List active Pendle markets on a given chain, or scan all Pendle-supported chains. Returns: market name, implied APY (fixed rate), LP APY, TVL, liquidity, maturity, and token addresses. Pendle is a competing/complementary yield tokenization protocol. Like Spectra, it splits yield-bearing tokens in...
Part of the Spectra server.
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AI agents call list_pendle_markets to retrieve information from Spectra 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 list_pendle_markets 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": {
"list_pendle_markets": {}
}
}See the full Spectra policy for all 25 tools.
These attack patterns abuse exactly the kind of access list_pendle_markets 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.
List active Pendle markets on a given chain, or scan all Pendle-supported chains. Returns: market name, implied APY (fixed rate), LP APY, TVL, liquidity, maturity, and token addresses. Pendle is a competing/complementary yield tokenization protocol. Like Spectra, it splits yield-bearing tokens into PT (principal) and YT (yield). Key differences: - Pendle uses its own AMM (not Curve) with time-decay pricing - Pendle has PENDLE token incentives on LP positions - Pendle markets exist on chains where Spectra may not be deployed yet This data is essential for curators building cross-protocol MetaVaults. A MetaVault can integrate Pendle PTs alongside Spectra PTs, allocating to whichever protocol offers better rates for a given underlying + maturity. Pendle-supported chains: Ethereum (mainnet), Optimism (optimism), BSC (bsc), Sonic (sonic), Base (base), Arbitrum (arbitrum), Mantle (mantle), Berachain (berachain), HyperEVM (hyperevm), Corn (corn) Chains with Spectra overlap: mainnet, optimism, bsc, sonic, base, arbitrum Pendle-only chains (Spectra not deployed): mantle, berachain, hyperevm, corn Use compare_pendle_spectra to do a head-to-head comparison on a specific underlying. Use scan_opportunities for Spectra-native opportunity ranking.. It is categorised as a Read tool in the Spectra MCP Server, which means it retrieves data without modifying state.
Register the Spectra MCP server in PolicyLayer and add a rule for list_pendle_markets: 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 Spectra. Nothing to install.
list_pendle_markets 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 list_pendle_markets 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 list_pendle_markets. 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.
list_pendle_markets is provided by the Spectra MCP server (spectra-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 25 Spectra tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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