CompassDAO: A Semantic Search Engine for ERC-8004 Agents

CompassDAO is a semantic search engine designed specifically for discovering and evaluating ERC-8004 agents. It uses vectorized embeddings to simplify the discovery of useful agents and integrates a trust and feedback verification system through an optimistic DAO staking and contesting mechanism. This ensures that search results are not only relevant but also reliable.

Architecture

Search embedding creation

Making new agents searcheable

• CloudFlare worker creates vectorised embeddings of the agent card using Venice AI [imlemented]
• Worker indexes vectorised embeddings of the agent card in a Pinecone vector database [implemented]
• Worker extracts agent card from the URL in the registration file at the TokenURI [in progress]
• The Graph subgraph listens for event Registered from the ERC-8004 contract deployed on Arbitrum (currently using test deployment on Arbitrum sepolia) [roadmap]
• Scheduled CloudFlare worker intermittently fetches newly registered agents from the subgraph GraphQL endpoint [roadmap]

Search service

A2A search API functionality

• CloudFlare worker serverless MCP enabled Agent-2-Agent search API using x402 to pay for searches [implemented]
• Worker uses Venice AI to vectorise the search query [implemented]
• Worker fetches available agents with lowest vector cosine distance from the Pinecone vector database [implemented]
• Worker computes a trust score for each agent using information from the ERC-8004 Reputation Registry [implemented]
• Search results are further sorted based CompassDAO verification [in progress]

Frontend & demo

Used for documentation and demo

• Website hosted on vercel [implemented]
• Demo "agents" (models with sysprompts) running on Cloudflare workers [implemented]
• Access to demonstrate manual semantic agent search [implemented]
• Chat bot to demonstrate A2A semantic agent search [implemented]

Verified agent feedback system [roadmap]

Optimistic contestable feedback system economically incentivising honest reviewing

• Optimistic verification system assumes reviews of DAO member agents are legitimate [implemented]
• DAO members can stake tokens against the legitimacy of a feedback (as either legitimate, or illegitimate) [in progress]
• After 24 hours, the final legitimacy of the feedback is determined by amounts in each stake pool [in progress]
• Winners are returned their stake along with half of the losers stake. The other half is returned to the treasury [implemented]
• DAO verified agents recieve a higher trust score in searches [roadmap]

graph TB
    %% Define styles
    classDef implemented fill:#e1f5fe,stroke:#01579b,stroke-width:2px
    classDef roadmap fill:#fff3e0,stroke:#e65100,stroke-width:2px,stroke-dasharray: 5 5
    classDef arbitrum fill:#bbdefb,stroke:#1976d2,stroke-width:3px
    classDef x402 fill:#c8e6c9,stroke:#388e3c,stroke-width:3px
    classDef a2a fill:#ffe0b2,stroke:#f57c00,stroke-width:3px

    %% Frontend Layer
    subgraph Frontend["Frontend & Demo"]
        Website["Website<br/>(Vercel)"]
        Chatbot["Chatbot<br/>(A2A Demo)"]
        DemoAgents["Demo Agents<br/>(Cloudflare Workers)"]
    end

    %% Search API Layer
    subgraph SearchAPI["Search API (A2A + x402)"]
        MCPWorker["Cloudflare Worker<br/>MCP Server"]
        Pinecone["Pinecone<br/>(Vector Database)"]
        TrustScore["Trust Score<br/>Computation"]
        VeniceAI["Venice AI<br/>(Query Vectorization)"]
    end

    %% Indexing Pipeline
    subgraph Indexing["Indexing Pipeline"]
        GraphSubgraph["The Graph<br/>Subgraph"]
        Scheduler["Scheduled<br/> Cloudflare Worker"]
        AgentExtractor["Agent Card<br/>Extractor"]
        EmbeddingService["Venice AI<br/>(Embeddings)"]
        VectorIndexer["Pinecone<br/>Indexer"]
    end

    %% Blockchain Layer
    subgraph Blockchain["Arbitrum Sepolia"]
        ERC8004Identity["ERC-8004<br/>Identity Registry"]
        ERC8004Reputation["ERC-8004<br/>Reputation Registry"]
        FeedbackMarket["FeedbackMarket<br/>(DAO Staking)"]
    end

    %% Data Flows
    Website --> MCPWorker
    Chatbot --> MCPWorker
    DemoAgents --> MCPWorker

    MCPWorker --> VeniceAI
    MCPWorker --> TrustScore
    MCPWorker --> ERC8004Reputation
    VeniceAI --> Pinecone

    GraphSubgraph --> Scheduler
    Scheduler --> AgentExtractor
    AgentExtractor --> EmbeddingService
    EmbeddingService --> VectorIndexer
    VectorIndexer --> Pinecone

    ERC8004Identity --> GraphSubgraph
    ERC8004Reputation --> TrustScore
    FeedbackMarket --> ERC8004Reputation


    %% Apply styles
    class Website,Chatbot,DemoAgents,MCPWorker,VeniceAI,Pinecone,TrustScore,AgentExtractor,EmbeddingService,VectorIndexer implemented
    class GraphSubgraph,Scheduler,FeedbackMarket roadmap
    class ERC8004Identity,ERC8004Reputation,FeedbackMarket arbitrum
    class MCPWorker x402
    class Chatbot,MCPWorker a2a

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