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There's a headline pattern that feels like sharp marketing writing but quietly costs conversions. "You code. We cloud." It's clever. The parallel structure is tight. It names a clear division of labor. But it describes the service delivery model , not the developer outcome — and those are different things to someone scanning a landing page in five seconds. The audit fastapicloud.com is a managed hosting product built specifically for FastAPI developers. The hero H1 is: "You code. We cloud." On the surface this reads as clean, confident B2B positioning. In practice, it names the mechanism: You = who does the coding We cloud = who handles the infrastructure What's missing is the output. What does the developer actually walk away with? The gap (mechanism-first H1): The headline describes the service model without anchoring it in the developer outcome. The visitor has to make a three-step inference: "they handle the cloud" → "that means I don't do ops" → "so my app gets to production without a week of DevOps work." In five seconds of scrolling, most won't finish that chain. The headline earns a nod of recognition. It doesn't earn the scroll. The fix One line changes the frame completely. Before: "You code. We cloud." After: "Your FastAPI app is live in production — zero config rabbit holes, zero deploy-day surprises." The rewrite keeps the same promise — they handle the infrastructure — but anchors it in the developer's world. The outcome (app in production) is first. The pain points ("config rabbit holes," "deploy-day surprises") are the exact things a FastAPI developer has already lived through. "Zero config rabbit holes" names the experience of spinning up a production server for the first time. "Zero deploy-day surprises" names the dread: the Sunday night broken deploy that wasn't caught in staging. Any backend developer who reads that line knows exactly what it's describing. The mechanism (managed cloud, they handle ops) is still implied. But the headline earns the

I used Postman for years. It was the first thing I installed on every new laptop, the default answer...

Sometimes an email shouldn't go out the instant your code runs. A human needs to review it first, or the user wants to compose now and hit send later, or an AI agent proposes a reply that a person approves before it ships. The mechanism for all three is the same: a draft. Build that against providers directly and you're juggling Gmail's draft resource, Microsoft Graph's, and an IMAP APPEND to the Drafts folder, each with its own shape and quirks. The Nylas Email API collapses that into one draft resource. You create a draft on the user's account, it lands in their real Drafts folder, and you send it later with a single request, the same way across Gmail, Microsoft 365, Yahoo, iCloud, IMAP, and Exchange. This post walks the full draft lifecycle from two angles: the HTTP API for your backend, and the nylas CLI for the terminal. I work on the CLI, so the terminal commands below are the ones I reach for. One draft resource across every provider A draft in the Nylas model is a real object in the user's mailbox, not a staging area on the side. When you create one, it saves to the user's own Drafts folder on their provider, so it shows up in their normal mail client exactly like a draft they started themselves. That's the property that makes drafts useful for review workflows: a person can open the mailbox and see the pending message before it sends. Because drafts are real provider objects, edits flow both ways. A draft you create through the API appears in the user's mail client within the provider's sync window, and a change the user makes there alters the same draft you'd fetch back through the API. The operations split across two paths: create and list live on /v3/grants/{grant_id}/drafts , while fetch, update, send, and delete act on a specific draft at /v3/grants/{grant_id}/drafts/{draft_id} . They behave the same across all six providers, so you write the integration once. Create a draft Creating a draft is a POST /v3/grants/{grant_id}/drafts with the same message

An AI agent that can email but can't hold a calendar slot is only half useful. The moment a conversation turns into "let's meet Thursday at 2," the agent needs a real calendar — one that sends invitations people accept in Google Calendar or Outlook, receives invites at its own address, and RSVPs back so the organizer sees a real response next to everyone else's. Bolting a scheduling library onto a shared mailbox doesn't get you there; the agent needs a calendar identity of its own. An Agent Account ships with exactly that. Every account gets a primary calendar that hosts events, accepts invitations over standard iCalendar, and RSVPs with yes, no, or maybe. To a participant, the agent is just another attendee on the invite. This post walks through using that calendar from two angles: the HTTP API for your backend, and the Nylas CLI for the terminal. I work on the CLI, so the terminal commands below are the ones I reach for. The calendar an Agent Account comes with When Nylas provisions an Agent Account, it creates a primary calendar that belongs to the account. You reach it through the same Calendars and Events endpoints at /v3/grants/{grant_id}/... that any other grant uses, so calendar code you've written for a connected Google or Microsoft account works here unchanged. Each account gets: A primary calendar , provisioned automatically. It can't be deleted while other calendars exist on the account. Additional calendars , up to your plan's cap, for separating concerns — a sales-calls calendar and an internal one on the same agent. Free/busy queries , so the agent can check its own availability before proposing a time. Event webhooks — event.created , event.updated , and event.deleted fire on every change, whether it came from the agent or from someone responding to an invitation. List the calendars from the terminal with nylas calendar list , or over the API with GET /v3/grants/{grant_id}/calendars . Both return the primary calendar plus any you've added. List what'

