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Sign every energy device command except the pre-pairing reads - #201
A live check on the captain's Powerwall 3 (2026-10-29) showed that Tesla's cloud answers HTTP 400 (powergate ... Error sending command) to the unsigned grpc_command for every energy device command except four pre-pairing reads: get_system_info, get_networking_status, get_signed_commands_public_key and list_authorized_clients. The same commands sent signed through device_command all reached the gateway. Signed dispatch_battery_power moved the battery from -7.3 kW to -2.4 kW, signed resume returned it, and signed schedule_backup_event/cancel_backup_event added and removed the event.
#199's signing table was the reverse of this (sign only island mode and two reads). This PR fixes it:
EnergySite._command is now the one routing point. If the site has a signing key, it signs every device command except the four in UNSIGNED_DEVICE_COMMANDS. Without a key it sends the unsigned grpc_command as before (Tesla refuses most of them, as before). set_island_mode/go_off_grid/reconnect_grid still raise SignedCommandRequired without a key.
TeslemetryEnergySite: with a key, dispatch_battery_power, resume_battery_operation and remove_authorized_client call super() and sign. add_authorized_client signs when a public_key is given; with no public_key it still calls Teslemetry's route, which registers Teslemetry's own key. Without a key, all of these keep their Teslemetry routes. get_networking_status/list_authorized_clients stay on their routes.
Signed add_authorized_client sends the client type as type, the proto field name. The unsigned JSON body keeps authorized_client_type unchanged.
Fleet REST routes (backup, storm_mode, operation, grid_import_export, ...) are not device commands and do not change.
Docs: signing table in docs/fleet_api_energy_sites.md and the dispatch section of docs/teslemetry.md.
That draft edits the same files. It adds if self._signer branches to four Fleet reads; after this PR those branches are redundant but harmless, because _command already signs. Its test test_teslemetry_routes_stay_unsigned_with_a_key expects keyed dispatch_battery_power on the Teslemetry route; that expectation is now wrong and must change to "signed" on rebase.
Risks
Signed add_authorized_client/remove_authorized_client were not tested live (the live check did not touch authorization writes). With a key they now sign, by the "sign everything but the four" rule.
Teslemetry's dispatch_battery_power, resume_battery_operation and backup-event routes still send unsigned and get Tesla's 400 until the Teslemetry api moves them to server signing. A keyless Teslemetry site cannot dispatch until then.
set_local_site_config_request has no fields in the proto, so a keyed site rejects any params for it locally before sending (json_format.ParseError).
Tests
tests/test_energysite_signed_transport.py now checks every device command: signed with a key on both backends, unsigned without one on Fleet, the four pre-pairing reads unsigned with a key, the dispatch/resume payloads, the signed add_authorized_client field names, and the keyless Teslemetry routes. Ran the energy-site, router, command-logging and Teslemetry authorized-client/pairing test files: 174 passed. pyright strict and ruff check pass.
A live check on a Powerwall 3 (2026-10-29) showed Tesla's cloud answers
HTTP 400 to every unsigned grpc_command except get_system_info,
get_networking_status, get_signed_commands_public_key and
list_authorized_clients. Signed through device_command, every command
tested reached the gateway: dispatch_battery_power moved the battery,
resume released it, and backup event schedule/cancel took effect.
EnergySite._command now signs every device command except those four
when the site has a key, and sends unsigned otherwise (as before).
TeslemetryEnergySite signs dispatch_battery_power,
resume_battery_operation and add/remove_authorized_client with a key,
and keeps its routes without one. The signed add_authorized_client
uses the proto field name "type" for the client type.
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docs/teslemetry.md
tesla_fleet_api/teslemetry/energysite.py
Walkthrough
Keyed Energy Sites now sign device commands except four pre-pairing reads. Teslemetry methods delegate eligible commands to the shared signed transport and retain existing Teslemetry routes in other cases. Tests and documentation describe the signing behavior and routing conditions.
Teslemetry methods delegate eligible keyed commands to the shared implementation and use Teslemetry routes otherwise. Tests and documentation cover the signing conditions and routes.
Keyless dispatch calls can fail despite the documentation and example. Correct the guidance or merge with this limitation understood.
Pre-merge checks: 4 · 1
Failed checks: 1 warning
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Title check
The title clearly and concisely describes the primary change: signing energy device commands except for the pre-pairing reads.
Description check
The description directly explains the command-routing changes, signing exceptions, Teslemetry behavior, documentation updates, risks, and test results.
