Alternatives · Checkly

Checkly alternative for MCP servers

Checkly is the developer-first synthetic monitoring platform — Playwright browser checks for web UIs, multi-step API checks authored in TypeScript, heartbeat checks for crons, public status pages, and a CLI that lets you define every check as code in your repo and deploy it through CI. It's a clean, modern product with a real fit for teams that already think of monitoring as another deploy artifact. The thing it does not do, out of the box, is run an MCP-protocol probe — Checkly's API check is HTTP-with-assertions, and you can hand-author the JSON-RPC envelope as a TypeScript snippet, but you own the maintenance of every assertion you didn't think to write. AliveMCP is the MCP-aware external probe at $9/$49/mo, with a real JSON-RPC initialize + tools/list handshake, tool-list hashing, and registry auto-discovery as defaults. Here is the honest read on which one to pick — and when running both is the right answer.

TL;DR

Checkly is the right primitive when monitoring belongs in your repo alongside the code it monitors — TypeScript-authored API checks, Playwright browser checks for web UIs, GitOps deploy, alert channels declared in code, public status pages that subscribe to those checks. For teams whose existing CI already runs Checkly's checkly deploy on merge, adding MCP checks looks like adding another file. The cost is that the JSON-RPC envelope, the body assertions, the latency thresholds, and the schema-shape comparisons are all things you write and maintain by hand — and the assertion you don't write is the assertion that doesn't catch the regression. AliveMCP starts from the protocol — a real initialize + tools/list handshake every 60 seconds, a tool-list hash that emits an event on any structural change, latency tracked per region, registry auto-discovery so new MCPs are visible the moment they're listed, and public per-server status pages out of the box. Pricing-shape note: Checkly's Hobby tier is free for one user with a small per-check-run quota; Team starts at $80/mo for a defined seat-and-runs envelope; runs scale with check count × cadence. AliveMCP is flat tiers — $9 Author, $49 Team, $299 Enterprise — and the binding question isn't price, it's whether you want monitoring-as-code over generic HTTP or MCP-aware coverage out of the box. The two are usually complementary, not substitutes.

Why MCP authors look for a Checkly alternative

Checkly's API check is HTTP-with-assertions, not MCP-protocol-aware. The product's strongest API primitive is a multi-step request chain authored in TypeScript with body, header, and JSONPath assertions you write yourself. That works the day you write it for the JSON-RPC envelope shape you have in mind. It stops working when the regression ships in a field your assertion didn't name. The April 2026 audit of 2,181 public MCP endpoints found 91% broken at the protocol or tool layer — a meaningful share of those break in shapes (empty tools/list, renamed parameter, dropped required field, protocol-version drift) that an HTTP-with-substring assertion structurally cannot catch unless you predicted the exact shape ahead of time.
Monitoring-as-code is real work, and the work doesn't end at first commit. Checkly's pitch is that the check is a TypeScript file in your repo, reviewable in PRs and deployable through CI. That's genuinely good for the day you set it up and good for the second engineer who has to read what's being monitored. The cost is that every protocol change — every MCP spec revision, every new method, every assertion you should add — is another PR that someone on the team has to write, review, and deploy. AliveMCP keeps protocol coverage in our codebase, not yours; you get the new probe behaviour the day we ship it, with no PRs on your side.
Per-check-runs pricing scales with cadence and check count. Checkly's Hobby tier is free with 10,000 API check runs and 1,500 browser check runs per month; the Team tier opens at $80/mo with larger envelopes; runs accrue at every check × every cadence × every location. A 60-second cadence on 10 MCP servers from 4 locations is 1.7 million runs a month — well past Hobby and into a custom-sized Team plan. AliveMCP's flat $9 Author / $49 Team / $299 Enterprise tiers don't move when you add a server or tighten cadence, because the cadence and coverage are the product, not the meter.
No concept of the MCP registry. If you ship a new MCP and list it on MCP.so, PulseMCP, Smithery, Glama, or the Official Registry, Checkly doesn't know. Every new server is another checkly.config.ts entry, another PR, another deploy. AliveMCP discovers it from the public registries within 60 minutes of you listing it and starts probing automatically. Third-party MCPs your agent platform pulls in — the supply-chain question — are visible to AliveMCP the moment they appear in the registries; Checkly has no surface for them unless you author a check by hand.
Browser checks (Playwright) are the wrong tool for an MCP endpoint. Half of Checkly's value proposition is the Playwright-based browser-checks product — script a real browser session against your web UI, assert on rendered DOM, screenshot on failure. That's the right primitive for a marketing site or a SaaS dashboard. It is not the right primitive for an MCP endpoint, which has no UI, no DOM, and no rendered visuals to assert on. If your only monitoring need is the MCP, you're paying for the half of the product that doesn't apply.
Public status pages are partial overlap, not a substitute. Checkly's status pages are good for "is the customer-facing surface up." They work check-by-check and you compose them by hand. AliveMCP's /status/<slug> pages exist by default for every public MCP we discover, with no setup, and they roll up MCP-protocol-specific signal (handshake success, tool-list hash, latency-per-region) that a Checkly status page cannot natively express because Checkly doesn't have those primitives.