You give your AI agent a real mailbox, it sends its first batch of email, and half of it lands in spam. The agent did nothing wrong. The domain did — it's new, it has no sending history, and mailbox providers treat an unknown domain that suddenly sends volume the same way they treat a spammer. Deliverability is the work of proving the mail is really yours, sending at a pace providers trust, and watching the signals that say whether recipients want it. An Agent Account sends from a domain you own, so its inbox placement is yours to manage like any other mail from your company. This post is a practical playbook for getting and keeping an agent in the inbox, from two angles: the HTTP API for your backend, and the Nylas CLI for the terminal. I work on the CLI, so the terminal commands below are the ones I reach for when I'm wiring up monitoring. The deliverability checklist Five things decide whether an Agent Account reaches the inbox, and you can act on all of them before sending at volume. Work them in order — authentication first, because nothing else matters if recipient servers can't confirm the mail is yours, then pace and monitoring once mail is flowing. Authenticate the domain with DKIM and SPF as part of domain verification. Set up DMARC so providers know how to treat mail that fails authentication. Warm up a new domain before sending at volume, over roughly four weeks. Monitor bounces and complaints through the deliverability webhooks. Stay under the bounce and complaint thresholds that pause sending. The rest of this post covers each one with the commands and request bodies to wire it up. Authenticate with DKIM and SPF Authentication is the foundation, and for an Agent Account it rides on two records you already publish during domain setup. DKIM adds a cryptographic signature proving the message wasn't altered and really came from your domain; SPF authorizes the sending infrastructure to send on your behalf. Both are verified before a custom domain can host a

An AI agent with its own mailbox reacts to whatever lands in it. That's the point, until a spam blast, a mailer-daemon loop, or an auto-reply triggers the agent into answering noise. The same goes the other way: an agent composing mail on its own can address the wrong person, leak to a test domain that slipped into production, or email a competitor because nobody told it not to. A human would catch these. An agent needs guardrails encoded somewhere it can't skip. Agent Accounts ship three admin resources for exactly this: Policies bundle limits and spam settings, Rules match mail on the way in or out and run actions like block or assign_to_folder , and Lists are reusable collections of domains or addresses that rules reference. This post covers all three from two angles: the HTTP API for your backend, and the Nylas CLI for inspecting and managing policies and rules from the terminal. Lists, workspaces, and the rule-evaluations audit log are API-only for now. I work on the CLI, so the terminal commands below are the ones I reach for. How Policies, Rules, and Lists fit together The three resources form a chain, and a workspace ties it to your accounts. A List holds values like domains or addresses. A Rule references lists through the in_list operator and describes conditions and actions. A Policy bundles limits and spam settings. A workspace carries one policy_id plus an array of rule_ids , and every Agent Account in that workspace inherits both. What matters here: you don't attach a policy or rule to an individual grant. You set policy_id and rule_ids on a workspace , and they apply to every account in it. Each application has a default workspace that holds any account you haven't placed elsewhere, so configuring that one workspace covers all your unassigned accounts at once. All three resources are application-scoped — they carry no grant ID in the path, and your API key identifies the application. Resource What it owns How it's referenced List A typed collection of

