# Contact and address book APIs for AI agents (slim) > 3 contacts & address books ranked by the Anchor benchmark. Leader Google People API (B). APIs that read and update a person's own contacts and address book, search people they know and keep contact records in sync across accounts. Compared on read and write coverage, search, sync tokens, OAuth scopes and limits. - Full: https://www.anchorterminal.com/categories/contacts.md (~1,500 tokens) · this version ~330 tokens · JSON https://www.anchorterminal.com/categories/contacts.json · canonical https://www.anchorterminal.com/categories/contacts - Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-14 - Tools: 3 · agent-ready (BB+): 0 · accept x402: 0 · JSON: https://www.anchorterminal.com/api/v1/tools.json · by capability: https://www.anchorterminal.com/api/v1/capabilities.json - Capabilities: contacts.read, contacts.write, contacts.search, contacts.sync, contacts.groups | # | Tool | Grade | Score | Confidence | x402 | Auth | Where | Slim | | --- | --- | --- | --- | --- | --- | --- | --- | --- | | 346 | Google People API | B | 65.2 | medium | no | OAuth | hosted | https://www.anchorterminal.com/tools/google-people-api.min.md | | 369 | Microsoft Graph People and Contacts API | B | 64.6 | medium | no | OAuth | hosted | https://www.anchorterminal.com/tools/microsoft-graph-people.min.md | | 966 | ContactsPlus | E | 42.4 | medium | no | OAuth | hosted | https://www.anchorterminal.com/tools/contactsplus.min.md |