Technical appendix
The emerging agent-computing stack.
A reference map for the layers around intelligence. Field Runtime selects and combines them according to the work—not allegiance to a single vendor.
FR / REFERENCE V1.0
REFERENCE MAP / V1.0
Models are the processor. Runtimes provide persistence and execution. Harnesses become the application. The surrounding layers make the system connected, observable, governable, and useful.
| Agentic layer | Projects | Traditional analogy | What it actually does |
|---|---|---|---|
| 01Intelligence | GPT · Claude · Gemini · open models | CPU / processor | Reasons and generates actions, but does not provide durable identity, memory, scheduling, permissions, or execution by itself. |
| 02Personal agent runtime | Hermes Agent · OpenClaw | Operating system | Maintains a persistent agent, connects channels and tools, schedules work, manages memory and subagents, and mediates model access. |
| 03Evolutionary agent runtime | Exo | A self-hosting OS that can rewrite its kernel | Can inspect and modify prompts, memory, tools, policies, and code; rebuild, restart, rewind, and preserve lineage. |
| 04Application orchestration | LangGraph | Spring · Django · Temporal | Provides durable execution, state machines, deterministic and agentic steps, persistence, and human checkpoints. |
| 05Domain harness | Support · revenue · incident agents | Excel · Salesforce · SAP | Encodes a job: procedure, context, tools, approval boundaries, exception handling, tests, and measurable outcomes. |
| 06Capability package | Agent Skills | npm package · plugin · driver | Packages instructions, scripts, references, and templates into portable, version-controlled capabilities. |
| 07Tool and data interface | MCP | USB-C + device-driver interface | Standardizes how agents connect to tools, databases, applications, and workflows. It solves connectivity, not business logic. |
| 08Agent–client interface | ACP | Language Server Protocol | Standardizes communication between coding agents and clients such as editors and workspaces. |
| 09Agent-to-agent network | A2A | TCP/IP · HTTP · EDI | Lets independently built agent applications discover capabilities, exchange tasks, and collaborate. |
| 10Persistent memory | Letta | Virtual memory + stateful database | Provides durable state and advanced memory so an agent can retain experience over longer periods. |
| 11Secure execution | E2B | Containers · VMs · process isolation | Gives agents isolated computers for generated code and commands without unrestricted host access. |
| 12Observability and evaluation | Phoenix | Debugger + Datadog + test lab | Records traces, evaluates outputs, manages datasets and experiments, and diagnoses agent failures. |
| 13Multiplayer work environment | Buzz | Slack + GitHub + Jenkins + multiplayer desktop | Gives humans, agents, workflows, code events, approvals, search, and signed history a shared operating surface. |
Field Runtime is an independent implementation company. Project names identify technologies we can evaluate, deploy, and integrate; no affiliation or endorsement is implied.