Fetch a Federal Reserve Economic Data (FRED) series by ID — e.g. 'DGS10' (10Y yield), 'WALCL' (Fed balance sheet), 'T10Y2Y' (yield curve). Returns cleaned latest observations. Priced at $0.005 USDC on Base (x402). Pass a signed x402 v2 authorization as the '_payment' argument to unlock the paid r...
Part of the CIPHER x402 — Paid Solana & Crypto Tools server.
Free to start. No card required.
AI agents call fred_macro_series to retrieve information from CIPHER x402 — Paid Solana & Crypto Tools 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 fred_macro_series 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": {
"fred_macro_series": {}
}
}See the full CIPHER x402 — Paid Solana & Crypto Tools policy for all 15 tools.
These attack patterns abuse exactly the kind of access fred_macro_series 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.
Fetch a Federal Reserve Economic Data (FRED) series by ID — e.g. 'DGS10' (10Y yield), 'WALCL' (Fed balance sheet), 'T10Y2Y' (yield curve). Returns cleaned latest observations. Priced at $0.005 USDC on Base (x402). Pass a signed x402 v2 authorization as the '_payment' argument to unlock the paid response. Without it, the tool returns the 402 accept-list for your wallet to sign.. It is categorised as a Read tool in the CIPHER x402 — Paid Solana & Crypto Tools MCP Server, which means it retrieves data without modifying state.
Register the CIPHER x402 — Paid Solana & Crypto Tools MCP server in PolicyLayer and add a rule for fred_macro_series: 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 CIPHER x402 — Paid Solana & Crypto Tools. Nothing to install.
fred_macro_series 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 fred_macro_series 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 fred_macro_series. 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.
fred_macro_series is provided by the CIPHER x402 — Paid Solana & Crypto Tools MCP server (https://cipher-x402-mcp.vercel.app/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 15 CIPHER x402 — Paid Solana & Crypto Tools tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
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