Doppler API

TypeScript REST API for creating Doppler launches.

Disclaimer

This project is in active development & not ready for production use.

Endpoints

• POST /v1/launches
• POST /v1/launches/multicurve (alias)
• POST /v1/launches/static (alias)
• POST /v1/launches/dynamic (alias)
• GET /v1/launches/:launchId
• GET /v1/capabilities
• GET /health
• GET /ready

Quick start

npm install
cp .env.example .env
npm run dev

Current target feature set

• Auction types:
  • multicurve (recommended default on V4-capable networks)
  • dynamic (for higher-value assets that need maximally capital-efficient price discovery; supports migration.type="uniswapV2" or migration.type="uniswapV4" in this API profile)
  • static (Uniswap V3 static launch with lockable beneficiaries; compatibility fallback for networks without Uniswap V4 support)
• Multicurve initializer modes:
  • standard (implemented via scheduled initializer with startTime=0)
  • scheduled (startTime required)
  • decay (startFee, durationSeconds, optional startTime)
  • rehype (hook-based initializer config)
• Migration modes:
  • noOp for multicurve/static
  • uniswapV2 and uniswapV4 for dynamic
  • uniswapV3 is not supported and returns 501 MIGRATION_NOT_IMPLEMENTED
• Governance: enabled=false is the active profile, eg. noOp
• Token allocation profile:
  • Default: 100% of totalSupply is allocated to the multicurve market.
  • Optional: set economics.tokensForSale to allocate less to the market.
  • Remainder (totalSupply - tokensForSale) is allocated to non-market allocation recipients.
  • Optional: set economics.allocations.recipients (max 10 unique recipients) to split the non-market remainder.
• Multicurve design reference: Doppler Multicurve whitepaper.
• Guidance: prefer multicurve whenever the target chain has Uniswap V4 support. Use static only when V4 is unavailable.

Scope and roadmap

• This API profile is at feature parity with the other Doppler launch APIs for the supported launch flows.

Launch ID format

<chainId>:<txHash>

Example: 84532:0xaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa

Create launch example

Request

POST /v1/launches
x-api-key: <API_KEY>
content-type: application/json

{
  "chainId": 84532,
  "userAddress": "0x1111111111111111111111111111111111111111",
  "integrationAddress": "0x1111111111111111111111111111111111111111",
  "tokenMetadata": {
    "name": "My Token",
    "symbol": "MTK",
    "tokenURI": "ipfs://my-token-metadata"
  },
  "economics": {
    "totalSupply": "1000000000000000000000000",
    "tokensForSale": "800000000000000000000000",
    "allocations": {
      "recipients": [
        {
          "address": "0x1111111111111111111111111111111111111111",
          "amount": "100000000000000000000000"
        },
        {
          "address": "0x2222222222222222222222222222222222222222",
          "amount": "100000000000000000000000"
        }
      ],
      "mode": "vest",
      "durationSeconds": 7776000
    }
  },
  "pricing": {
    "numerairePriceUsd": 3000
  },
  "governance": {
    "enabled": false,
    "mode": "noOp"
  },
  "migration": {
    "type": "noOp"
  },
  "auction": {
    "type": "multicurve",
    "curveConfig": {
      "type": "preset",
      "presets": ["low", "medium", "high"]
    },
    "initializer": {
      "type": "standard"
    }
  }
}

Curve configuration examples

Multicurve explicit ranges (non-preset)

Use this when you want deterministic, non-default market-cap bands instead of presets.

{
  "auction": {
    "type": "multicurve",
    "curveConfig": {
      "type": "ranges",
      "fee": 15000,
      "tickSpacing": 300,
      "curves": [
        {
          "marketCapStartUsd": 100,
          "marketCapEndUsd": 10000,
          "numPositions": 11,
          "sharesWad": "200000000000000000"
        },
        {
          "marketCapStartUsd": 10000,
          "marketCapEndUsd": 100000,
          "numPositions": 11,
          "sharesWad": "300000000000000000"
        },
        {
          "marketCapStartUsd": 100000,
          "marketCapEndUsd": "max",
          "numPositions": 11,
          "sharesWad": "500000000000000000"
        }
      ]
    }
  }
}

Static explicit range (starts at $100)

Use this only for the static fallback path.

