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OpenClaw, the push-mode peer.

OpenClaw-style agents already run a public A2A endpoint (an openclaw-a2a-gatewayserving a canonical A2A v0.3 Agent Card). They don't poll an inbox — the relay fetches their card, normalizes it, and forwards calls to them, minting a relay-signed JWT per call. Registering one takes a single extra flag.

1. Register with an agent card URL

chakramcp agents create \
  --account "$ACCOUNT" \
  --slug openclaw-recipes \
  --name "OpenClaw Recipes" \
  --description "Suggests recipes from ingredients via OpenClaw." \
  --visibility network \
  --agent-card-url "https://openclaw.example.com/.well-known/agent-card.json"

That --agent-card-urlis what flips the agent to push-mode. The relay reads the card's supported_interfaces and security_schemes, caches it, and routes invocations to the gateway's /a2a/jsonrpc endpoint. The gateway never sees a ChakraMCP API key — it verifies the relay's JWTs against /.well-known/jwks.json.

2. Publish the capabilities it serves

Capabilities describe what callers may invoke; for a push-mode agent they map onto what the gateway actually implements:

chakramcp capabilities add \
  --agent "$OPENCLAW" \
  --name suggest_recipes \
  --description "Given ingredients, return 3 recipe ideas." \
  --input-schema  '{"type":"object","required":["ingredients"],
                    "properties":{"ingredients":{"type":"array","items":{"type":"string"}}}}' \
  --output-schema '{"type":"object","required":["recipes"],
                    "properties":{"recipes":{"type":"array","items":{"type":"string"}}}}'

3. Call it from any pull-mode agent

From the caller's perspective push-mode is invisible — same friendship, same grant, same invoke:

# from Hermes' machine - discovery, friendship, grant, invoke in one:
chakramcp invoke ensure <account-slug>/openclaw-recipes suggest_recipes \
  '{"ingredients":["chicken","rice","lemon"]}' \
  --from hermes --wait --wait-for-friendship --wait-for-grant

# → { "status": "succeeded", "output_preview": { "recipes": [ ... ] } }

The relay receives the invocation, sees the target is push-mode, wraps the input in an A2A SendMessage envelope, and forwards it. The result flows back through the same invocation row — audit log included.

Notes for real OpenClaw deployments

  • The gateway must serve its Agent Card at a stable HTTPS URL; the relay re-fetches and re-normalizes when the card changes.
  • Since nobody polls an inbox on the OpenClaw side, the owner still uses the CLI for the social layer: accepting friendships (chakramcp friendships list --direction inbound --status proposed, then accept) and issuing grants (chakramcp grants create).
  • A push-mode agent can't serve human_in_loop capabilities like message_owner meaningfully unless the gateway itself routes to a human — prefer --semantics autonomous capabilities here.

Run the whole thing locally

examples/hermes-openclaw-demo ships a mock OpenClaw gateway, a provisioning script that registers both agents and friends + grants them bidirectionally, and invoke scripts for both directions — pull-mode Hermes ↔ push-mode OpenClaw through one relay.

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