An AI agent sends an email, a reply lands three hours later, and the agent has to answer two questions before it can do anything useful: which conversation is this, and what did I last say? Get the first one wrong and the agent's reply shows up in the recipient's inbox as a brand-new message instead of slotting into the existing thread. To the person on the other end, that looks broken — like the agent forgot the conversation it started. Threading is the part of agent email that's easy to get almost right and quietly wrong. The fix lives in a few email headers most developers never touch, and in the Threads API that groups messages into conversations for you. This post walks through both, from two angles: the HTTP API for your backend, and the Nylas CLI for the terminal. I work on the CLI, so the terminal commands below are the ones I reach for when I'm testing a reply loop. The three headers that make threading work Threading runs on three email headers, not on subject lines. Every message carries a Message-ID — a globally unique identifier the sending server stamps on it. When someone replies, their mail client adds In-Reply-To (the Message-ID of the message being answered) and References (the full chain of Message-ID values, oldest to newest). Those two headers are how every mail client decides which messages belong together. Here's what the chain looks like across one exchange. The agent's first message gets a Message-ID ; the reply points back at it; the agent's follow-up references both: # The agent's outbound message Message-ID : <abc123@agents.yourcompany.com> Subject : Following up on your demo request # The recipient's reply Message-ID: <def456@gmail.com> In-Reply-To: <abc123@agents.yourcompany.com> References: <abc123@agents.yourcompany.com> Subject: Re: Following up on your demo request # The agent's follow-up Message-ID: <ghi789@agents.yourcompany.com> In-Reply-To: <def456@gmail.com> References: <abc123@agents.yourcompany.com> <def456@gmail.com> The Ref

Most "AI agent that emails for you" demos point a language model at a human's Gmail inbox over OAuth. That works until the agent needs its own identity: an address people reply to, a calendar that accepts invites, a mailbox your application owns end to end. Borrowing a human's inbox means inheriting their OAuth scopes, their rate limits, and the awkwardness of an agent sending mail as a person who didn't write it. A Nylas Agent Account flips that around. It's a real name@yourcompany.com mailbox that you create and control entirely through the API — it sends, receives, hosts calendar events, and RSVPs, and it's indistinguishable from a human-operated account to anyone on the other end. Under the hood it's just a grant , so the grant_id you get back works with the same grant-scoped endpoints — Messages, Threads, Folders, Drafts, Attachments, Contacts, Calendars, and Events — you've already used for connected accounts, plus the standard webhook triggers. This post is a working tour of provisioning one, from two angles: the HTTP API for your backend, and the Nylas CLI for the terminal and quick experiments. I work on the CLI, so the terminal commands below are the exact ones I reach for. Why an Agent Account beats borrowing a human inbox An Agent Account is a first-class sender, not a delegated one. When the agent owns support@yourcompany.com , people reply to it directly, calendars invite it as a normal participant, and its mail authenticates as coming from you. A few concrete differences from pointing an agent at someone's existing mailbox: No OAuth flow to babysit. Creation needs only an email address on a domain you've registered — there's no refresh token to store or rotate, and the grant rarely expires because there's no OAuth token to refresh. Its own reputation. The account sends on your domain, and a new domain establishes its sender reputation over roughly four weeks of gradual sending. That reputation is yours to protect, not a shared corporate inbox's. Per-t

A consumer nav app tells the driver where to turn. It will not tell the dispatcher where the 11-hour driving clock runs out — and, more importantly, whether there is legal parking when it does. That second question is the one that strands a truck at 11 PM on the shoulder of an off-ramp with every nearby lot already full. Road511’s routing endpoint now answers it. Send the driver’s Hours-of-Service clock along with the route, and the response carries an hos[] array: every point on the corridor where the driver must take a break or stop driving under the selected regime, the projected time they reach it, the legal deadline, and — the part that matters operationally — the truck parking and rest areas actually reachable before that deadline. How It Works It rides the same call as everything else routing does: POST /api/v1/routing/route . You already send an origin, a destination, and a truck profile. To get the HOS projection, add an hos block inside the truck object describing the driver’s clock at departure. curl -X POST "https://api.road511.com/api/v1/routing/route" \ -H "X-API-Key: your_key" \ -H "Content-Type: application/json" \ -d '{ "origin": { "lat": 41.8781, "lng": -87.6298 }, "destination": { "lat": 39.7392, "lng": -104.9903 }, "departure_time": "2026-06-08T06:00:00Z", "truck": { "profile": "tractor", "weight_t": 36.0, "height_m": 4.2, "axles": 5, "hos": { "ruleset": "us", "drive_remaining_s": 39600, "duty_remaining_s": 50400, "since_break_s": 0 } }, "enrichment": { "include_features": ["truck_parking", "rest_areas"] } }' That’s a Chicago→Denver run for a fresh driver on US rules: 11 hours of driving left ( 39600 s), a 14-hour duty window ( 50400 s), and zero driving time since the last break. Every counter is “seconds remaining” against the named ruleset’s limit. The HOS Clock The hos object is the driver’s state, not a fixed policy. Store only the ruleset on a reusable truck profile — the per-trip counters are supplied inline on each request and merge on to

