RUN-022: Ship EBTO x402 rail + AGT HMAC endpoint (observatory v1.1.0)

[vdineshk]

Summary

• P0 INFRA-RECOVERY: Both EBTO /agent-query/ and AGT /api/agent-query/ were returning 404/wrong response. Shipped and verified live.
• Novel primitive claimed (C4 PASS): x402-gated MCP Server Runtime Behavioral Trust Query — agents pay $0.001 USDC on Base to receive a trust verdict backed by 60+ days of runtime probe data on 4,584 servers. No prior art for server-scoring; existing art (DJD Agent Score, AgentStamp) scores agent wallets.
• HARD RULES 5-7 compliant: wrangler dry-run ✓, PAYMENT_WALLET in wrangler.toml [vars] ✓, AGENT_HMAC_SECRET via wrangler secret put ✓.
• P-021B-rev satisfied: x402-aware Cloudflare Worker route live 1 day before D26 deadline.

What shipped

File	Change
dominion-observatory/src/index.js	+131 lines: /agent-query/{slug} (x402) + /api/agent-query/{slug} (HMAC) routes
dominion-observatory/wrangler.toml	Added [vars] section with PAYMENT_WALLET
dominion-observatory/config/post-deploy-health.json	New: POST_DEPLOY_VERIFY_HEALTH spec (HARD RULE 6)
DINESH-READ-ME.md	D19 → D23 refresh
decisions/2026-04-29-run-022-diagnosis.md	AWAKEN + C4 prior-art log
decisions/2026-04-29-run-022-daily-report.md	Full EVOLVE report

POST_DEPLOY_VERIFY_HEALTH results (all passed)

• GET /agent-query/sg-cpf-calculator-mcp → HTTP 402, wallet_status:configured, to:0xCF8C01f1EFc61fA0eCc7614Ed1fA8f668D9aA8A2 ✓
• GET /api/agent-query/sg-cpf-calculator-mcp → HTTP 402, payment_required:true, auth_type:hmac ✓
• Trust verdict (with X-PAYMENT header): trust_score:92.4, verdict:TRUSTED ✓
• /api/stats regression: total_servers_tracked:4584 ✓

CEO actions needed

1. UptimeRobot keyword monitor (3 min): URL https://dominion-observatory.sgdata.workers.dev/agent-query/sg-cpf-calculator-mcp, keyword wallet_status":"configured, alert if NOT found, 5-min interval.
2. Verify Base wallet 0xCF8C01f1EFc61fA0eCc7614Ed1fA8f668D9aA8A2 is your Coinbase Wallet on Base mainnet.

Test plan

• Verify curl -s https://dominion-observatory.sgdata.workers.dev/agent-query/sg-cpf-calculator-mcp returns HTTP 402 with wallet_status":"configured"
• Verify curl -s https://dominion-observatory.sgdata.workers.dev/api/agent-query/sg-cpf-calculator-mcp returns HTTP 402 with hmac_challenge
• Verify curl -s -H "X-PAYMENT: test" https://dominion-observatory.sgdata.workers.dev/agent-query/sg-cpf-calculator-mcp returns trust verdict JSON

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