Arkham
Arkham Risk API

The Risk API from Arkham — 5 operation(s) for risk.
Documentation GitHub OpenAPI
OpenAPI Specification

openapi: 3.0.0
info:
  title: Arkham Intel Analytics Risk API
  version: 1.1.0
tags:
- name: Risk
paths:
  /risk/address/batch:
    post:
      summary: Get risk scores for multiple addresses in one request
      description: Batched version of GET /risk/address/:address. Accepts up to 200 addresses and returns a map keyed by the address the caller sent.
      operationId: GetRiskScoreAddressBatch
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/GetRiskScoreAddressBatchRequest'
        required: true
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                type: object
                additionalProperties:
                  $ref: '#/components/schemas/RiskScoreResponse'
                example:
                  abc123:
                    address: '0x6068A806a62DBb6a42E1A83e17E249bF4f8dB3aB'
                    chain_type: evm
                    darkweb_score: 0
                    gambling_score: 0
                    greatest_risk_category: hacker
                    greatest_risk_category_backward: abc123
                    greatest_risk_category_forward: hacker
                    hacker_score: 66
                    hop_distance: 1
                    is_seed: false
                    max_hop_reached: 1
                    max_score: 66
                    max_score_backward: 0
                    max_score_forward: 66
                    mixed_kyc_service_score: 0
                    mixer_score: 0
                    non_kyc_service_score: 0
                    ponzi_score: 0
                    privacy_score: 0
                    ransomware_score: 0
                    risk_level: HIGH
                    risk_weighted_incoming_usd: 1503.02
                    risk_weighted_outgoing_usd: 0
                    sanctioned_1hop_score: 0
                    sanctions_score: 0
                    scam_score: 0
                    token_blacklist_score: 0
                    top_sources:
                    - contribution_pct: 100
                      contribution_usd: 1503.02
                      direction: forward
                      first_ts: '2019-11-14T00:00:00Z'
                      hop_distance: 1
                      last_ts: '2019-12-13T00:00:00Z'
                      risk_category: hacker
                      seed_address: '0x851d8fe098341d5592DbBC7bCd4388F73c16291b'
                    updated_at: '2025-12-16T03:06:14Z'
        '400':
          description: Bad Request
        '500':
          description: Internal Server Error
      tags:
      - Risk
  /risk/address/{address}:
    get:
      summary: Get risk score for an address
      description: Returns a compliance risk score for the specified blockchain address, including exposure categories and risk factors.
      operationId: GetRiskScoreAddress
      parameters:
      - name: address
        in: path
        description: The blockchain address to query.
        required: true
        schema:
          type: string
          description: The blockchain address to query.
          example: '0x6068A806a62DBb6a42E1A83e17E249bF4f8dB3aB'
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/RiskScoreResponse'
        '400':
          description: Bad Request
        '500':
          description: Internal Server Error
      tags:
      - Risk
  /risk/address/{address}/paths:
    get:
      summary: Get seed-to-target paths for an address's risk score
      description: Returns the dominant address chains linking the queried address back to each risky seed. Results are rolled up by chain_type (EVM chains collapse to 'evm').
      operationId: GetRiskScoreAddressPaths
      parameters:
      - name: address
        in: path
        description: The blockchain address to trace.
        required: true
        schema:
          type: string
          description: The blockchain address to trace.
          example: '0x6068A806a62DBb6a42E1A83e17E249bF4f8dB3aB'
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/GetRiskScoreAddressPathsResponse'
        '400':
          description: Bad Request
        '500':
          description: Internal Server Error
      tags:
      - Risk
  /risk/entity/batch:
    post:
      summary: Get risk scores for multiple entities in one request
      description: Batched version of GET /risk/entity/:entity_id. Accepts up to 200 entity IDs and returns a map keyed by entity ID.