How AliveMCP is different

The single-sentence difference: Checkly gives you a TypeScript SDK and a CLI to author HTTP / browser / heartbeat checks as code in your repo and deploy them through CI; AliveMCP runs the MCP-protocol probes for you and treats the registry, the handshake, the tool-list hash, and the per-region latency as default behaviour. We send a real JSON-RPC initialize from outside your network every 60 seconds, follow with tools/list, hash the tool schema, measure latency per region, and emit a state-change event the moment any of those break. Auto-discovery from MCP.so, Glama, PulseMCP, Smithery, the Official Registry, and GitHub topic feeds is a default. Tool-list hashing — the structural answer to schema drift — is a default.

The rule of thumb: if your team's monitoring philosophy is "every check belongs in the repo, reviewed in PRs, deployed in CI" and you have the engineering capacity to maintain MCP-protocol assertions in TypeScript, Checkly is a clean home for that work. If you'd rather not own the protocol surface — because the spec moves, the registries are moving targets, and the substring trap is a class of bug you don't want to manage — AliveMCP is the right primitive. Either price is in the noise compared to the cost of finding out from a customer that your MCP has been silently dead for two days.

Feature comparison

	Checkly	AliveMCP
MCP-protocol-aware out of the box	No — TypeScript API check with body assertions at best	Yes — `initialize` + `tools/list` by default
Setup time per server	Hand-authored TS check + assertions + alert channel + CI deploy	Seconds (registry auto-discovery) or paste URL
Auto-discovery from MCP registries	No	Yes — MCP.so / Glama / PulseMCP / Smithery / Official / GitHub
Catches HTTP 200 with empty `tools/list`	Only with an assertion you predicted ahead of time	Yes — tool-list hash diff is a first-class signal
Catches schema drift (renamed param, lost field)	No native primitive — JSONPath only catches what you named	Yes — schema canonicalization + hash diff
Catches protocol-version drift	No native primitive	Yes — protocol-version transitions are tracked events
Browser-UI testing (Playwright)	Yes — strong primitive	No — MCP endpoints have no UI
Monitoring-as-code workflow (PR review, CI deploy)	Yes — first-class	No — managed service, no checks-in-your-repo surface
Public per-server status pages	Composed by hand from selected checks	Default — `/status/<slug>` per MCP
Pricing shape	Per check × cadence × location runs (Hobby free, Team from $80/mo)	Flat tiers ($0 / $9 / $49 / $299)
Best for	Teams committed to monitoring-as-code with engineering capacity to maintain the assertions	MCP protocol coverage at indie-to-team scale, zero-server-config