{
  "auction": {
    "type": "static",
    "curveConfig": {
      "type": "range",
      "marketCapStartUsd": 100,
      "marketCapEndUsd": 100000
    }
  }
}

Dynamic explicit range (starts at $100, uniswapV2 migration)

Use this for the V4 dynamic flow. Dynamic exits/migrates when maxProceeds is reached, or at auction end when minProceeds is satisfied. Dynamic is intended for assets with well-known value that benefit from maximally capital-efficient price discovery.

{
  "migration": {
    "type": "uniswapV2"
  },
  "auction": {
    "type": "dynamic",
    "curveConfig": {
      "type": "range",
      "marketCapStartUsd": 100,
      "marketCapMinUsd": 50,
      "minProceeds": "0.01",
      "maxProceeds": "0.1",
      "durationSeconds": 86400
    }
  }
}

Success response (200)

{
  "launchId": "84532:0xaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
  "chainId": 84532,
  "txHash": "0xaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
  "statusUrl": "/v1/launches/84532:0xaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
  "predicted": {
    "tokenAddress": "0xbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb",
    "poolId": "0xcccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc",
    "gasEstimate": "12500000"
  },
  "effectiveConfig": {
    "tokensForSale": "800000000000000000000000",
    "allocationAmount": "200000000000000000000000",
    "allocationRecipient": "0x1111111111111111111111111111111111111111",
    "allocationRecipients": [
      {
        "address": "0x1111111111111111111111111111111111111111",
        "amount": "100000000000000000000000"
      },
      {
        "address": "0x2222222222222222222222222222222222222222",
        "amount": "100000000000000000000000"
      }
    ],
    "allocationLockMode": "vest",
    "allocationLockDurationSeconds": 7776000,
    "numeraireAddress": "0x4200000000000000000000000000000000000006",
    "numerairePriceUsd": 3000,
    "feeBeneficiariesSource": "default"
  }
}

Status examples

Pending (200)

{
  "launchId": "84532:0xaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
  "chainId": 84532,
  "txHash": "0xaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
  "status": "pending",
  "confirmations": 0
}

Confirmed (200)

{
  "launchId": "84532:0xaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
  "chainId": 84532,
  "txHash": "0xaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
  "status": "confirmed",
  "confirmations": 2,
  "result": {
    "tokenAddress": "0xbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb",
    "poolOrHookAddress": "0xdddddddddddddddddddddddddddddddddddddddd",
    "poolId": "0xcccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc",
    "blockNumber": "12345678"
  }
}

Reverted (200)

{
  "launchId": "84532:0xaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
  "chainId": 84532,
  "txHash": "0xaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
  "status": "reverted",
  "confirmations": 1,
  "error": {
    "code": "TX_REVERTED",
    "message": "Transaction reverted on-chain"
  }
}

Capabilities example

GET /v1/capabilities (200)

{
  "defaultChainId": 84532,
  "pricing": {
    "enabled": true,
    "provider": "coingecko"
  },
  "chains": [
    {
      "chainId": 84532,
      "auctionTypes": ["multicurve", "dynamic"],
      "multicurveInitializers": ["standard", "scheduled", "decay", "rehype"],
      "migrationModes": ["noOp", "uniswapV2"],
      "governanceModes": ["noOp", "default"],
      "governanceEnabled": true
    }
  ]
}

Health and readiness

• GET /health: process liveness
• GET /ready: dependency readiness (chain RPC checks)

Example GET /health:

