io.github.cyanheads/mailchimp-mcp-server
Mailchimp via MCP: draft, test, and send campaigns; manage audiences and subscribers; pull reports.
Verdict not yet evaluated for this tool. The semantic screen takes adversarial cases first; coverage rolls out as the corpus expands (15/150 labels to graduation). The deterministic conformance probe is built but has not yet run on the public corpus, so a recorded verdict here is REVIEW or UNVERIFIED, never a clearing ALLOW. Until a verdict is recorded, an agent should treat this tool as not-yet-cleared and fall back to its own checks. Method: the eval, four-state verdict, honest limits.
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MAILCHIMP_API_KEYMailchimp Marketing API key, including the '-dc' data-center suffix (e.g. 'abc...-us22'). Generate at Mailchimp → Account → Extras → API keys.
MAILCHIMP_BASE_URLOverride the API base URL (for mock servers or testing). Defaults to 'https://{dc}.api.mailchimp.com/3.0' derived from the API key suffix.
MAILCHIMP_TIMEOUT_MSPer-request timeout in milliseconds.
MAILCHIMP_MAX_RETRIESMax retry attempts for transient upstream failures (0-10).
MAILCHIMP_CONCURRENCY_LIMITMax in-flight upstream requests per workflow tool (1-10).
MAILCHIMP_ASSETS_DIRAbsolute path to a local assets directory. When set (Node-only — Workers ignored), enables the `mailchimp_assets` tool and auto-uploads `@assets/<path>` references in campaign HTML to Mailchimp File Manager at send time. Cache at <dir>/.mailchimp-cache.json.
MAILCHIMP_TEMPLATES_DIRAbsolute path to a local templates directory. When set (Node-only), enables the `mailchimp_local_templates` tool and support for `content.localTemplate` on campaign tools. Templates are `.eta` files with optional `<name>.meta.yaml` sidecars. Canonical write path on free-tier Mailchimp.
MCP_LOG_LEVELSets the minimum log level for output (e.g., 'debug', 'info', 'warn').
MAILCHIMP_API_KEYMailchimp Marketing API key, including the '-dc' data-center suffix (e.g. 'abc...-us22'). Generate at Mailchimp → Account → Extras → API keys.
MAILCHIMP_BASE_URLOverride the API base URL (for mock servers or testing). Defaults to 'https://{dc}.api.mailchimp.com/3.0' derived from the API key suffix.
MAILCHIMP_TIMEOUT_MSPer-request timeout in milliseconds.
MAILCHIMP_MAX_RETRIESMax retry attempts for transient upstream failures (0-10).
MAILCHIMP_CONCURRENCY_LIMITMax in-flight upstream requests per workflow tool (1-10).
MCP_HTTP_HOSTThe hostname for the HTTP server.
MCP_HTTP_PORTThe port to run the HTTP server on.
MCP_HTTP_ENDPOINT_PATHThe endpoint path for the MCP server.
MCP_AUTH_MODEAuthentication mode to use: 'none', 'jwt', or 'oauth'.
MCP_LOG_LEVELSets the minimum log level for output (e.g., 'debug', 'info', 'warn').
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