The Agent Identity and Integrity Guard for AI agents.
Stop agent spoofing and payload tampering in under 1 ms. Open source guard for cross cloud agent traffic, as an SDK or Go sidecar.
Built on Ed25519 JWS, SHA-256 body hashing, and strict iat/exp checks, with sub-millisecond overhead in Python and Go.
CapiscIO sits alongside your existing IAM and API gateway, focusing on agent-to-agent and agent-to-tool calls.
Where agent systems fail today
Integration Breaks in Production
Agent passes validation but endpoints fail. Users see errors. Your reputation suffers.
→ CapiscIO CLI validates agent cards and tests live endpoints before deployment
Catch Issues Early →No Way to Verify Agent Authenticity
Your payment-agent calls ledger-agent. How do you know the request is real, untampered, and fresh?
→ CapiscIO Guard enforces signed envelopes, body integrity, and replay protection on every request
Protect Your Agents →No Central View of Agent Traffic
Which agents are calling which? Who's failing checks? No central place to see what's happening across your services.
→ CapiscIO Platform is currently in design with early partners. Today, you start with Guard + CLI.
Learn about design partnerships →Building the standard for agent trust
We are building the platform in stages. Today you can deploy the Guard; the Registry and Platform will follow with design partners.
| Stage 1: The Guard (Live) | Stage 2: The Registry (In development) | Stage 3: The Platform (Planned) |
|---|---|---|
| Secure the node. | Secure the network. | Secure the enterprise. |
| Local enforcement SDKs and sidecars. | Centralized key discovery and management. | Global policy and governance. |
| Identity, integrity, and freshness checks. | Automated key lifecycle and trust stores. | Real time observability and compliance reporting. |
Simple, Transparent Pricing
Open core for everyone. Custom engagements for teams that need more.
Community (Open Core)
- Capiscio SDK (Python)
- Capiscio Sidecar (Go Sidecar)
- Runs entirely in your environment
- Unlimited local validations
- No SaaS metering or data egress
Enterprise
- Design partner pilots
- Agent hardening engagements
- Custom policy & integration support
- Early access to managed registry
Built for A2A Protocol—Ready for Any Agent
The Agent-to-Agent (A2A) protocol is an open standard developed by Google and now governed by the Linux Foundation.
CapiscIO started by enforcing the A2A Protocol and now applies the same guard pattern to any agent traffic – starting with A2A today and extending to other protocols as they emerge.
Developer Experience First
Drop-in guard for your agent endpoints. No external SaaS, no config files, no SDK lock-in.
One command to validate and test:
capiscio validate ./agent-card.json --test-liveOne guard to protect:
from fastapi import FastAPI
from capiscio_sdk import SimpleGuard
app = FastAPI()
# Add a protocol aware guard in two lines.
guard = SimpleGuard(app)
@app.post("/transfer")
async def transfer():
return {"status": "ok"}Latest Insights
Learn about A2A Protocol, agent validation, and trust infrastructure
Ready to Build Trust into Your Agents?
Start securing agent traffic today. Validate agent cards with the CLI and enforce agent identity and integrity with the Guard – free for developers.
