Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add skills/swimmwatch/cloakbrowser-mcp/doubt-driven-developmentnpx skills add swimmwatch/cloakbrowser-mcp --skill doubt-driven-developmentgit clone --depth 1 https://github.com/swimmwatch/cloakbrowser-mcpWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/swimmwatch/cloakbrowser-mcp/doubt-driven-development)<a href="https://agentmods.dev/skills/swimmwatch/cloakbrowser-mcp/doubt-driven-development"><img src="https://agentmods.dev/badge/skills/swimmwatch/cloakbrowser-mcp/doubt-driven-development.svg" alt="Measured on agentmods" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00097 | $0.00369 |
| Opus 5 | $0.00048 | $0.00185 |
| Sonnet 5 | $0.00019 | $0.00074 |
| Haiku 4.5 | $0.00010 | $0.00037 |
Grade A, and why
doubt-driven-development scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 5d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
What it actually says
Doubt-Driven Development
- State the named decision, desired outcome, constraints, alternatives, and cost of being wrong.
- Read
AGENTS.mdand inspect relevant code, tests, docs, dependencies, package metadata, images, and workflows. Use CodeGraph before broad source search when indexed. Separate evidence from assumptions. - Challenge upstream contract ownership, child-process and generated-config safety, stdio separation, Streamable HTTP session isolation, browser profile ownership, unsafe upstream tools, filesystem/network exposure, Docker sandbox assumptions, cross-platform compatibility, supply chain, operator burden, rollback, and artifact immutability where applicable.
- For each material concern, provide a concrete failure scenario, affected contract, impact, evidence, detectability, recovery path, and smallest resolving experiment.
- Do not invent measurements, threat actors, provider guarantees, workflow protections, or supported environments.
- Use Prompt MCP only when the user must make a material choice between evidenced alternatives. Do not convert a recommendation into approval.
End with a recommendation, evidence confidence, unresolved risks, and explicit conditions for proceeding, revising, experimenting, or deferring. Do not implement, publish, or release from this workflow.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 5d ago First seen · 29 lines · 97 tokens per session scan A 5c0e95521c28
doubt-driven-development is a skill published in the GitHub repository swimmwatch/cloakbrowser-mcp (56 stars, last pushed today), licensed MIT. It adds 97 tokens to every session and 369 once invoked, about $0.0005 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
Other skills, from other repositories
browser-search
Multi-engine web search (SearXNG) + browsing/scraping (Camofox, CloakBrowser). Use whenever you need to do web research.
chrome-orchestrator
Teach agents how to orchestrate Arthur and Gloria headless Chrome environments dynamically via the Python SDK and CLI.
x402
Set up Browser Use Cloud payments with x402 — pay per request from a crypto wallet (USDC on Base mainnet), no signup or API key. Two setups it works out up front — "just use it" (set up a wallet so you or Claude Code can run cloud browser tasks paid from the wallet — Claude writes and runs throwaway scripts, nothing…
browser-use
Direct browser control via CDP for web interaction: automation, scraping, testing, screenshots, and site/app work.
open-source
Documentation reference for writing Python code using the browser-use open-source library. Use this skill whenever the user needs help with Agent, Browser, or Tools configuration, is writing code that imports from browseruse, asks about @sandbox deployment, supported LLM models, Actor API, custom tools, lifecycle…
opencli-autofix
Automatically fix broken OpenCLI adapters when commands fail. Load this skill when an opencli command fails — it guides you through collecting a trace artifact, patching the adapter, retrying, and filing an upstream GitHub issue after a verified fix. Works with any AI agent.