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Return -32602 for resource not found (SEP-2164) (#2920)

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Marcelo Trylesinski 2026-06-20 15:55:23 +01:00 • committed by GitHub
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1 changed files with 113 additions and 43 deletions
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16
tests/interaction/_requirements.py
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@ -1142,8 +1142,10 @@ REQUIREMENTS: dict[str, Requirement] = {
),
"mcpserver:resource:read-throws-surfaced": Requirement(
source="sdk",
behavior="A resource function that raises is surfaced to the caller as a JSON-RPC error response.",
arm_exclusions=(ArmExclusion(reason="modern-error-surface", spec_version="2026-07-28"),),
behavior=(
"A resource function that raises is surfaced to the caller as a JSON-RPC error response "
"(-32603 Internal error), with the original exception text withheld."
),
),
"mcpserver:resource:static": Requirement(
source="sdk",
@ -1161,14 +1163,10 @@ REQUIREMENTS: dict[str, Requirement] = {
),
"mcpserver:resource:unknown-uri": Requirement(
source=f"{SPEC_BASE_URL}/server/resources#error-handling",
behavior="resources/read for a URI matching no registered resource returns JSON-RPC error -32002.",
divergence=Divergence(
note=(
"The spec reserves -32002 for resource-not-found; MCPServer raises ResourceError, which "
"the low-level server converts to error code 0."
),
behavior=(
"resources/read for a URI matching no registered resource returns JSON-RPC error -32602 "
"(invalid params) with the requested URI in error.data, per SEP-2164."
),
arm_exclusions=(ArmExclusion(reason="modern-error-surface", spec_version="2026-07-28"),),
),
# ═══════════════════════════════════════════════════════════════════════════
# Prompts