AgentLoop vs Forsy: Features, Pricing & Which Is Better (2026)
A side-by-side comparison of AgentLoop and Forsy — features, pricing, and ideal use cases — to help you decide which AI tool fits your workflow.
AgentLoop
Edward Yi
AgentLoop turns a single ChatGPT plan into unattended Codex worker + independent-critic cycles that build against your local rubric until the work passes.
Key features
- Fresh Worker Per Cycle: Each build cycle spawns a clean Codex worker with fresh context so long-running loops do not accumulate stale state or memory drift.
- Independent Critic Process: A separate fresh process grades every result against your rubric so passing tests never become permission to stop looking.
- Rubric in GUIDELINES.md: Definition-of-done lives as plain Markdown in your repo and is read on every cycle, so standards persist while prompts do not.
- Evidence Carried in Files: Worker output, critic verdicts, and fixes are written to project files so the next cycle inherits the actual state of the work.
- Bounded Goal + Cycle Budget: You cap the loop with a goal.md and cycle budget so unattended runs stop at a predictable ceiling.
- MCP Status Interface: Ask ChatGPT for status through MCP so you can monitor cycles, verdicts, transcripts, and cost without opening the dashboard.
- Local-first Install: git clone the pinned v1.1.0 release and run node src/daemon.js — no npm install, no hosted workspace, MIT licensed.
Best for
- Shipping a bounded feature: Add a CSV export across UI, API, and regression suite while the critic enforces end-to-end behavior and edge cases.
- Migration work: Run an unattended migration where fresh workers apply the change and the critic verifies each step against a rubric.
- Hardening pass: Give AgentLoop a hardening goal so it iterates on defects the existing test suite misses, like malformed input handling.
- Product polish loop: Point AgentLoop at a polish goal with clear acceptance criteria and let it converge to VERDICT: PASS.
- Unattended overnight runs: Kick off a long loop, monitor cycle verdicts, and cancel from the dashboard or via MCP when the receipt looks right.
- Enforcing team standards: Codify team engineering standards in GUIDELINES.md so every worker builds against the same definition of done.
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Forsy
Forsy (Forsy-AI)
A platform and open trace format for AI agents to capture, share, and learn from structured real-world work experience.
Key features
- Structured Trace Capture: Records complete agent workflows as structured trajectory data including task context, timestamps, step traces, and tool invocations to make processes inspectable and reproducible.
- Annotated Reasoning Signals: Captures intermediate reasoning artifacts (observations, thoughts, decisions) so researchers and developers can analyze agent cognition and debugging points.
- Tool and Artifact Logging: Logs concrete tool usage, generated artifacts, and outputs from external systems to connect actions with outcomes for audit and post-hoc analysis.
- Human Feedback & Failure Signals: Annotates human corrections, feedback, retries, failures and recovery steps to support supervised fine-tuning, evaluation, and safety analysis.
- Open Skill Format & SDKs: Provides an open, shareable trace schema and skill implementations (e.g., npm / Python components) to integrate with different agent frameworks and pipelines.
- Dataset & Research Support: Enables creation of labeled, inspectable datasets from real agent runs to support evaluation benchmarks, training data, and reproducible experiments.
- Structured trace format capturing agent task context and full step-by-step trajectories
- Records tool usage, observations, internal reasoning signals, and human feedback
- Logs failures, retries, artifacts, and final outcomes for workflows
- Provides a schema directory and example datasets for standardized trace representation
- Published as an open-source repository with MIT license
- Distributed via GitHub with package.json (npm) metadata for integration
- Includes docs, examples, scripts, and dataset folders to support adoption
- Designed to support evaluation, post-training, and research workflows
Best for
- Agent Training Data Generation: Converting completed agent workflows into structured traces to create supervised datasets for fine-tuning or imitation learning.
- Post-Training Evaluation and Auditing: Inspecting step-level reasoning, tool usage, and failures to evaluate agent reliability, reproducibility, and compliance.
- Knowledge Transfer Between Agents: Sharing high-quality workflow traces so specialized agents can learn proven procedures, templates, and tool chains from others' experience.
- Debugging and Root-Cause Analysis: Tracing tool calls and intermediate reasoning signals to reproduce bugs, identify failure modes, and implement targeted fixes.
- Research on Agent Behavior: Providing annotated trajectories for academic or internal research into agent decision-making, emergent behaviors, and safety interventions.
- Reusable Workflow Components: Extracting and packaging repeatable sub-workflows and skills from traced runs to speed development of new agent automations.
- Creating reproducible datasets of agent behavior for academic or internal research
- Evaluating and benchmarking agent workflows and tool use with structured traces
- Collecting process-level data to support post-training, fine-tuning, or RLHF
- Auditing and explainability of agent decision paths and failures
- Sharing reusable agent experience or skills across teams or systems