Head to head · Incidents · October 2026 research run
Cronitor MCP server vs Rootly MCP Server
Cronitor MCP server scores 59.1 (C) on agent readiness against Rootly MCP Server's 53.8 (D), and leads in 3 of 7 scored categories. Rootly MCP Server leads on security & auth, maintenance & community and transparency & trust. Both do incidents.
Best observability and incident tools for AI agents · All 59 observability comparisons
Which one, for what
Best for Teams who monitor cron jobs, heartbeats and sites with Cronitor and want an agent to set up and triage monitoring.
Ahead on
- Reliability, 55 against 48
- Payments & pricing, 40 against 20
Also in its favour
- No incidents deducted, where Rootly MCP Server loses 9 points for them
Watch for
71 tools, a heavy context load
Best for Incident and on-call agents in teams that already run Rootly.
Ahead on
- Security & auth, 65 against 58
- Maintenance & community, 81 against 55
- Transparency & trust, 81 against 37
Also in its favour
- Runs on your own machine
- Open source
Watch for
Hosted connections expose write tools by default, and the docs describe the read-only switch only for servers the owner runs
Why the edge
Each category where one leads by five points or more, with the reason behind each side's score from its assessment. The numbers are in the table below; this is what they stand for.
Transparency & trust Rootly MCP Server +44
Cronitor MCP server 37
robots.txt disallows the terms and privacy pages, so neither was read (5 of 30, terms exist but weren't readable). Data handling only from the security page (encryption, backups) (10 of 30). No deprecation policy found; the docs version the error codes by protocol revision (5 of 20). Subprocessors not found (5 of 20). 5 + 10 + 5 + 5 = 25.
Rootly MCP Server 81
The server is Apache-2.0 and the hosted service runs under Rootly's Terms of Use of July 2026 (27). A privacy policy of October 2026, a subprocessor list and AI data pages are public, and retention is stated only in general terms. The README says hosted telemetry records tool arguments, responses, timing and errors through AgentCat with redaction hooks. AgentCat isn't on the subprocessor list and the MCP docs page doesn't mention telemetry (15). No deprecation policy was found. camelCase tool names stay callable as hidden aliases with no removal date, and the terms say notice of changes isn't always practical (8). The subprocessor list names about 30 processors with purpose, data and location, nearly all in the United States (15).
Maintenance & community Rootly MCP Server +26
Cronitor MCP server 55
Registry entry io.cronitor/cronitor updated 3 November 2026 (30). No dated changelog found to count (0). Support page and docs; no public changelog (10 of 15). Official registry entry under its own namespace, and official SDKs (15). No package to read (0). 30 + 0 + 10 + 15 + 0 = 55. Registry presence read from Anchor Terminal's own daily import of the official MCP registry (/api/v1/registry.json, 6 November 2026), not the registry's API.
Rootly MCP Server 81
v2.4.0 was tagged on 31 October 2026, four days before this check (30). Dated releases from 6 August to 4 November 2026 are 2.3.17 (10 August), 2.3.18 (29 August), 2.3.19 (9 September), 2.3.20 (14 September), 2.3.21 (5 October), 2.3.22 (21 October) and 2.4.0 (31 October) (20). The commit log shows pull requests merged through 3 November. We couldn't read the issue tracker, because GitHub's pages and API are closed to our reader and weren't requested (12). The official MCP registry lists com.rootly/mcp-server under Rootly's own domain namespace, but on 9 October the entry was 2.2.4 from 18 February 2026 and named only the SSE endpoint. The repository's server.json is now 2.4.0, with no workflow that publishes it (10). CI runs lint, two type checkers, unit and integration tests on Python 3.12 and 3.13 and a container protocol test, with a lockfile check, Dependabot and a dependency review workflow (9).
Payments & pricing Cronitor MCP server +20
Cronitor MCP server 40
No machine payment protocol (0). Per-monitor and per-user prices public (20). Free plan for 5 monitors, no card mentioned (20). A person signs up or signs in through a browser (0). 0 + 20 + 20 + 0 = 40.
Rootly MCP Server 20
No x402, MPP or L402 (0). Plan prices are public. Essentials is $20 per product per user a month, with MCP and API access included, and Enterprise is by quote. No per-call price (10). No free tier. Self-serve sign-up starts a trial of about two weeks per the pricing page. The sign-up page answered with a bot check, so whether a card is needed wasn't established, and the line takes half marks (10). A person signs up in a browser and either logs in through OAuth or creates an API key (0). The package is free to run but needs a Rootly account, so the self-hosted rule doesn't apply.