When Checkly is still the right call

Your monitoring philosophy is "every check belongs in the repo." If your team already runs checkly deploy on merge, requires every monitor to be reviewed in a PR like every other code change, and treats checkly.config.ts as part of the application, then a hand-authored MCP check is a natural fit for that workflow — and a managed service that lives outside your repo is a workflow mismatch even if the protocol coverage is better.
You need browser-UI synthetic checks alongside the MCP. Playwright-based browser checks are genuinely strong, and if your product has a customer-facing dashboard you already monitor with Checkly, adding the MCP as one more API check inside the same platform is the path of least resistance for the dashboard side of your product.
Your fleet is one or two MCPs and the protocol footprint you care about is a small subset of the spec — say the initialize handshake plus a single named tool's argument shape. A hand-authored API check covers that surface fine, and the substring-trap exposure is small because the surface is small.
You already pay for Checkly Team or above and have run-quota headroom. The marginal cost of adding MCP checks to an existing plan is zero until you cross the cadence-and-count threshold; for a team in that position, AliveMCP is additive coverage rather than a replacement.
Heartbeat checks for the MCP's auxiliary crons and worker processes are a real need. Checkly's heartbeat checks are well-designed for long-running scheduled jobs that should ping in on completion; AliveMCP doesn't compete on that surface and we recommend Checkly heartbeats for the cron side of an MCP deployment regardless of which protocol monitor you choose.
Your team's CI environment is the unit of trust for everything that touches production, and a managed service that probes from outside that perimeter requires a procurement / security review you'd rather not run today. Checkly's monitoring-as-code lets you avoid the new-vendor approval cycle entirely; AliveMCP requires a brief review before the first probe.

If none of these apply, you're paying for a TypeScript SDK to maintain MCP assertions you didn't sign up to maintain, and the substring trap is one bug-you-didn't-think-of away from a silent outage.

Run them together

The pattern that works for teams that already have Checkly: keep Checkly for what Checkly is best at — Playwright browser checks against the customer-facing dashboard, heartbeat checks for the MCP's scheduled jobs, custom multi-step API checks against any non-MCP endpoints in the same product — and add AliveMCP for the MCP-protocol layer that Checkly's API check structurally cannot cover without hand-authored assertions you'd have to maintain forever. The two probes ask different questions of different surfaces and don't overlap in any operationally interesting way. Checkly continues to own the dashboard and the cron surface; AliveMCP owns "is the MCP protocol responding correctly to an outside caller and has the tool list drifted." Alert-routing becomes: Checkly browser-and-heartbeat alerts go to the existing application on-call (where they already go), AliveMCP MCP-protocol alerts go to the engineer or team that owns the MCP, and the on-call surfaces stay narrow and high-signal on each side. The combined cost at small-team scale is well under $150/mo even when both products are at their respective Team tiers.

What we hear from teams that switched

"Our Checkly API check stayed green and the MCP returned {\"tools\": []} for two days after a deploy regression." The TypeScript assertion looked for response.body.includes('tools') — which still matched — and nobody had thought to add an assertion on response.body.tools.length > 0. The first AliveMCP probe after the switch caught the empty-tools regression on the next deploy and emitted a state-change event before the customer noticed.
"The team got tired of writing a new TypeScript check every time we shipped a new MCP." Three new MCPs in a quarter is three more checkly.config.ts entries, three more PRs, three more reviews, three more deploys, and three more sets of assertions to maintain. AliveMCP picks up new servers from the registries automatically and the team gets back the engineering hours that used to go into writing checks.
"We were on the Team plan and run quota turned out to be the binding constraint." Tightening cadence from 5 minutes to 60 seconds on a small fleet pushed run consumption past the plan envelope; AliveMCP's flat $49/mo Team tier covered the same fleet at the same cadence without a meter to watch.
"We pulled in two third-party MCPs for our agent and didn't want to author Checkly checks for servers we don't run." AliveMCP probes any public MCP regardless of ownership; the registry-listed third-party MCPs your agent depends on are visible the moment they appear in MCP.so or Glama, with no checks-in-your-repo work to maintain.

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