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Define the view capability contract - #472
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SaladDay merged 2 commits intoOct 7, 2026
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View.Capabilities declares what each agent-host view runs, and admission follows it with no second mask: environment none, resolved Skills, function tools and results, tool search and stdio MCP. Every adapter declares them unsupported until the agent host builds and qualifies them. Whatever a view declares, the agent host rejects a Session without strict resume, with a restricted network, with a credentialed stdio binding, with installed Capabilities that no preparation resolved, or with neither a workspace nor environment none. The contract fixes the stdio alias, the empty-root view and the environment rule.
This was referenced Oct 7, 2026
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Defines the agent-host view capability contract, so that the next lanes (the host's preparation and each adapter) can turn on capabilities one by one through declarations instead of hard-coded rejections.
What changes
agent.View.Capabilities(ViewCapabilities) declares environment none, Skills, function tools, function-result images, tool search and stdio MCP.View.Validaterequires each field to be set explicitly. Agent-host admission follows the declarations, with no second mask. Every adapter keeps today's behavior: whatever its view rejected before stays declared unsupported.ViewPrivateRoot/home/work, no world, shims, Link or sandbox network). A request with neither a workspace norDisableExecutionEnvironmentis an incomplete binding.iruns under the shim aliasagent.ViewAlias(i), which the process broker maps to the frozen command, args and cwd. A credentialed stdio binding is a typedErrViewHandoffrejection, whatever the view declares.Launchenv. The request carries no environment values, and model and MCP credentials stay in the gateway's protected configuration.harness-onboarding.md(en + zh) documents the contract.Not in this PR
The producers of empty-root views, stdio aliases and prepared Skills come with the host lane, and each adapter flips its declarations as its lane qualifies them.
Checks
go testfor agent, codex, mcode, claudesdk, viewloader, agenthost, gateway and dispatch.-race -count=50on the changed agenthost and agent tests.gofmtandgo vet, plus the darwin and windows builds ofapps/daemon.make check-names check-docs check-ci, and the website translation test.Need help on this PR? Tag
@codesmith-botwith what you need. Autofix is disabled.