Open data · developer-first · self-serve

Open-data APIs, done simply.

Payloda is a growing collection of simple, self-serve APIs built on open, authoritative data. Clean endpoints, flat pricing, and a free tier. No opaque black boxes. No enterprise sales calls.

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Open-data sources Transparent pricing GET · JSON · MCP-ready Free tier to start
Available now

Live APIs, built the same way

Clean GET endpoints over open, authoritative data, and every response cites where it came from. Start free, upgrade as you grow.

Carbon Footprint & Emission Factor API

2,892 emission factors from open, authoritative data, and every result carries the year and an A-C data-quality tier. Built for CSRD / SEC / carbon-accounting tools and carbon-aware apps.

Live · 17 endpoints
✓Activity → CO₂e across fuels, electricity, transport, materials & waste
✓Spend-based Scope 3 ($ + industry → CO₂e, supply-chain factors)
✓Freight & flights (ISO 14083; flights with radiative forcing)
✓Refrigerant / F-gas GWP (AR4/5/6 GWPs, blends)
✓Live grid intensity: GB, US & EU, from the real-time mix
✓Best time to run: shift loads to the cleanest, cheapest hours
GET /grid/best-window?duration=3&zone=GB
{
  "best_window": { "from": "2026-07-20T12:30Z", "avg_gco2_per_kwh": 88.7 },
  "savings_vs_average_pct": 48.7,
  "recommendation": "Run your 3h load starting 12:30 UTC for ~49% lower carbon"
}
Subscribe on Zyla Learn more → Free tier available · Basic from $25/mo

Sanctions & Watchlist Screening API

Screen any name against 18 government sanctions & export-control lists (US OFAC/BIS/State, UN, UK, EU, Canada, France & Australia) in one call. Ranked, scored matches with full provenance. Built for KYC / KYB / AML and export compliance.

Live · 18 lists
✓18 lists, one call: 53,900+ entities across 9 authorities
✓Fuzzy matching: transliterations, reordered names & typos, scored 0-100
✓Homonym disambiguation: DOB & country rank out false positives
✓Export controls: BIS Entity List, Denied Persons, ITAR debarred
✓Full provenance: every match cites list, program & snapshot date
✓Refreshed daily: stale sanctions data is a compliance risk
GET /screen?name=Yevgeny%20Prigozhin
{
  "match_count": 6, "matched": true,
  "matches": [ { "score": 100.0, "matched_on": "PRIGOZHIN, Yevgeniy Viktorovich",
    "list": "UK OFSI Consolidated", "list_snapshot": "2026-06-03" } ]
}
Subscribe on Zyla Learn more → Free tier available · flat, transparent pricing

Vulnerability Intelligence & CVE Prioritization API

Look up any CVE or software dependency and get a P1-P5 patch-priority verdict: CVSS from NVD, actively-exploited status from CISA KEV and exploit probability from FIRST EPSS, all in one call. Built for vuln management, SBOM scanning and SOC enrichment.

Live · 10 endpoints
✓Fix-first score: a 0-100 number to rank a whole backlog, plus a P1-P5 verdict
✓Actively exploited: CISA KEV, incl. known ransomware campaigns
✓Exploit probability: FIRST EPSS across 350k+ CVEs
✓Dependency scanning: OSV across PyPI, npm, Go, Maven & more
✓Batch ranking: paste up to 100 CVEs, get them sorted fix-first
✓Refreshed daily: every response cites source & snapshot date
GET /cve?id=CVE-2021-44228
{
  "cvss": 10.0, "kev": true, "epss": 0.975,
  "priority": { "tier": "P1", "label": "Patch now",
    "reason": "actively exploited in ransomware campaigns; 97%" }
}
Subscribe on Zyla Learn more → Free tier available · flat, transparent pricing
Pricing

Flat, transparent plans

Start free, upgrade as you grow. Metered per API call. No seats, no "contact sales". Billed through the Zyla marketplace.

Free
$0
100 calls / day
Every endpoint. For evaluation & hobby projects.
Basic
$25/mo
10,000 calls / mo
For prototypes & small apps.
Pro
$99/mo
100,000 calls / mo
For production workloads.
ProPlus
$299/mo
1,000,000 calls / mo
For scale & platforms.
Get started on Zyla
Why Payloda

Trustworthy data, without the enterprise tax

The incumbents gate open-data answers behind opaque pricing and "contact sales". We don't.

01 · OPEN

Built on authoritative open data

Public and government datasets, used within licence, with no relicensed black boxes or mystery numbers.

02 · FAIR

No enterprise tax

Flat, transparent pricing with a free tier. Self-serve, with no seats, no minimums and no "contact sales".

03 · SIMPLE

GET, JSON, agent-ready

Clean query-param endpoints that are easy to integrate and friendly to LLM agents & MCP.