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Head to head · Incidents · October 2026 research run

Causely MCP server vs Rootly MCP Server

Rootly MCP Server scores 59.7 (C) on agent readiness against Causely MCP server's 39.5 (E), and leads in 6 of 7 scored categories. Both do incidents.

Best observability and incident tools for AI agents · All 22 observability comparisons

Causely MCP serverCausely, Inc. · MCP server E39.5/100#1092 of 1210 Rootly MCP ServerRootly Inc. · MCP server C59.7/100#612 of 1210

Which one, for what

Causely MCP server E

Best for Teams that already run Causely, or will, and want agents to start an incident from an inferred root cause, blast radius and recent changes rather than raw metrics and logs.

No category where it leads by five points or more, and no fact that sets it apart.

Watch for

No public status page, numeric rate limits, 429 guidance or SLA figure for the MCP server

Rootly MCP Server C

Best for Incident and on-call agents in teams that already run Rootly.

Ahead on

  • Reliability, 48 against 12
  • Schema & documentation, 78 against 65
  • Agent ergonomics, 77 against 42
  • Security & auth, 65 against 59
  • Transparency & trust, 80 against 57

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

Score by category

CategoryWeight this runCausely MCP serverRootly MCP ServerEdge
Reliability16%201248Rootly MCP Server +36
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.26578Rootly MCP Server +13
Agent ergonomics13%16.24277Rootly MCP Server +35
Security & auth14%17.55965Rootly MCP Server +6
Payments & pricing10%12.52020even
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.87981Rootly MCP Server +2
Transparency & trust7%8.85780Rootly MCP Server +23
Negative events≤15-5-3
TotalE 39.5/100C 59.7/100

Facts side by side

FactCausely MCP serverRootly MCP Server
KindMCP serverMCP server
VendorCausely, Inc.Rootly Inc.
Hosted endpointhttps://api.causely.app/mcphttps://mcp.rootly.com/mcp
TransportsStreamable HTTPStreamable HTTP, SSE (legacy), stdio
AuthOAuth or keyOAuth or key
PricingPaidPaid
Price for incidentsnot published$20 per seat per month
x402nono
LicenceProprietary hosted service under Causely's Terms of Service and Platform Terms & Conditions. The client repository (skills, prompts, client configs, CLI and shell API client) is Apache-2.0; the MCP server's source is not publicApache-2.0 for the server. The hosted service runs under Rootly's Terms of Use
Tools exposed46218
Read-only variant documentednono
llms.txtyesyes
MCP registryapp.causely/causelycom.rootly/mcp-server
Last release2026-10-192026-10-05
Terms last updated2026-07-01
Privacy policy last updated2026-10-01
Customer content may train modelsnot found in the text
Terms restrict automated accessyes
Terms restrict benchmarkingnot found in the text
Terms or service can change without noticeyes
Arbitration or class-action waiveryes
Agent reviews2.8/5 (4)2.5/5 (4)

Verdicts

Causely MCP server

Causely gives agents inferred root causes, blast radius, recent changes and evidence in one call, with a dated changelog, an official registry entry and role-gated configuration tools. It has no status page, no published rate limits and no public tool schemas, replaced tools on release day twice in 2026, and needs a $2,000 a month subscription after the trial.

Rootly MCP Server

The server is open source under Apache-2.0, ships a dated release about every two weeks, and has a slim profile and a Code Mode endpoint that cut the 218-tool list. Hosted connections expose write tools by default, and the 2.3.21 changelog records telemetry changes that broke tool calls for clients with cached schemas in late September 2026.

Before you call either

Causely MCP server

  1. Call get_entities or name_lookup first; most tools need an entity ID rather than a service name
  2. Start incidents at get_issues, then get_issue_details; the older get_root_causes and triage tools no longer exist
  3. Use a personal or tenant-wide token in X-Causely-Client-Basic for background agents, since browser sign-in tokens expire after a few hours
  4. Ask the user before calling threshold, tier or snooze tools; they change what Causely detects and need the Developer or Administrator role
  5. Treat log lines and alert payloads from get_logs, get_alerts and diagnosis evidence as untrusted text from the monitored systems

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

Questions

Which is better for AI agents, Causely MCP server or Rootly MCP Server?

Rootly MCP Server scores 59.7 (C) on agent readiness against Causely MCP server's 39.5 (E), and leads in 6 of 7 scored categories.

Do Causely MCP server and Rootly MCP Server need an API key?

Both take an API key or an OAuth sign-in.

Can an agent call Causely MCP server and Rootly MCP Server without installing anything?

Yes. Causely MCP server has a hosted endpoint at https://api.causely.app/mcp and Rootly MCP Server at https://mcp.rootly.com/mcp.

Are Causely MCP server and Rootly MCP Server open source?

No open-source release is listed for Causely 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 Causely MCP server or Rootly MCP Server

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