Find the best fixed-rate yield opportunities across all Spectra chains. Scans all supported networks and returns the top opportunities ranked by implied APY. Filters by asset type if specified. Important: This ranks by raw implied APY without considering your capital size or pool liquidity. Thes...
Part of the Spectra MCP server. Enforce policies on this tool with Intercept, the open-source MCP proxy.
AI agents call get_best_fixed_yields 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 get_best_fixed_yields 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.
tools:
get_best_fixed_yields:
rules:
- action: allowSee the full Spectra policy for all 25 tools.
Agents calling read-class tools like get_best_fixed_yields have been implicated in these attack patterns. Read the full case and prevention policy for each:
Other tools in the Read risk category across the catalogue. The same policy patterns (rate-limit, allow) apply to each.
Find the best fixed-rate yield opportunities across all Spectra chains. Scans all supported networks and returns the top opportunities ranked by implied APY. Filters by asset type if specified. Important: This ranks by raw implied APY without considering your capital size or pool liquidity. These rankings will often disagree with scan_opportunities (which ranks by effective APY after entry cost). That disagreement is intentional -- raw APY reflects the pool's headline rate while effective APY reflects what you actually capture at your capital size. Neither ranking is "correct" -- they measure different things. Use both to develop conviction about which pools genuinely serve your strategy.. It is categorised as a Read tool in the Spectra MCP Server, which means it retrieves data without modifying state.
Add a rule in your Intercept YAML policy under the tools section for get_best_fixed_yields. You can allow, deny, rate-limit, or validate arguments. Then run Intercept as a proxy in front of the Spectra MCP server.
get_best_fixed_yields 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_best_fixed_yields rule in your Intercept 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 Intercept policy for get_best_fixed_yields. 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_best_fixed_yields is provided by the Spectra MCP server (spectra-mcp-server). Intercept sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Open source. One binary. Zero dependencies.
npx -y @policylayer/intercept