SO4 Local Full-Stack Integration Guide

This guide walks a new contributor through running the SO4 stack — contracts, indexer, and web app — locally, from a clean clone, using a single documented path. Follow it top to bottom: each step builds on the previous one, and the verification commands at the end exist to catch regressions before review.

Scope: local (a standalone/quickstart Stellar node + locally deployed contracts), testnet (public SDF testnet), and a forward note on mainnet. Local is the default development path.

Prerequisites
Repository layout
1. Build the contracts
2. Deploy and bootstrap contracts
3. Sync manifests into the indexer
4. Start the indexer services
5. Run the local smoke scenario
6. Start the web app
7. Verify GraphQL data
8. Verify the UI is reading indexed data
Expected URLs and ports
Local vs testnet vs mainnet
Troubleshooting
Automated checks
Definition of done

Prerequisites

Tool	Version / notes
Bun	`>= 1.3` — the workspace package manager and task runner. The root `package.json` pins `bun@1.3.13` via `packageManager`.
Docker Engine	With Docker Compose v2. The indexer stack (`postgres`, `subquery-node`, `graphql-engine`) runs in containers.
Stellar CLI	`stellar` must be on `PATH` for contract deploys and smoke runs.
Rust toolchain	Stable Rust with the `wasm32-unknown-unknown` target for Soroban contracts: `rustup target add wasm32-unknown-unknown`.
`make`	Used by the contracts repo deploy/bootstrap targets.
Node.js	`>= 20` (Bun bundles its own runtime, but some tooling still expects Node on `PATH`).

Stellar keys (local + testnet)

The local smoke flow uses local-only Stellar CLI keys; production keys are never touched. From the contracts repo (default sibling path /home/sunny/zero/so4-market-project/contracts):

stellar keys generate so4-local --network local --fund
stellar keys generate so4-testnet --network testnet --fund

These keys live under ~/.config/stellar/identity/ and are friendbot-funded automatically when generated against a known network.

Repository layout

so4-market-project/
├── interface/          # this repo (web app, indexer, docs)
│   ├── apps/
│   │   ├── s03-indexer/    # SubQuery indexer (Bun workspace)
│   │   └── web/            # React + Vite trading UI
│   └── docs/               # you are here
└── contracts/          # SO4 Soroban contracts (sibling repo)
    ├── .deployed/      # generated deployment env files
    └── .stellar/       # generated contract ID / wasm hash JSON

The indexer's sync:contracts:* script reads ../contracts by default. Override with SO4_CONTRACTS_REPO=/abs/path if your layout differs.

1. Build the contracts

From the contracts repo:

cd ../contracts
make build          # cargo build + soroban contract build for every workspace contract

Expected: target/wasm32-unknown-unknown/release/*.wasm exist for every handler/store/router contract.

2. Deploy and bootstrap contracts

# Local standalone network (default for development)
make deploy NETWORK=local
make bootstrap NETWORK=local

# Or against public testnet
make deploy NETWORK=testnet
make bootstrap NETWORK=testnet

The deploy step writes:

.deployed/<network>.env — every protocol contract ID + role config
.deployed/tokens-<network>.env — TUSDC, TWBTC, TETH, TXLM, faucet
.deployed/frontend-<network>.env and .deployed/frontend-<network>.ts — frontend-friendly exports
.stellar/contract-ids/<network>.json — combined contract ID + network passphrase

Bootstrap creates markets and writes MARKET_TOKEN_* values back into the env file. If you skip bootstrap, the indexer sync will warn (not fail) about missing market tokens.

3. Sync manifests into the indexer

cd ../interface
bun run --cwd apps/s03-indexer sync:contracts:local      # for local
bun run --cwd apps/s03-indexer sync:contracts:testnet    # for testnet

This writes apps/s03-indexer/config/contracts.<network>.json containing network metadata, Horizon/Soroban RPC endpoints, core contracts, test tokens, and market triplets. project.ts picks the right manifest by reading INDEXER_NETWORK (or the explicit INDEXER_CONTRACTS_CONFIG override) from apps/s03-indexer/.env.