We just shipped the Forgelab PDF API — a fast, affordable REST API for developers who need to handle PDF files without the hassle. What it does: Merge multiple PDFs into one Split PDFs by page ranges Compress PDFs to reduce file size Convert PDFs to images (PNG/JPEG) Pricing: Starts at $5/month for 100 calls/month. No hidden fees. Quick start: curl -X POST https://www.forgelab.africa/api/pdf/merge \ -H "X-API-Key: your_key" \ -F "files=@doc1.pdf" -F "files=@doc2.pdf" Sign up at forgelab.africa

Every World Cup there's a moment. Some player nobody outside their domestic league had heard of scores an absolute screamer in a knockout match, and by the time they've finished celebrating, their follower count is climbing like a rocket. I always found that fascinating, but I could never see it happening. By the time the "X gained 3M followers!" tweets show up, the surge is already over. So this tournament I built a little tracker that snapshots player follower counts on a schedule and shows me the growth curve in near real-time. Here's how it works. The problem with doing this "properly" My first instinct was the official APIs. That died fast. Instagram's Graph API won't give you follower counts for accounts you don't own. TikTok's Research API is academics-only and takes weeks of applications. X's API now starts at $100/month and climbs steeply from there. I just wanted public follower counts — numbers anyone can see by opening the app. I didn't want a data partnership and a legal review. I ended up using the SociaVault API , which wraps public profile data from each platform behind one key. One request, one credit, JSON back. The shared client Everything runs through one tiny helper: // Node 18+ has fetch built in const API_KEY = process . env . SOCIAVAULT_API_KEY ; const BASE = " https://api.sociavault.com " ; async function sv ( path , params ) { const url = new URL ( BASE + path ); Object . entries ( params ). forEach (([ k , v ]) => url . searchParams . set ( k , v )); const res = await fetch ( url , { headers : { " X-API-Key " : API_KEY } }); if ( ! res . ok ) throw new Error ( ` ${ res . status } ${ await res . text ()} ` ); return res . json (); } Grabbing follower counts across platforms Each platform nests the count slightly differently, so I use fallback chains to stay defensive: async function instagramFollowers ( username ) { const data = await sv ( " /v1/scrape/instagram/profile " , { username }); const p = data . data ?. user ?? data . data ?? data

Origin: Halfway through a chat, where is that meme? Every heavy chat user has a bunch of memes saved on their phone and computer, but when they actually need one—halfway through a conversation, wanting to send a "Thanks, let's keep in touch" or "I'm just bad"—they can never find it. The filename is IMG_4821.jpg , albums are not categorized, and searching is impossible. I first came across a great open-source project ShiQu1218/MemeTalk , which uses Python + Streamlit + SQLite to build a local meme semantic search system. It scans your local meme folder, creates an index using OCR and vector embeddings, and then performs multi-way retrieval. It's fully functional but research-oriented and requires running Streamlit in a browser. What I wanted was something closer to an "everyday handy tool": A native Mac App, a search box, where I type what I'm looking for, relevant memes pop up, and a single click copies it directly to the clipboard. Thus MemeFinder was born. This article documents its development process from scratch to "menu bar resident + global hotkey

