> ## Documentation Index
> Fetch the complete documentation index at: https://dash-docs.nomos.trade/llms.txt
> Use this file to discover all available pages before exploring further.

# First Seen

> When each wallet first touched Polymarket (its earliest fill, split, merge, conversion or transfer): how to spot fresh wallets.



## OpenAPI

````yaml /openapi.json get /v1/wallets/first-seen
openapi: 3.1.0
info:
  title: Codex API
  version: 1.0.0
  description: >-
    Nomos's Polymarket index, rebuilt from Polygon: holders, positions, PnL,
    trades, leaderboards and live fills.
servers:
  - url: https://codex-api.nomos.trade
security:
  - bearerAuth: []
tags:
  - name: Markets
  - name: Wallets
  - name: Leaderboard
  - name: Events
  - name: Fills
  - name: Crypto Strikes
  - name: Health
paths:
  /v1/wallets/first-seen:
    get:
      tags:
        - Wallets
      summary: First Seen
      description: >-
        When each wallet first touched Polymarket (its earliest fill, split,
        merge, conversion or transfer): how to spot fresh wallets.
      operationId: first-seen
      parameters:
        - name: wallets
          in: query
          required: true
          description: Up to 100 wallets, comma separated. Malformed entries are skipped.
          schema:
            type: string
          example: >-
            0x885783760858e1bd5dd09a3c3f916cfa251ac270,0x56687bf447db6ffa42ffe2204a05edaa20f55839
      responses:
        '200':
          description: OK
          headers:
            x-ratelimit-limit:
              description: Your rate, requests a minute.
              schema:
                type: integer
            x-ratelimit-remaining:
              description: Requests left in your bucket.
              schema:
                type: integer
          content:
            application/json:
              schema:
                type: object
                properties:
                  block:
                    type: integer
                    description: The finalized block the answer reflects.
                  firstSeen:
                    type: object
                    additionalProperties:
                      type:
                        - integer
                        - 'null'
                    description: Every wallet asked, unix seconds; null when unknown.
              example:
                block: 94812402
                firstSeen:
                  '0x885783760858e1bd5dd09a3c3f916cfa251ac270': 1746921600
                  '0x56687bf447db6ffa42ffe2204a05edaa20f55839': 1783987320
        '401':
          $ref: '#/components/responses/Unauthorized'
        '429':
          $ref: '#/components/responses/RateLimited'
        '503':
          description: 'Not ready, or off: retry later'
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
              examples:
                e0:
                  summary: wallet ages are still seeding
                  value:
                    error: wallet ages are still seeding
components:
  responses:
    Unauthorized:
      description: No key, or an unknown or revoked one.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
          example:
            error: unknown or revoked API key
    RateLimited:
      description: >-
        Over your rate, or more than 4 requests (2 streams) at once. Wait
        `Retry-After` seconds.
      headers:
        retry-after:
          description: Seconds to wait.
          schema:
            type: integer
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
          example:
            error: 'rate limit: 600 requests a minute; retry in 1 s'
  schemas:
    Error:
      type: object
      properties:
        error:
          type: string
          description: What went wrong, for a person to read.
      description: Every error answer.
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      description: 'Your API key: `codex_` and 48 hex characters.'

````

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