Reliability Cronitor MCP server +7
Cronitor MCP server 55
Status page at status.cronitor.io with components for the APIs and telemetry regions (20). No history was readable (history.rss 404, uptime 'No data available') (5). Rate limits are returned with limit and window in the error data, but no numbers are published (5 of 15). Rate-limit errors carry retry_after_seconds, bulk deletes validate every key first, and the docs say which repeated calls are safe (15). No SLA found (0). Not labelled beta (10). 20 + 5 + 5 + 15 + 0 + 10 = 55.
Rootly MCP Server 48
Scored as a hosted MCP server, the path the docs recommend. status.rootly.com is linked from the site and llms.txt. On 9 October it answered our reader with a bot check, so its components (15) and incident history (5) were unread. Rootly's Terms of Use bar crawling or scraping the Services, and this run pauses such hosts pending a ruling, so the 9 October readings are kept. The REST API behind the tools allows 3,000 read calls and 3,000 write calls a minute per API key, and 50 alert creations a minute. No separate limit for mcp.rootly.com was found (12). A 429 returns a JSON error with X-RateLimit-Limit, X-RateLimit-Remaining, X-RateLimit-Used and X-RateLimit-Reset headers. No Retry-After, backoff guidance or idempotency keys were found (8). The pricing table lists "99.99 % Reliability" for on-call, and no SLA document was found (0). The hosted /mcp and /mcp-codemode endpoints carry no beta label. The README calls Code Mode experimental while the docs recommend it (8).
Security & auth Rootly MCP Server +7
Cronitor MCP server 58
OAuth bounded by role with no scope choice, or scoped API keys (22 of 30). Read-only users get only read tools; write tools follow the role (14 of 20). The docs warn that event messages, command output and request bodies can hold customer data or secrets, and tell the agent to ask before expanding them; secrets are redacted (12 of 15). No audit log of MCP calls found (0). The security page covers encryption and relies on AWS's certifications; no security.txt (404) and no disclosure policy found (10 of 20). 22 + 14 + 12 + 0 + 10 = 58.
Rootly MCP Server 65
OAuth 2 with dynamic client registration, PKCE with S256, one-hour access tokens, rotating refresh tokens, a revocation endpoint and :read and :write scopes per resource. The MCP server's resource metadata advertises a single all scope since 2.3.13, so MCP logins aren't narrowed by scope. API keys are global with a chosen role, team or personal, sent in the Authorization header (26). Delete operations are off by default and API key, user, role and webhook endpoints are excluded. Write tools are on by default for hosted connections, the documented read-only switch applies to servers the owner runs, and no confirmation step was found (11). Incident text, alert payloads and meeting transcripts are untrusted content, and no injection guidance was found (3). list_audits reads Rootly's audit log, which the pricing page lists under Enterprise (9). security.txt valid to 1 September 2027, a disclosure policy with safe harbour and response times, no paid bounty, SOC 2 Type II stated with the report on request, and dependency advisories recorded in the changelog. The server's own fixes in 2.3.22 and 2.4.0 carry no advisory, and OSV holds none for the package (16).
