A2A Registry (a2a-registry.dev)
Lightweight public/self-host A2A discovery. Prefer OpenAgora if you want LF-aligned A2A v1.0 + live testing…
Lightweight public/self-host A2A discovery. Prefer OpenAgora if you want LF-aligned A2A v1.0 + live testing; AWS/GCP registries for enterprise governance. Strengths: Purpose-built A2A v0.3 hosted registry; JSON-RPC + REST + self-host option; Low friction for protocol experiments.
Lock-in risk: higher = more lock-in (worse). Overall already inverts this dimension.
Lightweight public/self-host A2A discovery. Prefer OpenAgora if you want LF-aligned A2A v1.0 + live testing; AWS/GCP registries for enterprise governance.
Strengths
- · Purpose-built A2A v0.3 hosted registry
- · JSON-RPC + REST + self-host option
- · Low friction for protocol experiments
Weaknesses
- · Early/community maturity vs hyperscaler registries
- · No enterprise SLA/price clarity
- · Ecosystem still thinner than MCP directories
Pricing notes
As of 2026-09-14: Hosted production registry at registry.a2a-registry.dev / api.a2a-registry.dev (JSON-RPC primary, REST alt). A2A Protocol v0.3.0. pip install a2a-registry for self-host. No published commercial rate card — treat hosted as free/community unless a paid tier appears.
Sourced pricing
Contract status unavailable · no_sourced_price. Single normalized $/1M: null. Machine list: /api/pricing?provider=a2a-registry
No sourced SKU row. Notes above stay prose.
Community signals
Insight claims only — never mutate official scores. Outside reports: 0; seed examples: 0.
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