Open-source cost-control plugin from Microsoft Research and UC Berkeley that learns across a repository's sessions to cut what coding agents such as Claude Code, Codex, GitHub Copilot CLI and Pi spend, without changing the agent's model or code.
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- 01
Micro-skills: repo facts learned from repeated evidence are injected at session start
- 02
Tool pruning removes tools that go unused, through the agent's own settings
- 03
Failure-loop intervention spots repeated errors and nudges the agent to try another way
- 04
Every action reversible: contradicted facts are dropped and pruned tools can be restored
- 05
Plugins for Claude Code, Codex, Copilot CLI and Pi; Cursor Agent, opencode and Hermes Agent experimental
- 06
Cost counted with cache pricing, including the plugin's own model calls
- 07
Reproducible SWE-Bench and Web-Bench experiments in the repo
Open Source
Free and open-source (Apache-2.0). Needs no API key of its own; model usage, including the plugin's own model calls, is billed to the agent plan or key you already use.
Best for
Developers and teams who run the same coding agent on the same repositories every day and want lower token bills without switching agents or models.
Not ideal for
One-off sessions in new repositories (savings accrue over repeated sessions), Windows users of the Cursor adapter, or anyone on agent versions outside the supported ranges.
A credible, research-backed way to trim 18-31% off coding-agent costs on familiar repos; install is still clone-based and pinned to specific agent versions, so expect some upkeep.
Released Oct 2026 with the arXiv paper (2610.22732); Nov 4, 2026 commits reduced loop-guard false alarms so a productive turn is not treated as a loop and documented model-call costs.
As of
Is TokenEconomizer free?+
Yes - TokenEconomizer is Open Source. Free and open-source (Apache-2.0). Needs no API key of its own; model usage, including the plugin's own model calls, is billed to the agent plan or key you already use.
Is TokenEconomizer open source?+
Yes - TokenEconomizer is open source. Free and open-source (Apache-2.0). Needs no API key of its own; model usage, including the plugin's own model calls, is billed to the agent plan or key you already use.
Who is TokenEconomizer best for?+
Developers and teams who run the same coding agent on the same repositories every day and want lower token bills without switching agents or models.
Who is TokenEconomizer not ideal for?+
One-off sessions in new repositories (savings accrue over repeated sessions), Windows users of the Cursor adapter, or anyone on agent versions outside the supported ranges.
What are the best TokenEconomizer alternatives?+
The closest TokenEconomizer alternatives on ai.dosa.dev are Pieces for Developers, agenttrace, Vibe Kanban - all listed under Developer Productivity & Workflow.
Who makes TokenEconomizer?+
TokenEconomizer is developed by Microsoft. It is listed in the Developer Productivity & Workflow category on ai.dosa.dev.
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