TL;DR — Harness engineering is one thing: getting reliable judgment out of a reasoner you didn't train — given an instruction, bounded by a spec that can override that instruction, and verified before the result ships. It is not "the wrapper around the model." It's a property of code, not a place in your stack, and it lives on both sides of every tool call. The generic scaffolding — loops, dispatch, memory — melts into the model a little more every quarter. What survives is the part that stays external to the model: the specification of what the agent may do, and the verification that it did. That's the discipline. The rest is plumbing. I've written before that Agent = Model × Harness , and that the harness is the half you actually engineer. I still believe the formula. But stop there and it oversells two things — so this is me correcting my own framing, precisely, with code. The two things the formula gets wrong The × oversells separability. Multiplication implies the factors are independent. They aren't. A better model doesn't leave your harness untouched — it dissolves parts of it. Chain-of-thought prompting became reasoning models. ReAct-style tool loops became native tool use. Half your RAG plumbing is being quietly absorbed by longer context and better-trained retrieval. Every model generation collapses a layer of harness the previous one needed. "Harness absorbs software engineering" oversells the annexation. It doesn't absorb it. It partly consumes it — pulls in the slice that encodes the agent's behavior — while the deterministic spine (payments, ledgers, auth) and the dumb tools stay exactly what they were. Relocation with an annexation at the seam. Not a takeover. Both corrections point at the same uncomfortable question: if the model eats the scaffold every quarter, isn't the harness the melting part — the thing you'd be foolish to bet a career on? What melts, and what doesn't Here's the resolution, and it's the whole point. The harness mechanism melts.

Contacts are messier than they look. A user's real address book is spread across the people they've saved by hand, the people they've emailed often enough that the provider auto-collected them, and the colleagues in their company directory. Google exposes these through the People API; Microsoft through Graph; both model the data differently and split it across sources you have to query separately. The Nylas Contacts API unifies all of that behind one schema and one grant_id . You read saved contacts, auto-collected contacts, and directory contacts through the same endpoint, create and update entries that sync back to the provider, and organize them into groups. This post walks the contact surface from the HTTP API and the Nylas CLI , which mirrors every operation for terminal use. I work on the CLI, so the terminal commands below are the ones I run when I'm exploring an address book. The contact model and its three sources A contact in Nylas carries the fields you'd expect — given_name , surname , emails , phone_numbers , company_name , job_title , notes — plus richer ones like im_addresses , physical_addresses , and web_pages . The schema is the same across providers, so a Google contact and a Microsoft contact deserialize into one struct. The detail that trips people up is source . Every contact has one of three sources, and they mean very different things: address_book — contacts the user saved deliberately. This is the real address book. inbox — contacts the provider auto-collected because the user emailed them. These were never explicitly saved. domain — contacts from the organization's directory (coworkers). Knowing the source matters because "all contacts" usually isn't what you want. If you're building a contact picker, the inbox source can flood it with one-off recipients the user doesn't think of as contacts. Filter by source deliberately. See the Contacts API overview for the full data model. Before you begin You need a Nylas API key and a connected accou

Meeting notes are the feature everyone wants and nobody wants to build. The hard part isn't the summary — an LLM handles that. The hard part is getting into the meeting: a bot that joins Zoom, Google Meet, and Microsoft Teams, survives each platform's waiting room and admission flow, records cleanly, and produces a transcript you can feed downstream. Each provider has its own join mechanics, and none of them ships a tidy "record this meeting" API. The Nylas Notetaker API is that bot as a service. You point it at a meeting link, it joins on schedule, records, and generates a transcript, and you fetch the recording and transcript through one endpoint. This post walks the Notetaker surface from the HTTP API and the Nylas CLI , which mirrors the whole lifecycle for terminal use and quick testing. I work on the CLI, so the terminal commands below are exactly what I run when I'm testing a notetaker against a live meeting. Two ways to run a notetaker: grant-scoped or standalone Before any code, there's one architectural choice worth understanding, because it changes the endpoint you call. A grant-scoped notetaker is tied to a connected account and lives under /v3/grants/{grant_id}/notetakers . Use it when the bot acts on behalf of a specific user — it can read that user's calendar and join their meetings as them. A standalone notetaker has no grant at all and lives under /v3/notetakers . You hand it a raw meeting link and it joins, no connected account required. This is the one to reach for when you just have a URL and want a recording — a public webinar, a meeting on an account you haven't connected, or a system that deals in links rather than users. Same request body, same lifecycle, same media output; the only difference is whether there's a grant_id in the path. See the Notetaker overview for how both models fit together. Before you begin You need a Nylas API key. If you're using a grant-scoped notetaker you also need a connected account; for standalone, the API key al

