Free pulls in Arknights: Endfield are scattered across more channels than most players realize, and a single missed redemption can quietly delete ten Oroberyl from your future roster. This free pulls guide maps every confirmed source of banner currency, the sticker-style rewards that stack on top, and the troubleshooting steps that fix codes not working, invalid code errors, and silent code expiry so nothing slips through the cracks.
The Complete Free Pulls Stack in Arknights: Endfield
The free pull economy in Endfield is layered: promotional codes drop on a weekly cadence, sticker rewards piggyback on social posts, daily login bonuses drip currency into every active account, and milestone events top the whole stack with one-shot windfalls. According to the the official Endfield site (Portuguese), the launch window alone delivered mail rewards, a free six-star selector, and livestream codes that translated directly into banner pulls. Treating each channel as its own income source rather than waiting for "a code drop" is what separates a roster of two 6-stars from a roster of five after a single patch cycle.
The Four Primary Channels
Players who only check one place are leaving pulls on the table. The four primary channels feed the same Oroberyl wallet, but each runs on a different schedule and a different redemption path.
| Channel | Typical Cadence | Typical Reward | Expiry Risk |
|---|---|---|---|
| Livestream codes | Every 4-6 weeks | 10-30 Oroberyl per code | High — usually 7-14 days |
| Sticker / social codes | Weekly | 1-3 Oroberyl per code | Medium — 30 days typical |
| Daily login events | Per version cycle | 10 Oroberyl per 7-day streak | Low — version-tied |
| Milestone events | Per major patch | 20-60 Oroberyl one-shot | None — auto-claimed |
Secondary Stacks Worth Tracking
Beyond the four primary channels, three secondary stacks quietly feed the same wallet. The arms insp kit code drops appear in partnership posts and inside specific livestream mail, the Arknights: Endfield pre-registration rewards hub lists every legacy code from the launch campaign, and community reports indicate that limited-time mail from collab events occasionally includes T-Creds that can be funneled into supply pulls rather than operator pulls. None of these stacks is large enough to build a roster on its own, but stacked together they routinely add 20-40 pulls per version.
How to Redeem a Code and Fix Codes Not Working
Every code in Arknights: Endfield is redeemed through the in-game menu, not the official site, and the exact path matters because a wrong tap can produce a generic "invalid code" message even when the code is healthy. According to the official Arknights: Endfield redemption walkthrough, the path runs through Settings → Platform and Account → Exchange Code, and every reward lands in the in-game mailbox rather than the inventory directly.
The Exact Redemption Path
The redemption path is short but the order of taps is unforgiving, especially because the Exchange Code entry sits one layer deeper than most players expect.
| Step | Action | Common Mistake |
|---|---|---|
| 1 | Open the pause menu from any screen | Tapping the gear icon, not the pause button |
| 2 | Select Settings | Skipping past Settings to Account directly |
| 3 | Open Platform and Account | Looking under Profile instead |
| 4 | Tap Exchange Code | Searching for a "Codes" tab on the main menu |
| 5 | Type the code exactly, confirm | Auto-correct capitalizing letters |
| 6 | Open Mail from the main lobby to claim | Closing the dialog and forgetting the mail |
Fixing Codes Not Working and Invalid Code Errors
Codes not working in Arknights: Endfield almost always trace back to one of five root causes, and walking the list in order resolves the issue faster than blind retrying. Start with spelling because the most common cause is a single capital letter auto-corrected by a phone keyboard, then check the platform because codes can be region-locked to the server your account was created on, then check the date because the error message is identical for "wrong server" and "code expired," then check the redemption cap because some milestone codes cap at the first million accounts, and finally restart the client because mail sometimes caches a failed state across a session.
| Symptom | Most Likely Cause | Fix |
|---|---|---|
| "Invalid code" on first try | Auto-correct capitalization | Re-type the code in all caps manually |
| Same code rejected twice | Already redeemed on this account | Check Mail — the reward may have arrived |
| Code worked on alt, fails here | Region / server lock | Confirm the code is tagged for your server region |
| Code worked last patch, fails now | Code expiry window passed | Check the drop date against the posted expiry |
| Code rejects, mail empty | Cached session state | Fully close and relaunch the client |
Code Expiry and the 30-Day Mail Trap
Even after a successful redemption, a code reward is not actually yours until the mail is opened, and according to the official redemption guide, in-game mail expires after roughly thirty days. A player who banks ten codes during a busy patch and then takes a two-week break can lose every unopened mail attachment to the timer. The fix is mechanical: open Mail from the main lobby at least once per week, and treat any unopened mail with pull-currency attachments as a same-day priority.