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Write docstrings for the functions missing them to satisfy the coverage threshold.
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Inline comments:
Review comments at @docs/teslemetry.md:
- Around line 647-648: Update the battery-dispatch example in the Teslemetry
documentation to include the required signing private_key and din, or explicitly
state that its keyless dispatch and resume calls currently fail with Tesla HTTP
400.
Review comments at @tesla_fleet_api/teslemetry/energysite.py:
- Around line 340-342: Update the class documentation near
`dispatch_battery_power` and `resume_battery_operation` to limit the keyless
signing claim to Teslemetry routes that actually sign commands. Clarify that
these battery operation calls send unsigned commands without a client key and do
not promise successful keyless dispatch.
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Reviewing files that changed from the base of the PR and between 490a136 and 9eb7a74.
Files selected for processing: 5
docs/fleet_api_energy_sites.md
docs/teslemetry.md
tesla_fleet_api/tesla/energysite.py
tesla_fleet_api/teslemetry/energysite.py
tests/test_energysite_signed_transport.py
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TeslemetryEnergySite inherited the Fleet API grpc_command body for 12 energy
device commands, which Teslemetry rejects with 400. Without a signing key,
each now calls its dedicated Teslemetry route and never the generic command
route.
With a signing key, the commands that #201 signs go through super() and
Teslemetry's device_command route. The pre-pairing reads get_system_info,
raw_networking_status and get_signed_commands_public_key always use their
route.
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Summary
A live check on the captain's Powerwall 3 (2026-10-29) showed that Tesla's cloud answers HTTP 400 (
powergate ... Error sending command) to the unsignedgrpc_commandfor every energy device command except four pre-pairing reads:get_system_info,get_networking_status,get_signed_commands_public_keyandlist_authorized_clients. The same commands sent signed throughdevice_commandall reached the gateway. Signeddispatch_battery_powermoved the battery from -7.3 kW to -2.4 kW, signed resume returned it, and signedschedule_backup_event/cancel_backup_eventadded and removed the event.#199's signing table was the reverse of this (sign only island mode and two reads). This PR fixes it:
EnergySite._commandis now the one routing point. If the site has a signing key, it signs every device command except the four inUNSIGNED_DEVICE_COMMANDS. Without a key it sends the unsignedgrpc_commandas before (Tesla refuses most of them, as before).set_island_mode/go_off_grid/reconnect_gridstill raiseSignedCommandRequiredwithout a key.TeslemetryEnergySite: with a key,dispatch_battery_power,resume_battery_operationandremove_authorized_clientcallsuper()and sign.add_authorized_clientsigns when apublic_keyis given; with nopublic_keyit still calls Teslemetry's route, which registers Teslemetry's own key. Without a key, all of these keep their Teslemetry routes.get_networking_status/list_authorized_clientsstay on their routes.add_authorized_clientsends the client type astype, the proto field name. The unsigned JSON body keepsauthorized_client_typeunchanged.backup,storm_mode,operation,grid_import_export, ...) are not device commands and do not change.docs/fleet_api_energy_sites.mdand the dispatch section ofdocs/teslemetry.md.No version bump.
Coordination with #198
That draft edits the same files. It adds
if self._signerbranches to four Fleet reads; after this PR those branches are redundant but harmless, because_commandalready signs. Its testtest_teslemetry_routes_stay_unsigned_with_a_keyexpects keyeddispatch_battery_poweron the Teslemetry route; that expectation is now wrong and must change to "signed" on rebase.Risks
add_authorized_client/remove_authorized_clientwere not tested live (the live check did not touch authorization writes). With a key they now sign, by the "sign everything but the four" rule.dispatch_battery_power,resume_battery_operationand backup-event routes still send unsigned and get Tesla's 400 until the Teslemetry api moves them to server signing. A keyless Teslemetry site cannot dispatch until then.set_local_site_config_requesthas no fields in the proto, so a keyed site rejects any params for it locally before sending (json_format.ParseError).Tests
tests/test_energysite_signed_transport.pynow checks every device command: signed with a key on both backends, unsigned without one on Fleet, the four pre-pairing reads unsigned with a key, the dispatch/resume payloads, the signedadd_authorized_clientfield names, and the keyless Teslemetry routes. Ran the energy-site, router, command-logging and Teslemetry authorized-client/pairing test files: 174 passed.pyrightstrict andruff checkpass.