled by default, can be disabled with `EXTERNAL_OBSERVABILITY=off` * Support for runtimes `2026.04` and `2025.04` **Breaking changes** * API checks and URL monitors migrated to the Go runner now percent-encode reserved characters in query parameter data, following [RFC 3986, Section 2.2](https://datatracker.ietf.org/doc/html/rfc3986#section-2.2). For example, `(` and `)` are sent as `%28` and `%29`. Target servers that treat the encoded and unencoded forms differently may require changes. * TLS certificate validation for an IP-address target now requires the certificate to contain that IP address in its Subject Alternative Name as an `iPAddress`, following [RFC 5280, Section 4.2.1.6](https://datatracker.ietf.org/doc/html/rfc5280#section-4.2.1.6). Checks targeting an IP address fail TLS validation when the certificate does not contain a matching IP address SAN. **v6.3.2** * Improved error logging for failed Playwright test report uploads, including the report file size * Increased the maximum artifact upload size from 75 MB to 150 MB **v6.3.1** The agent now exposes HTTP health probe endpoints: * **GET /-/readiness**: Returns `200 OK` when the agent is ready, `503 Service Unavailable` during shutdown * **GET /-/liveness**: Returns `200 OK` * **GET /health**: Returns `200 OK` Health endpoints run on port 8081 by default, configurable via the `AGENT_HEALTH_PORT` environment variable **v6.3.0** * Added [agent-dev image](https://www.checklyhq.com/docs/platform/private-locations/agent-images.md) including build tools to support building native npm packages. Going forward, the dev variant is published as a separate image rather than a tag on the main agent image * Improved secret scrubbing speed * Improved error logging for hanging or long running Playwright Check Suite jobs **v6.2.0** Ensured `devDependencies` are not installed in the agent image **v6.1.7** * Added support for a [dev image](https://www.checklyhq.com/docs/platform/private-locations/agent-images.md) including build tools to support building native npm packages * Improved internal logging and metrics for [Playwright Check Suites](https://www.checklyhq.com/docs/detect/synthetic-monitoring/playwright-checks/overview.md) * Browser and Multistep checks using runtime 2025.04 now automatically scrub the `Authorization` header from requests **v6.1.6** Added Checkly environment variables and configuration to [Playwright Check Suites](https://www.checklyhq.com/docs/detect/synthetic-monitoring/playwright-checks/overview.md). See the docs on [Playwright Check Suites environment variables](https://www.checklyhq.com/docs/detect/synthetic-monitoring/playwright-checks/environment-variables.md): * Adds support for `CHECKLY` to all checkly triggered runs: scheduled checks and test sessions triggered through either `npx checkly test`, `npx checkly trigger` or `npx checkly pw-test` * Includes the environment variable `CI` as true only for test session triggered runs **v6.1.5** Added Playwright test metrics to the check overview page, including **Test performance** and **Test statuses** graphs **v6.1.4** Minor patches on reporting **v6.1.3** Improved and centralized secret scrubbing for more reliable removal of sensitive data **v6.1.2** Added support for `CHECKLY_SECRET_*` environment variables. Secrets containing special characters (e.g. `@`, `%`, `!`, `+`) are now reliably scrubbed from traces, including when they appear in encoded form in URLs or request payloads. Learn more in our documentation on [Dynamic Secret Scrubbing](https://www.checklyhq.com/docs/platform/dynamic-secret-scrubbing.md) **v6.1.1** Fixed an issue where checks could fail behind proxies during dependency installation because proxy-related environment variables were not consistently available **v6.1.0** * Added runtime secret detection for Browser and Multistep checks (enabled for selected accounts) * See the [product changelog](https://feedback.checklyhq.com/changelog/checkly-agent-610-playwright-check-suites-and-more) for details on changes from version 6.0.1 to 6.1.0 **v6.0.7** Internal improvements and fixes related to networking and request handling This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.