LaunchDarkly
Powered by JAIRF v1.0.0 by Jentic · open methodology at /the-headless-index/methodology
LaunchDarkly earns Band B in the Feature Flags & Config category of The Headless Index, with a thesis-fit score of 84/100 and a JAIRF rating of 66.2/100 (AI-Aware). Its strongest dimension is API-first design intent (20/20); its weakest scored dimension is MCP and agent posture (12/20). LaunchDarkly publishes a machine-readable OpenAPI specification, which is what lets an agent discover and operate it without human glue code.
Scorecard detail
LaunchDarkly is the feature-flag and experimentation category leader. REST API plus comprehensive SDKs (Node, Python, Ruby, Java, Go, PHP, .NET, iOS, Android, JavaScript, Roku, and more). The API covers flags, segments, projects, environments, audit logs, and approvals.
signals (5)
- +AI review appliedReviewer: Editorial review on 2026-05-20
- +OpenAPI specPublished, 0 operations
- −GraphQL endpointNot discovered (0 probes; project-scoped endpoints require a real project ID)
- +SDKs maintained30 (dotnet, go, java, javascript, php, python, ruby, rust, swift, typescript); top by stars: launchdarkly/js-client-sdk (121 stars)
- +npm weekly downloads3.8M across published packages; top: @launchdarkly/js-sdk-common @ 2.2M/week
cite (1)
- github.sdks@2026-05-19
Flags, segments, environments, members, teams, projects, custom roles, and audit logs are all programmable. The ld CLI plus a Terraform provider give shell and IaC paths. Reference-class for feature-flag operability.
signals (9)
- +AI review appliedReviewer: Editorial review on 2026-05-20
- −API operations exposedOpenAPI present but operations could not be counted
- ·Docs pages crawled0 pages (crawler: none)
- ·Auth schemes documentedAuth documentation page not reached by crawler
- ·Setup / quickstart docsNot reached by crawler
- ·Billing docsNot reached by crawler
- ·Teams / org docsNot reached by crawler
- ·CLI docsNot reached by crawler
- ·Schema / data model docsNot reached by crawler
cite (1)
- github.sdks@2026-05-19
LaunchDarkly has been publicly active on MCP integration. The launchdarkly/mcp-server-launchdarkly project provides first-party MCP access to flags and feature configuration.
signals (4)
- +AI review appliedReviewer: Editorial review on 2026-05-20
- +Official MCP serverhttps://github.com/launchdarkly/mcp-server (21 stars, last commit 93 days ago)
- −Community MCP serversNone found
- +Agent-friendly SDKs7 TS/JS SDKs available; top: @launchdarkly/js-client-sdk (130.7k/week downloads)
cite (1)
- github.sdks@2026-05-19
LaunchDarkly publishes OpenAPI specifications. SDKs are generated from them. Schema discoverability is reference-class for feature flags.
signals (3)
- +AI review appliedReviewer: Editorial review on 2026-05-20
- +OpenAPIPublished at https://api.apis.guru/v2/specs/launchdarkly.com/5.3.0/swagger.yaml (OpenAPI undefined, 0 operations)
- −GraphQL introspectionNo GraphQL endpoint discovered (0 probes; some vendors use project-scoped endpoints that require a real project handle)
cite (1)
- github.sdks@2026-05-19
LaunchDarkly webhooks deliver flag, environment, project, and team events with HMAC signing. Catalog is comprehensive.
signals (2)
- +AI review appliedReviewer: Editorial review on 2026-05-20
- ·Webhook docs pageNot reached by crawler within budget (0 pages crawled). Cannot confirm whether vendor offers webhooks.
cite (1)
- github.sdks@2026-05-19
FCFoundational Compliance70/100
Structural validity, standards conformance, and parsability of the OpenAPI specification.
DXJDeveloper Experience & Tooling Compatibility47.7/100
Documentation clarity, example coverage, response completeness, and ingestion health.
ARAXAI-Readiness & Agent Experience40/100
Semantic clarity, intent expression, datatype specificity, and error standardization.
AUAgent Usability99.2/100
Operational composability, complexity comfort, navigation affordances, and safety patterns.
SECSecurity65/100
Authentication strength, transport security, secret hygiene, and OWASP risk posture.
AIDAI Discoverability74.6/100
Descriptive richness, intent phrasing, workflow context, and registry signals.
Band rationale:B band: JAIRF=66.2 HeadlessIndex=84
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How THI compares to external scorers
| Source | Score | Measures | Last checked |
|---|---|---|---|
| Fern Agent Score | not found | Documentation completeness and SDK shape (~22 checks) | — |
| CLIRank Agent Friendliness | 84 · Good | CLI readiness, docs quality, and overall agent affordances | — |
| Cloudflare Is It Agent Ready? | blocked | Cloudflare's manual agent-readiness heuristic per vendor URL | — |
| Jentic Scorecard | n a | JAIRF-based scorecard requiring a public OpenAPI specification | — |
THI display 84 vs external median 84 (delta +0). Within calibration band.
LaunchDarkly and agent readiness
- Is LaunchDarkly agent-ready?
- LaunchDarkly scores Band B on The Headless Index and rates AI-Aware on JAIRF (66.2/100). Its strongest area for agent use is API-first design intent; its weakest is MCP and agent posture.
- Does LaunchDarkly publish an OpenAPI spec?
- Yes. LaunchDarkly publishes an OpenAPI specification, scored under JAIRF v1.0.0. A published spec is what makes an API discoverable and callable by agents rather than only by developers reading docs.
- What is LaunchDarkly's Headless Index score?
- LaunchDarkly scores 84/100 on the Headless Index thesis-fit rubric and sits in Band B in the Feature Flags & Config category. The score weighs API-first design, headless operation, MCP and agent posture, schema observability, and webhooks.