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Joining A Garden

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Overview​

Evaluators verify that impact claims are backed by real evidence. To begin evaluating, you need access to a garden's impact data — which is publicly queryable through the Green Goods indexer and EAS. Joining a garden as an evaluator gives you contextual understanding of the community's work, but most evaluation data is publicly accessible on-chain.

How It Works​

  1. 1

    Identify your scope

    Decide which gardens or impact areas you want to evaluate. You can evaluate any garden whose data is indexed — most data is public.

  2. 2

    Request evaluator role

    Contact the garden operator to request the evaluator role. This grants you visibility into garden-specific context like review policies and action definitions.

  3. 3

    Set up your tools

    Configure access to the Green Goods indexer (Envio GraphQL API) and the EAS GraphQL endpoints for the chains you will be evaluating.

  4. 4

    Begin evaluation

    Start querying garden data, reviewing attestation chains, and building your evaluation methodology.

How to get started as an evaluator

If: You want to evaluate a specific garden's impact claims

Do: Contact the garden operator to get context on their review standards, then query their data through the indexer.

Then: Start with a small sample of attestation chains to validate your methodology.

If: You want to evaluate impact across multiple gardens

Do: Use the indexer to query across all gardens on a given chain. No garden-specific role is required for public data.

Then: Build cross-garden comparison frameworks and document your evaluation criteria.

If: You are new to on-chain impact evaluation

Do: Start with the Evaluator Guide to understand the data landscape and available tools.

Then: Practice verification on a few attestation chains before scaling up.

Best Practices​

  • Most Green Goods impact data is publicly queryable — you do not need special permissions to start evaluating
  • Having the evaluator role in a garden gives you context (review policies, action definitions) that improves evaluation quality
  • Familiarize yourself with the EAS schema definitions for work submissions, approvals, and assessments before diving into data
  • Connect with garden operators to understand their specific standards and edge cases

What's Next​

Next best action

With access established, learn how to evaluate impact certificates.

Evaluating Certificates