diff --git a/API.md b/API.md
index 1fef5dc..97feef5 100644
--- a/API.md
+++ b/API.md
@@ -407,8 +407,13 @@ The store is exposed as a `LibDashStore` instance (see `src/index.js`). Each met
 - [printeragent](API.printeragent.md)
   - `create(googleAuthId: number, input: {name: string, pairingpin: string, sort?: number}, tx?: object): Promise<{id: number, companyId: number, name: string, token: string|null, pairingpin: string|null, pairedAt: string|null, clientserial: string|null, clientmodel: string|null, clientstate: string|null, agentversion: string|null, lastseenAt: string|null, updatedAt: string, sort: number}>`
   - `delete(googleAuthId: number, id: number, tx?: object): Promise<void>`
+  - `findByPairingpin(pairingpin: string, tx?: object): Promise<{id: number, companyId: number, name: string, token: string|null, pairingpin: string|null, pairedAt: string|null, clientserial: string|null, clientmodel: string|null, clientstate: string|null, agentversion: string|null, lastseenAt: string|null, updatedAt: string, sort: number}|null>`
+  - `findByToken(token: string, tx?: object): Promise<{id: number, companyId: number, name: string, token: string|null, pairingpin: string|null, pairedAt: string|null, clientserial: string|null, clientmodel: string|null, clientstate: string|null, agentversion: string|null, lastseenAt: string|null, updatedAt: string, sort: number}|null>`
   - `list(googleAuthId: number, tx?: object): Promise<Array<{id: number, companyId: number, name: string, token: string|null, pairingpin: string|null, pairedAt: string|null, clientserial: string|null, clientmodel: string|null, clientstate: string|null, agentversion: string|null, lastseenAt: string|null, updatedAt: string, sort: number}>>`
+  - `pair(id: number, input: {token: string, clientserial?: string, clientmodel?: string, agentversion?: string, pairedAt?: string}, tx?: object): Promise<{id: number, companyId: number, name: string, token: string|null, pairingpin: string|null, pairedAt: string|null, clientserial: string|null, clientmodel: string|null, clientstate: string|null, agentversion: string|null, lastseenAt: string|null, updatedAt: string, sort: number}>`
+  - `touchLastseen(id: number, agentversion?: string|null, tx?: object): Promise<{id: number}>`
   - `update(googleAuthId: number, input: {id: number, name?: string, sort?: number}, tx?: object): Promise<{id: number, companyId: number, name: string, token: string|null, pairingpin: string|null, pairedAt: string|null, clientserial: string|null, clientmodel: string|null, clientstate: string|null, agentversion: string|null, lastseenAt: string|null, updatedAt: string, sort: number}>`
+  - `updateState(id: number, clientstate: string|null, tx?: object): Promise<{id: number, companyId: number, name: string, token: string|null, pairingpin: string|null, pairedAt: string|null, clientserial: string|null, clientmodel: string|null, clientstate: string|null, agentversion: string|null, lastseenAt: string|null, updatedAt: string, sort: number}>`
 - [retoure](API.retoure.md)
   - `create(googleAuthId: number, body: {number?: string, date: string, entityId?: number, externalNumber?: string, lines?: Array<object>}, tx?: object): Promise<object>`
   - `createShipment(googleAuthId: number, retoureId: number, input: object, tx?: object): Promise<object>`
diff --git a/API.printeragent.md b/API.printeragent.md
index 0fe6c58..3d70b85 100644
--- a/API.printeragent.md
+++ b/API.printeragent.md
@@ -61,6 +61,52 @@ Deletes a printer agent of the user's selected company.
 await store.printeragent.delete(42, 5);
 ```
 
+## `printeragent.findByPairingpin`
+
+*Source: `src/store/printeragent/findByPairingpin.js`*
+
+Finds a printer agent by its pairing pin.
+
+**Parameters**
+
+| Name | Type | Description |
+| --- | --- | --- |
+| `pairingpin` | `string` | The pairing pin to search for. |
+| `[tx]` | `object` | Optional transaction to run within. |
+
+**Returns**
+
+`Promise<{id: number, companyId: number, name: string, token: string|null, pairingpin: string|null, pairedAt: string|null, clientserial: string|null, clientmodel: string|null, clientstate: string|null, agentversion: string|null, lastseenAt: string|null, updatedAt: string, sort: number}|null>` — The printer agent, or null if not found.
+
+**Example**
+
+```js
+const agent = await store.printeragent.findByPairingpin('123456');
+```
+
+## `printeragent.findByToken`
+
+*Source: `src/store/printeragent/findByToken.js`*
+
+Finds a printer agent by its authentication token.
+
+**Parameters**
+
+| Name | Type | Description |
+| --- | --- | --- |
+| `token` | `string` | The auth token to search for. |
+| `[tx]` | `object` | Optional transaction to run within. |
+
+**Returns**
+
+`Promise<{id: number, companyId: number, name: string, token: string|null, pairingpin: string|null, pairedAt: string|null, clientserial: string|null, clientmodel: string|null, clientstate: string|null, agentversion: string|null, lastseenAt: string|null, updatedAt: string, sort: number}|null>` — The printer agent, or null if not found.
+
+**Example**
+
+```js
+const agent = await store.printeragent.findByToken('abc...');
+```
+
 ## `printeragent.list`
 
 *Source: `src/store/printeragent/list.js`*
@@ -85,6 +131,47 @@ const agents = await store.printeragent.list(42);
 // => [{ id, companyId, name, token, pairingpin, pairedAt, clientserial, clientmodel, clientstate, agentversion, lastseenAt, updatedAt, sort }]
 ```
 
