# Agent Runtime

> Agent Runtime is a portable standard for agent execution runtimes. It defines execution facts, control-plane commands, durable snapshots, task lifecycle, tools, permissions, sandboxing, process execution, model routing, telemetry, remote channels, evidence, and recovery without binding those behaviors to one UI, provider, or tool protocol.

Use this file as the concise navigation index for LLMs. Use `llms-full.txt` when a single prompt needs the current core documentation in one markdown file.

## Full context

- [llms-full.txt](https://limecloud.github.io/agentruntime/llms-full.txt): Concatenated current English documentation with source URLs.

## Primary docs

- [What is Agent Runtime?](https://limecloud.github.io/agentruntime/en/what-is-agent-runtime): Conceptual entry point and scope.
- [Specification](https://limecloud.github.io/agentruntime/en/specification): Latest portable Agent Runtime specification.
- [Runtime model](https://limecloud.github.io/agentruntime/en/concepts/runtime-model): Identity hierarchy and runtime model.
- [Acceptance scenarios](https://limecloud.github.io/agentruntime/en/authoring/acceptance-scenarios): Behavior-level validation scenarios.

## Contracts

- [Runtime event stream](https://limecloud.github.io/agentruntime/en/contracts/runtime-event-stream): Canonical execution fact stream.
- [Control plane](https://limecloud.github.io/agentruntime/en/contracts/control-plane): Commands and mutation boundaries.
- [Tool and context](https://limecloud.github.io/agentruntime/en/contracts/tool-context-capabilities): Tool inventory, context, and capability resolution.
- [State snapshots](https://limecloud.github.io/agentruntime/en/contracts/state-snapshots): Durable read models and recovery.
- [Evidence and replay](https://limecloud.github.io/agentruntime/en/contracts/evidence-replay): Evidence export, replay, and audit boundaries.
- [Permission and sandbox](https://limecloud.github.io/agentruntime/en/contracts/permission-and-sandbox): Permission, policy, and sandbox facts.
- [Hooks and policy](https://limecloud.github.io/agentruntime/en/contracts/hooks-and-policy): Hook lifecycle and governance facts.
- [Execution environment](https://limecloud.github.io/agentruntime/en/contracts/execution-environment): Processes, cwd, environment, and runner facts.
- [Model routing and limits](https://limecloud.github.io/agentruntime/en/contracts/model-routing-limits): Model selection, fallback, cost, quota, and limits.
- [Agent task](https://limecloud.github.io/agentruntime/en/contracts/agent-task): Task lifecycle, attempts, graphs, and peer task refs.
- [Subagents and jobs](https://limecloud.github.io/agentruntime/en/contracts/subagents-and-jobs): Child agents and batch/background jobs.
- [Remote channels](https://limecloud.github.io/agentruntime/en/contracts/remote-channels): Remote peer channels and A2A alignment.
- [Telemetry and tracing](https://limecloud.github.io/agentruntime/en/contracts/telemetry-tracing): Traces, spans, and correlation ids.
- [Session history and recovery](https://limecloud.github.io/agentruntime/en/contracts/session-history-recovery): History windows, compaction, and recovery.
- [Output storage](https://limecloud.github.io/agentruntime/en/contracts/output-storage-large-results): Large output references and storage.

## Authoring and examples

- [Implementation quickstart](https://limecloud.github.io/agentruntime/en/authoring/quickstart): Implementation quickstart.
- [Basic runtime adapter](https://limecloud.github.io/agentruntime/en/examples/basic-runtime-adapter): Reference adapter example.

## Reference

- [Glossary](https://limecloud.github.io/agentruntime/en/reference/glossary): Terms used by the standard.
- [Ecosystem boundaries](https://limecloud.github.io/agentruntime/en/reference/ecosystem-boundaries): Boundaries with adjacent systems.
- [Research sources](https://limecloud.github.io/agentruntime/en/reference/research-sources): External sources used to shape the standard.
- [Source analysis](https://limecloud.github.io/agentruntime/en/reference/source-analysis): Implementation pressure mapped into standard surfaces.

## Ecosystem

- [Agent standards ecosystem](https://limecloud.github.io/agentruntime/en/reference/agent-ecosystem): Mutual links across Agent Knowledge, Agent UI, Agent Runtime, Agent Evidence, Agent Policy, Agent Artifact, Agent Tool, and Agent Context.
- [Agent Policy](https://limecloud.github.io/agentpolicy/): Policy decisions, approvals, permissions, risk, retention, waivers, and traces.
- [Agent Artifact](https://limecloud.github.io/agentartifact/): Durable deliverables, versions, parts, previews, exports, and handoff packages.
- [Agent Tool](https://limecloud.github.io/agenttool/): Tool declarations, surfaces, invocations, progress, results, permissions, and audit refs.
- [Agent Context](https://limecloud.github.io/agentcontext/): Context surfaces, items, source refs, selection, budgets, assembly, injection, compaction, and missing-context facts.

## Versions

- [v0.3.9 overview](https://limecloud.github.io/agentruntime/en/versions/v0.3.9/overview): Latest released version overview.
- [v0.3.9 specification snapshot](https://limecloud.github.io/agentruntime/en/versions/v0.3.9/specification): Latest released specification snapshot.
- [v0.3.8 overview](https://limecloud.github.io/agentruntime/en/versions/v0.3.8/overview): Latest released version overview.
- [v0.3.8 specification snapshot](https://limecloud.github.io/agentruntime/en/versions/v0.3.8/specification): Latest released specification snapshot.
- [v0.3.7 overview](https://limecloud.github.io/agentruntime/en/versions/v0.3.7/overview): Previous released version overview.
- [v0.3.7 specification snapshot](https://limecloud.github.io/agentruntime/en/versions/v0.3.7/specification): Previous released specification snapshot.
- [v0.3.6 overview](https://limecloud.github.io/agentruntime/en/versions/v0.3.6/overview): Previous released version overview.
- [v0.3.6 specification snapshot](https://limecloud.github.io/agentruntime/en/versions/v0.3.6/specification): Previous released specification snapshot.
- [v0.3.5 overview](https://limecloud.github.io/agentruntime/en/versions/v0.3.5/overview): Previous released version overview.
- [v0.3.5 specification snapshot](https://limecloud.github.io/agentruntime/en/versions/v0.3.5/specification): Previous released specification snapshot.
- [v0.3.4 overview](https://limecloud.github.io/agentruntime/en/versions/v0.3.4/overview): Previous released version overview.
- [v0.3.4 specification snapshot](https://limecloud.github.io/agentruntime/en/versions/v0.3.4/specification): Previous released specification snapshot.
- [v0.3.3 overview](https://limecloud.github.io/agentruntime/en/versions/v0.3.3/overview): Previous released version overview.
- [v0.3.3 specification snapshot](https://limecloud.github.io/agentruntime/en/versions/v0.3.3/specification): Previous released specification snapshot.
- [v0.3.2 overview](https://limecloud.github.io/agentruntime/en/versions/v0.3.2/overview): Previous released version overview.
- [v0.3.2 specification snapshot](https://limecloud.github.io/agentruntime/en/versions/v0.3.2/specification): Previous released specification snapshot.

## Schemas

- [Agent Runtime event schema](https://limecloud.github.io/agentruntime/schemas/agentruntime-event.schema.json): Public runtime event schema.
- [Agent Runtime snapshot schema](https://limecloud.github.io/agentruntime/schemas/agentruntime-snapshot.schema.json): Public snapshot schema.

## Language mirrors

- Chinese documentation is available under `/zh/` with matching page structure where translated pages exist.