Attio Upgrade & Migration

Overview

Attio has two API generations: v1 (legacy, deprecated) and v2 (current). This skill covers the v1-to-v2 migration, community SDK upgrade paths, and how to detect and adapt to API changes since Attio does not publish a traditional SDK changelog.

V1 to V2 Migration Reference

Endpoint Changes

Operation	V1 Endpoint	V2 Endpoint
List objects	GET /v1/objects	GET /v2/objects
Query records	GET /v1/objects/{id}/records	POST /v2/objects/{slug}/records/query
Create record	POST /v1/objects/{id}/records	POST /v2/objects/{slug}/records
Get record	GET /v1/objects/{id}/records/{rid}	GET /v2/objects/{slug}/records/{rid}
List entries	GET /v1/lists/{id}/entries	POST /v2/lists/{slug}/entries/query
Create webhook	POST /v1/webhooks	POST /v2/webhooks
Search	N/A	POST /v2/records/search

Key Differences

Aspect	V1	V2
Identifiers	UUIDs only	Slugs (preferred) or UUIDs
Record query	GET with query params	POST with JSON body (filters, sorts)
Filtering	Basic query params	Rich operators ($eq, $contains, $gt, $and, $or)
Pagination	page + per_page	limit + offset or cursor-based
Webhook payloads	Custom format	Consistent with v2 response shapes
Webhook filtering	None	Event-type and attribute-level filters

Step 1: Update Base URL

// Before
const BASE = "https://api.attio.com/v1";

// After
const BASE = "https://api.attio.com/v2";

Step 2: Migrate Record Queries

// V1: GET with query params
const v1 = await fetch(
  `${BASE}/objects/${objectId}/records?page=1&per_page=50`,
  { headers: { Authorization: `Bearer ${token}` } }
);

// V2: POST with filter body, using slug instead of UUID
const v2 = await fetch(
  `${BASE}/objects/people/records/query`,
  {
    method: "POST",
    headers: {
      Authorization: `Bearer ${token}`,
      "Content-Type": "application/json",
    },
    body: JSON.stringify({
      filter: {
        email_addresses: { email_address: { $contains: "@example.com" } },
      },
      sorts: [{ attribute: "created_at", field: "created_at", direction: "desc" }],
      limit: 50,
      offset: 0,
    }),
  }
);

Step 3: Update Record Creation

// V1: values as flat key-value pairs
const v1Body = {
  name: "Ada Lovelace",
  email: "ada@example.com",
};

// V2: values nested under data.values, always arrays
const v2Body = {
  data: {
    values: {
      name: [{ first_name: "Ada", last_name: "Lovelace", full_name: "Ada Lovelace" }],
      email_addresses: ["ada@example.com"],
    },
  },
};

Step 4: Migrate Webhooks from V1 to V2

// V1 webhook event types
"object.record.created"

// V2 webhook event types
"record.created"
"record.updated"
"record.deleted"
"record.merged"
"list-entry.created"
"note.created"
"task.created"
// ... plus filtering support

V2 webhooks support event filtering to reduce volume:

await client.post("/webhooks", {
  target_url: "https://yourapp.com/webhooks/attio",
  subscriptions: [
    {
      event_type: "record.updated",
      filter: {
        // Only trigger for updates to the "stage" attribute on deals
        $and: [
          { object: { $eq: "deals" } },
          { attribute: { $eq: "stage" } },
        ],
      },
    },
  ],
});

Community SDK Migration

Since there is no official Attio SDK, you may be using community packages:

attio-js (most popular community SDK)

# Check current version
npm list attio-js

# Upgrade
npm install attio-js@latest

// attio-js uses the v2 API natively
import { AttioClient } from "attio-js";

const client = new AttioClient({ accessToken: process.env.ATTIO_API_KEY });
const people = await client.records.query("people", { limit: 10 });

Direct fetch (recommended for control)

No upgrade risk -- you control the endpoint URLs directly. See attio-sdk-patterns for a typed wrapper.

Detecting API Changes

Attio does not publish a traditional changelog for the REST API. Monitor for changes:

// Save the OpenAPI spec hash and check periodically
import crypto from "crypto";

async function checkForApiChanges(): Promise<boolean> {
  const spec = await fetch("https://docs.attio.com/openapi.json").then(r => r.text());
  const hash = crypto.createHash("sha256").update(spec).digest("hex");

  const previousHash = await readStoredHash(); // From file or DB
  if (previousHash && hash !== previousHash) {
    console.warn("Attio OpenAPI spec changed! Review for breaking changes.");
    await storeHash(hash);
    return true;
  }
  await storeHash(hash);
  return false;
}

Migration Checklist

[ ] Base URL updated to /v2
[ ] Object references use slugs instead of UUIDs where possible
[ ] Record queries migrated from GET to POST with filter body
[ ] Record creation uses data.values wrapper with arrays
[ ] Webhook subscriptions recreated with v2 event types
[ ] Webhook handlers updated for v2 payload format
[ ] Pagination migrated from page/per_page to limit/offset
[ ] Error handling updated for v2 error response format
[ ] Tests updated and passing against v2 endpoints
[ ] OpenAPI spec monitoring configured for future changes

Error Handling

Migration issue	Symptom	Fix
Old v1 URL	404 on all calls	Update base URL to /v2
UUID instead of slug	404 on object endpoints	Use api_slug from GET /v2/objects
Flat values (v1 format)	422 validation error	Wrap in { data: { values: { ... } } }
Old webhook event types	Webhook never fires	Recreate with v2 event types
Old pagination params	Ignored, only first page returned	Switch to limit + offset

Resources

• Attio REST API Overview
• Attio OpenAPI Spec
• Attio Slugs and IDs
• attio-js on GitHub

Next Steps

For CI integration during upgrades, see attio-ci-integration.