Open Standard

Agent-to-Agent Protocol -- interoperability without boundaries

c10r implements the A2A (Agent-to-Agent) open standard, enabling your agents to discover, communicate with, and delegate tasks to agents built on any platform, by any vendor, using any framework. One protocol, universal agent interoperability.

Three primitives for cross-platform agent communication

A2A defines how agents find each other, how they exchange tasks, and how they deliver results -- using open web standards

Primitive 1

Agent Card

A machine-readable manifest that describes an agent's identity, capabilities, supported skills, and authentication requirements. Published at a well-known URL for automatic discovery.

Primitive 2

Tasks and Messages

Agents exchange structured tasks over HTTP using JSON-RPC. Long-running operations stream progress via Server-Sent Events. Each task has a lifecycle: submitted, working, completed, or failed.

Primitive 3

Artifacts

When a task completes, results are delivered as typed artifacts -- structured data, documents, files, or any content both agents can parse. Each artifact has a MIME type and schema for reliable processing.

Implementation

Deploy A2A endpoints with zero additional infrastructure

When you deploy agents on c10r, the platform automatically exposes A2A-compatible endpoints for each agent. External agents discover your capabilities through the Agent Card, submit tasks through the standard JSON-RPC interface, and receive results as structured artifacts.

No proxy servers, no custom API gateways, no protocol translation layers. c10r handles the A2A protocol natively so your agents are immediately interoperable with the broader ecosystem.

  • Auto-generated Agent Cards -- capabilities derived from your agent configuration
  • Standard JSON-RPC endpoints -- compliant with the A2A specification out of the box
  • SSE streaming -- real-time progress updates for long-running tasks
Agent Card
Published
"name": "acme-support-agent",
"description": "Handles support tickets and escalations",
"url": "https://c10r.ai/a2a/agent_acme_support",
"capabilities": {
"streaming": true,
"pushNotifications": true
},
"skills": [
{ "id": "triage", "name": "Classify and route tickets" },
{ "id": "resolve", "name": "Auto-resolve known issues" },
{ "id": "escalate", "name": "Escalate to human agent" }
]
Discoverable by any A2A-compatible agent at /.well-known/agent.json
A2A Ecosystem
Salesforce
SAP
ServiceNow
LangChain
MongoDB
Atlassian
PayPal
Intuit
Box
Cohere
Workday
Deloitte
+ Enterprise adopters
AccentureBCGCapgeminiKPMGMcKinseyPwC
50+
technology partners building on A2A
Ecosystem

An open standard backed by the industry

A2A is not a proprietary protocol. It is an open specification developed by Google with contributions from over 50 technology partners -- Salesforce, SAP, ServiceNow, LangChain, and more. Enterprise consulting firms including Accenture, BCG, and McKinsey are deploying A2A across their client portfolios.

By supporting A2A natively, c10r ensures your agents can interoperate with the growing ecosystem of A2A-compatible platforms and services -- without custom integration work for each new partner.

  • Open specification -- built on HTTP, JSON-RPC, and SSE with no proprietary extensions
  • Expanding network -- new platforms join every month, increasing the agents your system can reach
  • Enterprise security -- authentication built into the spec using OpenAPI-compatible standards
Cross-Platform Scenarios

Your agents interoperate with agents you did not build

A2A enables scenarios where agents from different organizations collaborate on shared tasks. A procurement agent from one company can negotiate terms with your sales agent. A logistics agent can coordinate delivery schedules with your operations agent. An HR system's agent can request onboarding documents from your compliance agent.

These interactions happen through the standard protocol -- no bilateral API agreements, no custom webhooks, no manual coordination.

  • Cross-org automation -- agents from different companies complete shared workflows autonomously
  • Multi-step coordination -- long-running tasks with streaming progress updates across platforms
  • Full observability -- every cross-platform interaction logged with complete audit trail
Cross-Platform Task Flow
1
Discovery
External agent fetches /.well-known/agent.json and discovers available skills and authentication method
2
Task Submission
Client agent sends JSON-RPC request: invoke skill "resolve" with ticket context and customer history
3
Execution + Streaming
Your c10r agent processes the request, streams progress updates via SSE as it works through resolution steps
4
Artifact Delivery
Task completed
Resolution artifact returned with structured data, actions taken, and follow-up recommendations
A2A Security ConfigurationActive
Authentication
Required for all incoming A2A requests
OAuth 2.0, API keys, and JWT tokens supported. Configure per-agent or use a global policy.
Skill Permissions
Granular control over exposed capabilities
Enable or disable individual skills for external agents. Internal agents retain full access regardless.
Audit Log
Complete record of all A2A interactions
Every inbound and outbound A2A request logged with full payload, response, latency, and outcome.
Security Model

Open protocol, controlled access

Interoperability does not mean open access. Every A2A interaction requires authentication. You control which skills are exposed to external agents, what data they can access, and what actions they can trigger. Internal agents operate with full permissions; external agents see only what you explicitly publish.

c10radds workspace-level A2A policies on top of the protocol's built-in security. Enable or disable external A2A access with a single toggle, or configure fine-grained per-skill permissions.

  • Standard auth -- OAuth 2.0 and JWT authentication built into the protocol specification
  • Skill-level control -- expose triage but not escalation, or quotes but not invoicing
  • Kill switch -- disable all external A2A access instantly without affecting internal operations
A2A Protocol

Your agents, accessible to every A2A-compatible system on the planet

The A2A protocol is becoming the standard for how agents interoperate across platforms. Deploy on c10r and your agents join this global network -- discoverable, interoperable, and ready for the agent economy.