Pss Benchmark Agent

PSS Benchmark Agent Documentation Protocol

Overview

Benchmark protocol for Opus agents competing to improve the PSS scoring engine. Defines report structure, tracking format, sacred parameters, and anti-patterns.

Prerequisites

• Access to the PSS scoring engine source: rust/skill-suggester/src/main.rs
• Benchmark files: docs_dev/benchmark-v2-prompts-100.jsonl and docs_dev/benchmark-v2-gold-100.json
• History file: docs_dev/methodology-improvement-history.md
• Built binary: cargo build --release in rust/skill-suggester/

Output location (MANDATORY)

Write every file to $MAIN_ROOT/reports/pss-benchmark-agent/ — the main repo root's reports folder, never the worktree's own. Both ./reports/ and ./reports_dev/ are gitignored project-wide. Resolve the path with this shell prologue at the start of your Bash section:

MAIN_ROOT="$(git worktree list | head -n1 | awk '{print $1}')"
REPORT_DIR="$MAIN_ROOT/reports/pss-benchmark-agent"
mkdir -p "$REPORT_DIR"
TIMESTAMP="$(date +%Y%m%d_%H%M%S%z)"   # local time + GMT offset, e.g. 20260421_183012+0200
REPORT_FILE="$REPORT_DIR/$TIMESTAMP-worktree-${AGENT_ID}-report.md"
LOG_FILE="$REPORT_DIR/$TIMESTAMP-worktree-${AGENT_ID}-benchmark-log.md"

Instructions

1. Read docs_dev/methodology-improvement-history.md and current main.rs
2. Run baseline benchmark BEFORE changes and record score
3. Make one change at a time, benchmark after each
4. Revert regressions -- document rejected approaches
5. Write report to $REPORT_FILE (resolved via the prologue above)
6. Write benchmark log to $LOG_FILE (same prologue)
7. Run cargo test and cargo build --release
8. Complete the Work Tracking Checklist

Token savings: Use mcp__plugin_llm-externalizer_llm-externalizer__code_task (when available) to analyze benchmark logs and scoring engine source. Use chat to compare log snapshots in parallel. Reserve Opus reasoning for scoring algorithm changes.

References

• Report Format -- mandatory sections 1-6
  • Section 1: Score Progression Table
  • Section 2: Change Details
    • Exact Code Diff
    • Formula / Algorithm Description
    • Why This Change (Hypothesis)
    • Per-Prompt Impact
    • Rejected Approach Details
  • Section 3: Structural Analysis
  • Section 4: Synonym Expansions Inventory
  • Section 5: Near-Miss Analysis
  • Section 6: Generalizability Self-Assessment
• Anti-Patterns -- mistakes to avoid
  • DO NOT write vague descriptions
  • DO NOT skip rejected approaches
  • DO NOT describe algorithms in prose only
  • DO NOT forget the baseline
• Sacred Parameters -- do not change
  • Validated scoring parameters and regression history
• Benchmark Tracking -- log format and rules
  • Benchmark Log Format
  • Rules
  • How to Run the Benchmark
• Work Tracking Checklist -- 5-phase checklist
  • Work tracker template for benchmark agents
• Examples and Resources -- commands and error handling
  • Output Files
  • Error Handling
  • Examples
  • Resources

Checklist

Copy this checklist and track your progress:

• Read history and current main.rs
• Run baseline benchmark and record score
• Make changes one at a time, benchmark each
• Revert regressions and document rejected approaches
• Write report and benchmark log
• Run cargo test and cargo build --release

Examples

cargo build --release && uv run scripts/pss_agent_benchmark.py --binary target/release/pss

Output

• $MAIN_ROOT/reports/pss-benchmark-agent/<TS±TZ>-worktree-{AGENT_ID}-report.md -- structured report with all mandatory sections
• $MAIN_ROOT/reports/pss-benchmark-agent/<TS±TZ>-worktree-{AGENT_ID}-benchmark-log.md -- per-prompt benchmark results (append-only)
• Timestamp is local time with GMT offset (e.g. 20260421_183012+0200). Both dirs are gitignored project-wide.
• Modified rust/skill-suggester/src/main.rs -- with improvements to the scoring engine

Error Handling

If the benchmark script fails or produces unexpected output, check docs_dev/methodology-improvement-history.md for known issues.

Resources

• rust/skill-suggester/src/main.rs — scoring engine
• docs_dev/benchmark-v2-prompts-100.jsonl — prompts
• docs_dev/benchmark-v2-gold-100.json — gold standard
• docs_dev/methodology-improvement-history.md — history