{ "status": "ok" }

Validation and defaults

• economics.tokensForSale is optional:
  • if omitted, tokensForSale = totalSupply (100% sold to market).
  • if provided, it must be > 0 and <= totalSupply.
  • if tokensForSale < totalSupply, it must be at least 20% of totalSupply.
• Non-market allocation is automatic:
  • allocationAmount = totalSupply - tokensForSale.
  • default recipient is userAddress.
  • default lock mode is vest for 90 days when non-market allocation exists.
  • lock modes: vest, unlock, vault.
• Optional explicit split across recipients:
  • economics.allocations.recipients supports up to 10 unique allocation recipients.
  • no duplicate addresses are allowed.
  • allocation amounts must sum exactly to totalSupply - tokensForSale.
  • if allocations are provided and tokensForSale is omitted, API derives tokensForSale.
• Multicurve initializer:
  • default is standard (implemented as scheduled with startTime=0).
  • scheduled requires auction.initializer.startTime.
  • decay requires startFee and durationSeconds (optional startTime).
  • rehype requires hook config and percent wad fields that sum to 1e18.
• Multicurve curve selection:
  • presets are convenient defaults.
  • explicit ranges are recommended when you need intentional market-cap bands instead of default tiers.
  • custom multicurve swap fees are supported via curveConfig.fee (custom values supported; tick spacing can be derived or provided).
• Static launch curve config:
  • auction.type="static" requires auction.curveConfig.
  • curveConfig.type="preset" supports preset: "low" | "medium" | "high".
  • curveConfig.type="range" supports explicit marketCapStartUsd and marketCapEndUsd.
  • custom static fee input is supported via curveConfig.fee, but Uniswap V3 still enforces valid V3 fee tiers onchain.
  • static launches always use lockable beneficiaries (request values or default 95% user / 5% protocol owner).
  • use static only as a fallback when the target chain does not support Uniswap V4/multicurve.
• Dynamic launch curve config:
  • auction.type="dynamic" requires auction.curveConfig.
  • curveConfig.type="range" requires:
    • marketCapStartUsd
    • marketCapMinUsd
    • minProceeds (decimal string in numeraire units)
    • maxProceeds (decimal string in numeraire units)
  • optional: durationSeconds, epochLengthSeconds, fee, tickSpacing, gamma, numPdSlugs
  • custom dynamic fees are supported via curveConfig.fee.
  • dynamic launches require migration.type="uniswapV2" or migration.type="uniswapV4" in this API profile.
  • for migration.type="uniswapV4", request migration.fee and migration.tickSpacing.
  • for migration.type="uniswapV4", streamable fee beneficiaries are derived from feeBeneficiaries (or the default 95/5 split).
  • migration.type="uniswapV3" is reserved and currently returns 501 MIGRATION_NOT_IMPLEMENTED.
• Percentage-based allocation is supported by converting percent to amount:
  • tokensForSale = totalSupply * salePercent / 100
  • Example: 20% sale means 80% non-market allocation.
• integrationAddress is optional.
• governance is binary at create time:
  • omitted/false => no governance
  • true or { "enabled": true } => default token-holder governance (OpenZeppelin Governor via protocol governance factory)
• pricing.numerairePriceUsd overrides provider pricing.
• If auto-pricing is unavailable, caller must pass pricing.numerairePriceUsd.
• If feeBeneficiaries is omitted, API applies default split:
  • userAddress: 95%
  • protocol owner: 5%
• feeBeneficiaries request constraints:
  • supports up to 10 unique beneficiary addresses.
  • shares use WAD precision and must sum to 1e18 (100%) when protocol owner is included.
  • if protocol owner is omitted, provided shares must sum to 95% (0.95e18) and API appends protocol owner at 5%.
  • if protocol owner is provided, it must have at least 5% (WAD / 20).

See docs/mvp-launch.md for a concise MVP launch example and a full defaults-resolution table.

Tests

npm test
npm run test:static
npm run test:dynamic
npm run test:live
npm run test:live:static
npm run test:live:dynamic
npm run test:live:v2migration
npm run test:live:v4migration
npm run test:live:multicurve
npm run test:live:multicurve:defaults
npm run test:live:fees
npm run test:live:governance
npm run test:live --verbose

test:live performs real on-chain creation and verification when LIVE_TEST_ENABLE=true and funded credentials are configured. By default, live output is concise (launch summary table). Use --verbose for full per-launch parameter and verification tables. Live launch tests run sequentially to avoid nonce conflicts from a single funded signer.