Keycard

Keycard provides runtime authentication and authorization for software agents, giving each agent its own identity, scoped access tokens, and policy‑based control over resources. The platform integrates with existing identity providers and supports policy‑as‑code written in Cedar, enabling enterprises to manage agent permissions dynamically without long‑lived credentials.

Keycard is listed with 2 APIs on the APIs.io network. Tagged areas include Authentication, Authorization, Identity, Agent Security, and Policy as Code.

The Keycard catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.

Keycard’s developer surface includes CLI, authentication, pricing, engineering blog, getting-started guide, and 17 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

40.3/100 developing Agent 21/100 agent aware Full breakdown ↓
scored 2026-10-31 · rubric v0.25.0 · Show this score on your site →

2 APIs

Authentication Authorization Identity Agent Security Policy as CodeRuntime Access

Kin Score

Kin Score How this is scored →
scored 2026-10-31 · rubric v0.25.0

Composite quality — 40.3/100 · developing

Contract Quality 5.1 / 21

Developer Ergonomics 7.3 / 17

Access Clarity 10.3 / 17

Operational Transparency 1.7 / 11

Contract Governance 3.6 / 10

Discoverability 4.9 / 9

Regulatory Posture 3.8 / 15

Agent readiness — 21/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 5 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 5 / 5

Distinct Operations 0 / 3

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 could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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<a href="https://apis.io/providers/keycard/"><img src="https://apis.io/badge/keycard/card.svg" alt="Keycard on APIs.io — Kin Score by API Evangelist"></a>

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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
Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author
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)
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes
Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented)

10 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Contract Quality scores 24.0 — up to +19.0 composite points
Developer Ergonomics scores 42.9 — up to +11.4 composite points
Operational Transparency scores 15.8 — up to +10.9 composite points

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from the provider profile at artifacts.apis.io/keycard/apis.yml: open an issue on github.com/api-evangelist/keycard to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 2

Individual APIs this provider publishes, each with its own machine-readable definition.

Keycard API

Keycard provides a platform for secure identity and access management.

Keycard API

Keycard API as documented publicly: 15 operations. Contract generated from the documentation by API Evangelist (2026-10-24); not the provider's own document.

Pricing Plans 1

Published pricing tiers and plan structures.

Keycard Plans Pricing

3 plans

PLANS

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Keycard Context

7 classes · 9 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Keycard API Rules

11 rules · 9 errors 1 warnings 1 info

SPECTRAL

JSON Schema 6

Standalone JSON Schema definitions for this provider's data models.

