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Protocol started by AUVY building

HCP

An open format for installing agent capabilities together with their rules, tools and tests.

In one line
“Harness Context Protocol.”

harnesscontextprotocol.dev

← AUVY for Europe

my-capability/

├─ surface.json what it can do: verbs, inputs, transports

├─ policy.json what it may do: read, write, ask a person first

└─ HARNESS.md how to run it, for people and agents

{
  "id": "my-capability",
  "hcp": { "hcp": 1, "adapter_kind": "wrap", "transports": ["cli", "json_exec"] },
  "verbs": {
    "status": { "path": ["status"], "policy": "read", "help": "Health" },
    "send":   { "path": ["send"],   "policy": "write", "help": "Asks a person first" }
  }
}
The format

Why it exists

Agents get new abilities all the time, but every tool arrives in its own shape. Nobody can see at a glance what it may do, what needs a person, and how to run it.

An HCP is three plain files: what the capability can do, what it's allowed to do, and how to run it. Any agent host can read them. AUVY installs every capability this way.

For
Anyone building agents who wants them to install cleanly.
Where it stands
Opening to developers at harnesscontextprotocol.dev.

What happens next

  1. 1

    Open the specification to developers

  2. 2

    Publish the pack rules and a reference

  3. 3

    Index it publicly once the legal details are complete

The company

Stage
building
Legal
Its own company
Run by
AUVY, until it has its own team
Infrastructure
Its own EU cluster
Runs on
Its own siteAgent runtime
Site
harnesscontextprotocol.dev

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