generated: '2026-08-05'
method: searched
source: https://docs.wdk.tether.io/
x-note: >-
  Tether publishes no test-mode API keys, no magic test values and no fixture
  tooling — there is no test-vs-live key separation because there is only one key
  type, issued free. What it DOES publish is a real testnet path (Sepolia is a
  first-class indexer chain) and a repeated, explicit operational instruction to use
  a dedicated low-value development wallet. Captured as the shape it actually has
  rather than forced into the payments-sandbox template.
test_vs_live:
  key_modes: none
  key_prefixes: none
  x-note: >-
    A single X-API-KEY type covers all use. Keys are self-service via
    POST /api/v1/keys or the registration form, and are addressed by hash for
    deletion (DELETE /api/v1/keys/{hashedKey}), so rotating a compromised key does
    not require exposing its value.
testnets:
- name: Sepolia
  chain_id: sepolia
  indexer_supported: true
  tokens:
  - usdt
  evidence: >-
    `sepolia` appears in the blockchain path-parameter enum of the live OpenAPI and
    in the response of GET /api/v1/chains, alongside the mainnets.
  x-note: The only testnet the hosted Indexer API indexes.
custom_testnets:
  supported: true
  mechanism: >-
    `wdk network create` accepts a network spec with a `testnet: boolean` field and
    an optional `indexerSlug`. Without an indexerSlug, `wdk get history` is
    unavailable for that network — so a self-defined testnet gets wallet operations
    but not indexed history.
  docs: https://docs.wdk.tether.io/cli/guides/custom-networks
published_safety_guidance:
- source: https://docs.wdk.tether.io/ai/mcp-toolkit/get-started
  guidance: >-
    "Your seed phrase is stored locally in .vscode/mcp.json, which is gitignored.
    Always use a dedicated development wallet with limited funds."
- source: https://docs.wdk.tether.io/cli
  guidance: >-
    "Test integrations with a dedicated wallet and limited funds before relying on
    them."
- source: https://docs.wdk.tether.io/cli/reference/security-model
  guidance: Review the security model before unlocking a funded wallet or granting an
    agent access.
- source: https://docs.wdk.tether.io/ai/agent-skills
  guidance: >-
    All write operations require explicit human confirmation; the skill instructs
    agents to estimate fees before sending and includes prompt-injection protection
    guidance.
dry_run_pattern:
  supported: true
  mechanism: >-
    Every write path in the MCP toolkit and CLI has a paired quote/preview
    operation — quoteSendTransaction, quoteTransfer, quoteSwap, quoteBridge,
    quoteSupply, quoteWithdraw, quoteBorrow, quoteRepay, quoteBuy, quoteSell, and
    `wdk send --preview`. This is the provider's substitute for a sandbox: rehearse
    against mainnet, then confirm.
not_published:
- test-mode API keys
- test card numbers / test bank accounts
- hosted test tokens or fixtures
- test clocks or time simulation
- event/webhook trigger tooling
x-evidence:
  fetched: '2026-08-05'
  urls:
  - url: https://wdk-api.tether.io/api/v1/chains
    http_status: 200
  - url: https://docs.wdk.tether.io/cli/guides/custom-networks
    http_status: 200
  - url: https://docs.wdk.tether.io/ai/mcp-toolkit/get-started
    http_status: 200