# Azimuth Watcher API

The Azimuth Watcher monitors Urbit's Azimuth identity registry on Ethereum, providing access to point ownership, sponsorship relationships, and identity state changes.

**GraphQL Endpoint**: `https://azimuth-watcher.zenith-test.tlon.systems/graphql`

## Querying Urbit Point Information

The azimuth-watcher is the primary service for querying Urbit identity data. Here are the most common operations:

### 1. Get Point Owner and Basic Info

Check who owns a specific Urbit point:

```bash
# Example:
curl 'https://azimuth.dev.vdb.to/graphql' \
  -H 'Content-Type: application/json' \
  --data-raw '{"query":"{ azimuthGetOwner(blockHash: \"latest\", contractAddress: \"0x223c067F8CF28ae173EE5CafEa60cA44C335fecB\", _point: 1234) { value } }"}' \
  | jq
```

**Response:**

```json
{
  "data": {
    "azimuthGetOwner": {
      "value": "0x4b22764F2Db640aB4d0Ecfd0F84344F3CB5C3715"
    }
  }
}
```

### 2. Get Cryptographic Keys for a Point

Get encryption and authentication keys for networking:

```bash
# Example:
curl 'https://azimuth.dev.vdb.to/graphql' \
  -H 'Content-Type: application/json' \
  --data-raw '{"query":"{ azimuthGetKeys(blockHash: \"latest\", contractAddress: \"0x223c067F8CF28ae173EE5CafEa60cA44C335fecB\", _point: 58213) { value { encryptionKey: value0 authenticationKey: value1 cryptoSuiteVersion: value2 keyRevisionNumber: value3 } } }"}' \
  | jq
```

**Response:**

```json
{
  "data": {
    "azimuthGetKeys": {
      "value": {
        "encryptionKey": "0xc248f759474b16192bd8bdca0bff1b8bff555cd3d118022095331d6d98690c6d",
        "authenticationKey": "0x21188bac08542730e1c4697636d6fa25968f404470ccf917756f05e28c69045a",
        "cryptoSuiteVersion": "1",
        "keyRevisionNumber": "1"
      }
    }
  }
}
```

### 3. Check Point Status

Check if a point is active (booted) and has a sponsor:

```bash
# Example:
curl 'https://azimuth.dev.vdb.to/graphql' \
  -H 'Content-Type: application/json' \
  --data-raw '{"query":"{ azimuthIsActive(blockHash: \"latest\", contractAddress: \"0x223c067F8CF28ae173EE5CafEa60cA44C335fecB\", _point: 1234) { value } azimuthHasSponsor(blockHash: \"latest\", contractAddress: \"0x223c067F8CF28ae173EE5CafEa60cA44C335fecB\", _point: 1234) { value } azimuthGetSponsor(blockHash: \"latest\", contractAddress: \"0x223c067F8CF28ae173EE5CafEa60cA44C335fecB\", _point: 1234) { value } }"}' \
  | jq
```

**Response:**

```json
{
  "data": {
    "azimuthIsActive": {
      "value": true
    },
    "azimuthHasSponsor": {
      "value": true
    },
    "azimuthGetSponsor": {
      "value": "210"
    }
  }
}
```

### 4. Get All Points Owned by an Address

Find all Urbit points owned by an Ethereum address:

```bash
# Example:
curl 'https://azimuth.dev.vdb.to/graphql' \
  -H 'Content-Type: application/json' \
  --data-raw '{"query":"{ azimuthGetOwnedPoints(blockHash: \"latest\", contractAddress: \"0x223c067F8CF28ae173EE5CafEa60cA44C335fecB\", _whose: \"0x1234567890123456789012345678901234567890\") { value } }"}' \
  | jq
```

**Response:**

```json
{
  "data": {
    "azimuthGetOwnedPoints": {
      "value": [
        "57965",
        "1234"
      ]
    }
  }
}
```

