feat: Tool Consolidation - Reduce MCP Tools by 38% (v2.26.0) (#439)

* feat: Remove 9 low-value tools and consolidate n8n_health_check (v2.25.0)

Telemetry-driven tool cleanup to improve API clarity:

**Removed Tools (9):**
- list_nodes - Use search_nodes instead
- list_ai_tools - Use search_nodes with isAITool filter
- list_tasks - Low usage (0.02%)
- get_database_statistics - Use n8n_health_check
- list_templates - Use search_templates or get_templates_for_task
- get_node_as_tool_info - Documented in get_node
- validate_workflow_connections - Use validate_workflow
- validate_workflow_expressions - Use validate_workflow
- n8n_list_available_tools - Use n8n_health_check
- n8n_diagnostic - Merged into n8n_health_check

**Consolidated Tool:**
- n8n_health_check now supports mode='diagnostic' for detailed troubleshooting

**Tool Count:**
- Before: 38 tools
- After: 31 tools (18% reduction)

Concieved by Romuald Członkowski - www.aiadvisors.pl/en

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

* fix: cleanup stale references and update tests after tool removal

- Remove handleListAvailableTools dead code from handlers-n8n-manager.ts
- Update error messages to reference n8n_health_check(mode="diagnostic") instead of n8n_diagnostic
- Update tool counts in diagnostic messages (14 doc tools, 31 total)
- Fix error-handling.test.ts to use valid tools (search_nodes, tools_documentation)
- Remove obsolete list-tools.test.ts integration tests
- Remove unused ListToolsResponse type from response-types.ts
- Update tools.ts QUICK REFERENCE to remove list_nodes references
- Update tools-documentation.ts to remove references to removed tools
- Update tool-docs files to remove stale relatedTools references
- Fix tools.test.ts to not test removed tools (list_nodes, list_ai_tools, etc.)
- Fix parameter-validation.test.ts to not test removed tools
- Update handlers-n8n-manager.test.ts error message expectations

All 399 MCP unit tests now pass.

Conceived by Romuald Członkowski - www.aiadvisors.pl/en

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

* fix: update integration tests to use valid tools after v2.25.0 removal

Replaced all references to removed tools in integration tests:
- list_nodes -> search_nodes
- get_database_statistics -> tools_documentation
- list_ai_tools -> search_nodes/tools_documentation
- list_tasks -> tools_documentation
- get_node_as_tool_info -> removed test section

Updated test files:
- tests/integration/mcp-protocol/basic-connection.test.ts
- tests/integration/mcp-protocol/performance.test.ts
- tests/integration/mcp-protocol/session-management.test.ts
- tests/integration/mcp-protocol/test-helpers.ts
- tests/integration/mcp-protocol/tool-invocation.test.ts
- tests/integration/telemetry/mcp-telemetry.test.ts
- tests/unit/mcp/disabled-tools.test.ts
- tests/unit/mcp/tools-documentation.test.ts

Conceived by Romuald Członkowski - https://www.aiadvisors.pl/en

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

* feat: Tool consolidation v2.26.0 - reduce tools by 38% (31 → 19)

Major consolidation of MCP tools using mode-based parameters for better
AI agent ergonomics:

Node Tools:
- get_node_documentation → get_node with mode='documentation'
- search_node_properties → get_node with mode='search_properties'
- get_property_dependencies → removed

Validation Tools:
- validate_node_operation + validate_node_minimal → validate_node with mode param

Template Tools:
- list_node_templates → search_templates with searchMode='nodes'
- search_templates_by_metadata → search_templates with searchMode='metadata'
- get_templates_for_task → search_templates with searchMode='task'

Workflow Getters:
- n8n_get_workflow_details/structure/minimal → n8n_get_workflow with mode param

Execution Tools:
- n8n_list/get/delete_execution → n8n_executions with action param

Test updates for all consolidated tools.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