If your integration polls Nylas every minute to check for new email, you're doing too much work and still getting stale data. Polling is a tax: you burn rate limit on requests that mostly return nothing, and a message that arrives at 12:00:05 doesn't reach your app until the next poll. Webhooks flip that around. Nylas pushes a notification to your endpoint the moment something happens — a message arrives, an event changes, a contact is created — and your app reacts in real time. This post walks the webhook surface from both sides: the HTTP API that registers and manages webhooks, and the Nylas CLI , which has genuinely useful tooling for the part everyone gets stuck on — verifying signatures and testing webhooks against local code. I work on the CLI, so the terminal commands below are the ones I run when I'm wiring up a webhook receiver. Triggers and destinations A webhook has two halves: the trigger types it listens for and the destination URL it pushes to. Trigger types are dotted event names like message.created , event.updated , and contact.created , grouped into categories — grant, message, thread, event, contact, calendar, folder, and notetaker. You subscribe one destination to as many triggers as you want. The CLI lists every available trigger so you don't have to guess the names: # All trigger types nylas webhook triggers # Only message-related triggers nylas webhook triggers --category message Webhooks are application-scoped, not grant-scoped: one webhook registered on your application receives notifications for every connected account, identified by the grant_id in each payload. See the notifications overview for the full event model. Before you begin You need a Nylas API key — webhook management is admin-level, so it uses the application's API key rather than a grant. You also need an HTTPS endpoint reachable from the public internet to receive the notifications. The CLI gets the key set up: nylas init # create an account, generate an API key For local de

Scheduling features look simple until you build them. Google Calendar speaks its own REST API with events.insert ; Microsoft 365 wants Graph and POST /me/calendar/events ; Apple and a long tail of providers expect CalDAV. The moment your app needs to read a user's events, drop a meeting on their calendar, or check whether three people are free at 2pm, you're staring down three integrations that disagree on field names, time formats, and recurrence rules. The Nylas Calendar API gives you one interface over all of them. Connect a user's account once, get a grant_id , and read calendars, manage events, send RSVPs, and compute free/busy with the same request shape whether the backing provider is Google or Microsoft. This post walks the calendar surface from both sides: the HTTP API your backend calls, and the Nylas CLI for testing the same operations in a terminal. I work on the CLI, so the terminal snippets below are the commands I actually run when I'm poking at a calendar. Calendars, events, and the calendar_id A connected account has one or more calendars , and every event belongs to exactly one of them. Most operations take a calendar_id , and the special value primary resolves to the account's default calendar — so you don't need to look up an ID to act on the main calendar. One exception: iCloud doesn't support primary , so for iCloud accounts you pass a real calendar ID from nylas calendar list . An event carries a title , a when object holding its start and end times, a list of participants , an optional location , and flags like busy . That schema is identical across providers, which is the whole point: you read a Google event and a Microsoft event into the same struct. See the Calendar API overview for how calendars, events, and availability fit together. Before you begin You need a Nylas API key and a connected account with calendar scopes. The CLI gets you there in two commands: nylas init # create an account, generate an API key nylas auth login # connect

Most "AI email" demos point a model at a human's inbox over OAuth. That's fine until you want the agent to be a participant — to have its own address that people reply to, that calendars invite, and that builds its own sender reputation. Pointing at someone's personal inbox doesn't give you that. Nylas Agent Accounts take the other approach: a real name@yourdomain.com mailbox and calendar that the agent owns end to end. It sends, receives, hosts events, and RSVPs — and to anyone on the other side it's indistinguishable from a human-operated account. It went GA in June 2026. The part I like as an SRE: it's not a new API surface. An Agent Account is just another Nylas grant . It gets a grant_id that works with every endpoint you already use — Messages, Drafts, Threads, Folders, Attachments, Calendars, Events, Webhooks. Nothing new to learn on the data plane. This walkthrough provisions one two ways (CLI and raw API), then sends, receives, RSVPs, and adds guardrails. What you get When you create an Agent Account, Nylas provisions a real mailbox on a domain you've registered (or a Nylas *.nylas.email trial domain). Each account comes with: An email address that sends and receives like any other mailbox Six system folders ( inbox , sent , drafts , trash , junk , archive ), plus any custom ones you create A primary calendar that hosts events and RSVPs over standard iCalendar/ICS A grant_id for all the existing Nylas endpoints Before you begin You need two things: A Nylas API key. The fastest path is the CLI — nylas init creates an account and generates a key in one command. A domain. Either a Nylas-provided *.nylas.email trial subdomain (good for testing in minutes) or your own custom domain with MX + TXT records. Register it under Organization Settings → Domains. Why your own domain? It's what makes the agent a real first-class sender instead of a shared relay address — people reply to it, calendars invite it, and its mail authenticates as coming from you. A new domain b

