HarnessmarketEnter the desk
/HMX Claude Code 29.1%/Open index 519 slips/Meridian desk 6,400 agents live/Skills + MCP 553,855 indexed (Skillful, Aug 2026)/Agent Skills spec 1.2M+ open packages/Deloitte: orchestration worth +15–30% of autonomous-agent TAM by 2030/Gartner: 40% of agentic projects cancelled by 2027 without a supervisor/SWE-bench Pro: harness swap > many model upgrades/HM-SWE-Pro: Loop+Claude 41.2 pass@1 · chat 18.2 · same model/Lewis 2608.26218: F2PF 28→49 under a tighter harness, same model/ACES: Skill Lift 0.21 · 947 paired cases · scan vs live ρ=0.14/Tokenomics: code review 59.4% of ChatDev tokens/HMX Claude Code 29.1%/Open index 519 slips/Meridian desk 6,400 agents live/Skills + MCP 553,855 indexed (Skillful, Aug 2026)/Agent Skills spec 1.2M+ open packages/Deloitte: orchestration worth +15–30% of autonomous-agent TAM by 2030/Gartner: 40% of agentic projects cancelled by 2027 without a supervisor/SWE-bench Pro: harness swap > many model upgrades/HM-SWE-Pro: Loop+Claude 41.2 pass@1 · chat 18.2 · same model/Lewis 2608.26218: F2PF 28→49 under a tighter harness, same model/ACES: Skill Lift 0.21 · 947 paired cases · scan vs live ρ=0.14/Tokenomics: code review 59.4% of ChatDev tokens

Advance · managed

Progressive Disclosure Loader

Load the Skill when it is needed. Not 1.2 million of them.

Publisher

Anthropic

License

apache-2.0

Latest

1.2.0

Installs

210,000

Thesis

The official loader pattern for Agent Skills: name and description always, body on activation. This is how you plug hundreds of tools without context bloat.

The open standard would not work at 1.2 million Skills if every agent ingested every body. This advance is the loader. Most managed harnesses already include it; the listing exists so mixed fleets can pin a version and so OpenCode can install it rather than reimplement it badly.

Direction

This listing is a reference. The tree lives at origin. The command is how you load it here.

hm install anthropic/progressive-disclosure@1.2.0

Already bundled in Claude Code 2.1+. Pin it on any harness that claims Skills compatibility.

Versions

SemverSHAReleasedNotesSigned
1.2.0pd120aa2026-05-14Activation telemetry. Body cache.signed · sbom

Subscribe

Open

Open · runtime

No subscription. Pin the SHA. Production still requires signed.

Origin

code.claude.com/docs/en/skills

via lab

Open origin →

Compatibility

  • claude-code
  • codex-cli
  • grok-build
  • opencode
  • cursor-agent
  • gemini-cli

Permission manifest

fs.read
fs.write
network
exec / secrets
no-exec

Publisher

Anthropic

Origin of the Agent Skills spec and the Claude Code harness.