Conceived by Romuald Członkowski - https://www.aiadvisors.pl/en

* docs: comprehensive README update for v2.26.0 tool consolidation

- Quick Start: Added hosted service (dashboard.n8n-mcp.com) as primary option
- Self-hosting: Renamed options to A (npx), B (Docker), C (Local), D (Railway)
- Removed: "Memory Leak Fix (v2.20.2)" section (outdated)
- Removed: "Known Issues" section (outdated container management)
- Claude Project Setup: Updated all tool references to v2.26.0 consolidated tools
  - validate_node({mode: 'minimal'|'full'}) instead of separate tools
  - search_templates({searchMode: ...}) unified template search
  - get_node({mode: 'docs'|'search_properties'}) for documentation
  - n8n_executions({action: ...}) unified execution management
- Available MCP Tools: Updated to show 19 consolidated tools (7 core + 12 mgmt)
- Recent Updates: Simplified to just link to CHANGELOG.md

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

Conceived by Romuald Członkowski - https://www.aiadvisors.pl/en

* fix: update tool count from 31 to 19 in diagnostic message

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

* fix(tests): update tool count expectations for v2.26.0

Update handlers-n8n-manager.test.ts to expect new consolidated
tool counts (7/12/19) after v2.26.0 tool consolidation.

Conceived by Romuald Członkowski - www.aiadvisors.pl/en

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

---------

Co-authored-by: Claude <noreply@anthropic.com>
This commit is contained in:
Romuald Członkowski
2025-11-25 18:39:00 +01:00
committed by GitHub
parent 9ee4b9492f
commit ff69e4ccca
28 changed files with 925 additions and 1766 deletions

