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API · /depsdev-api

deps.dev API

healthy 4,367 Subscribers

Software supply-chain and dependency intelligence as an API, powered by deps.dev — Google's Open Source Insights service. Across six package ecosystems (npm, PyPI, Maven, Cargo, Go and NuGet) it answers the questions a registry cannot: what does installing this package actually pull in, and how healthy is the project behind it. List a package's published versions and its default version; read a specific version's declared licenses, the keys of any known security advisories, useful links (source repository, homepage, issue tracker) and related projects; resolve a version's complete TRANSITIVE dependency graph — the total dependency count, the direct dependencies and every transitive node with its exact resolved version and whether it is a direct or indirect dependency; and look up a source project's OpenSSF Scorecard — the overall security score plus per-check results for Maintained, Code-Review, Branch-Protection, Dangerous-Workflow, Vulnerabilities and more — alongside its stars, forks, open issues, license and homepage. For Go modules and Maven artifacts the package name is the full module path or group:artifact (URL-encoded automatically). Ideal for dependency auditing, software-bill-of-materials (SBOM) enrichment, supply-chain risk assessment and license-compliance tooling. Data from deps.dev (Google, CC-BY).

#deps-dev #supply-chain #dependencies #openssf-scorecard #security #sbom #developer-tools
api.oanor.com/depsdev-api
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Machine-readable spec so AI agents can integrate this API.

/api/depsdev-api/openapi.json
/api/depsdev-api/llms.txt

Discovery: GET /api/index.json lists every API.

API health

healthy
Uptime
100.00%
Server probes · 24h
Avg latency
100 ms
Server probes · 24h
Subscribers
4,367
active
Total calls
15
last 7 days
status Full status page → · 40 probes/24h

Pricing

Pick a tier — billed monthly, cancel anytime.

Free

Free

  • 620 calls / month
  • 2 requests / second
  • Hard cap (429 above quota, no overage)
  • 620 calls/month
  • 2 req/sec
  • Packages, deps & scorecards
  • No credit card
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Starter

€6.50 /month

  • 23,000 calls / month
  • 6 requests / second
  • Hard cap (429 above quota, no overage)
  • 23k calls/month
  • 6 req/sec
  • Dependency-graph auditing
  • Email support
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Pro

€20.00 /month

  • 99,000 calls / month
  • 15 requests / second
  • Hard cap (429 above quota, no overage)
  • 99k calls/month
  • 15 req/sec
  • SBOM & supply-chain risk
  • Priority support
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Mega

€56.00 /month

  • 430,000 calls / month
  • 40 requests / second
  • Hard cap (429 above quota, no overage)
  • 430k calls/month
  • 40 req/sec
  • CI/CD security at scale
  • Dedicated SLA
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Subresource Integrity API

Generate Subresource Integrity (SRI) hashes for any web asset, so browsers can verify that a CDN-hosted script or stylesheet has not been tampered with. Pass a URL and the service fetches the asset and returns its sha256, sha384 and sha512 SRI hashes, the chosen integrity value (sha384 by default, or pass your preferred algorithm), the asset's size and content type, and a ready-to-paste <script> or <link> tag complete with the integrity and crossorigin attributes. A verify endpoint re-fetches the asset and tells you whether it still matches a known integrity string — catching silent CDN changes or supply-chain tampering before your users hit them. The request is made server-side; private and internal targets are refused (SSRF-guarded). Built for securing third-party scripts, supply-chain hardening, build pipelines and CSP/SRI compliance. A Subresource Integrity generator and verifier — distinct from raw cryptographic hashing of input data (hash), the HTTP security-header grader (secheaders) and the SSL/TLS certificate check (sslcheck). No upstream key, no cache.