      operationId: GetRiskScoreEntityBatch
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/GetRiskScoreEntityBatchRequest'
        required: true
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                type: object
                additionalProperties:
                  $ref: '#/components/schemas/RiskScoreEntityResponse'
                example:
                  abc123:
                    darkweb_score: 1
                    entity_id: binance
                    entity_name: Binance
                    entity_type: exchange
                    gambling_score: 1
                    greatest_risk_category: hacker
                    greatest_risk_category_backward: abc123
                    greatest_risk_category_forward: abc123
                    hacker_score: 1
                    highest_risk_address: abc123
                    max_score: 66
                    max_score_backward: 1
                    max_score_forward: 1
                    mixed_kyc_service_score: 1
                    mixer_score: 1
                    non_kyc_service_score: 1
                    ponzi_score: 1
                    privacy_score: 1
                    ransomware_score: 1
                    risk_level: HIGH
                    risky_addresses: 3
                    risky_addresses_backward: 1
                    risky_addresses_forward: 1
                    sanctions_score: 1
                    scam_score: 1
                    seed_addresses: 1
                    token_blacklist_score: 1
                    top_seed_addresses:
                    - address: abc123
                      chain_type: evm
                      risk_category: mixed-kyc-service
                      seed_score: 30
                    top_sources:
                    - contribution_usd: 1.23
                      direction: forward
                      hop_distance: 1
                      risk_category: hacker
                      seed_address: abc123
                    updated_at: abc123
        '400':
          description: Bad Request
        '500':
          description: Internal Server Error
      tags:
      - Risk
  /risk/entity/{entity_id}:
    get:
      summary: Get entity-level risk score
      description: Returns the aggregated risk score for an entity, computed as the maximum across all of the entity's addresses.
      operationId: GetRiskScoreEntity
      parameters:
      - name: entity_id
        in: path
        description: The entity identifier to query.
        required: true
        schema:
          type: string
          description: The entity identifier to query.
          example: binance
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/RiskScoreEntityResponse'
        '400':
          description: Bad Request
        '500':
          description: Internal Server Error
      tags:
      - Risk
components:
  schemas:
    RiskScorePathNodeAPIType:
      required:
      - address
      - hop_distance
      type: object
      properties:
        address:
          type: string
          description: Address at this position in the path.
          example: '0x40B9b889A21Ff1534d018D71Dc406122EBcf3F5A'
        hop_distance:
          type: integer
          description: Hop distance from the seed for this node (0 = seed itself).
          example: 0
      example:
        address: '0x40B9b889A21Ff1534d018D71Dc406122EBcf3F5A'
        hop_distance: 0
    RiskScoreEntitySourceAPIType:
      required:
      - seed_address
      - risk_category
      - direction
      - contribution_usd
      - hop_distance
      type: object
      properties:
        contribution_usd:
          type: number
          description: Risk-weighted USD attributed to this seed, summed across the entity's addresses.
          example: 1.23
        direction:
          type: string
          description: '''forward'' = seed sent into entity addresses; ''backward'' = entity addresses funded the seed.'
          example: forward
        hop_distance:
          type: integer
          description: Shortest hop distance from this seed to any of the entity's addresses.
          example: 1
        risk_category:
          type: string
          description: Risk category of the seed.
          example: hacker
        seed_address:
          type: string
          description: External risk seed address.
          example: abc123
      example:
        contribution_usd: 1.23
        direction: forward
        hop_distance: 1
        risk_category: hacker
        seed_address: abc123
    RiskScoreEntitySeedAddressAPIType:
      required:
      - chain_type
      - address
      - risk_category
      - seed_score
      type: object
      properties:
        address:
          type: string
          example: abc123
        chain_type:
          type: string
          example: evm
        risk_category:
          type: string
          description: The category that made this address a seed.
          example: mixed-kyc-service
        seed_score:
          type: integer
          description: Raw seed score assigned by the upstream tag/entity-type rule.
          example: 30
      example:
        address: abc123
        chain_type: evm
        risk_category: mixed-kyc-service
        seed_score: 30
    GetRiskScoreAddressPathsResponse:
      required:
      - address
      - paths
      type: object
      properties:
        address:
          type: string
          description: The queried address.