### 5. Multi-Watcher Queries

The gateway server allows querying multiple watchers in a single request:

```graphql
{
  # Check point status (azimuth-watcher)
  azimuthIsActive(
    blockHash: "0x2461e78f075e618173c524b5ab4309111001517bb50cfd1b3505aed5433cf5f9"
    contractAddress: "0x223c067F8CF28ae173EE5CafEa60cA44C335fecB"
    _point: 1
  ) {
    value
  }

  # Check censure count (censures-watcher)
  censuresGetCensuredByCount(
    blockHash: "0x2461e78f075e618173c524b5ab4309111001517bb50cfd1b3505aed5433cf5f9"
    contractAddress: "0x325f68d32BdEe6Ed86E7235ff2480e2A433D6189"
    _who: 6054
  ) {
    value
  }

  # Find a claim (claims-watcher)
  claimsFindClaim(
    blockHash: "0x2461e78f075e618173c524b5ab4309111001517bb50cfd1b3505aed5433cf5f9"
    contractAddress: "0xe7e7f69b34D7d9Bd8d61Fb22C33b22708947971A"
    _whose: 1967913144
    _protocol: "text"
    _claim: "Shrek is NOT Drek!"
  ) {
    value
  }

  # Check star release balance (linear-star-release-watcher)
  linearStarReleaseVerifyBalance(
    blockHash: "0x2461e78f075e618173c524b5ab4309111001517bb50cfd1b3505aed5433cf5f9"
    contractAddress: "0x86cd9cd0992F04231751E3761De45cEceA5d1801"
    _participant: "0xbD396c580d868FBbE4a115DD667E756079880801"
  ) {
    value
  }

  # Check conditional star release (conditional-star-release-watcher)
  conditionalStarReleaseWithdrawLimit(
    blockHash: "0x2461e78f075e618173c524b5ab4309111001517bb50cfd1b3505aed5433cf5f9"
    contractAddress: "0x8C241098C3D3498Fe1261421633FD57986D74AeA"
    _participant: "0x7F0584938E649061e80e45cF88E6d8dDDb22f2aB"
    _batch: 2
  ) {
    value
  }

  # Check governance proposals (polls-watcher)
  pollsGetUpgradeProposalCount(
    blockHash: "0xeaf611fabbe604932d36b97c89955c091e9582e292b741ebf144962b9ff5c271"
    contractAddress: "0x7fEcaB617c868Bb5996d99D95200D2Fa708218e4"
  ) {
    value
  }

  # Check NFT balance (ecliptic-watcher)
  eclipticBalanceOf(
    blockHash: "0x5e82abbe6474caf7b5325022db1d1287ce352488b303685493289770484f54f4"
    contractAddress: "0x33EeCbf908478C10614626A9D304bfe18B78DD73"
    _owner: "0x4b5E239C1bbb98d44ea23BC9f8eC7584F54096E8"
  ) {
    value
  }

  # Check delegation permissions (delegated-sending-watcher)
  delegatedSendingCanSend(
    blockHash: "0x2461e78f075e618173c524b5ab4309111001517bb50cfd1b3505aed5433cf5f9"
    contractAddress: "0xf6b461fE1aD4bd2ce25B23Fe0aff2ac19B3dFA76"
    _as: 1
    _point: 1
  ) {
    value
  }
}
```

## Understanding Query Parameters

All queries require these standard parameters:

- **blockHash**: Use `"latest"` for current state, or a specific block hash for historical queries
- **contractAddress**: Azimuth contract address (`0x223c067F8CF28ae173EE5CafEa60cA44C335fecB`)
- **_point**: The Urbit point number you're querying
- **_whose**: Ethereum address when querying by owner

## How It Works

### Data Source

The watchers continuously monitor Ethereum smart contracts by connecting to Ethereum RPC endpoint(s), indexing blockchain events and state changes.

### Data Flow

1. **Indexing**: Job runners fetch Ethereum events and blocks from RPC endpoint(s)
2. **Processing**: Events are processed and state changes stored in PostgreSQL databases
3. **Querying**: GraphQL servers provide fast, indexed access to current and historical blockchain state
4. **Gateway**: Unified endpoint routes queries to appropriate specialized watchers

### Storage

Each watcher maintains its own PostgreSQL database for efficient querying and data isolation.

## Additional Query Examples

### Query Point Information

```graphql
query GetPoint($point: String!) {
  point(id: $point) {
    id
    owner
    sponsor
    keyRevisionNumber
    managementProxy
    spawnProxy
    votingProxy
    transferProxy
    active
    escapeRequested
    escapeRequestedTo
  }
}
```

## Query Point History

```graphql
query GetPointHistory($point: String!) {
  point(id: $point) {
    id
    transfers {
      timestamp
      from
      to
      blockNumber
    }
    spawns {
      timestamp
      child
      blockNumber
    }
  }
}
```

## Query Multiple Points

```graphql
query GetPoints($owner: String!) {
  points(where: { owner: $owner }) {
    id
    owner
    sponsor
    active
  }
}
```

## Using the GraphQL API

### With curl

```bash
# Query Azimuth Watcher
curl -X POST https://azimuth-watcher.zenith-test.tlon.systems/graphql \
  -H "Content-Type: application/json" \
  -d '{
    "query": "query { point(id: \"~sampel-palnet\") { owner sponsor } }"
  }'
```

### With JavaScript/TypeScript

```javascript
const query = `
  query GetPoint($point: String!) {
    point(id: $point) {
      owner
      sponsor
      active
    }
  }
`;

const variables = { point: "~sampel-palnet" };

const response = await fetch('https://azimuth-watcher.zenith-test.tlon.systems/graphql', {
  method: 'POST',
  headers: { 'Content-Type': 'application/json' },
  body: JSON.stringify({ query, variables })
});

const data = await response.json();
```

### With GraphQL Client Libraries

```javascript
import { GraphQLClient } from 'graphql-request';

const client = new GraphQLClient(
  'https://azimuth-watcher.zenith-test.tlon.systems/graphql'
);

const query = `
  query GetPoint($point: String!) {
    point(id: $point) {
      owner sponsor active
    }
  }
`;

const data = await client.request(query, { point: '~sampel-palnet' });
```

## Rate Limiting and Best Practices

- **Rate Limits**: Public watcher endpoints have rate limiting in place. For production applications, consider running your own watcher instances.
- **Pagination**: Use pagination parameters for queries that return large result sets.
- **Caching**: Cache frequently accessed data to reduce API load.
- **Error Handling**: Implement proper error handling and retry logic for network failures.

!!! note "Watcher Documentation"
    For more information about the watcher architecture and deployment, see the [Watchers documentation](../documentation/watchers.md).