fix(gateway): fix semantic search invoke.py response parsing

[jyotsnamas]

Summary

• scripts/semantic-search/invoke.py parses the wrong response path for the x_amz_bedrock_agentcore_search tool
• Before: result.get("result", {}).get("structuredContent", {}).get("tools", []) — always returns []
• After: json.loads(result.get("result", {}).get("content", [])[0]["text"]).get("tools", []) — returns actual results
• Also adds missing import json

Root cause

The semantic search tool returns results as a JSON string inside result.content[0].text, not in result.structuredContent. The script silently returned empty tool lists.

Test plan

• Verified against live gateway with 318 tools — search for "credit research tools" returns 3 relevant matches
• Verified search for "restaurant reservation" and "multiplying two numbers" also return correct results
• Confirmed response format: {"result": {"content": [{"type": "text", "text": "{\"tools\": [...]}"}]}}

🤖 Generated with Claude Code

[github-actions]

Latest scan for commit: 47b04b0 | Updated: 2026-08-13 20:18:52 UTC

Security Scan Results

Scan Metadata

• Project: ASH
• Scan executed: 2026-08-13T20:18:38+00:00
• ASH version: 3.0.0

Summary

Scanner Results

The table below shows findings by scanner, with status based on severity thresholds and dependencies:

Column Explanations:

Severity Levels (S/C/H/M/L/I):

• Suppressed (S): Security findings that have been explicitly suppressed/ignored and don't affect the scanner's pass/fail status
• Critical (C): The most severe security vulnerabilities requiring immediate remediation (e.g., SQL injection, remote code execution)
• High (H): Serious security vulnerabilities that should be addressed promptly (e.g., authentication bypasses, privilege escalation)
• Medium (M): Moderate security risks that should be addressed in normal development cycles (e.g., weak encryption, input validation issues)
• Low (L): Minor security concerns with limited impact (e.g., information disclosure, weak recommendations)
• Info (I): Informational findings for awareness with minimal security risk (e.g., code quality suggestions, best practice recommendations)

Other Columns:

• Time: Duration taken by each scanner to complete its analysis
• Action: Total number of actionable findings at or above the configured severity threshold that require attention

Scanner Results:

• PASSED: Scanner found no security issues at or above the configured severity threshold - code is clean for this scanner
• FAILED: Scanner found security vulnerabilities at or above the threshold that require attention and remediation
• MISSING: Scanner could not run because required dependencies/tools are not installed or available
• SKIPPED: Scanner was intentionally disabled or excluded from this scan
• ERROR: Scanner encountered an execution error and could not complete successfully

Severity Thresholds (Thresh Column):

• CRITICAL: Only Critical severity findings cause scanner to fail
• HIGH: High and Critical severity findings cause scanner to fail
• MEDIUM (MED): Medium, High, and Critical severity findings cause scanner to fail
• LOW: Low, Medium, High, and Critical severity findings cause scanner to fail
• ALL: Any finding of any severity level causes scanner to fail

Threshold Source: Values in parentheses indicate where the threshold is configured:

• (g) = global: Set in the global_settings section of ASH configuration
• (c) = config: Set in the individual scanner configuration section
• (s) = scanner: Default threshold built into the scanner itself

Statistics calculation:

• All statistics are calculated from the final aggregated SARIF report
• Suppressed findings are counted separately and do not contribute to actionable findings
• Scanner status is determined by comparing actionable findings to the threshold

Scanner	S	C	H	M	L	I	Time	Action	Result	Thresh
bandit	0	0	0	0	0	0	387ms	0	PASSED	MED (g)
cdk-nag	0	0	0	0	0	0	5.7s	0	PASSED	MED (g)
cfn-nag	0	0	0	0	0	0	8ms	0	PASSED	MED (g)
checkov	0	0	0	0	0	0	4.7s	0	PASSED	MED (g)
detect-secrets	0	0	0	0	0	0	981ms	0	PASSED	MED (g)
grype	0	0	0	0	0	0	56.4s	0	PASSED	MED (g)
npm-audit	0	0	0	0	0	0	271ms	0	PASSED	MED (g)
opengrep	0	0	0	0	0	0	<1ms	0	SKIPPED	MED (g)
semgrep	0	0	0	0	0	0	<1ms	0	MISSING	MED (g)
syft	0	0	0	0	0	0	2.3s	0	PASSED	MED (g)