// SCAN REPORT

Harvest MCP Server

21 tools. 3 can modify or destroy data without limits.

1 destructive tool with no built-in limits. Policy required.

Last updated: 12 Jun 2026

3 can modify or destroy data

18 read-only

21 tools total

Community server · catalogue entry verified 12/06/2026

How to control Harvest MCP Server ↓

TOOL MAP

What Harvest MCP Server exposes to your agents

Read (18) Write / Execute (2) Destructive / Financial (1)

Running more than one server? Check your whole stack →

MOST DANGEROUS TOOLS

Critical Risk

The most dangerous Harvest MCP Server tools

Destructive · High harvest_delete_time_entry This tool permanently removes time entry records from Harvest, which cannot be undone. Write · Low harvest_stop_timer Stopping a timer modifies the state of an existing time entry (sets the end time) but does not delete or irreversibly destroy data. Write · Medium harvest_create_time_entry This tool creates new records in Harvest's time tracking system.

3 of Harvest MCP Server's 21 tools can modify, destroy, or commit something on every call — and an agent calls them with no built-in limits.

POLICY

How to control Harvest MCP Server

PolicyLayer is an MCP gateway — it sits between your AI agents and Harvest MCP Server, and nothing reaches the server without passing your rules. These are the rules we recommend:

Deny destructive operations

{
  "harvest_delete_time_entry": {
    "deny_if": [
      {
        "conditions": [],
        "on_deny": "Blocked by default. Requires approval."
      }
    ]
  }
}

Destructive tools should never be available to autonomous agents without human approval.

Rate limit write operations

{
  "harvest_stop_timer": {
    "limits": [
      {
        "counter": "harvest_stop_timer_per_hour",
        "window": "hour",
        "max": 30,
        "scope": "grant"
      }
    ]
  }
}

Prevents bulk unintended modifications from agents caught in loops.

Cap read operations

{
  "harvest_compute_budget_performance": {
    "limits": [
      {
        "counter": "harvest_compute_budget_performance_per_minute",
        "window": "minute",
        "max": 60,
        "scope": "grant"
      }
    ]
  }
}

Controls API costs and prevents retry loops from exhausting upstream rate limits.

Create a free account and register Harvest MCP Server — nothing to install.
Add these rules — paste them, or build them visually. Tune the limits to your setup.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

ENFORCE POLICY ON HARVEST →

Free to start. No card required.

FULL CATALOGUE

All 21 Harvest MCP Server tools

DESTRUCTIVE 1 tools

Destructive harvest_delete_time_entry Delete a time entry. Use this to remove erroneous or unwanted time entries.

WRITE 2 tools

Write harvest_stop_timer Stop a running timer on a time entry Write harvest_create_time_entry Create a new time entry

READ 18 tools

Read harvest_compute_budget_performance Analyze employee performance based on budget adherence per project. Compares actual hours logged vs user budge Read harvest_aggregate_time Aggregate time entries by various dimensions. Simple convenience tool for getting total hours, entry counts, a Read harvest_compute_profitability Compute profitability metrics for a date range. Supports three modes: time_based (hours rates), invoice_based Read harvest_compute_utilization Compute utilization metrics for a date range. Shows how much of available capacity is being used, with billabl Read harvest_get_company Get information about the authenticated Harvest company/account Read harvest_get_current_user Get information about the currently authenticated Harvest user Read harvest_get_rates Get cost and billable rates for users and projects. Fetches from Harvest API with fallback to rates.json confi Read harvest_get_schema Get schema definitions, field types, and enum values for Harvest entities. Use to understand available fields, Read harvest_get_time_entry Get a specific time entry by ID Read harvest_list_clients List all clients. Note: Client contacts (people) are available via harvest_list_contacts tool. Read harvest_list_contacts List client contacts (people associated with clients). Filter by client_id to get contacts for a specific clie Read harvest_list_expenses List expenses with optional filters Read harvest_list_invoices List invoices with optional filters Read harvest_list_projects List all projects Read harvest_list_tasks List all tasks (used for time entry assignment) Read harvest_list_time_entries List time entries with optional filters (user, client, project, date range, etc.) Read harvest_list_users List all users in the Harvest account with optional filters Read harvest_resolve_entities Resolve entity names to IDs using fuzzy matching. Searches clients, projects, users, and tasks by name with co

EXPLORE

Related servers

Other MCP servers with similar tools — same risk classification, starter policies for each.

FAQ

Questions about Harvest MCP Server

Can an AI agent delete data through the Harvest MCP Server MCP server? +

Yes. The Harvest MCP Server server exposes 1 destructive tools including harvest_delete_time_entry. These permanently remove resources with no undo. PolicyLayer blocks destructive tools by default so they never reach the upstream server.

How do I prevent bulk modifications through Harvest MCP Server? +

The Harvest MCP Server server has 2 write tools including harvest_stop_timer, harvest_create_time_entry. Set a rate limit in your policy -- for example, 10 calls per hour prevents an agent from making more than 10 modifications per hour. PolicyLayer enforces this at the gateway, before calls reach Harvest MCP Server.

How many tools does the Harvest MCP Server MCP server expose? +

21 tools across 4 categories: Destructive, Execute, Read, Write. 18 are read-only. 3 can modify, create, or delete data.

How do I enforce a policy on Harvest MCP Server? +

Register the Harvest MCP Server MCP server in PolicyLayer, apply the suggested rules above (adjust the limits to your use case), and point your AI client at the PolicyLayer proxy URL instead of the server directly. Your agents keep the same tools; PolicyLayer evaluates every call against policy before it executes. Nothing to install, live in minutes.

Enforce policy on every Harvest MCP Server tool call.

Deterministic rules across all 21 Harvest MCP Server tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.

ENFORCE POLICY ON HARVEST →

Free to start. No card required.

21 Harvest MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.