          example: '0x6068A806a62DBb6a42E1A83e17E249bF4f8dB3aB'
        paths:
          type: array
          items:
            $ref: '#/components/schemas/RiskScorePathAPIType'
          description: Top-contributing seed paths to this address, ordered by contribution USD.
          nullable: true
          example:
          - chain_type: evm
            contribution_usd: 1.23
            direction: forward
            hop_distance: 1
            path_nodes:
            - address: '0x40B9b889A21Ff1534d018D71Dc406122EBcf3F5A'
              hop_distance: 0
            risk_category: hacker
            score: 1
            seed_address: '0x40B9b889A21Ff1534d018D71Dc406122EBcf3F5A'
      example:
        address: '0x6068A806a62DBb6a42E1A83e17E249bF4f8dB3aB'
        paths:
        - chain_type: evm
          contribution_usd: 1.23
          direction: forward
          hop_distance: 1
          path_nodes:
          - address: '0x40B9b889A21Ff1534d018D71Dc406122EBcf3F5A'
            hop_distance: 0
          risk_category: hacker
          score: 1
          seed_address: '0x40B9b889A21Ff1534d018D71Dc406122EBcf3F5A'
    GetRiskScoreAddressBatchRequest:
      required:
      - addresses
      type: object
      properties:
        addresses:
          type: array
          items:
            type: string
            example: abc123
          description: List of blockchain addresses to fetch risk scores for (max 200).
          nullable: true
          example:
          - abc123
      example:
        addresses:
        - abc123
    RiskScoreResponse:
      required:
      - chain_type
      - address
      - risk_level
      - is_seed
      type: object
      properties:
        address:
          type: string
          description: The queried address in its canonical format.
          example: '0x6068A806a62DBb6a42E1A83e17E249bF4f8dB3aB'
        chain_type:
          type: string
          description: Blockchain type for the address. May be empty if the address has no risk data.
          example: evm
        darkweb_score:
          type: integer
          description: Risk score for darkweb-related exposure (0-100).
          nullable: true
          example: 0
        gambling_score:
          type: integer
          description: Risk score for gambling-related exposure (0-100).
          nullable: true
          example: 0
        greatest_risk_category:
          type: string
          description: The category with the highest risk score.
          nullable: true
          example: hacker
        greatest_risk_category_backward:
          type: string
          description: Category with the highest backward propagation score.
          nullable: true
          example: abc123
        greatest_risk_category_forward:
          type: string
          description: Category with the highest forward propagation score.
          nullable: true
          example: hacker
        hacker_score:
          type: integer
          description: Risk score for hacker-related exposure (0-100).
          nullable: true
          example: 66
        hop_distance:
          type: integer
          description: Number of transaction hops to the nearest risky source.
          nullable: true
          example: 1
        is_seed:
          type: boolean
          description: True if this address is a direct risk source (seed), not scored via propagation.
          example: false
        max_hop_reached:
          type: integer
          description: Maximum hop distance analyzed in the risk computation.
          nullable: true
          example: 1
        max_score:
          type: integer
          description: The highest individual category score, used to derive risk_level.
          nullable: true
          example: 66
        max_score_backward:
          type: integer
          description: Highest risk score from backward propagation (funds sent to risky sources).
          nullable: true
          example: 0
        max_score_forward:
          type: integer
          description: Highest risk score from forward propagation (funds received from risky sources).
          nullable: true
          example: 66
        mixed_kyc_service_score:
          type: integer
          description: Risk score for mixed-KYC service exposure (0-100).
          nullable: true
          example: 0
        mixer_score:
          type: integer
          description: Risk score for mixer-related exposure (0-100).
          nullable: true
          example: 0
        non_kyc_service_score:
          type: integer
          description: Risk score for non-KYC service exposure (0-100).
          nullable: true
          example: 0
        ponzi_score:
          type: integer
          description: Risk score for ponzi-related exposure (0-100).
          nullable: true
          example: 0
        privacy_score:
          type: integer
          description: Risk score for privacy-protocol-related exposure (0-100).
          nullable: true
          example: 0
        ransomware_score:
          type: integer
          description: Risk score for ransomware-related exposure (0-100).