Sticker Codes, Daily Codes, and the Arms Insp Kit Code
The sticker-style rewards in Arknights: Endfield are the easiest pulls to overlook because each one is small, but the cadence is aggressive enough that skipping a week costs a multi-pull. A sticker code is usually distributed as a screenshot of a stylized image that the game asks you to recognize, the answer goes into the standard Exchange Code field, and the reward lands in mail like any other code. Daily codes follow the same redemption path but drop on a stricter schedule, often tied to a recurring social post rather than a livestream.
Sticker Code Recognition and Sources
Sticker codes are most commonly distributed through the official social channels, where the game posts an image with a hidden string and the community decodes it within hours. Community reports suggest that a healthy week produces three to five sticker codes, each worth one to three Oroberyl, and that codes shared by smaller fan accounts are more likely to be expired or mis-copied than codes from the primary account. The Arknights: Endfield free codes list is the cleanest single-page reference for active sticker drops because it filters the noise from social feeds.
Daily Codes and Login Stacks
Daily codes are sometimes a misnomer because the actual daily source is the login bonus itself, which is auto-claimed and not a code at all. The confusion comes from version-cycle events that drop a small code on each weekday for a two-week stretch, which collectively deliver enough Oroberyl for a single multi-pull. The pattern is reliable enough that planning around it matters: a player who skips a weekday's code effectively gives back a pull that the rest of the week's logins cannot recover.
The Arms Insp Kit Code and Other Named Drops
The arms insp kit code is one of several named drops that show up inside specific livestream mail, and it converts into a consumable that boosts weapon ascension materials rather than pulling operators directly. Named drops tend to appear in three flavors: pull-currency codes (Oroberyl), material kits (arms insp kit and similar), and T-Cred bundles that can be spent in the supply shop. Players who only value operator pulls sometimes dismiss the material kits, but the arms insp kit in particular compresses a week of weapon-farming into a single claim, which indirectly accelerates the operator ceiling by freeing daily stamina for the gacha grind.
| Named Drop Type | What It Actually Is | Why It Matters for Free Pulls |
|---|---|---|
| Oroberyl code | Direct pull currency | One pull per 10 Oroberyl, no conversion |
| Arms insp kit code | Weapon ascension consumable | Frees stamina from weapon farming to gacha |
| T-Cred bundle | Shop currency | Buys supply pulls at a 1:1 rate in the shop |
| Stamina refill | Mission attempts | More attempts = more weekly Oroberyl from comms |
Maximizing the Value of Every Free Pull in Endfield
Free pulls only matter if they convert into a usable roster, and the conversion rate depends entirely on banner discipline. The default mistake is to spend every free pull on whatever banner is currently featured, because featured banners rotate every two to three weeks and a 50/50 loss on a non-rate-up character is a permanent tax on the free pull budget. The Arknights: Endfield active codes archive is worth checking every Monday because new codes tend to land at the start of a banner window, which is the cheapest moment to spend them on a banner you have already committed to.
Banner Discipline and the Free-Pull Math
A version cycle delivers roughly 60-100 free pulls across all channels combined, and that budget is large enough to guarantee a featured 6-star if the pity is banked rather than scattered. The math is straightforward: pity at 60 pulls on a featured banner, three banners per version, and 20-30 free pulls per banner means a free-to-play player can soft-pity one rate-up character per patch if they resist the urge to pull on off-banners. Spending 10 free pulls on a 50/50 loss costs 10 pulls of progress toward the next guaranteed character, which compounds across a version.
| Spending Pattern | Result Over One Version | Free 6-Star Rate |
|---|---|---|
| Pull on every featured banner | 60-100 pulls spent, 1-2 featured chars | Low — pity resets often |
| Save for one banner per version | 60-100 pulls on one target, soft-pity hit | High — pity nearly guaranteed |
| Spend on weapon banner | Same Oroberyl, worse roster return | Low — weapon pity is steeper |
Pairing Free Pulls with the Daily Loop
Free pulls are the headline number, but the daily loop is what determines how many additional pulls the same week of play produces. Commissions, the daily stamina cap, and weekly boss resets all convert into Oroberyl or T-Creds that compound on top of code drops, and a player who runs the daily loop consistently banks an extra 20-30 pulls per version compared to a player who only logs in for code redemption. The Arknights: Endfield beginner guide and early progression page frames this as the first ten hours mattering more than any single pull, and the same logic holds at the version level: the player who runs the loop every day is the player whose free pulls land on a full pity bar.
Troubleshooting Free Pulls: Common Drop and Redemption Failures
Even with a clean redemption habit, free pulls in Arknights: Endfield can disappear at three specific failure points: the code itself, the redemption path, and the mail claim. The first failure is environmental (the code has expired or was never valid for your server), the second is procedural (the redemption tap happened in the wrong menu), and the third is habitual (the mail was never opened before the 30-day timer). Each one has a distinct signature, and diagnosing the signature correctly is faster than brute-forcing every possible fix.
