Unkey API

Open-source API key management platform providing key creation, verification, rate limiting, revocation, and analytics with globally distributed sub-50ms verification latency.

Evaluated Mar 07, 2026 (0d ago) vcurrent
Homepage ↗ Repo ↗ Security api-keys rate-limiting key-management open-source developer-tools revocation analytics
⚙ Agent Friendliness
86
/ 100
Can an agent use this?
🔒 Security
89
/ 100
Is it safe for agents?
⚡ Reliability
84
/ 100
Does it work consistently?

Score Breakdown

⚙ Agent Friendliness

MCP Quality
82
Documentation
88
Error Messages
85
Auth Simplicity
88
Rate Limits
85

🔒 Security

TLS Enforcement
100
Auth Strength
85
Scope Granularity
88
Dep. Hygiene
82
Secret Handling
88

Open source codebase allows full audit. SOC2 certified hosted service. Keys are hashed at rest. Self-hosting available for maximum control.

⚡ Reliability

Uptime/SLA
88
Version Stability
82
Breaking Changes
80
Error Recovery
85
AF Security Reliability

Best When

Best when building developer-facing APIs or agent platforms that need production-grade key management, rate limiting, and revocation without building the infrastructure from scratch.

Avoid When

Avoid when you need full OAuth 2.0, SAML, or user session management — use an identity provider instead.

Use Cases

  • Issue and verify API keys for developer-facing products built by agents or humans
  • Enforce per-key rate limits and quotas without building custom rate limiting infrastructure
  • Revoke compromised keys instantly with global propagation
  • Audit API key usage analytics to detect abuse or anomalous access patterns
  • Manage scoped temporary keys for delegated agent access with automatic expiration

Not For

  • Full identity and access management (IAM) — Unkey manages API keys, not user identities or OAuth flows
  • Replacing session-based auth or OAuth for user-facing login flows

Interface

REST API
Yes
GraphQL
No
gRPC
No
MCP Server
Yes
SDK
Yes
Webhooks
Yes

Authentication

Methods: api_key
OAuth: No Scopes: Yes

Root key used to manage other keys via API. Issued keys can be scoped with custom permissions and metadata. Root key should be stored as a secret and rotated regularly.

Pricing

Model: freemium
Free tier: Yes
Requires CC: No

Generous free tier covers small-scale agent platforms. Self-hosting is also available for teams that want full control.

Agent Metadata

Pagination
cursor
Idempotent
Full
Retry Guidance
Documented

Known Gotchas

  • Root key must be kept secret — exposure compromises all managed keys
  • Key verification result includes remaining rate limit — agents should read and respect this in their logic
  • MCP server is maintained separately from the main SDK and may lag slightly behind API changes
  • Soft-delete (revocation) is near-instant but not guaranteed to be synchronous across all edge nodes

Alternatives

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Scores are editorial opinions as of 2026-03-07.

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