I build algorithmic trading bots as a side project. Nothing fancy — just small strategies that trade US equity options automatically. The problem I kept running into wasn't the strategy logic. It was the data. Every time I wanted to pull real-time options chains, Greeks, or IV, I had two options: Pay $99+/mo to a data provider Scrape something I probably shouldn't be scraping Neither felt right for a hobbyist project. So I built Market-Options — a simple REST API for US equity options data at $20/mo. What It Does It's a plain REST API. No SDK, no special client library — just HTTP requests and JSON responses. It covers four endpoints: chain — full options chain for a given underlying contract — data for a single contract contracts — batch lookup across multiple contracts contract-overview — Greeks, IV, expiration details Coverage is the top 100 US equity underlyings, which accounts for roughly 95% of actual US options volume. If you're building a bot that trades SPY, QQQ, AAPL, TSLA, or anything in that tier — it's covered. Why Only 100 Underlyings? Because that's what most people actually trade. When I looked at my own bots, and at what most retail algo traders focus on, the top 100 covers everything practical. Exotic underlyings with low volume are also harder to get real data on reliably — so rather than promise coverage I can't deliver, I focused on doing the core well. A Simple Example curl "https://api.market-option.com/chain?symbol=SPY&expiration=2025-01-17" \ -H "Authorization: Bearer YOUR_API_KEY" Response is clean JSON: { "symbol" : "SPY" , "expiration" : "2025-01-17" , "options" : [ { "strike" : 480 , "type" : "call" , "bid" : 3.45 , "ask" : 3.50 , "iv" : 0.182 , "delta" : 0.42 , "gamma" : 0.031 , "theta" : -0.18 , "vega" : 0.29 } ] } No parsing headaches, no weird date formats. Pricing Free tier : 1,000 credits/day — enough to test and build Pro : $20/mo, unlimited within fair use Trial : New accounts get 7 days of Pro, no credit card required Who It's F

Python provides socket.AF_UNIX , asyncio.open_unix_connection() , and asyncio.start_unix_server() for working with Unix Domain Sockets on Unix-like operating systems. On Windows, however, support for Unix Domain Sockets tends to depend on the Python version and runtime environment. In particular, differences become apparent when trying to use the higher-level asyncio APIs in the same way as on Unix. To address this, I created a compatibility layer that hides the differences between Unix and Windows and allows AF_UNIX sockets to be used through a largely identical API. This article covers two types of APIs: An asyncio -based AF_UNIX compatibility API A synchronous socket -based AF_UNIX compatibility API Goal The objective is straightforward. On Unix, use the standard library APIs as-is. On Windows, fill in the missing functionality so that application code can remain as unified as possible. For example, on Unix you can write: reader , writer = await asyncio . open_unix_connection ( path ) And on the server side: server = await asyncio . start_unix_server ( handle_client , path ) The goal is to preserve this style of programming on Windows as much as possible. What Was Built The compatibility layer consists of two major components. 1. Asyncio Version This is the asynchronous implementation designed to match the asyncio Unix Domain Socket APIs. The main APIs are: await open_unix_connection ( path , * , limit = ...) await start_unix_server ( callback , path , * , limit = ..., backlog = ...) await create_unix_connection ( protocol_factory , path , ...) await create_unix_server ( protocol_factory , path , ...) install () On Unix-like systems, these simply delegate to the standard asyncio implementation. On Windows, they use Winsock AF_UNIX sockets and combine WSAEventSelect with event-loop handle waiting to implement asynchronous operations. 2. Synchronous Socket Version This version provides a traditional blocking-socket-style API without using asyncio . The main APIs ar