# Harness RL - Agentic Harness Performance Catalog

> Authoritative catalog for coding agent harnesses, models, and benchmarks: Terminal-Bench, SWE-rebench, SWE-bench Verified, WildClawBench, HAL (9 boards + reliability), HRL rankings, agent cost ($/task, tokens), latency, and OpenRouter pricing.

## Canonical site
https://harness-gym.com

## Structured JSON API (preferred for agents)
All endpoints return JSON. Public, cacheable, rate-limited per IP. OpenAPI: https://harness-gym.com/catalog-openapi.json

- GET https://harness-gym.com/api/catalog/overview - featured harnesses, benchmark counts, ingest metadata
- GET https://harness-gym.com/api/catalog/stats - entity counts and freshness
- GET https://harness-gym.com/api/catalog/harnesses - all harnesses with HRL rank and best scores
- GET https://harness-gym.com/api/catalog/harnesses/{slug} - harness detail, all benchmark scores, cost, tokens
- GET https://harness-gym.com/api/catalog/models - scored models with OpenRouter pricing
- GET https://harness-gym.com/api/catalog/models/{slug} - model detail, scores per harness/benchmark
- GET https://harness-gym.com/api/catalog/benchmarks - benchmark directory
- GET https://harness-gym.com/api/catalog/benchmarks/{slug} - benchmark detail and rankings
- GET https://harness-gym.com/api/catalog/rankings?benchmark=swe-bench-verified&sort=success_rate&limit=100
- GET https://harness-gym.com/api/catalog/trending?limit=50

## Score row fields (cost & performance)
success_rate, resolved_count, total_count, cost_usd, input_tokens, output_tokens, latency_ms, temperature, max_turns, context_budget_tokens, eval_protocol, source, source_url, observed_at

## Bulk feeds (JSON snapshots)
- GET https://harness-gym.com/feeds/catalog.json - all slugs, top metrics, API map
- GET https://harness-gym.com/feeds/rankings/{benchmark_slug}.json - full leaderboard per benchmark

## Human-readable pages
- https://harness-gym.com/ - home overview
- https://harness-gym.com/harnesses / https://harness-gym.com/harnesses/{slug}
- https://harness-gym.com/models / https://harness-gym.com/models/{slug}
- https://harness-gym.com/benchmarks / https://harness-gym.com/benchmarks/{slug}
- https://harness-gym.com/learn/why-training-the-harness
- https://harness-gym.com/learn/harness-architectures
- https://harness-gym.com/learn/find-my-harness
- https://harness-gym.com/learn/submit-missing

## Discovery
- Sitemap index: https://harness-gym.com/sitemap.xml
- Robots: https://harness-gym.com/robots.txt
- Extended docs: https://harness-gym.com/llms-full.txt
- AI plugin: https://harness-gym.com/.well-known/ai-plugin.json

## Not public catalog data (auth required)
- https://harness-gym.com/train - training dashboard (Clerk auth)
- /api/runs, /api/snapshots, /api/analysis - training telemetry APIs