Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add rules/bcharleson/heyreach-mcp/cursorrulesgit clone --depth 1 https://github.com/bcharleson/heyreach-mcpWhat it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.02299 | $0.02299 |
| Opus 5 | $0.01149 | $0.01149 |
| Sonnet 5 | $0.00460 | $0.00460 |
| Haiku 4.5 | $0.00230 | $0.00230 |
Grade A, and why
.cursorrules scanned grade A with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
this.client = axios.create({ How it starts
The opening of the file, as written. The whole thing — 354 lines — stays where its author put it; the contents beside it link to each section on GitHub.
HeyReach MCP Server - Cursor Rules
Project Overview
This is a production-ready Model Context Protocol (MCP) server for HeyReach LinkedIn automation platform. It enables Claude Desktop and other MCP clients to manage campaigns, add leads, and automate LinkedIn outreach with comprehensive validation and error handling.
MCP Protocol Compliance
Current Protocol Version
- Protocol Version: 2025-03-26 (current)
- Revision: Current (ready for use)
- SDK: @modelcontextprotocol/sdk (TypeScript)
Supported MCP Features
- ✅ Tools: Full implementation with 12 production-ready tools
- ✅ Resources: Not implemented (not needed for this use case)
- ✅ Prompts: Not implemented (not needed for this use case)
- ❌ Sampling: Not implemented
- ❌ Logging: Should be implemented for production debugging
- ❌ Pagination: Should be implemented for large result sets
MCP Client Compatibility
Primary targets (verified working):
- ✅ Claude Desktop App: Full support (tools, prompts, resources)
- ✅ Cursor: Tools support
- ✅ Windsurf Editor: Tools support with AI Flow
- ✅ Continue: Tools, prompts, and resources support
Code Style & Architecture
TypeScript Standards
- Use strict TypeScript with proper type definitions
- Prefer explicit types over
any - Use Zod for runtime validation and schema definition
- Follow functional programming patterns where appropriate
- Use async/await for all asynchronous operations
MCP Server Architecture
// Proper MCP server structure
export class HeyReachMcpServer {
private server: McpServer;
private heyReachClient: HeyReachClient;
constructor(config: HeyReachConfig) {
this.server = new McpServer({
name: 'heyreach-mcp-server',
version: '1.1.7'
});
this.heyReachClient = new HeyReachClient(config);
this.setupTools();
}
}
Tool Definition Best Practices
// Correct tool definition pattern
this.server.tool(
'tool-name',
{
// Zod schema - NO description field here
param1: z.string().describe('Parameter description'),
param2: z.number().optional().default(0).describe('Optional parameter')
},
async ({ param1, param2 }) => {
try {
// Implementation
return createSuccessResponse(data, message);
} catch (error) {
return createErrorResponse(error.message);
}
}
);
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 2d ago First seen · 354 lines · 2,299 tokens per session scan A 407ddf99010b
.cursorrules is a cursor rule published in the GitHub repository bcharleson/heyreach-mcp (5 stars, last pushed 11mo ago), licensed MIT. It adds 2,299 tokens to every session, about $0.0115 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
Other cursor rules, from other repositories
angular-20
This rule provides comprehensive best practices and coding standards for Angular development, focusing on modern TypeScript, standalone components, signals, and performance optimizations.
dev-standard
Apache Superset development standards and guidelines for Cursor IDE.
cli-error-handling
CLI command error handling patterns.
prefer-direct-imports-over-module-mocks
Prefer extracting a testable core over vi.mock / vi.resetModules when unit tests need to reach production logic entangled with config, env, or singletons.
control-plane-descriptors
Control plane descriptor and instance implementation patterns.
family-instance-domain-actions
Family instance domain action implementation patterns.