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feat(api): send a 12-hour heartbeat from self-hosted instances - #8239
This PR is stacked on #8237 (anonymous self-hosted telemetry and the off switch). Its base is that branch, so the diff shows only this PR's work. Merge it after #8237.
Context
Agenta cannot tell how many self-hosted instances are running, which version they run, or how much they are used. PostHog is the analytics service that receives Agenta's product events. After #8237, a self-hosted instance sends PostHog one install event and anonymous per-user events. No event says "this instance is still running", and nothing ties the per-user events to one instance.
Changes
The heartbeat event
A self-hosted instance with telemetry on now sends one instance_heartbeat event at most every 12 hours. The event holds counts and settings, never content. This is the event as the PostHog client sent it in the live test on a local EE stack with a paid license key (ids and domains replaced by placeholders):
The window is the time since the last heartbeat. The three window_ counts cover that window. A window_ count is null when its query takes longer than 5 seconds.
user_domains lists the 100 most common email domains of the instance's users, each with a user count. It never holds a full email address.
$geoip_disable is added by the PostHog Python client. It tells PostHog not to look up a location.
The event has no field with an email, a name, a URL or an IP address. PostHog still sees the network address of each request. When an event has no $ip value, or an empty one, PostHog fills it from that address. Only the PostHog project setting that discards client IP data stops PostHog from storing it.
How the heartbeat runs
A cron job is a command the container runs on a schedule. The API images get a new one:
telemetry.sh runs every hour in the API container. It calls POST /admin/telemetry/heartbeat with Authorization: Access <AGENTA_AUTH_KEY>. The route is an admin route and is not in the public API schema.
It reads the counts first, without a lock. Then, in one database transaction, it locks the instances row with FOR UPDATE SKIP LOCKED, sends the event, sends the group properties (next section), sets heartbeat_sent_at to the window end, and commits. A second API container on the same database skips the locked row, so only one container sends.
If PostHog refuses either send, the transaction rolls back, and the next hourly run sends the same window again. The event uuid comes from the instance id and the window start, so PostHog drops a second copy of the same window.
The route answers {"sent": true, "reason": "sent"}, or sent: false with reason set to not_due, disabled, cloud or failed.
An instance that was off for three days sends one event for the whole time, not six.
The PostHog instance group
A PostHog group is a named key that ties events together, here one instance. Every self-hosted per-user event from the API (the analytics middleware events and user_signed_up_v1) now carries the group. Before, a self-hosted app_created event had these properties:
After each heartbeat, the API also sets these properties on the group: instance_kind, agenta_version, edition, deployment_method, plan and the four total_ counts. Cloud events do not change.
A paid license key keeps telemetry on
On the enterprise edition, a paid license key now keeps telemetry on even when AGENTA_TELEMETRY_ENABLED=false. A paid key is an active key whose plan is not self_hosted_registered (the free key from registration). The switch works as before with no key, with the free key, with a paid key that says "telemetry": "exempt", and on the open source image.
Before, with a paid key and the switch off, the startup log said Telemetry is off (AGENTA_TELEMETRY_ENABLED=false), and GET /instance/telemetry answered {"enabled": false, "distinct_id": null, "groups": null}. After, the log says Telemetry is on (required by the license key), and the route answers:
The rule is in telemetry_status(), the one function that decides whether telemetry is on. The heartbeat, the per-user events, the feature flag reads and the browser all ask that function. It reads the key only when the switch is off.
Docs
The Heartbeat section of docs/docs/self-host/reference/03-telemetry.mdx lists every property, including $geoip_disable. A unit test compares that table with the model. The same page explains the paid key rule.
Tests
pytest oss/tests/pytest/unit/telemetry passes under both editions (66 passed with AGENTA_LICENSE=oss and with AGENTA_LICENSE=ee). The cases cover the exact payload fields and no email, URL or IP field; no second send within 12 hours; nothing sent with the switch off or on cloud; a refused send that rolls back; two concurrent callers that produce one send; the 100 domain cap; the group on self-hosted events and none on cloud; and the paid key rule (paid key on, exempt key off, free key and no key follow the switch, open source image never reads a key).
The lock and count SQL ran once against a scratch Postgres database. A second caller skipped the locked row, a failed send left the window due, and a slow count gave null.