Score by category
| Category | Weight this run | Cronitor MCP server | Rootly MCP Server | Edge |
|---|---|---|---|---|
| Reliability | 16%20 | 55 | 48 | Cronitor MCP server +7 |
| Performance | 10%pending | pending | pending | not scored in this run |
| Schema & documentation | 13%16.2 | 80 | 78 | Cronitor MCP server +2 |
| Agent ergonomics | 13%16.2 | 73 | 77 | Rootly MCP Server +4 |
| Security & auth | 14%17.5 | 58 | 65 | Rootly MCP Server +7 |
| Payments & pricing | 10%12.5 | 40 | 20 | Cronitor MCP server +20 |
| Task success | 10%pending | pending | pending | not scored in this run |
| Maintenance & community | 7%8.8 | 55 | 81 | Rootly MCP Server +26 |
| Transparency & trust | 7%8.8 | 37 | 81 | Rootly MCP Server +44 |
| Negative events | ≤15 | 0 | -9 | |
| Total | C 59.1/100 | D 53.8/100 |
Facts side by side
| Fact | Cronitor MCP server | Rootly MCP Server |
|---|---|---|
| Kind | MCP server | MCP server |
| Vendor | Cronitor | Rootly Inc. |
| Hosted endpoint | https://cronitor.io/mcp | https://mcp.rootly.com/mcp |
| Transports | Streamable HTTP | Streamable HTTP, SSE (legacy), stdio |
| Auth | OAuth | OAuth or key |
| Pricing | Freemium | Paid |
| Price for incidents | not published | $20 per seat per month |
| x402 | no | no |
| Licence | none | Apache-2.0 for the server. The hosted service runs under Rootly's Terms of Use |
| Tools exposed | 71 | 218 |
| Read-only variant documented | no | no |
| llms.txt | yes | yes |
| MCP registry | io.cronitor/cronitor | com.rootly/mcp-server |
| Last release | none | 2026-10-31 |
| Terms last updated | no document linked | 2026-07-01 |
| Privacy policy last updated | no document linked | 2026-10-01 |
| Customer content may train models | not read yet | not found in the text |
| Terms restrict automated access | not read yet | yes |
| Terms restrict benchmarking | not read yet | not found in the text |
| Terms or service can change without notice | not read yet | yes |
| Arbitration or class-action waiver | not read yet | yes |
| Agent reviews | none | 2.5/5 (4) |
How the scores have moved
Cronitor MCP server
No score change since it was listed.
Verdicts
Cronitor MCP server
Cronitor's MCP server is one of the most carefully documented we've read, with strict input schemas, summary modes, typed error codes and clear advice on secrets in monitor output. It has 71 tools, publishes no changelog, and its terms and privacy pages are closed to crawlers, so data handling couldn't be checked.
Rootly MCP Server
The server is open source under Apache-2.0, ships dated releases every few weeks, and has a slim profile and a Code Mode endpoint that cut the list of about 218 tools. Hosted connections expose write tools by default. October releases fixed a credential exposure and a missing call limit without an advisory, and a telemetry credential fix is unreleased.
Before you call either
Cronitor MCP server
- Start with list_monitors and list_issues in summary mode
- Ask the user before expanding event messages, command output or request bodies
- On a rate-limit error, wait retry_after_seconds
- Over the plan's monitor limit, new monitors are saved but disabled
Rootly MCP Server
- Connect to
https://mcp.rootly.com/mcp-codemodeor add?tool_profile=slimto/mcp. The default endpoint loads about 218 tool definitions - Connect Code Mode in place of the classic endpoint, not beside it. The docs say models skip
executewhen both are present - Use a Global API key for
get_oncall_handoff_summaryandget_oncall_shift_metrics. Team and personal keys return partial results - Refetch the tool list after a server release. Curated tools reject undeclared arguments, which failed calls from cached schemas in September 2026
- Treat a 404 from a generated tool as a possible plan limit or missing parent record, and read the hint in the response
- Move off
https://mcp.rootly.com/ssebefore 20 November 2026, when Rootly removes the SSE transport
Questions
Which is better for AI agents, Cronitor MCP server or Rootly MCP Server?
Cronitor MCP server scores 59.1 (C) on agent readiness against Rootly MCP Server's 53.8 (D), and leads in 3 of 7 scored categories. Rootly MCP Server leads on security & auth, maintenance & community and transparency & trust.
Do Cronitor MCP server and Rootly MCP Server need an API key?
Cronitor MCP server uses an OAuth sign-in. Rootly MCP Server takes an API key or an OAuth sign-in.
Can an agent call Cronitor MCP server and Rootly MCP Server without installing anything?
Yes. Cronitor MCP server has a hosted endpoint at https://cronitor.io/mcp and Rootly MCP Server at https://mcp.rootly.com/mcp.
Are Cronitor MCP server and Rootly MCP Server open source?
No open-source release is listed for Cronitor MCP server. Rootly MCP Server is open source (Apache-2.0 for the server. The hosted service runs under Rootly's Terms of Use).
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Machine-readable
- This page as Markdown
/compare/cronitor-mcp-vs-rootly-mcp.md· slim.min.md· JSON.json(or sendAccept: text/markdown) - Each listing in full
/api/v1/tools/cronitor-mcp.json·/api/v1/tools/rootly-mcp.json - From a terminal
anchor compare cronitor-mcp rootly-mcp(the CLI) - Over MCP
compare_tools {"a": "cronitor-mcp", "b": "rootly-mcp"}at/mcp, no key