mcp-server-plugin
Provides a server-side MCP (Model Context Protocol) interface for Jenkins, exposing Jenkins jobs/builds and related operations as MCP tools via multiple HTTP-based transport endpoints (SSE, streamable HTTP, and stateless HTTP).
Score Breakdown
⚙ Agent Friendliness
🔒 Security
Transport security depends on deployment (examples include http for streamable/stateless but generally HTTPS should be used in practice; TLS enforcement not explicitly guaranteed by docs). Auth uses Jenkins API tokens over Basic auth; this is reasonably common but not scoped at an MCP-tool granularity (permissions follow the Jenkins user). README warns that Base64 is not encryption. Origin-header validation is optional and disabled by default, which may broaden exposure depending on network controls. Log volume is limited to a configurable max, reducing some risk of excessive data transfer/response size.
⚡ Reliability
Best When
You operate Jenkins internally (or behind a gateway/VPN) and want MCP clients to interact with Jenkins tools over HTTP transports.
Avoid When
You cannot protect Jenkins API tokens/credentials or cannot control origins/headers (the plugin allows optionally relaxing Origin validation), or you need strict rate-limit/usage guarantees that are not documented for the MCP layer.
Use Cases
- • LLM/AI agents querying Jenkins for job/build status and metadata
- • Triggering Jenkins builds with parameters from an MCP client
- • Retrieving and searching Jenkins build logs via MCP tools
- • Integrating IDE/agent tooling (e.g., Copilot-like MCP clients) with Jenkins job browsing and SCM info
Not For
- • Internet-facing deployments without strong network controls (since credentials are required and endpoints can be long-lived with SSE)
- • Use cases requiring a standardized SaaS billing/pricing model or hosted API; this is a Jenkins plugin
- • Workflows that require fine-grained OAuth-style scopes beyond Jenkins permissions (auth maps to Jenkins user/token)
Interface
Authentication
Authentication is the same as Jenkins instance auth. The README describes using Jenkins personal access tokens via HTTP Basic auth. Optional Origin-header validation can be enabled via system properties, but by default it may be relaxed to support agents that omit the header.
Pricing
No pricing model described; as a Jenkins plugin, costs depend on Jenkins infrastructure and usage.
Agent Metadata
Known Gotchas
- ⚠ Some MCP transports may have client compatibility quirks (README notes Copilot does not work well with streamable transport; suggests using SSE).
- ⚠ Stateless vs session-based transports can affect how clients manage connections and state.
- ⚠ Origin header validation is not enforced by default; if a client does not send Origin, deployments that enable strict Origin validation may reject requests.
- ⚠ Large log retrieval is limited via a system property (BuildLogsExtension.limit.max); agents should be prepared for truncated/limited logs.
Alternatives
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Scores are editorial opinions as of 2026-03-30.