MCP tools

Overview

The d6e instance MCP server (default :8081/mcp) exposes the same surface as the built-in chat. With an API key, local AI agents (Cursor / Claude Code / Codex, and others) can run workspace SQL, STFs, workflows, embedding search, and more.

For connection steps, environment variables, and troubleshooting, see Local AI development.

Connection example

Cursor — .cursor/mcp.json:

{
  "mcpServers": {
    "d6e": {
      "url": "http://<instance-host>:8081/mcp",
      "headers": { "Authorization": "Bearer d6e_YOUR_API_KEY" }
    }
  }
}

After connecting, call d6e_list_workspaces then d6e_set_workspace before other tools.

Tools by category

Health / Workspace Context

Tool	Description
`d6e_health`	Check API server connectivity
`d6e_set_workspace`	Set the workspace ID used by subsequent operations
`d6e_get_current_workspace`	Return the currently selected workspace ID

Workspaces / Members

Tool	Description
`d6e_list_workspaces`	List workspaces accessible to this API key
`d6e_get_workspace`	Get workspace details (name, policy groups, etc.)
`d6e_create_workspace`	Create a new workspace
`d6e_update_workspace`	Update workspace settings (name, policies, custom prompt, etc.)
`d6e_delete_workspace`	Soft-delete a workspace
`d6e_list_workspace_members`	List workspace members
`d6e_add_workspace_member`	Add a member (admin / member)
`d6e_update_workspace_member`	Change a member’s role
`d6e_remove_workspace_member`	Remove a member

SQL

Tool	Description
`d6e_sql`	Execute SQL in the workspace (DDL, SELECT, INSERT, and more)

Embeddings

File and table-row embeddings are asynchronous. Follow EMBED → STATUS → SEARCH: start embedding, poll until complete, then search.

Tool	Description
`d6e_generate_embeddings`	Generate vector embeddings for a TEXT column (synchronous)
`d6e_similarity_search`	Semantic similarity search over column embeddings (synchronous)
`d6e_embed_files`	Start file embedding (asynchronous)
`d6e_file_embedding_status`	Check file embedding progress and status
`d6e_search_files`	Search embedded files by content similarity
`d6e_regenerate_file_embeddings`	Force re-generate file embeddings
`d6e_embed_table_rows`	Start table-row embedding (asynchronous)
`d6e_table_row_embedding_status`	Check table-row embedding progress and status
`d6e_search_table_rows`	Cross-table semantic search over embedded rows
`d6e_regenerate_table_rows`	Force re-generate table-row embeddings

Workflows

Tool	Description
`d6e_list_workflows`	List workflows in the workspace
`d6e_get_workflow`	Get a workflow definition (STF / Effect steps, etc.)
`d6e_create_workflow`	Create a workflow with STF and Effect steps
`d6e_update_workflow`	Update an existing workflow
`d6e_delete_workflow`	Soft-delete a workflow
`d6e_execute_workflow`	Execute a workflow with input data

STFs / Libraries

Tool	Description
`d6e_list_stfs`	List State Transition Functions (STFs)
`d6e_get_stf`	Get STF metadata
`d6e_create_stf`	Create an STF with JavaScript / WASM (or other) code
`d6e_update_stf`	Update STF metadata (name, description, public flag)
`d6e_delete_stf`	Soft-delete an STF
`d6e_list_stf_versions`	List versions of an STF
`d6e_create_stf_version`	Add a new code version to an existing STF
`d6e_instant_run_stf`	Run an STF immediately without creating a workflow
`d6e_describe_stf`	Discover a Docker STF’s input_schema and operations
`d6e_list_stf_libraries`	List libraries importable from STF code
`d6e_get_library_types`	Get TypeScript type definitions (.d.ts) for an STF library

Effects

Tool	Description
`d6e_list_effects`	List Effects (external HTTP calls)
`d6e_get_effect`	Get Effect metadata
`d6e_create_effect`	Create a new Effect
`d6e_update_effect`	Update Effect metadata
`d6e_delete_effect`	Soft-delete an Effect
`d6e_list_effect_versions`	List versions of an Effect
`d6e_create_effect_version`	Add a new HTTP configuration version to an Effect

