{
 "schema_version": 1,
 "generated": "2026-10-24",
 "id": "harnessrouter-harnessrouter--build-custom-harness-for-product-workflow",
 "repo": "HarnessRouter/harnessrouter",
 "repo_url": "https://github.com/HarnessRouter/harnessrouter",
 "repo_slug": "harnessrouter-harnessrouter",
 "title": "Build a custom harness tuned to your product workflow",
 "page_title": "How to build a custom harness tuned to your product workflow with Harnessrouter",
 "summary": "Create a harness with its own instructions, tools, MCP server and skills, then test it before use.",
 "who": "A product developer who needs an agent to behave a specific way for a recurring workflow in their app.",
 "problem": "A built-in harness does not know your product rules, so each task needs the same instructions repeated.",
 "outcome": "A reusable custom harness that you call by its harness ID for your product tasks.",
 "steps": [
  "Open Agent harnesses and select New harness",
  "In Add harness, set the Name, Base harness, and Default model, then select Create and configure",
  "In Harness Settings, add Agent instructions, configure Tools (optionally Add MCP), and add Skills",
  "Select Save Changes",
  "Select Run Task to test the saved configuration"
 ],
 "agent_prompt": "Using the HarnessRouter repo at https://github.com/HarnessRouter/harnessrouter, create a custom harness named <harness-name> on a supported base harness and add agent instructions for <workflow>. Expected output: a saved harness that completes a test task. Verify that the test run finishes before reporting the harness as ready.",
 "agents": [
  "any"
 ],
 "difficulty": "Intermediate",
 "time": "45 minutes",
 "basis": "readme",
 "caveat": "The base harness cannot be changed after creation, so pick it carefully before you save.",
 "category": "Software and DevOps",
 "tags": [
  "Software and DevOps"
 ],
 "lang": "python",
 "requirements": [
  "Docker installed",
  "About 4 GB of free disk space",
  "A provider API key for at least one supported model provider",
  "Python 3 if you use the Idempotency-Key example"
 ],
 "risk": "sensitive",
 "seen_in_the_wild": false,
 "mentioned_publicly": false,
 "risks": [],
 "best": false,
 "score": 0.7,
 "evidence": [],
 "url": "https://dedupedai.com/use-cases/harnessrouter-harnessrouter/build-custom-harness-for-product-workflow/",
 "md": "https://dedupedai.com/use-cases/harnessrouter-harnessrouter/build-custom-harness-for-product-workflow/index.md",
 "disclaimer": "Deduped lists open-source repositories that belong to other people. We do not own, maintain, audit, or vouch for any of them, and a repo appearing here is not an endorsement or a safety check. The use cases, steps, and prompts are written by AI and may be incomplete, outdated, or just wrong. Where a use case is marked \"Seen in the wild\", we link to public posts where someone described something similar, but we have not verified those posts and the use case itself is still our AI's own write-up. Use all of this at your own risk. Only run code, commands, or agents on systems and accounts you are authorized to use, and read the code and every command before you run it, especially anything that touches credentials, files, or the network. Nothing here is professional, security, legal, or financial advice. All trademarks and project names belong to their respective owners, and their use here does not imply affiliation. Content is provided as is, without warranties of any kind. Found a mistake, a safety problem, or something you want removed? Email hello@dedupedai.com and we will look at it promptly.",
 "api": "https://dedupedai.com/api/v1/usecases/harnessrouter-harnessrouter--build-custom-harness-for-product-workflow.json",
 "api_version": "v1"
}