A2A
Variants seen in the corpus:
A2Aa2a
Providers using this tag (19)
Ranked by API Evangelist rating — Exemplar and Strong are expanded by default.
Strong 8 Solid coverage with minor gaps
Developing 7 Usable, with meaningful gaps to close
Thin 3 Limited public surface area
Emerging 1 Early or largely undocumented
APIs with this tag (17)
Ranked by the provider's API Evangelist rating — the Kin Score is scored per provider, not per API, so every API of a provider shares its band. How the rating works →
Exemplar 1 Complete, well-documented, and agent-ready
Strong 5 Solid coverage with minor gaps
Lacuna A2A AgentAgent-to-Agent JSON-RPC endpoint at https://www.lacuna.fm/a2a advertising the "Lacuna Music" agent card at ...Corti Agentic Framework APIBuild and orchestrate healthcare agents over the A2A protocol with prebuilt medical experts and MCP tool in...Kong Agent GatewayKong Agent Gateway is a capability of Kong AI Gateway (GA April 2026 with AI Gateway 3.14) that governs age...Kong AI GatewayKong AI Gateway is the connectivity and governance layer for AI-native applications. Built on Kong Gateway,...Gravitee AI Agent ManagementGravitee AI Agent Management brings the API management discipline to agentic AI ecosystems. It is delivered...
Developing 7 Usable, with meaningful gaps to close
Agent2Agent (A2A)Agent2Agent (A2A) is an open protocol that lets AI agents built by different organisations, on different fr...University of Amsterdam A2a APIThe a2a API from University of Amsterdam — 5 operation(s) for a2a.Kronos Quant Signal REST APILive REST/JSON API with 32 endpoints for price-path forecasting, market/risk context, accuracy audits, and ...Agno A2A APIThe A2A API from Agno — 15 operation(s) for a2a.anew Write/Read APIREST/HTTP API to encode self-contained HTML into shareable URLs (POST /write) and read pages back (GET /{sl...Neuronto ARD Registry APISearch, explore and audit Agentic Resource Discovery entries: MCP servers, A2A agents, OpenAPI services and...Kong Agent GatewayKong Agent Gateway is a capability of Kong AI Gateway (GA April 2026 with AI Gateway 3.14) that governs age...
Thin 3 Limited public surface area
SchemaSure Structured Extraction APIREST API (OpenAPI 3.1) exposing POST /v2/extract for text/HTML and POST /v2/extract-image for document imag...Finite State A2A Content APIPublic, anonymous, read-only JSON-RPC 2.0 API exposing Finite State's published content: blog posts, resour...LiteLLM A2A Agent Gateway APIProvides /a2a endpoints for the Agent-to-Agent (A2A) gateway, enabling agent registration, publishing, and ...
Emerging 1 Early or largely undocumented
Companies reaching this through an API (8)
These companies publish an API, specification or operation carrying “A2A” but do not classify their business under it. Listed unranked and kept out of the count above, because one tagged operation is not a statement about what a company does.
Score breakdown
Frequency
44.3
log-scaled weighted occurrences
Breadth
0.5
spread across providers
Quality lift
56.7
mean composite of providers using it
Cohesion
1.6
strength of nearest seed neighbor
Related tags
Agent Skills 6 co-occurrences
Registry 5 co-occurrences
Agentic AI 5 co-occurrences
LLM 5 co-occurrences
MCP 22 co-occurrences
Agents 12 co-occurrences
AI Agents 9 co-occurrences
Notification 5 co-occurrences
Where this tag comes from
Provider tag19
Api tag17
Openapi tag2
Openapi op tag20
Work with this as data
Every tag here is available over the APIs.io API and to AI agents over MCP.