A live test on a local stack, with a local receiver in place of PostHog, sent the payload shown above. Results are in the QA comment on this PR. This PR has no screen, so it has no recording.
CI runs on this PR. Format, lint and the API test jobs are listed in the checks.
How to review
api/oss/src/core/telemetry/heartbeat.py: the payload model, the collector and send_heartbeat(). Check the order: counts, then lock, then the two sends, then commit.
api/oss/src/dbs/postgres/instances/dao.py: the row lock and the count queries with their 5 second timeout.
api/oss/src/core/telemetry/service.py: group_identify(), instance_groups() and the paid key rule in telemetry_status().
api/oss/src/middlewares/analytics.py and api/oss/src/core/auth/supertokens/overrides.py: the one line each that adds the group.
api/oss/src/apis/fastapi/telemetry/router.py and api/entrypoints/routers.py: the admin route.
api/oss/src/crons/telemetry.sh, telemetry.txt and the four Dockerfiles: the hourly job.
docs/docs/self-host/reference/03-telemetry.mdx: the Heartbeat section.
Known limits and follow-ups
user_domains names the email domains of the instance's users. For most companies, the top domain is the company's own domain, so the field can name the company that runs the instance. The owner must confirm that he wants this field before the release. Removing it means deleting one field from the model, one query, and one docs row.
A paid license key keeps telemetry on even with the switch off, unless the key says "telemetry": "exempt". Operators who need the switch to work must get an exempt key.
The PostHog project setting that discards client IP data is a step for the PostHog project owner. This PR does not change it.
Added self-hosted instance telemetry heartbeats, sent periodically when telemetry is enabled.
Added an admin endpoint to check heartbeat status.
Paid Enterprise licenses now require telemetry, even if telemetry is switched off.
Self-hosted telemetry events now include instance-group information.
Documentation
Updated the self-hosted telemetry guide with heartbeat timing, reported data, and license requirements.
The change adds license-aware telemetry status and instance-group attribution. It adds a self-hosted heartbeat that collects instance and usage data, coordinates sends across API containers, and reports results through an admin endpoint called by an hourly cron job.
Eligible EE licenses can require telemetry when the telemetry switch is off. Self-hosted middleware and sign-up events include the instance group; cloud events retain their existing behavior. Tests and documentation cover these changes.
Heartbeat data and coordination api/oss/src/core/telemetry/heartbeat.py, api/oss/src/dbs/postgres/instances/dao.py, api/oss/src/utils/version.py, api/oss/tests/pytest/unit/telemetry/test_heartbeat.py, api/oss/tests/pytest/unit/telemetry/test_telemetry_docs.py, docs/docs/self-host/reference/03-telemetry.mdx
Heartbeat collection assembles instance metadata, aggregate totals, activity-window counts, and validated email domains. DAO methods schedule sends at 12-hour intervals, coordinate concurrent senders, and return None for count-query timeouts. Tests and documentation cover the payload, timing, coordination, and fields.
Heartbeat API and scheduled delivery api/oss/src/apis/fastapi/telemetry/*, api/entrypoints/routers.py, api/oss/src/crons/telemetry.*, api/oss/docker/*, api/ee/docker/*, hosting/docker-compose/*, api/oss/tests/pytest/unit/telemetry/test_heartbeat.py
The admin POST /admin/telemetry/heartbeat endpoint returns whether the heartbeat was sent and its reason. An hourly cron job calls the endpoint; OSS and EE Docker images and development compose services include the cron script and schedule.
sequenceDiagram
participant TelemetryCron
participant TelemetryRouter
participant send_heartbeat
participant InstancesDAO
participant PostHog
TelemetryCron->>TelemetryRouter: POST /admin/telemetry/heartbeat
TelemetryRouter->>send_heartbeat: request heartbeat
send_heartbeat->>InstancesDAO: fetch due window and acquire lock
InstancesDAO-->>send_heartbeat: window and lock result
send_heartbeat->>PostHog: capture heartbeat and identify instance group
Loading
Possibly related PRs
Agenta-AI/agenta#8237: Establishes self-hosted telemetry identity, enablement, and instance storage that this change extends with heartbeat reporting and license-based telemetry behavior.
