Kin Score › Agent readiness › A2A Agent Card
Agent-readiness dimension

A2A Agent Card

8 of 139 agent-readiness points 5.8% of the agent scoregraded — partial credit agent_card

The provider serves a machine-readable agent discovery manifest at the A2A well-known path (/.well-known/agent-card.json, RFC 8615), advertising its identity, capabilities, skills, endpoint and auth. Weighted above agent_skills despite low adoption for a structural reason: an agent card is the only agent surface in this rubric that CANNOT be derived on a provider's behalf — it is served from the provider's own host or it does not exist. Where mcp_server, agent_skills and agentic_access can all credit an artifact API Evangelist authored, this one is provider-published by construction, and so is immune to the provenance defect that distorts the others.

96providers publish it
0.3%of the 27,504 it applies to
26at full credit
70at partial credit

How it is scored

One signal, read from what the provider publishes, worth 8 points of the 139 in the agent-readiness score.

Signal the scorer readsPoints
a2a/<slug>-a2a.yml manifest, graded on conformance.grade against A2A 1.0.08

Grades and what each earns

This dimension is graded rather than pass/fail: how the signal was evidenced decides what fraction of the points it earns.

GradeCreditPointsProviders
conformant1.0×8.026
near-conformant0.6×4.817
flavored0.25×2.053
invalid0.0×0.00

Top providers

All 96 providers publishing this signal, ranked by credit earned, ties broken by composite.

1 Xquik8.0 conformantexemplar 2 Primitive8.0 conformantemerging 3 Sylvia API8.0 conformantstrong 4 Rhombus Systems8.0 conformantstrong 5 Hightouch8.0 conformantexemplar 6 Sarj AI Developer API8.0 conformantthin 7 Explorium8.0 conformantexemplar 8 Koala8.0 conformantstrong 9 Uphold8.0 conformantstrong 10 FieldPulse8.0 conformantstrong 11 BuiltWith8.0 conformantstrong 12 micro18.0 conformantdeveloping 13 PydanticAI8.0 conformantstrong 14 Ocient8.0 conformantdeveloping 15 IBANforge8.0 conformantthin 16 Superset8.0 conformantminimal 17 Scrapfly8.0 conformantthin 18 Superscale8.0 conformantthin 19 SchemaSure8.0 conformantemerging 20 1inch8.0 conformantthin 21 Genspark8.0 conformantemerging 22 Pixeltable8.0 conformantdeveloping 23 Finite State8.0 conformantthin 24 ReDoc8.0 conformantthin 25 Buddy8.0 conformantminimal 26 Phishin8.0 conformantminimal 27 Leadpages4.8 near-conformantdeveloping 28 ActiveCampaign4.8 near-conformantstrong 29 Sendcloud4.8 near-conformantstrong 30 Caretta4.8 near-conformantdeveloping 31 Decart4.8 near-conformantstrong 32 OpenSea4.8 near-conformantdeveloping 33 Interfaze4.8 near-conformantdeveloping 34 Helius4.8 near-conformantthin 35 Novita AI4.8 near-conformantdeveloping 36 TrueFoundry4.8 near-conformantdeveloping 37 Vidyard4.8 near-conformantexemplar 38 Requesty4.8 near-conformantdeveloping 39 Tavily4.8 near-conformantdeveloping 40 Model Context Protocol (MCP)4.8 near-conformantthin 41 FastMCP4.8 near-conformantthin 42 TensorFeed4.8 near-conformantminimal 43 Urantia Papers4.8 near-conformantminimal 44 Agentcard2.0 flavoredstrong 45 Sageox2.0 flavoredemerging 46 Taskfolk2.0 flavoredstrong 47 duvo.ai2.0 flavoreddeveloping 48 Permutive2.0 flavoreddeveloping 49 Lacuna2.0 flavoredstrong 50 Curlec2.0 flavoredstrong 51 Dash02.0 flavoredstrong 52 Nylas2.0 flavoredexemplar 53 Meow2.0 flavoredemerging 54 Brale2.0 flavoredstrong 55 Cloudflare2.0 flavoredstrong 56 Criteo2.0 flavoredstrong 57 Savvly2.0 flavoredemerging 58 Smartlead2.0 flavoredstrong 59 Hilos2.0 flavoreddeveloping 60 Seekr2.0 flavoredstrong 61 Art Blocks2.0 flavoredthin 62 AVORA Agent Forge2.0 flavoredthin 63 Rockerbox2.0 flavoreddeveloping 64 Apstal2.0 flavoreddeveloping 65 Pinecone2.0 flavoreddeveloping 66 Apideck2.0 flavoredstrong 67 Gravitee2.0 flavoreddeveloping 68 Speakeasy2.0 flavoreddeveloping 69 Maker.me2.0 flavoredminimal 70 Tano2.0 flavoredemerging 71 Automation Preflight API2.0 flavoreddeveloping 72 BuyWhere2.0 flavoreddeveloping 73 Stacklok2.0 flavoredemerging 74 Razorpay2.0 flavoreddeveloping 75 Inworld AI2.0 flavoredthin 76 Inth2.0 flavoreddeveloping 77 Attio2.0 flavoredthin 78 QuickNode2.0 flavoredthin 79 Stack Auth2.0 flavoredthin 80 Streamkap2.0 flavoredthin 81 Forter2.0 flavoredthin 82 Teamwork.com2.0 flavoredthin 83 RoxyAPI2.0 flavoredemerging 84 Symbiotic2.0 flavoredemerging 85 Monday2.0 flavoredemerging 86 Tigris2.0 flavoredminimal 87 Moss2.0 flavoredminimal 88 Orbit Fab2.0 flavoredminimal 89 Glif2.0 flavoredemerging 90 IntegrationOS2.0 flavoredemerging 91 AI Dev Jobs2.0 flavoredminimal 92 HeroHunt People Search2.0 flavoredminimal 93 Suprsonic2.0 flavoredminimal 94 Voidly2.0 flavoredminimal 95 Scopely2.0 flavoredminimal 96 Light Anchor2.0 flavoredminimal

The other 18 dimensions

Machine-Readable ContractAgentic Access ContractDocumented ReversibilityMCP ServerMachine-Readable AuthIdempotencyStable Error SemanticsRequest/Response ExamplesRate-Limit SignalingTyped Event SurfaceAgent SkillsWell-Known CatalogConsent & Bot IdentityA2A Agent CardDry-Run / Simulate ModeDelegated User IdentityProtected Resource MetadataRegistration Without a HumanAgentic Commerce Surface
Contract QualityAccess ClarityDeveloper ErgonomicsOperational TransparencyContract GovernanceDiscoverabilityRegulatory PostureOpen Source Surface
Move this number. Every provider in the catalog is profiled from a public repository at github.com/api-evangelist/<provider>, and each check above names the exact artifact it reads. Publish the artifact, open a pull request, and the next scoring run picks it up — no gatekeeping and no fee. The full rubric is at apis.io/rating/, and prioritized profiling is the fast lane if you would rather have it done for you.

Scored on rubric v0.17.2 across 27,504 providers · lists rebuilt 2026-09-01 · capped at the top 500 per page.