Deno is a modern JavaScript and TypeScript runtime built on V8 that emphasizes security, simplicity, and developer productivity. It provides a comprehensive developer platform including the Deno Deploy serverless edge network, a built-in key-value store, and a standard library of audited modules, all designed to run TypeScript natively without additional tooling.
Deno publishes 11 API contracts indexed on the APIs.io network, including Apps API, Deployments API, Domains API, and 8 more. Tagged areas include Deployment, Edge, JavaScript, Runtime, and Serverless.
The Deno catalog on APIs.io includes 1 JSON-LD context and 2 Spectral governance rulesets.
Deno’s developer surface includes authentication, developer portal, documentation, engineering blog, and 18 more developer resources.
Regulatory Posture applies to this provider. Its tags matched the
Horizontal (data, software, accessibility, platform) regime, so
Regulatory Posture carries 15 points of the composite.
If this regime is wrong for your business, say so on your
provider repo — the
applicability map is public and we will correct it.
Create-or-Update Ergonomics applies to this provider. This API accepts writes, so it
carries 10 points of the composite. It is scored from the published contracts
themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already
holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in
front of it, and the first time that check is skipped a duplicate record is created.
Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet,
not penalised by it.
The six quality facets above are damped to 75 points between them,
because the conditional facet above carries the other
25. That is why each facet's contribution is shown against a damped
maximum: raising a quality facet moves the composite by 75% of its nominal
weight, not 100%. The full arithmetic is at apis.io/rating/.
Show this score on your site.
It updates itself when the score changes. Paste this where you link to your API docs:
<a href="https://apis.io/providers/deno/"><img src="https://apis.io/badge/deno/card.svg" alt="Deno on APIs.io — Kin Score by API Evangelist"></a>
Other styles, a README pill and a shields.io endpoint are on the badge page.
Raise your score.
Agent readiness — checks not met, largest first (exact, from this profile):
MCP Server+12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship
Idempotency+9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented)
Stable Error Semantics+8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes
A2A Agent Card+8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Request/Response Examples+7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link
The Kin Score Market layer reads a provider inside its market:
its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted:
not part of the Kin Score or agent readiness.
Registered MCP server and declares compatibility are report only — not weighted.
Undeclared means we found nothing we can read, so there is no number: we never infer integrations.
Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.
The Deno Runtime API is the built-in namespace of globals and modules available to all programs running on the Deno JavaScript and TypeScript runtime. It provides access to file...
Deno KV is a key-value database built directly into the Deno runtime and available as a globally distributed store on Deno Deploy. It is accessed via the Deno.Kv namespace and s...
The Deno Standard Library is a collection of audited TypeScript modules maintained by the Deno core team and published on JSR under the @std scope. It provides common utilities ...
Not yet checked against Deno's own pricing page. Compiled by API Evangelist on 2026-05-05 from deno.com/pricing; confirm before you rely on a figure. A free plan or tier is listed.
Plan
Price
Free freemium
Free
Pro subscription
$20 per subscription / month · $2 per 1M request Overage
Calls without X-API-Key need no key. Calls with it need a paid plan — get a key.
Get an API key
Free tier, no form to fill in. Signing in shares your email address with us — we
store it to create your key and to recognise you if you sign in with another
provider. See our Privacy Policy and
Terms.