          nullable: true
          example: 0
        risk_level:
          type: string
          description: 'Overall risk level: NONE, LOW, MEDIUM, HIGH, or SEVERE.'
          example: HIGH
        risk_weighted_incoming_usd:
          type: number
          description: Total risk-weighted USD that reached this address from upstream risky sources (forward propagation).
          nullable: true
          example: 1503.02
        risk_weighted_outgoing_usd:
          type: number
          description: Total risk-weighted USD this address sent toward downstream risky sources (backward propagation).
          nullable: true
          example: 0
        sanctioned_1hop_score:
          type: integer
          description: Risk score for direct (1-hop) high-risk entity exposure (0-100).
          nullable: true
          example: 0
        sanctions_score:
          type: integer
          description: Risk score for sanctions-related exposure (0-100).
          nullable: true
          example: 0
        scam_score:
          type: integer
          description: Risk score for scam-related exposure (0-100).
          nullable: true
          example: 0
        token_blacklist_score:
          type: integer
          description: Risk score for blacklisted-token-related exposure (0-100).
          nullable: true
          example: 0
        top_sources:
          type: array
          items:
            $ref: '#/components/schemas/RiskScoreSourceAPIType'
          description: Top contributing sources to the risk score, ranked by contribution.
          example:
          - contribution_pct: 100
            contribution_usd: 1503.02
            direction: forward
            first_ts: '2019-11-14T00:00:00Z'
            hop_distance: 1
            last_ts: '2019-12-13T00:00:00Z'
            risk_category: hacker
            seed_address: '0x851d8fe098341d5592DbBC7bCd4388F73c16291b'
        updated_at:
          type: string
          description: Timestamp of the most recent risk score update (RFC3339).
          nullable: true
          example: '2025-12-16T03:06:14Z'
      example:
        address: '0x6068A806a62DBb6a42E1A83e17E249bF4f8dB3aB'
        chain_type: evm
        darkweb_score: 0
        gambling_score: 0
        greatest_risk_category: hacker
        greatest_risk_category_backward: abc123
        greatest_risk_category_forward: hacker
        hacker_score: 66
        hop_distance: 1
        is_seed: false
        max_hop_reached: 1
        max_score: 66
        max_score_backward: 0
        max_score_forward: 66
        mixed_kyc_service_score: 0
        mixer_score: 0
        non_kyc_service_score: 0
        ponzi_score: 0
        privacy_score: 0
        ransomware_score: 0
        risk_level: HIGH
        risk_weighted_incoming_usd: 1503.02
        risk_weighted_outgoing_usd: 0
        sanctioned_1hop_score: 0
        sanctions_score: 0
        scam_score: 0
        token_blacklist_score: 0
        top_sources:
        - contribution_pct: 100
          contribution_usd: 1503.02
          direction: forward
          first_ts: '2019-11-14T00:00:00Z'
          hop_distance: 1
          last_ts: '2019-12-13T00:00:00Z'
          risk_category: hacker
          seed_address: '0x851d8fe098341d5592DbBC7bCd4388F73c16291b'
        updated_at: '2025-12-16T03:06:14Z'
    RiskScorePathAPIType:
      required:
      - chain_type
      - seed_address
      - risk_category
      - direction
      - path_nodes
      type: object
      properties:
        chain_type:
          type: string
          description: Chain type (EVM chains collapse to 'evm').
          example: evm
        contribution_usd:
          type: number
          description: USD value traced along this path.
          nullable: true
          example: 1.23
        direction:
          type: string
          description: '''forward'' = seed sent to target; ''backward'' = target sent to seed.'
          example: forward
        hop_distance:
          type: integer
          description: Number of hops from seed to target.
          nullable: true
          example: 1
        path_nodes:
          type: array
          items:
            $ref: '#/components/schemas/RiskScorePathNodeAPIType'
          description: Dominant address chain from seed to target.
          nullable: true
          example:
          - address: '0x40B9b889A21Ff1534d018D71Dc406122EBcf3F5A'
            hop_distance: 0
        risk_category:
          type: string
          description: Risk category of the seed.
