{"id":"a2a-agent-discovery","slug":"a2a-agent-discovery","name":"Discover and govern A2A/multi-agent registries","shortName":"Discover and govern A2A/multi-agent registries","problemStatement":"Need a registry to publish/find Agent Cards (A2A) and related MCP/skills across teams or the public internet — not just an MCP directory.","whenNotTopPick":"Not on AWS — Google Agent Registry if GCP; public/OSS multi-vendor — OpenAgora or a2a-registry.dev; MCP-only directories — Smithery/Glama/PulseMCP/official registry.","categoryIds":["cat-search-scrape","cat-sandboxes-browsers"],"depotPickProviderId":"aws-agent-registry","depotPickRationale":"Prefer governed enterprise catalogs when IAM/approvals matter; open registries when protocol interop and zero lock-in matter. Distinct from mcp-discovery.","runnersUpIds":["google-agent-registry","openagora","a2a-registry","pulse-mcp"],"weights":{"capabilityFit":0.25,"pricePerformance":0.18,"latencyReliability":0.15,"developerDx":0.15,"privacyPosture":0.1,"lockInRisk":0.07,"maturity":0.1},"methodologyNotes":"Prefer governed enterprise catalogs when IAM/approvals matter; open registries when protocol interop and zero lock-in matter. Distinct from mcp-discovery.","tags":["a2a"],"depth":{"whenNotToUse":{"text":"Not on AWS — Google Agent Registry if GCP; public/OSS multi-vendor — OpenAgora or a2a-registry.dev; MCP-only directories — Smithery/Glama/PulseMCP/official registry.","source":"editorial `whenNotTopPick` (data/jtbds.json)"},"whenNotToUseReason":null,"runnerUp":{"providerId":"google-agent-registry","name":"Google Cloud Agent Registry","overallForJob":7.78,"pickOverallForJob":7.96,"beatsPickOn":["maturity"],"source":"first resolvable entry of the job's editorially ranked `runnersUpIds`; scores are stored job-weighted scores"},"runnerUpReason":null,"lockIn":{"pickLockInRisk":7,"runnerUpLockInRisk":7.2,"scale":"0–10 stored curated estimate; higher = more lock-in (worse)","pickExitSignals":[],"runnerUpExitSignals":[],"pickNotes":[{"text":"AWS lock-in for cross-cloud fleets","field":"weaknesses"}],"selfHostFallback":[{"id":"a2a-protocol","name":"A2A protocol","license":"Apache-2.0","sourceUrl":"https://raw.githubusercontent.com/a2aproject/A2A/main/LICENSE"}],"migration":"The pick has lower stored lock-in risk than runner-up Google Cloud Agent Registry (7 vs 7.2). Self-host fallback listed for this job: A2A protocol.","migrationReason":null,"derivedFrom":"stored lockInRisk scores, provider tags (oss, self-host, openai-compat, open-models), free rows that list this job, and verbatim provider notes. No migration guide was invented."}},"freshness":{"pick":{"score":{"asOf":"2026-09-14","ageDays":43,"stale":true,"staleAfterDays":30,"reason":null},"lastReviewed":{"asOf":"2026-09-14","ageDays":43,"stale":true,"staleAfterDays":30,"reason":null},"sourceCheck":{"checkedAt":"2026-10-27","sourceUrls":2,"sourcesReachable":2,"pricingRows":0,"pricingRowsReconfirmed":0,"note":"A source re-check confirms the page is reachable and, for pricing rows, that the stored amount and SKU name appear on it. It does not re-derive or change the score.","reason":null}}}}