Get started

SimpleLocalize for AI agents

SimpleLocalize is a translation management platform for organizing localization keys and translations across languages and app environments. Product and engineering teams use it to manage software localization. Connect it once through Arc0, and your agent, or Claude, ChatGPT and Cursor, can use it through one MCP endpoint, limited to what each user approved.

Connect SimpleLocalizeSee the 14 actions ↓
Developer toolsAPI keyMCP + RESTsimplelocalize.io
AUDIT LOG · SIMPLELOCALIZEPOLICY: acme-support
09:41:07 · claude · u_8f2read
simplelocalize.list_activity
List Activity✓ allowed · 212ms
09:41:08 · claude · u_8f2read
simplelocalize.list_file_formats
List File Formats✓ allowed · 164ms
09:41:09 · claude · u_8f2write
simplelocalize.create_tag
Create Tag✓ approved · approved by user
09:41:12 · claude · u_8f2destructive
simplelocalize.delete_tag
Delete Tag✕ blocked · policy: deny
EVERY SIMPLELOCALIZE CALL, ON THE RECORD
01 · USE CASES

What agents do in SimpleLocalize.

01

Add a new translation key

Create a translation key for a new piece of interface text before translators fill it in.

02

Review before overwriting a translation

Check an existing translation's current value before setting a new one, to avoid overwriting reviewed copy.

03

Export translations for a release

Export the current translations in the format the app needs before shipping a release.

02 · ACTIONS

14 SimpleLocalize actions, graded by risk.

Every SimpleLocalize action is tagged read, write or destructive, so one policy covers the whole app and new actions inherit the right default.

read

7

Look things up. Allowed by default.

  • simplelocalize.list_activity
    List Activity
  • simplelocalize.list_file_formats
    List File Formats
  • simplelocalize.list_translations
    List Translations
  • simplelocalize.get_project_context
    Get Project Context
  • simplelocalize.get_translation_key
    Get Translation Key
  • simplelocalize.list_translation_keys
    List Translation Keys
  • simplelocalize.export_translations
    Export Translations

write

5

Create and change things. Allow, or ask the user first.

  • simplelocalize.create_tag
    Create Tag
  • simplelocalize.create_translation_key
    Create Translation Key
  • simplelocalize.create_translation_keys
    Create Translation Keys
  • simplelocalize.set_translation
    Set Translation
  • simplelocalize.set_translations
    Set Translations

destructive

2

Delete, cancel or archive. Ask first, or deny outright.

  • simplelocalize.delete_tag
    Delete Tag
  • simplelocalize.delete_translation_key
    Delete Translation Key
03 · HOW IT WORKS

SimpleLocalize in three steps.

  1. 01Your users connect SimpleLocalizeThey add their SimpleLocalize api key on Arc0 Connect, under your brand. It goes straight into the vault.
  2. 02You set the rulesReads run, writes like “create Tag” can wait for the user, and “delete Tag” can be denied outright.
  3. 03Any agent can actYour agent calls SimpleLocalize through the Arc0 SDK or MCP, and so can Claude, ChatGPT and Cursor. Every call lands on the audit log.
POLICY.TS
await arc0.policies.set('simplelocalize', {
  read: 'allow',
  write: 'ask',        // create_tag
  destructive: 'deny',  // delete_tag
})

# Claude Code: the same connection, one URL
$ claude mcp add --transport http arc0 \
    https://mcp.arc0.ai/u/u_8f2
04 · AUTH AND DATA

How SimpleLocalize connects.

Users add their SimpleLocalize api key on Arc0 Connect. It is encrypted in the vault, never shown to the model, and each user can rotate or revoke it at any time.

The same SimpleLocalize connection serves your agent over MCP and your own backend over REST and the proxy, so a user connects once. How Arc0 handles credentials →

AUTH
API key
CREDENTIALS
Per-tenant encrypted vault
MODEL SEES
Results only, never credentials
AUDIT LOG
Every call, on every plan
05 · WORKS WITH

Use SimpleLocalize from any agent.

Claude
ChatGPT
Cursor
Codex
VS Code
OpenAI Agents SDK
Claude Agent SDK
Vercel AI SDK
Mastra
LangGraph
06 · RELATED

More developer tools apps.

GitHub896 actionsSupabase129 actions0CodeKit8 actionsAbly25 actionsAbstract3 actionsAddressfinder17 actionsAddresszen2 actionsAlchemy36 actions
ALL DEVELOPER TOOLS APPS →
07 · FAQ

SimpleLocalize and Arc0, answered.

Q01

Can I use SimpleLocalize with Claude, ChatGPT or Cursor?

Yes. Connect SimpleLocalize to Arc0 once, then add your Arc0 MCP URL to Claude, ChatGPT, Cursor, Claude Code or any other remote-MCP client. Each assistant only gets the SimpleLocalize actions you allow.

Q02

How do users connect SimpleLocalize?

Users add their SimpleLocalize api key on Arc0 Connect. It is encrypted in the vault, never shown to the model, and each user can rotate or revoke it at any time.

Q03

Which SimpleLocalize actions can my agent take?

14 in total: 7 read, 5 write and 2 destructive, such as “create Tag”. Your policies decide which of them each agent may call.

Q04

Can I stop my agent from deleting things in SimpleLocalize?

Yes. Actions like “delete Tag” are graded destructive. Set destructive actions to deny, or to ask so the user approves each one, and blocked calls still show up on the audit log.

Q05

Can my own backend call SimpleLocalize too?

Yes. The same SimpleLocalize connection is available over REST and through the Arc0 proxy, so your product and your agent share one connection per user.

Get started

Plug SimpleLocalize into your agent.

Your users connect SimpleLocalize once, under your brand. Your agent gets 14 actions behind your policies, with every call on the record.

Connect SimpleLocalizeBrowse all apps →

Free to build · MCP + REST · Audit log on every plan