          example: hacker
        score:
          type: integer
          description: Risk score contributed by this path at the target (0-100).
          nullable: true
          example: 1
        seed_address:
          type: string
          description: Risky source address this path traces back to.
          example: '0x40B9b889A21Ff1534d018D71Dc406122EBcf3F5A'
      example:
        chain_type: evm
        contribution_usd: 1.23
        direction: forward
        hop_distance: 1
        path_nodes:
        - address: '0x40B9b889A21Ff1534d018D71Dc406122EBcf3F5A'
          hop_distance: 0
        risk_category: hacker
        score: 1
        seed_address: '0x40B9b889A21Ff1534d018D71Dc406122EBcf3F5A'
    RiskScoreEntityResponse:
      required:
      - entity_id
      - risk_level
      type: object
      properties:
        darkweb_score:
          type: integer
          description: Entity-level darkweb score (0-100).
          nullable: true
          example: 1
        entity_id:
          type: string
          description: The entity identifier.
          example: binance
        entity_name:
          type: string
          description: Human-readable entity name.
          nullable: true
          example: Binance
        entity_type:
          type: string
          description: Entity classification type.
          nullable: true
          example: exchange
        gambling_score:
          type: integer
          description: Entity-level gambling score (0-100).
          nullable: true
          example: 1
        greatest_risk_category:
          type: string
          description: Category with the highest risk score.
          nullable: true
          example: hacker
        greatest_risk_category_backward:
          type: string
          description: Category with the highest backward propagation score.
          nullable: true
          example: abc123
        greatest_risk_category_forward:
          type: string
          description: Category with the highest forward propagation score.
          nullable: true
          example: abc123
        hacker_score:
          type: integer
          description: Entity-level hacker score (0-100).
          nullable: true
          example: 1
        highest_risk_address:
          type: string
          description: Address with the highest risk score in this entity.
          nullable: true
          example: abc123
        max_score:
          type: integer
          description: Highest weighted entity-level score across all categories.
          nullable: true
          example: 66
        max_score_backward:
          type: integer
          description: Highest backward propagation score across entity addresses.
          nullable: true
          example: 1
        max_score_forward:
          type: integer
          description: Highest forward propagation score across entity addresses.
          nullable: true
          example: 1
        mixed_kyc_service_score:
          type: integer
          description: Entity-level mixed-KYC service score (0-100).
          nullable: true
          example: 1
        mixer_score:
          type: integer
          description: Entity-level mixer score (0-100).
          nullable: true
          example: 1
        non_kyc_service_score:
          type: integer
          description: Entity-level non-KYC service score (0-100).
          nullable: true
          example: 1
        ponzi_score:
          type: integer
          description: Entity-level ponzi score (0-100).
          nullable: true
          example: 1
        privacy_score:
          type: integer
          description: Entity-level privacy score (0-100).
          nullable: true
          example: 1
        ransomware_score:
          type: integer
          description: Entity-level ransomware score (0-100).
          nullable: true
          example: 1
        risk_level:
          type: string
          description: 'Overall risk level: NONE, LOW, MEDIUM, HIGH, or SEVERE.'
          example: HIGH
        risky_addresses:
          type: integer
          description: Number of entity addresses with a risk score >= 10.
          nullable: true
          example: 3
        risky_addresses_backward:
          type: integer
          description: Entity addresses with backward risk score >= 10.
          nullable: true
          example: 1
        risky_addresses_forward:
          type: integer
          description: Entity addresses with forward risk score >= 10.
          nullable: true
          example: 1
        sanctions_score:
          type: integer
          description: Entity-level sanctions score (0-100).
          nullable: true
          example: 1
        scam_score:
          type: integer
          description: Entity-level scam score (0-100).
          nullable: true
          example: 1
        seed_addresses:
          type: integer
          description: Number of entity addresses that are direct risk sources (seeds from tags/entity type).
          nullable: true
          example: 1
        token_blacklist_score:
          type: integer
          description: Entity-level token-blacklist score (0-100).
