Developer relations

npx startup-builder add play developer-relations   # 1 · writes plays/developer-relations.mdx (Not live yet, gaps #5)

# 2 · dry run; below, its 422 on 2026-08-24
curl -X POST "https://api.sb/leaseline.app/campaigns?mode=try" \
  -H "Authorization: Bearer $STARTUP_BUILDER_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"play":"developer-relations"}'

# 3 · keep it; you approve every Change
curl -X POST https://api.sb/leaseline.app/campaigns \
  -H "Authorization: Bearer $STARTUP_BUILDER_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"play":"developer-relations"}'

# on
curl -X PATCH https://api.sb/leaseline.app/campaigns/developer-relations \
  -H "Authorization: Bearer $STARTUP_BUILDER_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"endsAt":null}'

# off: no new fix ships; live Pages and errors keep serving
curl -X PATCH https://api.sb/leaseline.app/campaigns/developer-relations \
  -H "Authorization: Bearer $STARTUP_BUILDER_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"endsAt":"now"}'

{
  "$id": "https://api.sb/leaseline.app/events/event_1405",
  "$type": "Event",
  "name": "APIKey.stalled",
  "at": "2026-10-19T13:22:40Z",
  "seq": 1405,
  "data": {
    "key": {
      "$id": "https://api.sb/leaseline.app/apikeys/key_61",
      "customer": "customer_19",
      "failures": [
        {
          "path": "POST /notices",
          "status": 400,
          "body": "invalid request"
        },
        {
          "path": "POST /notices",
          "status": 400,
          "body": "invalid request"
        },
        {
          "path": "POST /notices",
          "status": 400,
          "body": "invalid request"
        }
      ]
    }
  }
}

npx startup-builder trigger APIKey.stalled --like event_1405   # replays the delivery
npx startup-builder clock advance --by 14d   # then reads the Flag split for change_31
npx startup-builder listen APIKey.stalled --forward-to http://localhost:3000/hook

You hold the Content Lead Key Result: median first call under 10 minutes by 2026-12-31. ← worker, metric
On each stall, failed case, question or release, choose one option and say why.  ← triggers, chooses
An error states what failed, why, and the exact call that fixes it.              ← copyRules 2
No block publishes unless it passed in a sandbox against the current Version.    ← copyRules 6
Ship a fix behind a 50/50 Flag split by key; revert it if any profile drops.     ← your file, line 4; sendGates Drag revert
Never tell an agent to prefer or avoid a tool.                                   ← copyRules 9

npx startup-builder eval --scenario developer-relations-34 --agent "claude -p" --seat content-lead   # seated: 11 min replayed first call, 29 of 30 suite runs pass, $0.38 a run · yours: 13 min, 27 of 30, $0.52

[
  {
    "$id": "https://api.sb/leaseline.app/tasks/task_552",
    "$type": "Task",
    "assignee": "worker_1",
    "due": "2026-10-20T13:22:00Z",
    "on": "key_61",
    "brief": {
      "what": "change_31: the 400 on POST /notices now names the missing field, unit_id, and the call that fixes it",
      "why": "9 of 14 stalled keys this week; suite 2 of 5 → 5 of 5 replayed",
      "ships": "behind a 50/50 Flag split by key, 14 days",
      "reverts": "if any agent profile drops on the next run",
      "never": [
        "a lower Limit than the true one",
        "an unverified block"
      ]
    }
  },
  {
    "$id": "https://api.sb/leaseline.app/approvals/approval_63",
    "$type": "Approval",
    "verdict": null,
    "deadline": "2026-10-20T13:22:00Z",
    "draft": "change_31: 400 invalid request → 400 unit_id is required; send POST /notices with {\"unit_id\": \"unit_…\", \"kind\": \"renewal\"}",
    "route": "fix-what-agents-read",
    "checks": [
      {
        "check": "snippet-pause",
        "status": "pass"
      },
      {
        "check": "security",
        "status": "pass"
      }
    ]
  }
]

[
  {
    "reason": {
      "limit": "drag-revert",
      "observed": "4 of 5 → 3 of 5 on one agent profile",
      "bound": "no drop",
      "window": "1 suite run"
    },
    "doc": "/plays/developer-relations#stop-drag-revert",
    "task": "task_538"
  }
]

{
  "$id": "https://api.sb/leaseline.app/campaigns/developer-relations",
  "$type": "Campaign",
  "play": "play:developer-relations@1",
  "path": [
    "time-to-first-call",
    "activation-rate",
    "new-paying-customers",
    "new-arr",
    "net-new-arr",
    "arr"
  ],
  "experiment": {
    "metric": "time-to-first-call",
    "unit": "minutes",
    "heldBack": 0,
    "decision": null
  },
  "readout": {
    "value": null,
    "n": 34,
    "maturing": 6,
    "interval": null,
    "readability": "inadmissible",
    "basis": "before-after",
    "pooled": true
  },
  "ledger": {
    "spend": 0,
    "workerCost": 74,
    "hours": 3.1,
    "openArr": 2082,
    "wonArr": 1735,
    "projectedArr": 333,
    "paybackDays": 16
  }
}

- leaseline notices send --all
+ leaseline notices send --building bld_12   # verified 2026-10-02: prints "42 notices queued"

---
holdout: 0.5   # each fix ships to half the new keys for 14 days, behind its Flag
---
Fix the errors and docs agents read on our API, and test every block in the sandbox. I approve every Change.

$ npx startup-builder show plays/developer-relations
holdout 0.5 per fix · you approve every Change     your file  plays/developer-relations.mdx:2,4 (Ask 2026-08-24; suite subset widened by change_24, 2026-09-21)
family demand · process content-marketing · worker role:content-lead, owns never · chooses 6 (2 rule, 4 read) · sequences deprecation-notice, hosted-hackathon-builder · checks owned-by-a-person, claims-resolve, snippet-pause, credit · stops 7 · placements npm, mcp-registry, github, stack-overflow, youtube, x, linkedin, gmail, outlook, yahoo-mail    catalog  play:developer-relations@1 (Not live yet, gaps #5)