Schema & Query Design
Define entities and relationships around the product's filters, history views and reporting requirements.
EGDI Infra & Subgraph Development
From Chain Events. To Useful Application Data.
Blockchain indexing and subgraph development for event mapping, GraphQL queries, deployment validation and observable data freshness.
- Event-to-entity mapping
- GraphQL query design
- Indexing freshness checks
- Versioned deployments
What we build
Discuss Your ProjectEGDI Infra & Subgraph Development Services
Subgraph Implementation
Configure contract sources and mappings for the selected network, with tests for representative events.
Data Validation
Compare indexed results with known transactions, check missing events and document block-height assumptions.
Deployment & Monitoring
Prepare the indexing environment and track progress, errors and schema-version changes before switching consumers.
Selected for your scope
Technology & Delivery Toolkit
We choose the implementation tools after confirming the architecture and integrations.
- Subgraph manifests
- GraphQL schemas
- Event mapping tests
- Indexing observability
Build the data model your product actually queries
Raw contract events rarely match the screens a product needs. We turn selected events into a defined entity model, implement the mappings and test the resulting queries against expected application states. The scope covers indexing visibility and version changes as well as the first successful query.
What is the source of truth?
Identify the contracts, events and starting blocks that define the dataset; document what the index does not include.
How fresh must the result be?
Set expectations for indexing lag and show useful pending states instead of treating cached data as immediate chain finality.
Practical Use Cases
01
Transaction history screens
Build searchable records with stable identifiers and links back to their originating chain events.
02
Protocol dashboards
Serve defined aggregates and activity views without rebuilding raw-event scans in every frontend.
03
Application data migrations
Compare an old and a new indexing deployment before changing the production query endpoint.
From scope to launch
Start Your ProjectOur Development Process
- 01
Discovery
List application queries and identify their contract-event sources.
- 02
Architecture
Design entity relationships, mapping rules and version boundaries.
- 03
Implementation
Implement mappings and integrate GraphQL queries with the product.
- 04
Verification
Compare event fixtures, indexing progress and query results.
- 05
Launch & Support
Roll out the endpoint with freshness monitoring and rollback instructions.
EGDI Infra & Subgraph Development FAQs
Is a subgraph the blockchain itself?
No. It is an indexed representation of selected blockchain data. Applications should account for indexing delay and validate important transaction state against the appropriate source.
Can every network use the same deployment?
Network support, data sources and hosting requirements must be checked for the chosen tooling. We scope supported sources rather than promising a universal index.
Turn contract activity into clear product data
Tell us what you want to build. We’ll help define the next practical step.