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566 things you can use. Free ones stay free — the price is what you pay once, and if a listing claims something untrue you get your money back.
Filtersshelves, price, and more
Sorted by the ones we built and tested ourselves, then the most fully described.
Generative-Media GatewayMeter, cap, police and audit every AI image, video and audio call before it spends a dollar. An atomic prepaid ledger, a pre-submit content-policy gate and a 17-vendor adapter catalog -- the metering layer nothing off-the-shelf ships.
made and tested by usby ringbuffer · Code Recycle admin14 things it doesGet it — $0 · beta (was $399)
Source Connector SDKA provider-neutral SDK for building safe, evidence-backed data connectors. The connector contract, extraction ladder, tamper-evident evidence records and the SSRF, rate-limit and anti-stealth guardrails a real collection pipeline needs -- zero runtime dependencies.
made and tested by usby Code Recycle8 things it doesGet it — $0 · beta (was $79)
Stripe Entitlement LedgerThe paywall pattern where Stripe is never on the read path. An idempotent projection of webhook events into an entitlements table, so an access check is one indexed row lookup -- never a live Stripe call, never a client-supplied claim.
made and tested by usby ringbuffer · Code Recycle admin8 things it doesGet it — $0 · beta (was $59)
Control Signal RendererTurn a scene description into ControlNet-ready beauty, depth, segmentation and pose frames -- no 3D engine, no headless GL, no mesh pipeline. Analytic ray math over capsules and spheres, deterministic, never a frozen pose.
made and tested by usby Code Recycle6 things it doesGet it — $0 · beta (was $79)
Crawl Permission GateA compiler that refuses to run your scraper without a reviewed, approved policy record. Move the ban-or-lawsuit check to before the request goes out, and make the 'yes' unforgeable.
made and tested by usby datawright · Code Recycle maintainer6 things it doesGet it — $0 · beta (was $89)
Money & Unit Price EngineExact rational-arithmetic money and physical quantities for TypeScript. A $/oz unit price is one division, and rounding it to a display cent before comparing two package sizes is how 'cheaper per ounce' quietly becomes false.
made and tested by usby parsley · Code Recycle moderator6 things it doesGet it — $0 · beta (was $59)
Lookout — God's Eye TheaterA live 3D map theater you can fly: sensor-style looks, a scrubbable flight-track recorder, follow-cam, scenes and a cockpit HUD — running in your browser right now, on keyless imagery, with nothing to install.
made and tested by usby nightowl · Code Recycle maintainer5 things it doesGet it free
Material Textures — 24 surfaces24 material textures at 1024×1024: kraft paper, linen, oak, concrete, terrazzo, marble, leather, moss and more. Free, CC0.
made and tested by usby Code Recycle5 things it doesGet it free
Abstract Gradient Backgrounds — 24 wide wallpapers24 smooth abstract gradient backgrounds at 1344×768: hero backdrops, app wallpapers, slide backgrounds. Free, CC0.
made and tested by usby Code Recycle4 things it doesGet it freeFiles & uploads
CSV Numeric Cast VerdictA hex value in your CSV becomes 0, and nothing anywhere says so. Measured on csv-parse: 0xFF parses to 0 under cast:true — not an error, not a NaN, the number zero.
made and tested by usby parsley · Code Recycle moderator4 things it doesGet it — $0 · beta (was $39)
Flat Illustration Spots — 24 objects24 flat vector-style spot illustrations at 1024×1024: plant, coffee cup, rocket, lighthouse, globe, lantern, sailboat and more. Free, CC0.
made and tested by usby Code Recycle4 things it doesGet it freeTalking to AI models
LLM Price SeriesWhich models were deprecated since you shipped? What did that one cost in March? Nobody publishes the answer.
made and tested by usby dropbear · Code Recycle reviewer4 things it doesGet it — $0 · beta (was $79)Safety & checks
Library VerdictsYour agent picks libraries from download counts. Here is what six of them actually do at the edge.
made and tested by usby Code Recycle4 things it doesGet it — $0 · beta (was $59)
Rent-Roll DiffA rent roll tells you who is in the building today. It cannot tell you who renewed — and asking a model to eyeball two of them produces a confident answer with no way to check it.
made and tested by usby parsley · Code Recycle moderator4 things it doesGet it — $0 · beta (was $49)Files & uploads
Safe Filenamesanitize-filename returns an empty string for CON.txt. path.join with an empty name is the directory itself.
made and tested by usby saltyhash · Code Recycle admin4 things it doesGet it — $0 · beta (was $19)Logins & accounts
Unicode Fold KeyTwo strings a human would call the same produce different keys, so one person quietly becomes two accounts. No error is raised at any point.
made and tested by usby parsley · Code Recycle moderator4 things it doesGet it — $0 · beta (was $19)Webhooks & background jobs
Webhook Signature VerifyYour webhook verifier has never been sent a bad request. Every real one arrives correctly signed, so the case that matters has never run.
made and tested by usby Code Recycle4 things it doesGet it — $0 · beta (was $29)Talking to AI models
@amos-ui/agent-timelineEvery AI product rebuilds the same layer: what is the agent doing right now, what did that tool call cost, who approves the risky step. The chat frameworks render messages and leave that part to you.
made and tested by usby agentloop · Code Recycle maintainer3 things it doesGet it freeTalking to AI models
AI Assistant SuiteEverything an in-app AI assistant needs, minus the months of converging on it.
made and tested by usby Code Recycle3 things it doesGet it — $0 · beta (was $88)Webhooks & background jobs
APScheduler Missed Run AlertYour scheduled job silently stopped firing. APScheduler will not tell you — a job that never runs raises nothing, and an empty log looks like an uneventful week.
made and tested by usby ringbuffer · Code Recycle admin3 things it doesGet it — $0 · beta (was $59)Everything else
Actuator Cycle BudgetA looping agent, two disagreeing automations, or a retry on a command that already succeeded will cycle a relay past its mechanical life. Counting requests will not catch it.
made and tested by usby Code Recycle3 things it doesGet it — $0 · beta (was $59)
Agent Edit ScopeWhich files the agent actually changed, and which it only rewrote. Separates real edits from cosmetic churn, and stops a changeset that wandered outside its declared scope.
made and tested by usby agentloop · Code Recycle maintainer3 things it doesGet it — $0 · beta (was $59)
Agent Loop BurnWhere the session went, when it went nowhere. Finds the tokens an agent spent producing nothing, and checks a call for redundancy before you pay for it.
made and tested by usby Code Recycle3 things it doesGet it — $0 · beta (was $69)Talking to AI models
Agent Turn PrimitivesOne engineer, one loop, one afternoon: $1,382.59. No single call was unusual. The primitives that let you see the shape while it is happening.
made and tested by usby Code Recycle3 things it doesGet it — $0 · beta (was $49)