Capability Matrix

This page renders only capability rows the backend release registry marks eligible for public claims. It shows customer-facing operation support by provider, mode, modality, streaming availability, enforcement classification, release maturity, and known limitations.

The matrix is intentionally limited to integration planning details. It does not document adapter internals, routing heuristics, detector behavior, or provider-key handling.

Only rows marked eligible for public claims by the backend release registry are shown. Enforcement and maturity are separate: a mounted route may still be limited, observed-only, or externally enforced.

Provider capability matrix.
Provider	Operation	Modes	Modalities	Streaming	Enforcement	Maturity	Limits
Anthropic	`generate.text`	async, stream, sync	image, text	Yes	Keel Enforced	Released	Operation coverage varies by provider. Provider-native sub-tools are not individually intercepted unless they use another named Keel route.
elevenlabs	`generate.audio`	async, sync	audio	No	Keel Enforced	Released	Operation coverage varies by provider. Provider-native sub-tools are not individually intercepted unless they use another named Keel route.
elevenlabs	`transcribe.audio`	async, sync	audio	No	Keel Enforced	Released	Operation coverage varies by provider. Provider-native sub-tools are not individually intercepted unless they use another named Keel route.
Google	`embed.text`	async, sync	text	No	Keel Enforced	Released	Operation coverage varies by provider. Provider-native sub-tools are not individually intercepted unless they use another named Keel route.
Google	`generate.text`	async, stream, sync	image, text	Yes	Keel Enforced	Released	Operation coverage varies by provider. Provider-native sub-tools are not individually intercepted unless they use another named Keel route.
Google	`transcribe.audio`	async, sync	audio	No	Keel Enforced	Released	Operation coverage varies by provider. Provider-native sub-tools are not individually intercepted unless they use another named Keel route.
Google	`understand.image`	async, stream, sync	image	Yes	Keel Enforced	Released	Operation coverage varies by provider. Provider-native sub-tools are not individually intercepted unless they use another named Keel route.
MCP	`mcp_tool_call_evidence_emission`	sync	text	No	Observed	Released	Evidence availability does not turn an external-enforcement path into Keel-managed dispatch.
OpenAI	`embed.text`	async, sync	text	No	Keel Enforced	Released	Operation coverage varies by provider. Provider-native sub-tools are not individually intercepted unless they use another named Keel route.
OpenAI	`generate.audio`	async, sync	audio	No	Keel Enforced	Released	Operation coverage varies by provider. Provider-native sub-tools are not individually intercepted unless they use another named Keel route.
OpenAI	`generate.image`	async, sync	image	No	Keel Enforced	Released	Operation coverage varies by provider. Provider-native sub-tools are not individually intercepted unless they use another named Keel route.
OpenAI	`generate.text`	async, stream, sync	image, text	Yes	Keel Enforced	Released	Operation coverage varies by provider. Provider-native sub-tools are not individually intercepted unless they use another named Keel route.
OpenAI	`transcribe.audio`	async, sync	audio	No	Keel Enforced	Released	Operation coverage varies by provider. Provider-native sub-tools are not individually intercepted unless they use another named Keel route.
OpenAI	`understand.image`	async, stream, sync	image	Yes	Keel Enforced	Released	Operation coverage varies by provider. Provider-native sub-tools are not individually intercepted unless they use another named Keel route.
Search	`search_policy_evidence`	sync	text	No	Observed	Observed	Do not describe this capability as Keel-enforced search dispatch.
vocal_bridge	`call.outbound`	async, sync	audio, text	No	Keel Enforced	Beta Limited	This does not cover arbitrary voice providers, media transport, or off-path tools.
xAI	`generate.text`	async, stream, sync	text	Yes	Keel Enforced	Released	Operation coverage varies by provider. Provider-native sub-tools are not individually intercepted unless they use another named Keel route.

Use Provider Support for provider-level caveats and Executions for request examples.