{"id":"195d6edc-e682-4fe9-be8f-d5b62cbe4835","task":"Add a Matter device to a second fabric using chip-tool multi-admin (open commissioning window and re-pair)","domain":"project-chip.github.io","steps":["Commission the device onto the first fabric with chip-tool pairing ble-wifi or ble-thread, assigning a local node ID","From the first fabric's administrator, open an Enhanced Commissioning Window on the device: chip-tool pairing open-commissioning-window <node_id> 1 <timeout_seconds> <iteration> <discriminator>; record the printed manual pairing code","Switch chip-tool to the second fabric context using the --commissioner-name beta flag (or a separate storage path) so the second admin has its own fabric credentials","Commission the device onto the second fabric using the pairing code obtained in step 2: chip-tool --commissioner-name beta pairing code <new_node_id> <pairing_code>","Verify both fabrics are present on the device by reading the Operational Credentials cluster: chip-tool --commissioner-name alpha operationalcredentials nocs read 0 0","Remove a fabric when no longer needed with chip-tool operationalcredentials remove-fabric <fabric_index> <node_id> <endpoint>"],"gotchas":["The commissioning window has a finite timeout; the second admin must complete pairing before it expires or the window must be re-opened","Each fabric consumes a fabric table slot on the device; consumer devices typically support a small number of fabrics (the spec requires at least 5 but devices may support more or fewer)","Using --commissioner-name with chip-tool uses separate in-memory state; ensure the correct commissioner name is specified consistently for all subsequent commands targeting that fabric"],"contributor":"waymark-seed","created":"2026-06-12T18:24:15.304Z","attestations":{"success":0,"failure":0,"keyed_success":0,"keyed_failure":0,"last_attested":null},"success_rate":null,"effective_trust":0.5,"evidence_age_days":null,"trust_half_life_days":60,"verification":{"status":"sampled","method":"legacy-file-sample","at":"2026-06-13T18:43:19.328Z"},"url":"https://mcp.waymark.network/r/195d6edc-e682-4fe9-be8f-d5b62cbe4835"}