Merge Risk: Minimal · up to 4ebf0
The change adds a self-hosted telemetry heartbeat and license-aware telemetry gating. No concrete merge-blocking defect was identified. The author's remaining checks are Helm cron addressing (#8243), nonzero window counts, and ingestion in the real PostHog project.
Pre-merge checks: 4 · 1
Failed checks: 1 warning
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Docstring Coverage
Docstring coverage is 46.43% which is insufficient. The required threshold is 60.00%. Docstring coverage is scoped to functions touched by this diff with cyclomatic complexity of at least 2. Documenta…
Write docstrings for the functions missing them to satisfy the coverage threshold.
Passed checks: 4 passed
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Explanation
Title check
The title clearly summarizes the main change: sending a 12-hour heartbeat from self-hosted instances.
Description check
The description explains the self-hosted heartbeat, its schedule and telemetry behavior, related changes, tests, and known limits.
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Check skipped because no linked issues were found for this pull request.
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Check skipped because no linked issues were found for this pull request.
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Write docstrings for the functions missing them to satisfy the coverage threshold.
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…nd the window counts
On an EE image without the license module, the heartbeat now sends the plan
with no key instead of failing. The evaluation run, agent turn and span counts
run under a 5 second statement timeout and are sent as null past it, because
two of those tables have no index on created_at. The domain query drops empty
domains before its limit, the route reuses the reason type, and a failed send
logs the error text.
Review loop result for head f97ec5b4f49a4b251973c8d15e584a0cca8130d2 (base 4588cfc56636f16db932d4bfb41e11e089cb9266, the parent branch tip), 3 rounds.
Lens
Final rating
Simplify
Low
Slop
Low
Fixed:
On an EE image without the license module, the heartbeat sends planself_hosted_community and license_key_id null instead of failing, and two tests run the real code path.
A failed heartbeat logs the error text, not only the error class.
The domain query drops empty domains before its limit, and the Python side only checks each domain.
instance_groups() lost a cloud branch that no caller reached.
The window counts run under a 5 second statement timeout and are sent as null past it. The timeout is handled after the transaction rolls back, and two unit tests cover the helper.
The heartbeat cron waits 60 seconds, which covers the worst case of the counts and the two PostHog calls.
Left on purpose:
The counts are read before the row lock, with a second check under the lock. The install ping locks the same row and skips it while it is locked, so a short heartbeat lock keeps the install ping from being skipped.
The unit tests use a fake DAO, because the unit suite does not need a database. The real lock and count SQL ran once against a scratch Postgres database and passed. The live QA step tests two API replicas and a send that is stopped halfway.
Review loop result for head f97ec5b4f49a4b251973c8d15e584a0cca8130d2 (base 4588cfc56636f16db932d4bfb41e11e089cb9266, the parent branch tip), 3 rounds.
Lens
Final rating
Correctness
Low
Security
Low
Fixed:
The three window counts can no longer run for a long time on a large database. evaluation_runs and session_turns have no index on created_at, so each count runs under a 5 second statement timeout and is sent as null past it.
The EE heartbeat no longer fails while the license module is missing.
Left on purpose:
Spans are counted by start_time, as the contract says, so a span that starts just before the end of a window and is stored after it is not counted. Counting by storage time needs a new index, and the error is small at the edge of a 12 hour window.
🤖 The AI agent says: Task 3.4 (a paid license key keeps telemetry on, unless the key is exempt) landed in this PR. It needs two things that only meet here: the one telemetry gate, telemetry_status(), from #8237, and active_license() from the license keys PR. The gate imports the license module lazily, like the heartbeat does, so this PR still works before the license keys PR merges: a missing module counts as no key. The integration step must check the rule with the real license module and a real paid key.
🤖 The AI agent says: Live QA results for this PR, on a local stack built from all five telemetry and licensing PRs merged together. This PR has no screen, so there are no recordings. A local fake PostHog server received every event, and every real PostHog host was blocked in the containers.