View File

@@ -84,16 +84,16 @@ describe('MCP Error Handling', () => {
describe('Tool-Specific Errors', () => {
describe('Node Discovery Errors', () => {
it('should handle invalid category filter', async () => {
const response = await client.callTool({ name: 'list_nodes', arguments: {
category: 'invalid_category'
it('should handle search with no matching results', async () => {
const response = await client.callTool({ name: 'search_nodes', arguments: {
query: 'xyznonexistentnode123'
} });
// Should return empty array, not error
const result = JSON.parse((response as any).content[0].text);
expect(result).toHaveProperty('nodes');
expect(Array.isArray(result.nodes)).toBe(true);
expect(result.nodes).toHaveLength(0);
expect(result).toHaveProperty('results');
expect(Array.isArray(result.results)).toBe(true);
expect(result.results).toHaveLength(0);
});
it('should handle invalid search mode', async () => {
@@ -135,11 +135,13 @@ describe('MCP Error Handling', () => {
});
describe('Validation Errors', () => {
// v2.26.0: validate_node_operation consolidated into validate_node
it('should handle invalid validation profile', async () => {
try {
await client.callTool({ name: 'validate_node_operation', arguments: {
await client.callTool({ name: 'validate_node', arguments: {
nodeType: 'nodes-base.httpRequest',
config: { method: 'GET', url: 'https://api.example.com' },
mode: 'full',
profile: 'invalid_profile' as any
} });
expect.fail('Should have thrown an error');
@@ -279,9 +281,9 @@ describe('MCP Error Handling', () => {
for (let i = 0; i < requestCount; i++) {
promises.push(
client.callTool({ name: 'list_nodes', arguments: {
limit: 1,
category: i % 2 === 0 ? 'trigger' : 'transform'
client.callTool({ name: 'search_nodes', arguments: {
query: i % 2 === 0 ? 'webhook' : 'http',
limit: 1
} })
);
}
@@ -292,12 +294,14 @@ describe('MCP Error Handling', () => {
});
describe('Invalid JSON Handling', () => {
// v2.26.0: validate_node_operation consolidated into validate_node
it('should handle invalid JSON in tool parameters', async () => {
try {
// Config should be an object, not a string
await client.callTool({ name: 'validate_node_operation', arguments: {
await client.callTool({ name: 'validate_node', arguments: {
nodeType: 'nodes-base.httpRequest',
config: 'invalid json string' as any
config: 'invalid json string' as any,
mode: 'full'
} });
expect.fail('Should have thrown an error');
} catch (error: any) {
@@ -320,13 +324,13 @@ describe('MCP Error Handling', () => {
describe('Timeout Scenarios', () => {
it('should handle rapid sequential requests', async () => {
const start = Date.now();
for (let i = 0; i < 20; i++) {
await client.callTool({ name: 'get_database_statistics', arguments: {} });
await client.callTool({ name: 'tools_documentation', arguments: {} });
}
const duration = Date.now() - start;
// Should complete reasonably quickly (under 5 seconds)
expect(duration).toBeLessThan(5000);
});
@@ -410,25 +414,25 @@ describe('MCP Error Handling', () => {
}
// Should still work
const response = await client.callTool({ name: 'list_nodes', arguments: { limit: 1 } });
const response = await client.callTool({ name: 'search_nodes', arguments: { query: 'webhook', limit: 1 } });
expect(response).toBeDefined();
});
it('should handle mixed success and failure', async () => {
const promises = [
client.callTool({ name: 'list_nodes', arguments: { limit: 5 } }),
client.callTool({ name: 'search_nodes', arguments: { query: 'webhook', limit: 5 } }),
client.callTool({ name: 'get_node', arguments: { nodeType: 'invalid' } }).catch(e => ({ error: e })),
client.callTool({ name: 'get_database_statistics', arguments: {} }),
client.callTool({ name: 'tools_documentation', arguments: {} }),
client.callTool({ name: 'search_nodes', arguments: { query: '' } }).catch(e => ({ error: e })),
client.callTool({ name: 'list_ai_tools', arguments: {} })
client.callTool({ name: 'get_node', arguments: { nodeType: 'nodes-base.httpRequest' } })
];
const results = await Promise.all(promises);
// Some should succeed, some should fail
const successes = results.filter(r => !('error' in r));
const failures = results.filter(r => 'error' in r);
expect(successes.length).toBeGreaterThan(0);
expect(failures.length).toBeGreaterThan(0);
});
@@ -436,14 +440,14 @@ describe('MCP Error Handling', () => {
describe('Edge Cases', () => {
it('should handle empty responses gracefully', async () => {
const response = await client.callTool({ name: 'list_nodes', arguments: {
category: 'nonexistent_category'
const response = await client.callTool({ name: 'search_nodes', arguments: {
query: 'xyznonexistentnode12345'
} });
const result = JSON.parse((response as any).content[0].text);
expect(result).toHaveProperty('nodes');
expect(Array.isArray(result.nodes)).toBe(true);
expect(result.nodes).toHaveLength(0);
expect(result).toHaveProperty('results');
expect(Array.isArray(result.results)).toBe(true);
expect(result.results).toHaveLength(0);
});
it('should handle special characters in parameters', async () => {
@@ -469,14 +473,15 @@ describe('MCP Error Handling', () => {
it('should handle null and undefined gracefully', async () => {
// Most tools should handle missing optional params
const response = await client.callTool({ name: 'list_nodes', arguments: {
const response = await client.callTool({ name: 'search_nodes', arguments: {
query: 'webhook',
limit: undefined as any,
category: null as any
mode: null as any
} });
const result = JSON.parse((response as any).content[0].text);
expect(result).toHaveProperty('nodes');
expect(Array.isArray(result.nodes)).toBe(true);
expect(result).toHaveProperty('results');
expect(Array.isArray(result.results)).toBe(true);
});
});
@@ -508,13 +513,15 @@ describe('MCP Error Handling', () => {
}
});
// v2.26.0: validate_node_operation consolidated into validate_node
it('should provide context for validation errors', async () => {
const response = await client.callTool({ name: 'validate_node_operation', arguments: {
const response = await client.callTool({ name: 'validate_node', arguments: {
nodeType: 'nodes-base.httpRequest',
config: {
// Missing required fields
method: 'INVALID_METHOD'
}
},
mode: 'full'
} });
const validation = JSON.parse((response as any).content[0].text);