Diagnosing the Failure Point
When a code seemingly disappears, the first question is whether the code itself was ever valid for your account. A code shared from a fan account for a different server region will reject with the same "invalid code" message as a code that expired yesterday, and the only way to tell them apart is to check the original drop source. If the code is from a livestream within the last seven days and your server matches the stream's region, the code is almost certainly valid and the issue is procedural rather than environmental.
| Failure Point | Symptom | Time to Confirm |
|---|---|---|
| Code never valid | Rejects on first try, no Mail entry | 30 seconds — check the original drop source |
| Wrong menu path | Sub-menu doesn't show Exchange Code | 10 seconds — retrace the Settings path |
| Mail never opened | Code redeemed, Mail shows attachment | 60 seconds — open Mail, claim item |
| Cached session state | Mail shows no item despite success | 2 minutes — full client restart, recheck Mail |
Diagnosing a Sticker Code That Will Not Redeem
Sticker codes that already expired still carry value as reference, because the drop pattern is regular enough that a player who logged an expired sticker code last week can predict when the next one lands. Community-maintained archives keep the full text of expired codes for this reason, and the Arknights: Endfield expired codes archive is the cleanest reference for predicting the cadence of current drops. Expired codes will still reject with "invalid code" on the redemption screen, which is why trying to redeem a known-expired code is a useful diagnostic step: if the rejection message matches a healthy code's rejection, the code path itself is fine and the issue is the specific string.
Tracking New Free Pulls Without Missing a Drop
The single largest source of missed free pulls in Endfield is not an expired code but a code the player never saw in the first place, and the fix is a tracking habit rather than a faster refresh cycle. Codes drop on at least four separate channels, on overlapping but not identical schedules, and a player who only watches one channel will systematically miss every drop that lands on the other three. The minimum viable tracking stack is a bookmarked codes page, a primary-account social follow, a weekly livestream calendar entry, and a Mail check at the start of every play session.
The Minimum Viable Tracking Stack
The four pieces of the tracking stack each cover a different failure mode, and dropping any one of them opens a specific gap in pull income. The codes page covers text-based drops, the social follow covers sticker images, the livestream calendar covers the largest one-shot windfalls, and the Mail check catches rewards that arrived but were never opened.
| Tracking Channel | What It Catches | Refresh Frequency |
|---|---|---|
| Active codes page | Text codes from all sources | Daily during a banner, weekly otherwise |
| Official social follow | Sticker codes, partnership drops | Once per day |
| Livestream calendar | Big one-shot codes, mail rewards | Once per version, set reminder |
| Mail inbox check | Any unclaimed attachments | Every play session, 30 seconds |
Layering Free Pulls With the Login Bonus
The login bonus is the only pull source that requires zero tracking because it is auto-claimed on the first login of each day of a version-tied event, but it is also the source that compounds fastest when paired with a Mail check. A player who logs in daily and opens Mail at the same time stacks every available source into a single five-minute routine, which is the entire daily loop the version cycle is designed around. Skipping the Mail check breaks the stack even when every other channel is firing, because the 30-day mail timer continues to run on attachments the player never opened.
Frequently Asked Questions
Why is my code not working in Arknights: Endfield?
The most common cause is auto-correct capitalizing a letter when the code was typed on a phone keyboard, and the second most common is a server region mismatch. Re-type the code in all caps manually, confirm the code was tagged for your server region, and fully close and relaunch the client to clear any cached failure state. If the rejection persists, the code is almost certainly expired and the original drop source will show the expiry date.
What does "invalid code" actually mean?
Invalid code in Arknights: Endfield is a generic error that covers at least three distinct problems: the code was mistyped, the code was never valid for your server, or the code has already expired. The error message is identical in all three cases, which is why the fix is to walk the diagnostic list in order: spelling first, then server region, then expiry date, then a client restart to clear cached state.
How long do codes last before they expire?
Most livestream codes expire within 7-14 days, sticker codes typically last 30 days, and milestone codes usually have no expiry because they are tied to an account-creation event rather than a calendar date. Once a code is successfully redeemed, the resulting in-game mail expires after roughly 30 days if unopened, so banked mail should be claimed weekly.
Where do I find new daily codes?
Daily codes are most reliably posted on the official social channels during weekday windows tied to specific version events, and the cleanest single-page reference is the active codes archive. Community-maintained archives refresh within hours of each drop and filter out the noise from social feeds, which is faster than scrolling a primary account.
What is the arms insp kit code used for?
The arms insp kit code converts into a consumable that boosts weapon ascension materials, which indirectly accelerates the operator ceiling by freeing daily stamina from weapon farming to the gacha grind. It is not a pull-currency code itself, but stacking it alongside Oroberyl codes is what turns a small weekly drop into a meaningful version-cycle boost.