Freedom251 › AI Agent Evaluation Tools
Tangle

What Tangle is
Tangle runs AI agents in isolated sandboxes and records their activity for review before a person approves changes. Its Sandbox provides Linux machines with shell, files, ports, a desktop, and trace capture through an SDK and CLI. The site names Claude Code, Codex, OpenCode, Hermes, OpenClaw, NanoClaw, Kimi Code, and Pi as supported agents. Run records include model calls, tool use, timing, tokens, and cost. Tangle Intelligence can analyze multiple runs for recurring failures and expensive steps, with findings shaped into a pull request, issue, skill proposal, or team summary for human review. Tangle Router offers one inference API, supports the OpenAI and Anthropic SDKs and plain fetch, and says it routes to 66+ providers. Its free plan costs nothing but includes no credit; prepaid credit is needed before using AI models. Paid plans start at $29/mo. Tangle says public services use TLS in transit and managed stores and Restic backups are encrypted at rest. It also discloses that two self-managed dedicated hosts lack full-disk encryption, an open risk.
Who it suits
Tangle suits teams that want AI-agent activity recorded and reviewed before approving changes. Its analysis and output options are also aimed at teams examining patterns across multiple runs.
What it does well
- Sandbox includes shell, files, ports, and desktop.
- Run records capture tool use, tokens, and cost.
- Findings can become issues or pull requests.
- Router supports OpenAI and Anthropic SDKs.
- Free plan is available.
What to know first
- Free plan includes no AI model credit.
- Prepaid credit is required before using AI models.
- Two dedicated hosts lack full-disk encryption.
- Hosted assistants are described as a preview.
Limits
The Free plan costs nothing and includes no credit, so prepaid credit is required before using AI models. Router usage uses pay-as-you-go credits, while paid plans start at $29/mo.
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| Free | No included credit · add prepaid credit before using AI models | Free |
As tangle.tools lists them, read 3 Oct 2026. The maker's own page has the final word.
Getting started
- Open https://tangle.tools/
- Choose the API, Linux, or web access route
- Create a free plan account or select a paid plan from $29/mo
- Add prepaid credit before using AI models on the free plan
- Use the SDK or CLI to start a Sandbox run
- Connect a supported agent and review its recorded output
Verdict
Tangle combines agent sandboxes, run records, analysis, and review outputs, with a separate model router. Before choosing it, note the no-credit free plan and the disclosed encryption risk on two self-managed hosts.
Questions
Is Tangle free?
Yes. Tangle has a free plan priced at $0, but it includes no credit for AI models. Paid plans start at $29/mo.
Which platforms does Tangle support?
Tangle lists API, Linux, and web platforms.
Which AI agents are supported?
Named agents include Claude Code, Codex, OpenCode, Hermes, OpenClaw, NanoClaw, Kimi Code, and Pi.
How does Tangle Router charge?
Router uses pay-as-you-go billing with credits and does not require a subscription.
What does Tangle record from a run?
It can record model calls, tool use, timing, token usage, and cost for inspection after the run.
What security controls are described?
Public services use TLS in transit, while managed stores and Restic backups are encrypted at rest. Two self-managed dedicated hosts lack full-disk encryption.
Facts from Tangle's own pages
- Analysis
- Tangle Intelligence is described as a way to analyze multiple runs for recurring failures and expensive steps. · tangle.tools, 3 Oct 2026
- Hosted assistants
- The documentation describes hosted assistants as a preview and says the first completed text reply and full request-to-resolution flow have not yet been verified. · docs.tangle.tools, 3 Oct 2026
- Integrations
- The homepage shows GitHub, Linear, Slack, and Tangle examples for review outputs. · tangle.tools, 3 Oct 2026
- Model router
- Tangle Router offers one API for model inference, supports the OpenAI and Anthropic SDKs and plain fetch, and says it routes to 66+ providers. · router.tangle.tools, 3 Oct 2026
- Product
- Tangle runs AI agents in isolated sandboxes and records their work for review before a person approves changes. · tangle.tools, 3 Oct 2026
- Review outputs
- The site describes turning measured findings into a pull request, issue, skill proposal, or team summary for human review. · tangle.tools, 3 Oct 2026
- Router billing
- Router says it uses pay-as-you-go pricing with credits and no subscriptions required. · router.tangle.tools, 3 Oct 2026
- Run records
- Tangle records model calls, tool use, timing, tokens, and cost so a run can be inspected after the agent finishes. · tangle.tools, 3 Oct 2026
- Sandbox
- Tangle Sandbox provides isolated Linux machines with shell, files, ports, desktop, and trace capture through its SDK and CLI. · sandbox.tangle.tools, 3 Oct 2026
- Security controls
- The security page states that public services use TLS in transit and managed stores and Restic backups are encrypted at rest. · tangle.tools, 3 Oct 2026
- Security examination
- Tangle says it completed a SOC 2 Type II examination covering June 14 to September 14, 2026, and that the report is in issuance. · tangle.tools, 3 Oct 2026
- Security limitation
- The security page discloses that two self-managed dedicated hosts lack full-disk encryption and remain an open risk. · tangle.tools, 3 Oct 2026
- Support
- The documentation site says users can ask questions and get to know the project and community in Discord. · docs.tangle.tools, 3 Oct 2026
- Supported agents
- The site names Claude Code, Codex, OpenCode, Hermes, OpenClaw, NanoClaw, Kimi Code, and Pi. · tangle.tools, 3 Oct 2026
Where Tangle stands on Freedom251
- AI Agent Evaluation Tools#22 of 28