One Simple API
· #198 most-usedTen utility superpowers. One API key. Zero setup.
One Simple API is a multi-purpose utility toolkit that gives agents instant access to PDF generation, webpage screenshots, QR code creation, currency conversion, email validation, URL expansion, and social profile lookups — all through a single authenticated endpoint. Connect it to Actionist and your agents can capture, convert, validate, and generate assets on demand inside any workflow. No browser automation, no third-party SDKs, no per-service credential juggling — just one API key that unlocks a full rack of reliable utilities the moment a workflow needs them.
Eliminates manual work. Agents capture screenshots, convert currencies, validate emails, and generate QR codes inside workflows without switching between five separate browser-based tools — eliminating the repeated interruptions that previously broke focus across every department.
What your One Simple API agent runs on autopilot
A week of scheduled jobs your Actionist agent will execute on your behalf.
One Simple API × every other app you use
End-to-end automations that span multiple apps — each one a real business outcome.
Turn inbound emails into verified contact records
When a new email arrives in Gmail from an unknown sender, your agent validates their email address for deliverability, generates a QR code for their welcome pack, and posts the enriched contact summary to Slack — then books a follow-up call on Google Calendar before the support rep has read the thread. Every new contact enters the CRM pre-verified, with onboarding assets already in motion.
Time saved for your team — every week, on autopilot
Savings
What your team gets back — two angles: what you stop doing manually, and what that's worth.
What you do manually today
What your agent runs for you
- Sales18 min / weekManual currency lookups
Reps Google exchange rates, manually recalculate deal values, and re-enter converted figures into the CRM — a 10-minute interruption per international deal.
Sales Agent0 minAgent converts deals in real timeThe Sales Agent calls One Simple API currency conversion the moment a deal is created, updating the CRM field with the converted amount before the rep opens the record.
- Marketing13 min / weekManual QR code generation
Marketers visit a third-party QR tool, generate codes one at a time, download images, and manually attach them to campaign assets — repeated for every print run.
Marketing Agent0 minAgent generates QR codes on demandThe Marketing Agent generates QR codes for every new campaign URL via One Simple API and posts the image directly to Slack and Airtable without a human touching a browser.
- Customer Support18 min / weekEmail hygiene checks
Support reps manually spot-check contact emails for typos before creating CRM records, and still miss invalid addresses that cause bounces and lost follow-up threads.
Customer Support Agent0 minAgent validates every contact emailThe Support Agent validates every inbound contact email via One Simple API before creating a CRM record, automatically quarantining undeliverable addresses to a review sheet.
- Human Resources7 min / weekCandidate email verification
HR coordinators manually check applicant email addresses before sending offer letters, occasionally bouncing critical correspondence to invalid addresses.
Human Resources Agent0 minAgent pre-validates applicant emailsThe HR Agent validates every applicant email via One Simple API when an application is logged, flagging unreachable addresses before the offer letter workflow begins.
- Finance13 min / weekInvoice PDF downloads
Finance staff manually open hosted invoice URLs, print-to-PDF each one, and upload them to shared drives — a repetitive task across dozens of vendor invoices per month.
Finance Agent0 minAgent archives invoice PDFs automaticallyThe Finance Agent generates PDFs from invoice URLs via One Simple API and uploads each one to the correct Google Drive folder and Notion record immediately on receipt.
- Operations25 min / weekVendor link verification
Operations staff manually visit vendor URLs to confirm they're live, check for redirects, and copy the destination addresses into tracking spreadsheets one by one.
Operations Agent0 minAgent audits and expands vendor linksThe Operations Agent runs every new vendor URL through One Simple API's URL expansion and uptime check, logging canonical addresses and status codes to the tracker without manual browsing.
- Legal6 min / weekTerms page PDF archiving
Legal staff manually visit vendor and partner terms pages, print them to PDF, and file them in the contract folder — a process prone to being skipped under deadline pressure.
Legal Agent0 minAgent captures terms PDFs at signingThe Legal Agent generates a timestamped PDF of every vendor terms URL via One Simple API at the moment a contract is logged, archiving it to Notion before the signing deadline.
Calculate what your team saves
Based on One Simple API's typical team usage — the visible tasks plus a few other automations the agent runs: ~2.5 hrs / person / week of admin work automated.
How to plug One Simple API into Actionist
Pick the connection method that suits your environment.
The fastest path to One Simple API. Install the MCP server in one click from the Apps tab; Actionist connects via your API token through a permissioned handshake — no environment variables to manage and no restart required.
Find One Simple API in the Apps library and click Connect. MCP is selected by default.
Navigate to onesimpleapi.com/user/api-tokens, generate a new token with the permissions you need, and paste it into the Actionist token field.
Actionist runs a read-only call to verify the handshake. You're ready.
15 actions your agent can call
Read and write operations available to your Actionist agent.
7 events your agent can react to
Events your agent watches for, and the actions it kicks off in response.
Skills that pair with One Simple API
Reusable agent skills that work well alongside this app.
Connects Actionist agents to Reddit, Steam, Spotify, GitHub, Discord, and dozens more services through a single unified integration layer.
Teaches programming through interactive lessons, code review, and debugging guidance — useful when building custom scripts that call One Simple API directly.
MCP servers that work with One Simple API
Connect Actionist to MCP servers built for or around this app.