Open source Clockify alternatives for AI agents

3 alternatives to Clockify. 3 have an interface an agent can drive. 3 are open source.

Listing	License	Agent interface	Reach	Effort	Last activity
Kimai	AGPL-3.0	API, from the builder	3 of 9 jobs	Config only	Aug 31, 2026
solidtime	AGPL-3.0	API, from the builder	9 of 10 jobs	Config only	Sep 1, 2026
Traggo	GPL-3.0	API, from the builder	8 of 9 jobs	Config only	Jul 31, 2026

Kimai

Self-hosted team time tracking with invoicing and a Builder-documented JSON API.

Self-hosted · Kimai Cloud Standard: €4 per user/month · Kimai Cloud Professional: €5 per user/month

Use it when

my team bills by the hour and I want timesheets, rates and invoices in one place I run myself
I want my agent to log time and pull project hours through an API instead of a spreadsheet

An agent cannot reach

Configure timesheet rules, rounding and lockdown
Install plugins from the store
Authenticate with SAML or LDAP

3 more jobs are undetermined.

Gotchas

AGPL-3.0: modifications to a hosted instance must be shared with its users; some Adopters cannot accept this
Must run on a subdomain; installing in a subdirectory is not supported
API tokens are shown once at creation; API attribute order is not stable and DateTime values must use YYYY-MM-DDTHH:mm:ss, not ISO 8601
Leave management, overtime and expenses are paid plugins or Cloud Professional features, not core

solidtime

Laravel time tracker for freelancers and agencies with a full REST API for entries, projects, reports and invoices.

Self-hosted · Cloud Solo: Free · Cloud Professional: €9 per month

Use it when

my studio bills clients by the hour and I want tracked time to turn into reports and invoices without a SaaS seat fee
I want my agent to start timers, file entries against projects and pull weekly reports over a documented API

An agent cannot reach

Create API tokens

Gotchas

AGPL-3.0 copyleft
PostgreSQL only; PDF output needs a Gotenberg container
Maintainers auto-close pull requests over 50 lines from unvouched authors and ban AI-generated PRs; plan to keep changes in your fork
Invoicing, estimates and PDF reports are Professional features on cloud; confirm whether the self-hosted build gates them

Traggo

Tag-based self-hosted time tracking in Go, driven by the same GraphQL API its UI uses.

Free

Use it when

I want the simplest possible self-hosted tracker where categories are tags I invent, not a project tree
I want my agent to start and stop timers and pull weekly totals by tag over GraphQL

An agent cannot reach

Export to CSV or invoice

Gotchas

GPL-3.0 copyleft
SQLite is the only database dialect
No clients, projects, rates, invoices or exports: it tracks time and shows statistics
The GraphQL API is documented only by schema.graphql; there is no agent guide and no OpenAPI

Questions

Is there an open source alternative to Clockify?

Yes. All 3 listings here are open source: Kimai (AGPL-3.0), solidtime (AGPL-3.0), Traggo (GPL-3.0).

Which Clockify alternatives have an MCP server?

None of these has an MCP server from its builder on record. The recorded interface is API.

Which Clockify alternative can an agent do the most with?

solidtime: 9 of 10 recorded jobs reachable. Jobs differ by listing, so read each list before you choose.

Listings come from reading each repo and its docs. Reach counts the jobs an agent can do through the stated interface, and each listing page shows the evidence. Order follows fit. For agents: Markdown · JSON