What was checked
Result
The cron script sends one heartbeat. A second call at once answers not_due and sends nothing
Pass
The heartbeat fields match the table on the telemetry docs page, and the totals match the database counts
Pass
Two API replicas fire the heartbeat at the same moment: one event is sent
Pass
Telemetry switched off: the heartbeat answers disabled and sends nothing
Pass
Enterprise image with a paid key: the heartbeat carries the plan and the key id, and stays on when the switch is off
Pass
A key that allows telemetry to be off: the switch turns the heartbeat off
Pass
A free key: the heartbeat follows the switch and carries the free plan
Pass
The instance group is sent with its documented properties
Pass
Cloud mode: the heartbeat route answers cloud and sends nothing
Pass
Example heartbeat from the enterprise run. The instance id, key id, event id and email domains are replaced with placeholders. user_domains holds only the part after @ of each user email, with a count.
{
"properties": {
"instance_id": "<instance_id>",
"instance_kind": "development",
"agenta_version": "v0.128.11",
"edition": "ee",
"deployment_method": "compose",
"plan": "self_hosted_enterprise",
"license_key_id": "<license_key_id>",
"total_organizations": 2,
"total_projects": 2,
"total_users": 2,
"total_workflows": 6,
"window_start": "2026-11-10T00:38:04.512688+00:00",
"window_end": "2026-11-10T01:10:23.058111+00:00",
"window_spans": 0,
"window_evaluation_runs": 0,
"window_agent_turns": 0,
"user_domains": [
{
"domain": "<domain-1>",
"users": 1
},
{
"domain": "<domain-2>",
"users": 1
}
],
"$groups": {
"instance": "<instance_id>"
},
"$geoip_disable": true
},
"timestamp": "2026-11-10T01:10:23.215534+00:00",
"distinct_id": "<instance_id>",
"event": "instance_heartbeat",
"uuid": "<event_uuid>"
}```After this run, the branch took in the latest telemetry PR head. The telemetry unit tests pass under both editions. The heartbeat was not rerun live after that merge, because the merge changed only browser settings and docs.Not checked live:- The Helm cron address (issue 8243, which existed before this PR).- Window counts above zero. The test instance had no spans, evaluation runs or agent turns in the window.- Ingestion in the real PostHog project.
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This PR is stacked on #8237 (anonymous self-hosted telemetry and the off switch). Its base is that branch, so the diff shows only this PR's work. Merge it after #8237.
Context
Agenta cannot tell how many self-hosted instances are running, which version they run, or how much they are used. PostHog is the analytics service that receives Agenta's product events. After #8237, a self-hosted instance sends PostHog one install event and anonymous per-user events. No event says "this instance is still running", and nothing ties the per-user events to one instance.
Changes
The heartbeat event
A self-hosted instance with telemetry on now sends one
instance_heartbeatevent at most every 12 hours. The event holds counts and settings, never content. This is the event as the PostHog client sent it in the live test on a local EE stack with a paid license key (ids and domains replaced by placeholders):{ "event": "instance_heartbeat", "distinct_id": "<instance_id>", "uuid": "<event_uuid>", "timestamp": "2026-11-10T01:10:23.215534+00:00", "properties": { "instance_id": "<instance_id>", "instance_kind": "development", "agenta_version": "v0.128.11", "edition": "ee", "deployment_method": "compose", "plan": "self_hosted_enterprise", "license_key_id": "<license_key_id>", "total_organizations": 2, "total_projects": 2, "total_users": 2, "total_workflows": 6, "window_start": "2026-11-10T00:38:04.512688+00:00", "window_end": "2026-11-10T01:10:23.058111+00:00", "window_spans": 0, "window_evaluation_runs": 0, "window_agent_turns": 0, "user_domains": [{"domain": "<domain-1>", "users": 1}, {"domain": "<domain-2>", "users": 1}], "$groups": {"instance": "<instance_id>"}, "$geoip_disable": true } }Terms used above:
instancestable. Thedistinct_id(the id PostHog counts as one "person") is that instance id.window_counts cover that window. Awindow_count is null when its query takes longer than 5 seconds.user_domainslists the 100 most common email domains of the instance's users, each with a user count. It never holds a full email address.$geoip_disableis added by the PostHog Python client. It tells PostHog not to look up a location.The event has no field with an email, a name, a URL or an IP address. PostHog still sees the network address of each request. When an event has no
$ipvalue, or an empty one, PostHog fills it from that address. Only the PostHog project setting that discards client IP data stops PostHog from storing it.How the heartbeat runs
A cron job is a command the container runs on a schedule. The API images get a new one:
telemetry.shruns every hour in the API container. It callsPOST /admin/telemetry/heartbeatwithAuthorization: Access <AGENTA_AUTH_KEY>. The route is an admin route and is not in the public API schema.instancesrow withFOR UPDATE SKIP LOCKED, sends the event, sends the group properties (next section), setsheartbeat_sent_atto the window end, and commits. A second API container on the same database skips the locked row, so only one container sends.uuidcomes from the instance id and the window start, so PostHog drops a second copy of the same window.The route answers
{"sent": true, "reason": "sent"}, orsent: falsewithreasonset tonot_due,disabled,cloudorfailed.An instance that was off for three days sends one event for the whole time, not six.
