Estuary Flow MCP by usefulapi
Inspect Estuary Flow captures, materializations, collections and stats.
Connect it
Settings → Connectors → Add custom connector
URL: https://estuary-flow.usefulapi.io/mcpSettings → Apps & Connectors → Advanced → Developer mode
Create connector with URL: https://estuary-flow.usefulapi.io/mcp{
"mcpServers": {
"estuary-flow": {
"url": "https://estuary-flow.usefulapi.io/mcp"
}
}
}claude mcp add --transport http estuary-flow https://estuary-flow.usefulapi.io/mcp{
"servers": {
"estuary-flow": {
"type": "http",
"url": "https://estuary-flow.usefulapi.io/mcp"
}
}
}15 tools, verified live
estuary_list_catalogread-onlyList live catalog entities (captures, collections, materializations, tests) the user can read, with connector + last-publication metadata. Optionally filter by a catalog-name prefix and spec_type. Estuary control-plane view live_specs_ext. PostgREST: GET /live_specs_ext.
estuary_get_catalog_specread-onlyGet one live catalog entity by its exact catalog_name, including the full serialized `spec` and compiled `built_spec`. Estuary control-plane view live_specs_ext. PostgREST: GET /live_specs_ext?catalog_name=eq.<name>&limit=1.
estuary_get_catalog_statsread-onlyGet usage/throughput stats for one catalog entity — bytes & docs read/written (both directions), usage_seconds, warnings/errors/failures, and txn_count — per time grain. Optionally bound by a timestamp range. Estuary control-plane view catalog_stats. PostgREST: GET /catalog_stats.
estuary_list_connectorsread-onlyList the connector catalog — available capture/materialization Docker connectors, with titles, descriptions, and logos. Optionally filter to recommended connectors. Estuary control-plane table connectors. PostgREST: GET /connectors.
estuary_list_connector_versionsread-onlyList available versions (image tags) of connectors, with protocol and documentation URL. Optionally filter by connector_id. Estuary control-plane table connector_tags. PostgREST: GET /connector_tags.
estuary_list_draftsread-onlyList the user's draft workspaces (staging areas for catalog edits before publishing). Estuary control-plane table drafts. PostgREST: GET /drafts.
estuary_list_draft_specsread-onlyList the staged spec entries within a draft (each an insert/replace of a catalog entity pending publication). Estuary control-plane table draft_specs. PostgREST: GET /draft_specs.
estuary_list_publicationsread-onlyList publication history/status — each publish attempt of a draft; job_status carries the queued/success/failed outcome. Estuary control-plane table publications. PostgREST: GET /publications.
estuary_list_discoversread-onlyList connector discovery jobs (auto-detecting bindings/resources for a capture). Estuary control-plane table discovers. PostgREST: GET /discovers.
estuary_list_rolesread-onlyList the roles/capabilities the current credential is granted — which catalog prefixes it can read/write/admin. Read-only RPC. Estuary control-plane: POST /rpc/auth_roles.
estuary_get_tenantread-onlyGet the user's tenant(s) — quotas (tasks/collections), billing tiers, recurring charge, trial start, and payment provider. Estuary control-plane table tenants. PostgREST: GET /tenants.
estuary_view_task_logsread-onlyFetch the log lines for a job by its logs_token (a UUID found on a publication, discover, or connector-tag record). Optionally page from a last-seen timestamp. Read-only RPC. Estuary control-plane: POST /rpc/view_logs.
estuary_create_draftcan modifyWRITE: create a new empty draft workspace (a staging area for catalog changes; does not affect live pipelines). Estuary control-plane: POST /drafts. Returns the created row.
estuary_upsert_draft_speccan modifyWRITE: stage (insert or replace) a catalog spec inside a draft. Edits only the draft — live pipelines are unaffected until the draft is published. Estuary control-plane: POST /draft_specs (upsert on draft_id,catalog_name). Returns the staged row.
estuary_publish_draftcan modifyWRITE (DESTRUCTIVE when dry_run=false): publish a draft. dry_run=true (default) only VALIDATES the draft without changing anything. dry_run=false APPLIES the draft to the LIVE catalog — this can create, modify, or DELETE running data pipelines and their data. Set dry_run=false only when you intend to change live infrastructure. Estuary control-plane: POST /publications. Returns the publication row
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