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Head to head · Analytics flags · October 2026 research run

Countly vs LaunchDarkly

LaunchDarkly scores 69.2 (B) on agent readiness against Countly's 54.8 (C), and leads in every scored category. Both do analytics flags.

CountlyCountly Ltd · HTTP API C54.8/100#607 of 841 LaunchDarklyCatamorphic, Co. (dba LaunchDarkly) · HTTP API B69.2/100#185 of 841

Which one, for what

Countly C

Good for An agent whose owner runs Countly on its own infrastructure or a dedicated Flex server and wants analytics, crash and remote-config data through MCP with per-category permissions.

Also in its favour

  • Open source

Watch for

No public status page or incident history was found for Flex servers or for mcp.count.ly

LaunchDarkly B

Good for An agent that creates and targets feature flags, runs rollouts and experiments, reads experiment results and cleans up stale flags.

Ahead on

  • Reliability, 64 against 28
  • Schema & documentation, 89 against 75
  • Payments & pricing, 40 against 17
  • Transparency & trust, 80 against 70

Also in its favour

  • Free to start without a card

Watch for

The hosted MCP server lists 141 tools, and no tool filter for it was found in the reviewed documentation

Score by category

CategoryWeight this runCountlyLaunchDarklyEdge
Reliability16%202864LaunchDarkly +36
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.27589LaunchDarkly +14
Agent ergonomics13%16.26669LaunchDarkly +3
Security & auth14%17.56366LaunchDarkly +3
Payments & pricing10%12.51740LaunchDarkly +23
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.88082LaunchDarkly +2
Transparency & trust7%8.87080LaunchDarkly +10
Negative events≤1500
Total54.8 · C69.2 · B

Facts side by side

FactCountlyLaunchDarkly
KindHTTP APIHTTP API
VendorCountly LtdCatamorphic, Co. (dba LaunchDarkly)
Hosted endpointhttps://mcp.count.ly/mcphttps://mcp.launchdarkly.com/mcp/launchdarkly
TransportsHTTP, stdio, Streamable HTTPHTTP, Streamable HTTP, stdio
AuthAPI keyOAuth or key
PricingPaidFreemium
x402nono
LicenceCountly Lite is AGPL-3.0 with added branding terms under Section 7. Enterprise plugins are proprietary. Flex is a hosted service under Countly's terms. The MCP server is MITProprietary service under LaunchDarkly's terms. The local MCP server is MIT and the ldcli CLI is Apache-2.0
Tools exposed209141
Read-only variant documentedyesno
llms.txtyesyes
Last release2026-10-072026-10-06
Terms last updated2026-09-252025-09-08
Privacy policy last updated2026-09-252025-04-08
Customer content may train modelsnot found in the textnot found in the text
Terms restrict automated accessnot found in the textnot found in the text
Terms restrict benchmarkingnot found in the textyes
Terms or service can change without noticeyesnot found in the text
Arbitration or class-action waivernot found in the textnot found in the text
Popularity28k npm/wk3.3M npm/wk, 2.2M PyPI/wk

Verdicts

Countly

Countly suits an agent working against a server its owner already runs. The official MCP server filters its 209 tools by edition, plugin and permission and has per-category read-only settings. No status page, OpenAPI document or published API rate limit was found, and the Flex trial needs a credit card.

LaunchDarkly

LaunchDarkly suits agents that manage feature flags, rollouts and experiments. The hosted MCP server uses OAuth with dynamic client registration and marks its tools read-only or destructive, and the Developer plan is free without a card. The server lists 141 tools, numeric rate limits are unpublished, and the web application was unavailable for over an hour on 10 July 2026.

Before you call either

Countly

  1. Create a dedicated token in the Token Manager, limited to the apps and endpoints the task needs, and send it in the countly-token header, not the URL
  2. Set COUNTLY_TOOLS_ALL=R unless the task needs writes. The token's own permissions still apply and the stricter of the two wins
  3. Call apps_list first. Most tools need app_id or an exact app_name
  4. Check get_version for the detected edition before planning funnel, retention or cohort queries, which need Enterprise plugins
  5. Set ENABLE_ANALYTICS=false to stop usage reports to stats.count.ly, and prefer the stdio server to mcp.count.ly so the server URL and token stay local

LaunchDarkly

  1. Connect to https://mcp.launchdarkly.com/mcp/launchdarkly over streamable HTTP with OAuth. On the EU or federal instance run the local @launchdarkly/mcp-server with --server-url
  2. Authorise with a Reader role or the reader scope unless the task writes. A 403 after consent means the member's role lacks access
  3. Send LD-API-Version: 20240415 on every REST call, and LD-API-Version: beta for beta resources, which answer 403 without it
  4. Read X-Ratelimit-Global-Remaining, X-Ratelimit-Route-Remaining and X-Ratelimit-Reset on each response, and wait Retry-After seconds on an IP limit
  5. Send Content-Type: application/json; domain-model=launchdarkly.semanticpatch for semantic patches, or the body is read as JSON patch and answers 400

Questions

Which is better for AI agents, Countly or LaunchDarkly?

LaunchDarkly scores 69.2 (B) on agent readiness against Countly's 54.8 (C), and leads in every scored category.

Do Countly and LaunchDarkly need an API key?

Countly needs an API key. LaunchDarkly takes an API key or an OAuth sign-in.

Can an agent call Countly and LaunchDarkly without installing anything?

Yes. Countly has a hosted endpoint at https://mcp.count.ly/mcp and LaunchDarkly at https://mcp.launchdarkly.com/mcp/launchdarkly.

Are Countly and LaunchDarkly open source?

Countly is open source (Countly Lite is AGPL-3.0 with added branding terms under Section 7. Enterprise plugins are proprietary. Flex is a hosted service under Countly's terms. The MCP server is MIT). No open-source release is listed for LaunchDarkly.

Other comparisons with Countly or LaunchDarkly

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