+## `printeragent.pair`
+
+*Source: `src/store/printeragent/pair.js`*
+
+Completes device pairing for a printer agent.
+
+**Parameters**
+
+| Name | Type | Description |
+| --- | --- | --- |
+| `id` | `number` | The printer agent id. |
+| `input` | `object` |  |
+| `input.token` | `string` | Auth token for the paired device. |
+| `[input.clientserial]` | `string` | Device serial identifier. |
+| `[input.clientmodel]` | `string` | Device model name. |
+| `[input.agentversion]` | `string` | Device agent software version. |
+| `[input.pairedAt]` | `string` | Timestamp when paired. |
+| `[tx]` | `object` | Optional transaction to run within. |
+
+**Returns**
+
+`Promise<{id: number, companyId: number, name: string, token: string|null, pairingpin: string|null, pairedAt: string|null, clientserial: string|null, clientmodel: string|null, clientstate: string|null, agentversion: string|null, lastseenAt: string|null, updatedAt: string, sort: number}>`
+
+## `printeragent.touchLastseen`
+
+*Source: `src/store/printeragent/touchLastseen.js`*
+
+Updates lastseen_at (and optionally agentversion) for a printer agent.
+
+**Parameters**
+
+| Name | Type | Description |
+| --- | --- | --- |
+| `id` | `number` | The printer agent id. |
+| `[agentversion]` | `string|null` | Optional agent version to update. |
+| `[tx]` | `object` | Optional transaction to run within. |
+
+**Returns**
+
+`Promise<{id: number}>`
+
 ## `printeragent.update`
 
 *Source: `src/store/printeragent/update.js`*
@@ -115,3 +202,21 @@ Updates name and/or sort of a printer agent of the user's selected company.
 ```js
 const agent = await store.printeragent.update(42, { id: 5, name: 'Kitchen printer', sort: 1 });
 ```
+
+## `printeragent.updateState`
+
+*Source: `src/store/printeragent/updateState.js`*
+
+Updates the client state of a printer agent.
+
+**Parameters**
+
+| Name | Type | Description |
+| --- | --- | --- |
+| `id` | `number` | The printer agent id. |
+| `clientstate` | `string|null` | The state payload/string. |
+| `[tx]` | `object` | Optional transaction to run within. |
+
+**Returns**
+
+`Promise<{id: number, companyId: number, name: string, token: string|null, pairingpin: string|null, pairedAt: string|null, clientserial: string|null, clientmodel: string|null, clientstate: string|null, agentversion: string|null, lastseenAt: string|null, updatedAt: string, sort: number}>`
diff --git a/scripts/test-printeragent.js b/scripts/test-printeragent.js
index a0ec519..61686a5 100644
--- a/scripts/test-printeragent.js
+++ b/scripts/test-printeragent.js
@@ -18,29 +18,64 @@ try {
   assert.deepEqual(await store.printeragent.list(googleAuthId), []);
   await assert.rejects(store.printeragent.create(googleAuthId, { name: ' ', pairingpin: '1' }), /Invalid printeragent/);
 
-  const a = await store.printeragent.create(googleAuthId, { name: ' Bar ', pairingpin: '123456' });
+  const a = await store.printeragent.create(googleAuthId, { name: ' Bar ', pairingpin: '123456', sort: 5 });
   assert.equal(a.name, 'Bar');
   assert.equal(a.pairingpin, '123456');
   assert.equal(a.token, null);
+  assert.equal(a.sort, 5);
   assert.equal(a.companyId, company.id);
   assert.ok(a.updatedAt);
 
-  assert.equal(a.sort, 0);
-  const s1 = await store.printeragent.update(googleAuthId, { id: a.id, sort: 5 });
-  assert.equal(s1.sort, 5);
-  assert.equal(s1.name, 'Bar');
-  await assert.rejects(store.printeragent.update(googleAuthId, { id: a.id }), /Invalid printeragent/);
-  await assert.rejects(store.printeragent.update(googleAuthId, { id: a.id, sort: 1.5 }), /Invalid printeragent/);
-  const b = await store.printeragent.update(googleAuthId, { id: a.id, name: 'Kitchen' });
-  assert.equal(b.name, 'Kitchen');
-  await assert.rejects(store.printeragent.update(googleAuthId, { id: 9999, name: 'x' }), /Printeragent not found/);
-  await assert.rejects(store.printeragent.update(googleAuthId, { id: a.id, name: '' }), /Invalid printeragent/);
+  // findByPairingpin
+  const foundByPin = await store.printeragent.findByPairingpin('123456');
+  assert.equal(foundByPin.id, a.id);
+  assert.equal(await store.printeragent.findByPairingpin('999999'), null);
 
