Free-tier residential egress from URnetwork (ur.io) without a card, an email, or a browser. Everything runs over the public API — an account, an API key and up to five hosted proxies in about 20 seconds.

POST /auth/network-create   {"terms":true,"product_updates":false}   -> network.by_jwt
POST /auth/regenerate-seedphrase                                     -> seedphrase (24 words)
POST /account/api-key       {"name":"farm-1"}                        -> urn_... key
POST /network/auth-client   {"device_spec":"resident proxy",
                             "proxy_config":{"initial_device_state":{"country_code":"us"}}}
                                                                     -> https_proxy_url (creds inside)
GET  /network/proxies                                                -> every proxy of the account
GET  /subscription/balance                                           -> bytes left today

Base: https://api.bringyour.com. Auth: Authorization: Bearer <by_jwt | urn_key>.

Limits (measured 2026-11-13)

limit	value	proof
traffic per account	30 GiB / day, resets 00:00 UTC	`start_balance_byte_count: 32212254720`, `start_time 2026-11-13T00:00:00Z → end_time 2026-11-14T01:00:00Z`
active proxies	5 per account	6th call → `{"error":{"client_limit_exceeded":true,"upgrade_required":true,"message":"Your plan's limit of 5 active proxies is reached..."}}`
proxy creation rate	~5 / minute / account	429 on bursts; script sleeps 1.3 s
instant accounts per IP	~4, then 429	`Too many accounts have been created recently from your network address. This limit is scoped to the address you are connecting from and is shared with everyone`
countries	20+ residential providers	15 verified by `ipinfo` in one evening (US DE NL FR GB CA BR SE PL CH JP SG IT ES AT)

Bypass for the IP cap: create the first ~4 accounts directly, then feed their own proxy URLs back into the farm as rotating egress (--proxy-file px.txt). 8 more accounts went through with zero 429.

Pro tier ($3 first year, USDC/Zcash/Monero or card) raises it to 10 TiB/month and 1000 proxies.

Usage

# 5 accounts, 5 proxies each, direct connection
python ur_farm.py --count 5 --proxies 5 --bank bank.jsonl

# more accounts, rotating egress through proxies we already own
python ur_farm.py --count 20 --proxies 5 --proxy-file px.txt --bank bank.jsonl --start 500

# export every proxy URL into a flat pool
python collect.py bank.jsonl > pool.jsonl

# liveness pass over the pool (ipinfo through each proxy)
python verify.py pool.jsonl --limit 20

bank.jsonl line shape:

{"idx":300,"network_id":"...","name":"february-exhaust-83","jwt":"...","seed":"24 words",
 "urn":"urn_...","proxies":[{"cc":"us","url":"https://<token>@host:7155","socks":"socks5h://..."}]}

Proxy URL shape

https://<40-char-token>.crisp.bringyour.com:7155     # HTTPS CONNECT, token is the credential
socks5h://crisp.bringyour.com:7153                   # SOCKS5 with username/password auth
http://crisp.bringyour.com:7154                      # plain HTTP

https_proxy_url carries the token inline, so curl --proxy "$url" works as-is.

Pitfalls

country_code is mandatory in initial_device_state — omit it and the call answers Invalid location.
Exit IP is not pinned. The same proxy URL returned 188.103.48.237 AS3209 Vodafone Augsburg and later 80.171.40.200 AS6805 Telefonica Essen. Enable Fixed IP in the proxy options when a stable address matters, or treat stability as a known risk.
Save the seed before anything else. The account has no email and no password recovery; losing the JWT/seed loses the account.
Do not drive the browser for this. UI proxy creation needs clipboard reads that fail when the document is not focused, and copies the URL of the wrong card. GET /network/proxies returns every URL directly.
Proxies are residential but shared: several accounts can land on the same provider (two Vodafone Hildesheim exits were seen), so unique_ip is the metric, not alive.

Scope

Free-tier testing of a public API on accounts we create ourselves. No card data, no third-party accounts, no payment flows. Respect the provider's terms — this is a field note, not a licence.