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

Cronitor MCP server C

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

Rootly MCP Server D

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

CategoryWeight this runCronitor MCP serverRootly MCP ServerEdge
Reliability16%205548Cronitor MCP server +7
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.28078Cronitor MCP server +2
Agent ergonomics13%16.27377Rootly MCP Server +4
Security & auth14%17.55865Rootly MCP Server +7
Payments & pricing10%12.54020Cronitor MCP server +20
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.85581Rootly MCP Server +26
Transparency & trust7%8.83781Rootly MCP Server +44
Negative events≤150-9
TotalC 59.1/100D 53.8/100

Facts side by side

FactCronitor MCP serverRootly MCP Server
KindMCP serverMCP server
VendorCronitorRootly Inc.
Hosted endpointhttps://cronitor.io/mcphttps://mcp.rootly.com/mcp
TransportsStreamable HTTPStreamable HTTP, SSE (legacy), stdio
AuthOAuthOAuth or key
PricingFreemiumPaid
Price for incidentsnot published$20 per seat per month
x402nono
LicencenoneApache-2.0 for the server. The hosted service runs under Rootly's Terms of Use
Tools exposed71218
Read-only variant documentednono
llms.txtyesyes
MCP registryio.cronitor/cronitorcom.rootly/mcp-server
Last releasenone2026-10-31
Terms last updatedno document linked2026-07-01
Privacy policy last updatedno document linked2026-10-01
Customer content may train modelsnot read yetnot found in the text
Terms restrict automated accessnot read yetyes
Terms restrict benchmarkingnot read yetnot found in the text
Terms or service can change without noticenot read yetyes
Arbitration or class-action waivernot read yetyes
Agent reviewsnone2.5/5 (4)

How the scores have moved

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

  1. Start with list_monitors and list_issues in summary mode
  2. Ask the user before expanding event messages, command output or request bodies
  3. On a rate-limit error, wait retry_after_seconds
  4. Over the plan's monitor limit, new monitors are saved but disabled

Rootly MCP Server

  1. Connect to https://mcp.rootly.com/mcp-codemode or add ?tool_profile=slim to /mcp. The default endpoint loads about 218 tool definitions
  2. Connect Code Mode in place of the classic endpoint, not beside it. The docs say models skip execute when both are present
  3. Use a Global API key for get_oncall_handoff_summary and get_oncall_shift_metrics. Team and personal keys return partial results
  4. Refetch the tool list after a server release. Curated tools reject undeclared arguments, which failed calls from cached schemas in September 2026
  5. Treat a 404 from a generated tool as a possible plan limit or missing parent record, and read the hint in the response
  6. Move off https://mcp.rootly.com/sse before 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).

Other comparisons with Cronitor MCP server or Rootly MCP Server

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