api.oanor.com/sri-api

OSV Vulnerabilities API

The Open Source Vulnerabilities database (OSV / osv.dev) as an API — the supply-chain security check for open-source dependencies. Scan any package version (PyPI, npm, Go, crates.io, Maven, NuGet, RubyGems, Packagist, Hex and more) and instantly learn whether it is affected by known vulnerabilities, with each advisory's severity, CVSS score, CVE aliases, CWE weakness and references; list every advisory ever published for a package; and look up a single advisory (GHSA, PYSEC, GO, RUSTSEC, CVE…) in full detail, including the affected packages and version ranges. Live from Google's official OSV.dev database, which aggregates GitHub Security Advisories, PyPA, RustSec, Go and many other sources. Ideal for dependency scanning, SBOM and supply-chain tooling, CI security gates and devsecops dashboards. Open data.

api.oanor.com/osv-api

Go Modules API

The Go package ecosystem as an API. Look up any Go module by its import path for its latest version, license, source repository, total version count and known security advisories; read a module's full version history with publication dates; and get a module's declared dependencies — direct and indirect — parsed straight from its go.mod, with the required Go version. Covers the entire public Go module graph, from github.com/gin-gonic/gin, github.com/spf13/cobra and golang.org/x/text to gorm.io/gorm and k8s.io/client-go. Live from the official Go module proxy (proxy.golang.org) and Google's deps.dev. Ideal for dependency and supply-chain tooling, SBOM generation, package dashboards and Go developer portals. Modules are addressed by full import path. Open data.

api.oanor.com/gomod-api

MTA-STS API

Inspect a domain's SMTP transport-security posture — whether mail servers are required to deliver inbound mail over authenticated TLS, protecting it from downgrade and man-in-the-middle attacks. Pass a domain and the service fetches the MTA-STS policy file from mta-sts.<domain>/.well-known/mta-sts.txt (its version, mode, the permitted MX hosts and max_age), the _mta-sts DNS TXT record (its policy id) and the _smtp._tls TLS-RPT record (the rua reporting address), then reports whether MTA-STS is actually enforced and a prioritised list of issues — no policy file, no DNS record, a mode of only "testing", or a missing TLS-RPT record. A second endpoint returns just the parsed policy file. The request is made server-side and private/internal targets are refused (SSRF-guarded). Built for email-deliverability and anti-downgrade-attack audits, vendor and third-party assessment, and compliance. An MTA-STS / TLS-RPT checker — the SMTP transport-security counterpart to the email-authentication analyzer (emailsec, which covers SPF, DKIM and DMARC), and distinct from raw DNS lookup (dns). No upstream key, no cache.

api.oanor.com/mtasts-api

Frequently asked questions

Quick answers about pricing, quotas, and integration.

How do I get an API key for deps.dev API?
Sign up for free at oanor.com, generate an API key from the developer dashboard, and call deps.dev API with the x-oanor-key header. No credit card needed for the free tier.
What's the rate limit for deps.dev API?
Free tier allows 1 request per second. Paid plans scale up to 50 requests per second on the Mega tier. Hard limits return HTTP 429 above the quota — no surprise overage charges.
How much does deps.dev API cost?
deps.dev API has a free tier with 100 calls / month. Paid plans start at €6.50 / month with higher quotas and faster rate limits.
Can I cancel my subscription anytime?
Yes. Plans are billed monthly and you can cancel anytime from your billing dashboard. No long-term contracts and no cancellation fee.
Is deps.dev API GDPR-compliant?
All requests to deps.dev API go through our EU-based gateway. Your upstream API key never leaves our server and no personal data is shared with the upstream provider beyond the request you send.

Pick an endpoint from the list on the left to see its details and try it.

Code snippets

Sign up to get an API key, then call any path under your slug.

curl https://api.oanor.com/depsdev-api/SOME_PATH \
  -H "x-oanor-key: oanor_test_..."
const res = await fetch("https://api.oanor.com/depsdev-api/SOME_PATH", {
  headers: { "x-oanor-key": "oanor_test_..." }
});
const data = await res.json();
$ch = curl_init("https://api.oanor.com/depsdev-api/SOME_PATH");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, ["x-oanor-key: oanor_test_..."]);
$response = curl_exec($ch);
import requests
r = requests.get(
    "https://api.oanor.com/depsdev-api/SOME_PATH",
    headers={"x-oanor-key": "oanor_test_..."},
)
print(r.json())

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