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ruv-swarm MCP Server

Neural network swarm orchestration with WebAssembly acceleration and MCP integration

Publisher claimed. No tool list reported, and Pod has not connected to this server.

Status

Pod has not dialled ruv-swarm yet, so everything on this page is what its publisher reported rather than what we observed. Registries describe servers; they do not connect to them. Until a check runs, treat the tool list below as a claim.

Connect

Published as ruv-swarm on npm. Runs locally.

Known issues

10 problems reported by people outside the maintainer team. Issues filed by the project's own owners, members and collaborators are excluded — those are release checklists and internal refactors, not things that will go wrong for you. Showing 7.

Most discussed

[Bug]: Invalid JSON Schema - daa_workflow_create 'steps' array missing 'items' property

Bug Description

The daa_workflow_create MCP tool has an invalid JSON Schema definition that causes errors when used with Claude models. The steps property is defined as an array but is missing the required items property.

Error Message

Invalid schema for function 'ruv-swarm_daa_workflow_create': In context=('properties', 'steps'), array schema missing items.

Root Cause

In ruv-swarm/npm/src/mcp-daa-tools.js, the inputSchema for daa_workflow_create is:


[Read the thread](https://github.com/ruvnet/ruv-FANN/issues/182) · 2026-02-01 · open · external user · 0 comments

### Bug: agent_metrics fails with 'neuralNetworks.map is not a function'

## Bug Description

The `agent_metrics` MCP tool fails with error:

MCP error -32603: MCP tool error: neuralNetworks.map is not a function


## Root Cause

In `src/mcp-tools-enhanced.js`, lines 2445 and 2448 call async methods from `SwarmPersistencePooled` **without `await`**:

```javascript
// Line 2445 - Missing await
const dbMetrics = this.persistence.getMetrics('agent', agent.id);

// Line 2448 - Missing await  
const neuralNetworks = this.persistence.getAgentNeuralNetworks(agent.id);

[Read the thread](https://github.com/ruvnet/ruv-FANN/issues/181) · 2026-01-25 · open · external user · 0 comments

### [BUG] TypeError: agents is not iterable in RUV-Swarm loadSwarms method

# GitHub Issue Content

---

**Title:** [BUG] TypeError: agents is not iterable in RUV-Swarm loadSwarms method

## Bug Description

The RUV-Swarm MCP server crashes with a **TypeError: agents is not iterable** error when attempting to load swarm agents during swarm initialization. This occurs because of a missing `await` keyword when calling the async `getSwarmAgents()` method, causing the code to attempt iteration over a Promise object instead of an array.

## Environment Details

- **Package:*

[Read the thread](https://github.com/ruvnet/ruv-FANN/issues/180) · 2025-11-27 · open · external user · 0 comments

### [BUG] `neural_train` MCP tool called without required `agentId` parameter in tests

# Bug: `neural_train` MCP tool called without required `agentId` parameter in tests

## Description

The `neural_train` MCP tool is being called without the required `agentId` parameter in test files, causing validation errors. The MCP handler correctly validates and rejects these calls with error code -32603.

## Error Details

ruv-swarm:neural_train (MCP) (iterations: 15) Error: MCP error -32603: MCP tool error: agentId is required and must be a string


## Root Cause

The `neural_train

[Read the thread](https://github.com/ruvnet/ruv-FANN/issues/163) · 2025-07-22 · open · external user · 1 comment

### [BUG]

## 🐛 Bug Report

**Description:**
Unable to use ruv-swarm as an MCP tool inside Claude Code

**Steps to Reproduce:**
1. On MacOS install Claude Code using nvm with node 20.0.0
2. Switch Claude Code to local install
3. Log in using a Claude Max account
4. Use local install of ruv-swarm with --claude option
5. Install ruv-swarm using "claude mcp add ruv-swarm npx ruv-swarm mcp start"

**Expected Behavior:**
Type in /mcp and you see ruv-swarm as connected and ready to go

**Actual Behavior:**
Type 

[Read the thread](https://github.com/ruvnet/ruv-FANN/issues/142) · 2025-07-11 · open · external user · 35 comments

### Most recent

### MCP Server stdout pollution prevents JSON-RPC communication

## Issue Description

The `ruv-swarm` MCP server outputs logging messages on stdout, which prevents proper JSON-RPC communication with MCP clients.

## Problem

When running `npx ruv-swarm mcp start`, the server outputs various logs to stdout:

[ERROR] Failed to initialize pooled persistence {...} [ca426a4e...] [INFO] ruv-swarm MCP server starting in stdio mode [ca426a4e...] [INFO] Connection established {...} 🧠 Initializing ruv-swarm with WASM capabilities... ✅ WASM bindings loaded successf

Read the thread · 2025-10-17 · open · external user · 0 comments

[BUG] ruv-swarm MCP server exits or fails after 10s

🐛 Bug Report

Description: ruv-swarm MCP server starts and is supposedly available, but after a short while (less than 30s), it becomes unavailable. it seems like the process exits or stops responding to stdio. Experienced on existing projects, confirmed in isolation on a fresh repo.

Steps to Reproduce:

  1. claude mcp add ruv-swarm npx ruv-swarm mcp start (also tested by building and installing from main rather than npx)
  2. claude
  3. /mcp shows ruv-swarm is connected
  4. wait

Read the thread · 2025-07-12 · closed · external user · 0 comments

See all 10 reports Pod holds for ruv-swarm.

Firsthand observations

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For agents

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