InstantlySAFE
MCP Server for Instantly v2 API
Overview
From the repository's own README, as read at the audited commit. Badges and raw HTML are left out.
A lightweight, robust Model Context Protocol (MCP) server for the Instantly.ai V2 API, built with FastMCP.
Features
- 38 tools across 6 categories (accounts, campaigns, leads, emails, analytics, background_jobs)
- Dual transport support: HTTP (remote deployment) + stdio (local)
- Lazy loading: Reduce context window by loading only specific tool categories
- Multi-tenant support: Per-request API keys for HTTP deployments
- Comprehensive error handling: Detailed, actionable error messages
- Rate limiting: Automatic tracking from API response headers
- Dynamic timeouts: Extended timeouts for search and bulk operations
Quick Start
Installation
# Clone or navigate to the repository cd instantly-mcp-python # Install with pip pip install -e . # Or install dependencies directly pip install fastmcp httpx pydantic python-dotenv
Configuration
Set your Instantly API key:
export INSTANTLY_API_KEY="your-api-key-here"
Or create a .env file:
INSTANTLY_API_KEY=your-api-key-here
Running the Server
HTTP Mode (Recommended for Remote Deployment)
# Using FastMCP CLI fastmcp run src/instantly_mcp/server.py --transport http --port 8000 # Using Python directly python -m instantly_mcp.server --transport http --port 8000 # Or with uvicorn for production uvicorn instantly_mcp.server:mcp.app --host 0.0.0.0 --port 8000
stdio Mode (Local Development)
# Using FastMCP CLI fastmcp run src/instantly_mcp/server.py # Using Python directly python -m instantly_mcp.server
Tool Categories
Accounts (6 tools)
331dd1048d22OBSERVED · 2026-10-09Connect
Built from this server's own package name, version and transport as found in its source — not copied from anyone's documentation, so it cannot drift against a page we do not control. Replace the environment placeholders with a token scoped to the least it needs.
claude mcp add instantly-mcp --env INSTANTLY_API_KEY=${INSTANTLY_API_KEY} -- None instantly-mcp==1.0.0Exposed tools (1)
1 read · 0 write · 0 destructive.
| Tool | Risk | Description |
|---|---|---|
get_server_info | read |
Trust audit
SAFEgrade B · trust 89/100 Nothing in the source contradicts what it says it does. Grade A is reserved for packages that have also passed the behavioural sandbox.
| Layer | What it checks | Result |
|---|---|---|
| L0 | Provenance & inventory | PASS |
| L1 | Static analysis of the code | PASS |
| L2 | Instruction surface (what it tells the agent) | PASS |
| L3 | Class-specific surface | PASS |
| L4 | Behavioural (sandbox) | SKIPPED |
What the source does
- Filesystem
- declared (1 observation(s))
- Network
- declared (7 observation(s))
- Shell
- none-observed
- Dependencies
- not all pinned
- Secrets in source
- none-found
Findings (1)
fastmcp, httpx, pydantic, python-dotenv, uvicorn, starlette
Gates applied: no_behavioural_pass.
331dd1048d22full audit observations/trust-audit/mcp-server/bcharleson__instantly.json · Report an issue / request a re-scanAudit history
Every audit this server has had. A grade with a past is a grade somebody is still checking.
| Date | Source | Verdict | Grade | Score | Change |
|---|---|---|---|---|---|
| 2026-10-09 | 331dd1048d22 | SAFE | B | 89 | first audit |
Questions
What is the Instantly MCP server?
MCP Server for Instantly v2 API
What tools does Instantly expose?
1 in total: 1 read-only, 0 that write, and 0 that can delete or overwrite. Every one is listed on this page with its risk.
Is Instantly safe to connect to an agent?
The audit found nothing in the source that contradicts what it says it does, and graded it B (89/100). Grade A is held back for packages that have also passed a sandboxed behavioural run, which is why a clean server reads B.
What credentials does Instantly need?
It reads INSTANTLY_API_KEY from the environment. Give it a token scoped to the least it needs — an agent that can be talked into calling a tool can be talked into calling it with your credentials.
How does Instantly run?
It speaks stdio, so it runs as a local process your client starts. It is published on PyPI as instantly-mcp.
How current is this page?
The grade is for one exact copy of the source (331dd1048d22), read on 2026-10-09. The repository is watched and re-audited when it changes.