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VectorStep Service MCP

An MCP server that exposes VectorStep — pipeline authoring, run inspection, and analytics — to MCP clients such as Claude Code and Claude Desktop.

What it is

A separate, standalone repository and process with no import-level dependency on VectorStep — the two are coupled only over HTTP, so each can be developed, versioned, and deployed independently.

It lets an MCP client create and edit pipelines and step-library definitions (with the same validation VectorStep itself uses), inspect runs and steps, answer operational and quality questions, and trigger runs or submit human feedback. Agents are not authored here — that's the job of the companion VectorStep-Gateway-MCP; this server may only read agents, to help author pipelines that reference them.

Quick start

python3 -m venv .venv
.venv/bin/pip install -e .

CI runs this repo's test suite on every push and pull request (.github/workflows/tests.yml).

Then register it with your MCP client, pointing at a running VectorStep instance:

claude mcp add vectorstep-service \
  --env VECTORSTEP_BASE_URL=http://127.0.0.1:8000 \
  -- /absolute/path/to/VectorStep-Service-MCP/.venv/bin/python -m vectorstep_service_mcp

Full install, client config (Claude Code, Claude Desktop, MCP Inspector), and tool inventory: MCP servers.

Documentation

Full docs at vectorstep.io:

Section Covers
MCP servers Install, client config, tool inventory, explain tool, write-path design notes for both MCP servers
Pipelines The pipeline/step schema this server authors against

The ecosystem

Repo Role
VectorStep The orchestration service: webhook intake, pipeline runner, trust gating, UI, analytics
VectorStep-Gateway WebSocket gateway that runs agents: LLM providers, MCP tools, the full agentic loop
VectorStep-Service-MCP MCP server exposing pipeline authoring, run inspection and analytics to Claude Code/Desktop
VectorStep-Gateway-MCP MCP server for authoring and inspecting Gateway agents

Licence

VectorStep Service MCP is proprietary software, free to download and use under the terms in LICENSE. It's installable from PyPI — that's the Licensor's own distribution channel, not a grant for you to redistribute it further — and this GitHub repository is private.

Bug reports, questions, and feature requests are welcome at contact@vectorstep.io. Code contributions are not accepted — see clause 6 of the licence. For a suspected vulnerability, follow SECURITY.md rather than emailing the address above.

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