          nullable: true
          example: 1
        top_seed_addresses:
          type: array
          items:
            $ref: '#/components/schemas/RiskScoreEntitySeedAddressAPIType'
          description: Top addresses within this entity that are themselves risk seeds, sorted by seed score.
          example:
          - address: abc123
            chain_type: evm
            risk_category: mixed-kyc-service
            seed_score: 30
        top_sources:
          type: array
          items:
            $ref: '#/components/schemas/RiskScoreEntitySourceAPIType'
          description: Top external risk seeds whose funds reached this entity's addresses (or that this entity's addresses funded), aggregated across all entity addresses.
          example:
          - contribution_usd: 1.23
            direction: forward
            hop_distance: 1
            risk_category: hacker
            seed_address: abc123
        updated_at:
          type: string
          description: Timestamp of the most recent update (RFC3339).
          nullable: true
          example: abc123
      example:
        darkweb_score: 1
        entity_id: binance
        entity_name: Binance
        entity_type: exchange
        gambling_score: 1
        greatest_risk_category: hacker
        greatest_risk_category_backward: abc123
        greatest_risk_category_forward: abc123
        hacker_score: 1
        highest_risk_address: abc123
        max_score: 66
        max_score_backward: 1
        max_score_forward: 1
        mixed_kyc_service_score: 1
        mixer_score: 1
        non_kyc_service_score: 1
        ponzi_score: 1
        privacy_score: 1
        ransomware_score: 1
        risk_level: HIGH
        risky_addresses: 3
        risky_addresses_backward: 1
        risky_addresses_forward: 1
        sanctions_score: 1
        scam_score: 1
        seed_addresses: 1
        token_blacklist_score: 1
        top_seed_addresses:
        - address: abc123
          chain_type: evm
          risk_category: mixed-kyc-service
          seed_score: 30
        top_sources:
        - contribution_usd: 1.23
          direction: forward
          hop_distance: 1
          risk_category: hacker
          seed_address: abc123
        updated_at: abc123
    RiskScoreSourceAPIType:
      required:
      - seed_address
      - risk_category
      - direction
      - contribution_pct
      - contribution_usd
      - hop_distance
      type: object
      properties:
        contribution_pct:
          type: number
          description: Percentage contribution of this source to the risk assessment.
          example: 100
        contribution_usd:
          type: number
          description: USD value of funds traced to this risky source.
          example: 1503.02
        direction:
          type: string
          description: 'Direction of risk flow: ''forward'' (seed sent to this address) or ''backward'' (this address funded the seed).'
          example: forward
        first_ts:
          type: string
          description: Timestamp of the first transaction linking to this source (RFC3339).
          nullable: true
          example: '2019-11-14T00:00:00Z'
        hop_distance:
          type: integer
          description: Number of transaction hops from the queried address to this source.
          example: 1
        last_ts:
          type: string
          description: Timestamp of the last transaction linking to this source (RFC3339).
          nullable: true
          example: '2019-12-13T00:00:00Z'
        risk_category:
          type: string
          description: Risk category of this source.
          example: hacker
        seed_address:
          type: string
          description: Address of the risky source entity.
          example: '0x851d8fe098341d5592DbBC7bCd4388F73c16291b'
      example:
        contribution_pct: 100
        contribution_usd: 1503.02
        direction: forward
        first_ts: '2019-11-14T00:00:00Z'
        hop_distance: 1
        last_ts: '2019-12-13T00:00:00Z'
        risk_category: hacker
        seed_address: '0x851d8fe098341d5592DbBC7bCd4388F73c16291b'
    GetRiskScoreEntityBatchRequest:
      required:
      - entity_ids
      type: object
      properties:
        entity_ids:
          type: array
          items:
            type: string
            example: abc123
          description: List of entity IDs to fetch risk scores for (max 200).
          nullable: true
          example:
          - abc123
      example:
        entity_ids:
        - abc123
Arkham Risk API

Documentation

Specifications

Other Resources

OpenAPI Specification