-  assert.equal((await store.printeragent.list(googleAuthId)).length, 1);
+  // pair
+  const paired = await store.printeragent.pair(a.id, {
+    token: 'test-token-123',
+    clientserial: 'SN12345',
+    clientmodel: 'Epson TM-T88VI',
+    agentversion: '1.0.0',
+  });
+  assert.equal(paired.token, 'test-token-123');
+  assert.equal(paired.clientserial, 'SN12345');
+  assert.equal(paired.clientmodel, 'Epson TM-T88VI');
+  assert.equal(paired.agentversion, '1.0.0');
+  assert.equal(paired.pairingpin, null);
+  assert.ok(paired.pairedAt);
+
+  // findByToken
+  const foundByToken = await store.printeragent.findByToken('test-token-123');
+  assert.equal(foundByToken.id, a.id);
+  assert.equal(foundByToken.clientmodel, 'Epson TM-T88VI');
+  assert.equal(await store.printeragent.findByToken('invalid-token'), null);
+
+  // updateState
+  const withState = await store.printeragent.updateState(a.id, { online: true, paper: 'ok' });
+  assert.equal(withState.clientstate, JSON.stringify({ online: true, paper: 'ok' }));
+
+  // touchLastseen
+  await store.printeragent.touchLastseen(a.id, '1.0.1');
+  const afterTouch = await store.printeragent.findByToken('test-token-123');
+  assert.equal(afterTouch.agentversion, '1.0.1');
+
+  // update name and sort
+  const b = await store.printeragent.update(googleAuthId, { id: a.id, name: 'Kitchen', sort: 1 });
+  assert.equal(b.name, 'Kitchen');
+  assert.equal(b.sort, 1);
+
+  // list
+  const list = await store.printeragent.list(googleAuthId);
+  assert.equal(list.length, 1);
+  assert.equal(list[0].name, 'Kitchen');
+  assert.equal(list[0].sort, 1);
+
+  // delete
   await store.printeragent.delete(googleAuthId, a.id);
-  await assert.rejects(store.printeragent.delete(googleAuthId, a.id), /Printeragent not found/);
+  assert.equal(await store.printeragent.findByToken('test-token-123'), null);
   assert.deepEqual(await store.printeragent.list(googleAuthId), []);
-  console.log('printeragent OK');
+  console.log('printeragent full test OK');
 } finally {
   await provider.close?.();
   rmSync(tempDir, { recursive: true, force: true });
diff --git a/src/store/printeragent/findByPairingpin.js b/src/store/printeragent/findByPairingpin.js
index 60a3161..c2122e3 100644
--- a/src/store/printeragent/findByPairingpin.js
+++ b/src/store/printeragent/findByPairingpin.js
@@ -24,3 +24,4 @@ export default function findByPairingpin(provider) {
     return result.rows[0] ? shape(result.rows[0]) : null;
   };
 }
+
diff --git a/src/store/printeragent/findByToken.js b/src/store/printeragent/findByToken.js
index 1e438f5..9b306e8 100644
--- a/src/store/printeragent/findByToken.js
+++ b/src/store/printeragent/findByToken.js
@@ -25,3 +25,4 @@ export default function findByToken(provider) {
     return result.rows[0] ? shape(result.rows[0]) : null;
   };
 }
+
diff --git a/src/store/printeragent/pair.js b/src/store/printeragent/pair.js
index d5a11c9..a283685 100644
--- a/src/store/printeragent/pair.js
+++ b/src/store/printeragent/pair.js
@@ -59,3 +59,4 @@ export default function pair(provider) {
     return shape(updated.rows[0]);
   };
 }
+
diff --git a/src/store/printeragent/touchLastseen.js b/src/store/printeragent/touchLastseen.js
index d77bb49..cad859c 100644
--- a/src/store/printeragent/touchLastseen.js
+++ b/src/store/printeragent/touchLastseen.js
@@ -37,3 +37,4 @@ export default function touchLastseen(provider) {
     return { id: numericId };
   };
 }
+
diff --git a/src/store/printeragent/updateState.js b/src/store/printeragent/updateState.js
index 1c97ee8..6c74b2b 100644
--- a/src/store/printeragent/updateState.js
+++ b/src/store/printeragent/updateState.js
@@ -43,3 +43,4 @@ export default function updateState(provider) {
     return shape(updated.rows[0]);
   };
 }
+