01 / THE AGENT HARNESS

THE MODEL POWERS REASONING. THE HARNESS SHAPES SOUL AND BOUNDARIES.

Core persona, system instructions, skills, and tool policies define an Agent's behavioral envelope and cognitive loop. CORE encapsulates this architecture into immutable releases, committing state digests directly to the onchain distribution record.

CORE OBJECT / MANIFESTAGENT HARNESS

Persona, purpose, policies, and behavioral constraints

01SOUL.md
02SYSTEM INSTRUCTIONS
03SKILLS
04WORKFLOWS
05TOOL POLICIES
06TOOLS
07RUNTIME / LLM ENVIRONMENT

A MODEL CAN REASON.A HARNESS GIVES THAT REASON A SHAPE.
Raw compute and reasoning flow from the model; direction, boundaries, and operational modes are governed by the Harness. CORE builds the foundations for origin, evolution, and economic coordination.

CORE THESIS / SPECIALIZATION

Harnesses will become radically specialized.

We believe specialization and localization are what let Agent capabilities reach their maximum. A Harness built around a specific person, organization, workflow, domain, data environment, and tool boundary can develop judgment that a generic service cannot reproduce.

A generic, shared online Agent designed for everyone can only solve generic, average problems. The most capable Harnesses will be narrow in purpose, deeply localized, and owned close to the people who use them.

CORE / EXTERNAL HARNESS REFERENCES

SEE HOW HARNESS SYSTEMS ARE BEING BUILT TODAY.

These public projects sit outside CORE and are shown only as references. They are not part of the CORE Registry and have not been registered, verified, or licensed through CORE.

EXTERNAL / NOT IN CORE REGISTRY

PLUGIN-COMPOSED RUNTIME

DeepSeek Harness

DeepSeek's open-source, everything-is-a-plugin harness for composing models, tools, skills, sessions, sandboxes, and UI.

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EXTERNAL / NOT IN CORE REGISTRY

MULTIPLAYER AGENT HARNESS

QM / YC Software

Y Combinator's open-source multiplayer harness for work, with isolated personal and project scopes, shared memory, and collaboration.

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EXTERNAL / NOT IN CORE REGISTRY

BATTERIES-INCLUDED AGENT HARNESS

Deep Agents

LangChain's open-source agent harness bundles sub-agents, filesystem access, context management, persistent memory, skills, and tools in an extensible system.

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APPLICATION LAYER / PRODUCT SERVICES

Turn a Harness into a product people can access repeatedly.

CORE’s application layer will support the commercial lifecycle around Harness products, so a verifiable lineage can become a usable service rather than stopping at a registry entry.

Purchase

Acquire a defined Harness release and bind the corresponding access or Usage Right to the buyer.

Subscription

Support recurring access, ongoing updates, and service terms without erasing the identity of the underlying Harness.

Data API usage

Let developers package the data APIs required by a Harness and receive usage-based revenue alongside licensing fees.

Purchase, paid subscription, and metered Data API billing are planned product capabilities and are not enabled by the current V1 beta contracts.