Harvest MCP Server
Connect your AI assistant to Harvest time tracking. Query time entries, analyze profitability, track utilization, and manage Harvest data through natural language.
Caution. Specific findings reduced this grade. They are listed on the page. Grades reflect the full trust pyramid: code, verification depth, and reputation. New projects cap at C until adoption is earned.
How we verified
Verified is a snapshot. Live keeps it current, and builds your track record.
⚡ Connect GitHub → continuous verification on every pushwhy connect →Who stands behind it
southleft
Source: Glama
Claim it to get a verified publisher badge, a free copy of our full audit findings, and direct contact for any high-priority issues we find. Or connect your repo for our deepest verification, Live Monitored: read-only, revoke anytime. What we access →
Install from
The grade above is for the source repository. Registries can serve a different version, so we mark the ones we were not able to read.
These names and descriptions are the publisher's own, read from the source code. We print them as written. Our assessment is the findings above, not this list.
harvest_get_companyGet information about the authenticated Harvest company/account
harvest_get_current_userGet information about the currently authenticated Harvest user
harvest_list_usersList all users in the Harvest account with optional filters
harvest_list_time_entriesList time entries with optional filters (user, client, project, date range, etc.)
harvest_get_time_entryGet a specific time entry by ID
harvest_create_time_entryCreate a new time entry
harvest_stop_timerStop a running timer on a time entry
harvest_delete_time_entryDelete a time entry. Use this to remove erroneous or unwanted time entries.
harvest_list_clientsList all clients. Note: Client contacts (people) are available via harvest_list_contacts tool.
harvest_list_contactsList client contacts (people associated with clients). Filter by client_id to get contacts for a specific client. Returns contact details including name, title, email, and phone numbers.
harvest_list_projectsList all projects
harvest_list_invoicesList invoices with optional filters
harvest_list_expensesList expenses with optional filters
harvest_list_tasksList all tasks (used for time entry assignment)
harvest_get_ratesGet cost and billable rates for users and projects. Fetches from Harvest API with fallback to rates.json config file and DEFAULT_COST_RATE environment variable.
harvest_resolve_entitiesResolve entity names to IDs using fuzzy matching. Searches clients, projects, users, and tasks by name with configurable confidence threshold. Useful for finding entities when you only have partial or approximate names.
harvest_compute_profitabilityCompute profitability metrics for a date range. Supports three modes: time_based (hours * rates), invoice_based (actual invoices vs costs), and hybrid (invoices where available, time-based otherwise). Can group by client, project, user, task, date, week, or month.
harvest_compute_utilizationCompute utilization metrics for a date range. Shows how much of available capacity is being used, with billable vs non-billable breakdown. Can group by user, client, project, task, date, week, or month.
harvest_aggregate_timeAggregate time entries by various dimensions. Simple convenience tool for getting total hours, entry counts, and billable amounts grouped by client, project, user, task, date, week, or month.
harvest_compute_budget_performanceAnalyze employee performance based on budget adherence per project. Compares actual hours logged vs user budget allocations, identifies top performers (under budget), and flags repeat offenders (consistently over budget). Use this for performance reviews, capacity planning, and identifying training …
harvest_get_schemaGet schema definitions, field types, and enum values for Harvest entities. Use to understand available fields, data types, and valid values. No authentication required.
Disclosed vulnerabilities in this server's declared npm dependencies (via OSV). Whether each is reachable depends on the installed versions.
When Vitest UI server is listening, arbitrary file can be read and executed
@modelcontextprotocol/sdk has cross-client data leak via shared server/transport instance reuse
Anthropic's MCP TypeScript SDK has a ReDoS vulnerability
Hono JWK Auth Middleware has JWT algorithm confusion when JWK lacks "alg" (untrusted header.alg fallback)
hono: CORS Middleware reflects any Origin with credentials when `origin` defaults to the wildcard
DEFAULT_COST_RATEFallback cost rate NoREDIS_URLTool annotations
No tools have read-only/destructive annotations
Add readOnlyHint or destructiveHint annotations to every tool so hosts can warn users before invoking.
All four hints declared on every tool
21/21 tools missing one or more hints — harvest_get_company (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); harvest_get_current_user (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); harvest_list_users (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint), +18 more. OpenAI's directory rejects tools where any of the four hints are missing or non-boolean.
For every tool, set all four hints (readOnlyHint, destructiveHint, idempotentHint, openWorldHint) to explicit true/false values that match the handler’s actual behaviour.
Tests exist
No test files found
Add tests that exercise each declared tool.
Production dependencies are patched
0 critical, 6 high severity in production deps — @modelcontextprotocol/sdk@1.25.1 (high), @modelcontextprotocol/sdk@1.25.1 (high)
Run npm audit fix, or upgrade the affected packages to a non-vulnerable version.
Dev dependencies
1 critical/high in dev-only deps (does not ship to users)
Upgrade dev dependencies when convenient.
Claim the listing to review these findings one by one and send us a correction where you disagree, straight to the team. Claiming also means we tell you when the grade moves, and reach you first if we find anything urgent.
[](https://m8ven.ai/mcp/southleft/harvest-mcp)?variant=verified from the URL.Vetting this one by hand? Tool Check is an MCP that scores other MCPs. Add it once and ask Claude, ChatGPT, or any MCP client to grade a server, surface CVEs, check the publisher, and suggest safer alternatives — before you install.
https://m8ven.ai/api/mcp/tool-check