4. Start the indexer services

# One-shot clean checkout path: codegen + build + docker compose up
bun run indexer:dev

Or, step by step:

bun run indexer:codegen     # subql codegen — regenerates src/types/
bun run indexer:build       # subql build — produces dist/ mappings
bun run indexer:start       # docker compose pull && up --remove-orphans

Services come up on:

Service	URL
GraphQL playground / query API	http://localhost:3000
Postgres (indexed entities + metadata)	`postgres://postgres:postgres@localhost:5432/postgres`
Stellar Horizon (local quickstart)	http://localhost:8000
Soroban RPC (local quickstart)	http://localhost:8000/soroban/rpc

5. Run the local smoke scenario

smoke:local is the single end-to-end check that ties everything together.

bun run --cwd apps/s03-indexer build
bun run --cwd apps/s03-indexer smoke:local

It runs preflight → service checks → deploy (if needed) → manifest sync → indexer rebuild → contract actions → GraphQL assertions, and writes .smoke/report.json. Re-run against a clean DB with bun run --cwd apps/s03-indexer smoke:clean.

See apps/s03-indexer/README.md for the full flag reference (--mode, --source, --keeper, --report, --skip-* flags, and the SMOKE_* env-var equivalents).

6. Start the web app

bun run --cwd apps/web dev

The web app comes up at http://localhost:3000 in dev mode. (The indexer GraphQL service also defaults to port 3000 — when you need both at once, run the web app with bun run --cwd apps/web dev --port 3001 or stop the indexer's graphql-engine container.)

For production builds:

bun run --cwd apps/web build

7. Verify GraphQL data

Open the GraphQL playground at http://localhost:3000 and run:

{
  query {
    markets(first: 5) {
      totalCount
      nodes { id marketToken indexToken longToken shortToken }
    }
    deposits(first: 5, orderBy: LEDGER_DESC) {
      nodes { id account market amount ledger }
    }
    positions(first: 5) {
      nodes { id account market sizeUsd entryPrice }
    }
  }
}

Expected after a successful smoke run:

markets.totalCount >= 1 (at least the bootstrapped market)
deposits shows the smoke-run deposit
positions shows the long opened by the MarketIncrease step

If counts are zero, jump to Troubleshooting → indexer behind latest ledger.

8. Verify the UI is reading indexed data

With the web app running:

Open http://localhost:3000 (or :3001 if you remapped).
Connect a wallet funded against the same network you deployed to.
The Earn page should list the bootstrapped market with non-zero pool metadata sourced from pools / markets GraphQL queries.
The Trade page chart should resolve the market by marketToken and surface any open positions / orders for the connected account.

If the UI shows empty state while GraphQL has data, check the browser network tab — the most common cause is the web app pointing at the wrong GraphQL endpoint (see apps/web/src/lib/* and any VITE_GRAPHQL_* env vars).

Expected URLs and ports

What	Where
Web app (Vite dev)	http://localhost:3000 (default) or `:3001` when remapped
SubQuery GraphQL playground	http://localhost:3000
Postgres	`localhost:5432` (user/db: `postgres`)
Stellar Horizon (local)	http://localhost:8000
Soroban RPC (local)	http://localhost:8000/soroban/rpc
Stellar Horizon (testnet)	https://horizon-testnet.stellar.org
Soroban RPC (testnet)	https://soroban-testnet.stellar.org
Docker services	`docker compose -f apps/s03-indexer/docker-compose.yml ps`

Local vs testnet vs mainnet

Environment	When to use	Endpoint defaults	Indexer config
local	Fast iteration, fixture data, deterministic test runs	`host.docker.internal:8000` Horizon + Soroban RPC	`config/contracts.local.json`, `INDEXER_NETWORK=local`
testnet	Shared remote network, multi-contributor reproduction	`horizon-testnet.stellar.org` + `soroban-testnet.stellar.org`	`config/contracts.testnet.json`, `INDEXER_NETWORK=testnet`
mainnet	Not yet supported. Future: separate manifest + RPC endpoints + signed deploys; never reuse local/testnet keys.

Keep local and testnet manifests in version control side-by-side — sync:contracts:* writes to network-specific files and never overwrites the other.

Troubleshooting

Missing `.deployed/<network>.env`

Symptom: sync:contracts:* fails with deployment file not found or smoke:local exits at the contracts-deploy step.

Fix: You have not deployed contracts for that network yet. Run make deploy NETWORK=<network> in the contracts repo. If you deployed but the file is in an unexpected location, set SO4_CONTRACTS_REPO=/abs/path so the sync script can find it.

Wrong network passphrase

Symptom: Soroban RPC rejects transaction: NetworkMismatch, or the indexer silently produces zero events even though Horizon shows transactions.

Fix: The passphrase in .env / generated config must match the network you deployed against. Local standalone uses Standalone Network ; February 2017; testnet uses Test SDF Network ; September 2015. Re-run bun run --cwd apps/s03-indexer sync:contracts:<network> to regenerate from the source of truth and double-check INDEXER_NETWORK in apps/s03-indexer/.env.

