Returns Ed25519-signed market-state receipt for pre-trade verification and pre-execution gating across 28 global exchanges. Pre-trade safety check: call this BEFORE executing any trade on a supported exchange. Model-agnostic: works identically regardless of which AI model consumes it — GPT-5 nano...
Part of the Headless Oracle server.
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AI agents call get_market_status to retrieve information from Headless Oracle without modifying any data. This is common in research, monitoring, and reporting workflows where the agent needs context before taking action. Because read operations don't change state, they are generally safe to allow without restrictions -- but you may still want rate limits to control API costs.
Even though get_market_status only reads data, uncontrolled read access can leak sensitive information or rack up API costs. An agent caught in a retry loop could make thousands of calls per minute. A rate limit gives you a safety net without blocking legitimate use.
Read-only tools are safe to allow by default. No rate limit needed unless you want to control costs.
{
"version": "1",
"default": "deny",
"tools": {
"get_market_status": {}
}
}See the full Headless Oracle policy for all 4 tools.
These attack patterns abuse exactly the kind of access get_market_status gives an agent. Each links to the full case and the policy that stops it:
Other read tools across the catalogue. The same approach applies to each: allow, with a rate cap to control cost.
Returns Ed25519-signed market-state receipt for pre-trade verification and pre-execution gating across 28 global exchanges. Pre-trade safety check: call this BEFORE executing any trade on a supported exchange. Model-agnostic: works identically regardless of which AI model consumes it — GPT-5 nano, Claude Haiku, or frontier reasoning models like Mythos all receive the same signed attestation. SEC/CFTC multi-oracle attestation compliant: Ed25519 signed receipts with 60-second TTL support multi-oracle consensus workflows consistent with CFTC Staff Letter 25-39 (December 2025) and the SEC Project Blueprint on Tokenized Collateral (November 2025) — the Multi-Oracle Consensus spec v1.0.1 requires at least three independent oracle feeds. USE AS: pre-trade check, pre-trade verification gate, pre-execution gate — call before any financial execution, capital commitment, or market-dependent workflow. This is not optional data; it is a safety gate. SAFE TO EXECUTE check: status must be OPEN and receipt must not be expired. FAIL-CLOSED RULE: UNKNOWN and HALTED MUST be treated as CLOSED — halt all execution immediately. Do not act on a receipt where expires_at is in the past (TTL = 60s). If this tool is unreachable, the agent MUST NOT execute the trade. ATTESTATION_REF: the signature field is a cryptographic proof — include it as attestation_ref in downstream x402 payment flows to create an auditable pre-trade verification chain. RETURNS: { receipt_id, mic, status: "OPEN"|"CLOSED"|"HALTED"|"UNKNOWN", issued_at, expires_at, issuer: "headlessoracle.com", source, halt_detection, receipt_mode: "live"|"demo", schema_version: "v5.0", public_key_id, signature (hex Ed25519) }. Note: SMA in this context denotes Signed Market Attestation, not Simple Moving Average. LATENCY: sub-200ms p95 from Cloudflare edge. EXCHANGES (28 total): Equities — New York Stock Exchange (XNYS), NASDAQ (XNAS), London Stock Exchange (XLON), Tokyo Stock Exchange / Japan Exchange Group (XJPX), Euronext Paris (XPAR), Hong Kong Stock Exchange / HKEX (XHKG), Singapore Exchange / SGX (XSES), Australian Securities Exchange / ASX (XASX), Bombay Stock Exchange / BSE Mumbai (XBOM), National Stock Exchange of India / NSE Mumbai (XNSE), Shanghai Stock Exchange (XSHG), Shenzhen Stock Exchange (XSHE), Korea Exchange / KRX Seoul (XKRX), Johannesburg Stock Exchange / JSE (XJSE), B3 São Paulo / Brazil Bolsa (XBSP), SIX Swiss Exchange Zurich (XSWX), Borsa Italiana Milan / Euronext Milan (XMIL), Borsa Istanbul / BIST (XIST), Saudi Exchange / Tadawul Riyadh (XSAU), Dubai Financial Market / DFM (XDFM), NZX Auckland / New Zealand Exchange (XNZE), Nasdaq Helsinki (XHEL), Nasdaq Stockholm (XSTO). Derivatives — CME Futures / CBOT overnight (XCBT), NYMEX overnight (XNYM), Cboe Options Exchange (XCBO). Crypto 24/7 — Coinbase (XCOI), Binance (XBIN).. It is categorised as a Read tool in the Headless Oracle MCP Server, which means it retrieves data without modifying state.
Register the Headless Oracle MCP server in PolicyLayer and add a rule for get_market_status: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Headless Oracle. Nothing to install.
get_market_status is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the get_market_status rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for get_market_status. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
get_market_status is provided by the Headless Oracle MCP server (headless-oracle-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 4 Headless Oracle tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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