trust-score
Compute a trust score for a Nostr identity using the web-of-trust graph and kind 31000 attestations. Accepts any identifier: name, NIP-05, npub, or hex pubkey.
This record as markdown: /tools/dev-forgesworn-bray/trust-score.md
What trust-score does on Nostr Bray
AI agents call trust-score to retrieve information from Nostr Bray without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Why trust-score is rated Low
The tool performs a data retrieval and computation operation on immutable Nostr attestation records. It takes an identifier as input and returns a calculated score based on existing trust relationships and attestations. There is no capability to create, modify, delete, or execute external operations.
From the tool's definition Tool description explicitly states 'Compute a trust score' by querying 'web-of-trust graph and kind 31000 attestations'—a pure read operation that retrieves and aggregates existing data with no modifications, side effects, or state changes.
Attacks that exploit this kind of access
The rule that runs trust-score safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Nostr Bray, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For trust-score, this is the rule to start with:
trust-score is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Nostr Bray, apply this rule, and every trust-score call is checked against it from then on.
Questions about trust-score
Compute a trust score for a Nostr identity using the web-of-trust graph and kind 31000 attestations. Accepts any identifier: name, NIP-05, npub, or hex pubkey. It is categorised as a Read tool in the Nostr Bray MCP Server, which means it retrieves data without modifying state.
Register the Nostr Bray MCP server in PolicyLayer and add a rule for trust-score: 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 Nostr Bray. Nothing to install.
trust-score 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 trust-score 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 trust-score. 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.
trust-score is provided by the Nostr Bray MCP server (nostr-bray). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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