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Class ClientMessageMetadata

src/mcp/shared/message.py:22–28  ·  view source on GitHub ↗

Metadata specific to client messages.

Source from the content-addressed store, hash-verified

20
21@dataclass
22class ClientMessageMetadata:
23 """Metadata specific to client messages."""
24
25 resumption_token: ResumptionToken | None = None
26 on_resumption_token_update: Callable[[ResumptionToken], Awaitable[None]] | None = None
27 # Per-message HTTP headers (e.g. MCP-Protocol-Version, Mcp-Method) the transport should set.
28 headers: dict[str, str] | None = None
29
30
31@dataclass

Callers 8

_plan_outboundFunction · 0.90
test_post_request_merges_per_message_metadata_headersFunction · 0.90
test_initialize_post_clears_cached_pv_header_and_unstamped_posts_read_itFunction · 0.90
run_toolFunction · 0.90
test_streamable_http_client_resumptionFunction · 0.90
test_streamable_http_client_receives_priming_eventFunction · 0.90
test_streamable_http_multiple_reconnectionsFunction · 0.90
test_a_captured_resumption_token_replays_missed_messages_on_a_new_connectionFunction · 0.90

Calls

no outgoing calls

Tested by 7

test_post_request_merges_per_message_metadata_headersFunction · 0.72
test_initialize_post_clears_cached_pv_header_and_unstamped_posts_read_itFunction · 0.72
run_toolFunction · 0.72
test_streamable_http_client_resumptionFunction · 0.72
test_streamable_http_client_receives_priming_eventFunction · 0.72
test_streamable_http_multiple_reconnectionsFunction · 0.72
test_a_captured_resumption_token_replays_missed_messages_on_a_new_connectionFunction · 0.72