Policies / Policy Groups

Tool	Description
`d6e_list_policies`	List row-level access policies
`d6e_get_policy`	Get a policy definition
`d6e_create_policy`	Create a policy for a table operation
`d6e_update_policy`	Update an existing policy
`d6e_delete_policy`	Soft-delete a policy
`d6e_list_policy_groups`	List policy groups
`d6e_get_policy_group`	Get a policy group (user / STF members)
`d6e_create_policy_group`	Create a policy group
`d6e_update_policy_group`	Update a policy group
`d6e_delete_policy_group`	Soft-delete a policy group

Storage Files

Tool	Description
`d6e_list_files`	List files in the workspace
`d6e_get_file`	Get file metadata (without content)
`d6e_upload_file`	Upload a file (base64, max 1GB)
`d6e_download_file`	Download file content as base64
`d6e_delete_file`	Soft-delete a file
`d6e_view_image`	Return an image / PDF as visual content for the LLM
`d6e_extract_file_text`	Extract text from Office docs or run OCR on images

Documents

Tool	Description
`d6e_create_document`	Create a Markdown document
`d6e_get_document`	Get document body and metadata
`d6e_list_documents`	List documents (metadata only)
`d6e_update_document`	Update a document (creates a new version on content change)
`d6e_replace_document_section`	Replace a specific text section in a document
`d6e_delete_document`	Soft-delete a document
`d6e_get_document_versions`	Get document version history

Workspace Setup

Tool	Description
`d6e_list_workspace_prompt_rules`	List workspace prompt rules
`d6e_create_workspace_prompt_rule`	Add a rule segment for the system prompt
`d6e_update_workspace_prompt_rule`	Update a prompt rule
`d6e_delete_workspace_prompt_rule`	Delete a prompt rule
`d6e_list_workspace_skills`	List custom Agent Skills
`d6e_create_workspace_skill`	Create a custom Agent Skill
`d6e_update_workspace_skill`	Update a custom Agent Skill
`d6e_delete_workspace_skill`	Delete a custom Agent Skill
`d6e_get_workspace_title_rule`	Get the chat-session title-naming rule
`d6e_set_workspace_title_rule`	Set or update the title-naming rule
`d6e_clear_workspace_title_rule`	Clear the title-naming rule
`d6e_list_workspace_chat_templates`	List chat frontend templates
`d6e_get_workspace_chat_template`	Get a chat template in full
`d6e_create_workspace_chat_template`	Create a chat template
`d6e_update_workspace_chat_template`	Update a chat template
`d6e_delete_workspace_chat_template`	Delete a chat template
`d6e_set_active_workspace_chat_template`	Activate one chat template
`d6e_deactivate_workspace_chat_templates`	Deactivate all chat templates
`d6e_get_workspace_dashboard_enabled`	Get the dashboard visibility setting
`d6e_set_workspace_dashboard_enabled`	Enable or disable the dashboard
`d6e_list_saas_credentials`	List linked SaaS credentials (token values omitted)

SaaS / Drive

Tool	Description
`d6e_call_external_api`	Call an external SaaS API with stored credentials
`d6e_download_external_file`	Download a binary from SaaS into workspace storage
`d6e_read_drive_file`	Read a file from the synced Google Drive mirror (with cache)

Audit

Tool	Description
`d6e_list_audit_logs`	List workspace audit logs (who did what, when)

Category counts

Category	Count
Health / Workspace Context	3
Workspaces / Members	9
SQL	1
Embeddings	10
Workflows	6
STFs / Libraries	11
Effects	7
Policies / Policy Groups	10
Storage Files	7
Documents	7
Workspace Setup	21
SaaS / Drive	3
Audit	1
Total	96

Local AI development — MCP connection guide
REST API — equivalent HTTP endpoints