Stale market token IDs

Symptom: Web app shows the right markets but UI rows look empty, or smoke asserts the wrong number of position entities.

Fix: Market tokens are created during make bootstrap. If you re-bootstrap without re-syncing, the indexer keeps watching the previous tokens. Always run sync:contracts:<network> after make bootstrap, then rebuild the indexer (bun run indexer:build) and restart it.

SubQuery database not ready

Symptom: subquery-node logs connection refused or relation does not exist errors on startup.

Fix: Postgres needs a few seconds to initialize on first boot. Stop the stack, then start it again:

docker compose -f apps/s03-indexer/docker-compose.yml down
docker compose -f apps/s03-indexer/docker-compose.yml up

If the error persists, wipe state with bun run --cwd apps/s03-indexer smoke:clean (drops the DB volume) and re-start.

Indexer is behind latest ledger

Symptom: GraphQL returns zero rows for an event you just submitted, or the smoke run times out in the graphql-query step.

Fix: The indexer cursors lag the chain by a few ledgers under normal load. Check subquery-node logs for the current cursor vs Horizon's latest ledger:

docker compose -f apps/s03-indexer/docker-compose.yml logs -f subquery-node

If the lag is growing instead of catching up, you likely have the wrong endpoint, wrong passphrase, or a malformed manifest. Re-run sync and rebuild.

Missing local token balances or approvals

Symptom: Smoke step contract-action fails on the deposit/order with InsufficientBalance or AllowanceMissing.

Fix: The faucet has not been claimed for the smoke-run key, or token allowances against exchange_router / deposit_handler were not set. The default smoke flow claims the faucet and approves tokens automatically; if you ran it with --skip-* flags, do the missed steps manually using the contracts repo make faucet / make approve targets. As a last resort, regenerate keys and re-run with --mode fresh.

Web app shows "no data" with healthy GraphQL

Symptom: GraphQL playground returns rows; the UI still renders empty states.

Fix: The web app is pointing at the wrong endpoint or has cached an old schema. Check apps/web/.env and any VITE_GRAPHQL_* variables; then hard reload the browser (the TanStack Query cache and service worker can hold stale nulls).

Automated checks

Run these from the repo root before opening a PR. They mirror the CI workflow under .github/workflows/ and catch the most common schema / mapping / config regressions:

bun install                                         # workspace install
bun run --cwd apps/s03-indexer codegen              # schema -> types
bun run --cwd apps/s03-indexer build                # mappings build
bun run --cwd apps/s03-indexer test                 # mapping unit tests
bun run --cwd apps/web typecheck                    # web app type safety
bun run --cwd apps/web build                        # web app production build

Manifest sync also has a fixture-based check that does not require a live Stellar deploy. See scripts/check-integration.sh for the bundled local check script and apps/s03-indexer/tests/fixtures/ for offline deployment fixtures.

Definition of done

A local integration is "done" when every box below is true:

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SO4 Local Full-Stack Integration Guide

Table of contents

Prerequisites

Stellar keys (local + testnet)

Repository layout

1. Build the contracts

2. Deploy and bootstrap contracts

3. Sync manifests into the indexer

4. Start the indexer services

5. Run the local smoke scenario

6. Start the web app

7. Verify GraphQL data

8. Verify the UI is reading indexed data

Expected URLs and ports

Local vs testnet vs mainnet

Troubleshooting

Missing `.deployed/<network>.env`

Wrong network passphrase

Stale market token IDs

SubQuery database not ready

Indexer is behind latest ledger

Missing local token balances or approvals

Web app shows "no data" with healthy GraphQL

Automated checks

Definition of done

Uh oh!

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local-full-stack.md

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SO4 Local Full-Stack Integration Guide

Table of contents

Prerequisites

Stellar keys (local + testnet)

Repository layout

1. Build the contracts

2. Deploy and bootstrap contracts

3. Sync manifests into the indexer

4. Start the indexer services

5. Run the local smoke scenario

6. Start the web app

7. Verify GraphQL data

8. Verify the UI is reading indexed data

Expected URLs and ports

Local vs testnet vs mainnet

Troubleshooting

Missing .deployed/<network>.env

Wrong network passphrase

Stale market token IDs

SubQuery database not ready

Indexer is behind latest ledger

Missing local token balances or approvals

Web app shows "no data" with healthy GraphQL

Automated checks

Definition of done

Missing `.deployed/<network>.env`