Harness Drift From History

What it does

When your agent uses it

• Tasks that involve Architecture decision records
• Tasks that involve GitOps

Example prompts

• “/harness-drift-from-history”

Requirements

• Node.js
• Pre-approved tools (allowed-tools): Bash

Workflow steps

5 steps, taken from the first numbered list in SKILL.md.

1. 1Lists records from metaharness-audit namespace via audit-list.mjs
2. 2Picks the most recent record by startedAt (or --baseline-since 7d skips anything newer than 7 days)
3. 3Runs a fresh oia-audit against the current path
4. 4Diffs the two via audit-trend, applying --alert-on-distance-below ${threshold}
5. 5Returns the structured drift report

What it can do on your machine

Read from SKILL.md and the folder at commit 6c04654. It shows what the files ask for, not the result of running them.

• Tool permissions

  Pre-approves these tools, so the agent can use them without asking each time:

  • Bash

  From allowed-tools in the SKILL.md frontmatter.

• Runs code

  Shell commands in SKILL.md call:

  • npx

  From the folder's file list and the shell code blocks in SKILL.md.

• Network

  No URLs in SKILL.md. Its commands use npx, which can reach the network depending on how they are called.

  From URLs in SKILL.md, links to its own repository left out.

• Credentials

  Names no API keys, tokens, secrets or passwords.

  From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Harness Drift From History loads about 632 tokens when it runs. Until then it costs about 93 tokens; SKILL.md has 169 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it

~93

When it runs · the whole SKILL.md, loaded when a task matches

~632

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

• NotePre-approves every shell command (allowed-tools: Bash)SKILL.md

  allowed-tools: Bash

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from ruvnet/ruflo at commit 6c04654, republished under its MIT licence (© ruvnet). 169 words, ~632 tokens.

name

harness-drift-from-history

description

One-command drift detection. Composes audit-list + oia-audit + audit-trend into a single primitive — finds the most recent audit in `metaharness-audit` namespace, runs a fresh audit against the current repo, diffs them via ADR-152 §3.1 similarity, and alerts when structural distance crosses `--threshold`. Iter 53 of ADR-150 deep integration.

allowed-tools

Bash

argument-hint

[--path .] [--baseline-since 7d] [--threshold 0.95] [--dry-run] [--format json|table]

npx ruflo metaharness audit-list --format json   # → pick a key by hand
npx ruflo metaharness oia-audit --format json > /tmp/curr.json
npx ruflo metaharness audit-trend \
  --baseline-key <picked-key> --current /tmp/curr.json \
  --alert-on-distance-below 0.95

npx ruflo metaharness drift-from-history --threshold 0.95

$ npx ruflo metaharness drift-from-history --threshold 0.95
# drift-from-history

Baseline:        audit-2026-06-16T22-58-47-840Z
Current:         2026-06-16T23:05:02.231Z

Structural similarity: 1 (near-identical)
Distance:              0

✓ similarity ≥ 0.95 — OK

© ruvnet, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in plugins/ruflo-metaharness/skills/harness-drift-from-history of ruvnet/ruflo.

Open the folder on GitHubat commit 6c04654