GetV1Response

2 properties

JSON SCHEMA

PostA2AJsonrpcRequest

4 properties

JSON SCHEMA

PostOauthTokenResponse

2 properties

JSON SCHEMA

PostV1MessagesRequest

3 properties

JSON SCHEMA

PostV1ResponsesRequest

2 properties

JSON SCHEMA

PostV1ResponsesResponse

2 properties

JSON SCHEMA

Security Posture 2

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Keycard Authentication

2 schemes

SECURITY

Keycard Domain Security

TLSv1.3 · HSTS

SECURITY

Resources

Get Started 2

Portal, sign-up, and the first successful call

GettingStarted

GettingStarted

DeveloperPortal

DeveloperPortal

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

WellKnown

WellKnown

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

Spectral

JSONLD

Vocabulary

DataModel

Conformance

Build 2

SDKs, sample code, and the tooling you integrate with

CLI

CLI

GitHubOrganization

GitHubOrganization

Access & Security 4

Authentication, authorization, and security posture

Authentication

SecurityTxt

TrustCenter

DomainSecurity

Commercial 3

Pricing, plans, and the legal terms of use

Plans

Plans

PrivacyPolicy

PrivacyPolicy

Pricing

Pricing

Company 2

The organization behind the API

Blog

Blog

Website

Website

Other 2

Properties that don't map to a standard resource type

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: keycard
name: Keycard
image: https://www.keycard.ai/img/og/og-home.png
description: Keycard provides runtime authentication and authorization for software agents, giving each agent its own identity,
  scoped access tokens, and policy‑based control over resources. The platform integrates with existing identity providers
  and supports policy‑as‑code written in Cedar, enabling enterprises to manage agent permissions dynamically without long‑lived
  credentials.
url: https://raw.githubusercontent.com/api-evangelist/keycard/refs/heads/main/apis.yml
x-type: company
x-source: harvest:vc-portfolio
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-24 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-10-24'
modified: '2026-10-24'
tags:
- Authentication
- Authorization
- Identity
- Agent Security
- Policy as Code
- Runtime Access
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Plans
  url: plans/keycard-plans-pricing.yml
- type: Spectral
  url: rules/keycard-rules.yml
- type: JSONLD
  url: json-ld/keycard-context.jsonld
- type: Vocabulary
  url: vocabulary/keycard-vocabulary.yml
- type: DataModel
  url: data-model/keycard-data-model.yml
- type: CLI
  url: cli/keycard-cli.yml
- type: Authentication
  url: authentication/keycard-authentication.yml
- type: Conformance
  url: conformance/keycard-conformance.yml
- type: LLMsTxt
  url: llms/keycard-llms.txt
- type: SecurityTxt
  url: well-known/keycard-www-security.txt
- type: WellKnown
  url: well-known/keycard-well-known.yml
- type: Hosts
  url: hosts/keycard-hosts.yml
- type: Vendors
  url: vendors/keycard-vendors.yml
- type: TrustCenter
  url: https://trust.keycard.ai/
- type: PrivacyPolicy
  url: https://www.keycard.ai/privacy/
- type: Pricing
  url: https://www.keycard.ai/pricing/
- type: GitHubOrganization
  url: https://github.com/keycardai
- type: Blog
  url: https://www.keycard.ai/blog/
- type: GettingStarted
  url: https://docs.keycard.ai/guides/quickstart
- type: DeveloperPortal
  url: https://docs.keycard.ai/
- type: DomainSecurity
  url: security/keycard-domain-security.yml
- type: Website
  url: https://keycard.sh
apis:
- name: Keycard API
  description: Keycard provides a platform for secure identity and access management.
  humanURL: https://www.keycard.ai/docs/
  aid: keycard:keycard-api-2
- aid: keycard:keycard-api
  name: Keycard API
  description: 'Keycard API as documented publicly: 15 operations. Contract generated from the documentation by API Evangelist
    (2026-10-24); not

    the provider''s own document.'
  humanURL: https://docs.keycard.ai/guides/mcp-server.md
  baseURL: https://api.anthropic.com
  properties:
  - type: OpenAPI
    url: openapi/_ae-authored/keycard-openapi-generated.yml
    x-provenance: generated
  - type: JSONSchema
    url: json-schema/keycard-post-a2-ajsonrpc-request-schema.json
  - type: JSONSchema
    url: json-schema/keycard-post-v1-messages-request-schema.json
  - type: JSONSchema
    url: json-schema/keycard-get-v1-response-schema.json
  - type: JSONSchema
    url: json-schema/keycard-post-oauth-token-response-schema.json
  - type: JSONSchema
    url: json-schema/keycard-post-v1-responses-request-schema.json
  - type: JSONSchema
    url: json-schema/keycard-post-v1-responses-response-schema.json
x-backed-by:
- boldstart-ventures
- essence-vc
x-coverage:
  state: unreadable
  reason: no-machine-readable-spec
  detail: Documentation at https://docs.keycard.ai is HTML without a machine‑readable OpenAPI/GraphQL/AsyncAPI spec.
  evidence:
  - url: https://docs.keycard.ai
    status: 200
  checked: '2026-10-24'
x-enrichment:
  date: '2026-10-24'
  status: enriched
  artifacts_added: 25
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

Keycard API — frequently asked questions

Does Keycard have an API?

Yes. APIs.io lists 2 APIs from Keycard, including Keycard API and Keycard API.

Is there an OpenAPI specification for the Keycard API?

Yes. APIs.io indexes 2 OpenAPI specifications for Keycard, each linked for download from this page.

How do I authenticate with the Keycard API?

Keycard uses bearer-token authentication (2 schemes). The details are profiled on APIs.io as Keycard Authentication.

How much does the Keycard API cost?

APIs.io lists 3 pricing plans for Keycard, with each plan's price, limits and inclusions under Pricing Plans on this page.

Is the Keycard API ready for AI agents?

Keycard has a Kin Score of 40.3 out of 100 (developing) and an Agent Readiness score of 21.1 (agent-aware), scored by API Evangelist on 2026-10-31.

Work with this as data

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MCP server

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get_provider_artifactsEvery artifact this provider publishes, grouped by type.
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get_provider_toolsEvery MCP tool they ship, with the operation each wraps.
get_provider_evidenceHow each part of their score was established. Free — the basis for a claim should not sit behind it.
get_provider_ratingPRO — composite, band, trend and facet scores.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

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Every operation they expose

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How their score was established

curl "https://apis.io/api/v1/providers/keycard/evidence"

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