The PostHog instance group
A PostHog group is a named key that ties events together, here one instance. Every self-hosted per-user event from the API (the analytics middleware events and
user_signed_up_v1) now carries the group. Before, a self-hostedapp_createdevent had these properties:{"path": "/apps", "method": "POST", "status_code": 200, "auth_method": "ApiKey"}After:
{"path": "/apps", "method": "POST", "status_code": 200, "auth_method": "ApiKey", "$groups": {"instance": "<instance_id>"}}After each heartbeat, the API also sets these properties on the group:
instance_kind,agenta_version,edition,deployment_method,planand the fourtotal_counts. Cloud events do not change.A paid license key keeps telemetry on
On the enterprise edition, a paid license key now keeps telemetry on even when
AGENTA_TELEMETRY_ENABLED=false. A paid key is an active key whose plan is notself_hosted_registered(the free key from registration). The switch works as before with no key, with the free key, with a paid key that says"telemetry": "exempt", and on the open source image.Before, with a paid key and the switch off, the startup log said
Telemetry is off (AGENTA_TELEMETRY_ENABLED=false), andGET /instance/telemetryanswered{"enabled": false, "distinct_id": null, "groups": null}. After, the log saysTelemetry is on (required by the license key), and the route answers:{"enabled": true, "distinct_id": "<instance_id>:<user_id>", "groups": {"instance": "<instance_id>"}}The rule is in
telemetry_status(), the one function that decides whether telemetry is on. The heartbeat, the per-user events, the feature flag reads and the browser all ask that function. It reads the key only when the switch is off.Docs
The Heartbeat section of
docs/docs/self-host/reference/03-telemetry.mdxlists every property, including$geoip_disable. A unit test compares that table with the model. The same page explains the paid key rule.Tests
pytest oss/tests/pytest/unit/telemetrypasses under both editions (66 passed withAGENTA_LICENSE=ossand withAGENTA_LICENSE=ee). The cases cover the exact payload fields and no email, URL or IP field; no second send within 12 hours; nothing sent with the switch off or on cloud; a refused send that rolls back; two concurrent callers that produce one send; the 100 domain cap; the group on self-hosted events and none on cloud; and the paid key rule (paid key on, exempt key off, free key and no key follow the switch, open source image never reads a key).How to review
api/oss/src/core/telemetry/heartbeat.py: the payload model, the collector andsend_heartbeat(). Check the order: counts, then lock, then the two sends, then commit.api/oss/src/dbs/postgres/instances/dao.py: the row lock and the count queries with their 5 second timeout.api/oss/src/core/telemetry/service.py:group_identify(),instance_groups()and the paid key rule intelemetry_status().api/oss/src/middlewares/analytics.pyandapi/oss/src/core/auth/supertokens/overrides.py: the one line each that adds the group.api/oss/src/apis/fastapi/telemetry/router.pyandapi/entrypoints/routers.py: the admin route.api/oss/src/crons/telemetry.sh,telemetry.txtand the four Dockerfiles: the hourly job.docs/docs/self-host/reference/03-telemetry.mdx: the Heartbeat section.Known limits and follow-ups
user_domainsnames the email domains of the instance's users. For most companies, the top domain is the company's own domain, so the field can name the company that runs the instance. The owner must confirm that he wants this field before the release. Removing it means deleting one field from the model, one query, and one docs row.http://api:8000, which does not resolve in the cluster. So on Helm the heartbeat does not run yet. This is an older fault, tracked in Helm: cron jobs call http://api:8000, which does not resolve in the cluster #8243."telemetry": "exempt". Operators who need the switch to work must get an exempt key.