# ShareThis

> ShareThis is a Palo Alto, California website-tools and audience-data company founded in 2007,
> operating since 2024 as a brand of Predactiv ("ShareThis, a Predactiv Company"). Its share,
> follow and reaction buttons are embedded across publisher sites via a single sharethis.js
> loader, and the resulting sharing behavior feeds the company's audience and targeting data
> products.

Generated by API Evangelist on 2026-08-27. Method: generated from probed ShareThis surfaces —
ShareThis does not publish its own /llms.txt (https://sharethis.com/llms.txt returns HTTP 404).

## What an agent can actually do today

- Call the Social Share Count API right now with no account, no key and no onboarding.
- Discover the full ShareThis MCP tool set anonymously; invoking a tool needs OAuth.
- Manage properties and button configurations over REST or MCP after authenticating.

## APIs

- [ShareThis Platform API](https://sharethis.com/platform-api/): REST management API for properties,
  app configurations, OAuth clients, audience pageviews and AI summaries. Base URL
  https://platform-api.sharethis.com/v2.0. OpenAPI 3.0.3 published at
  https://platform-api.sharethis.com/v2.0/openapi.json — 12 paths, 14 operations. Bearer JWT from
  POST /auth/login.
- [ShareThis Social Share Count API](https://sharethis.com/support/customization/social-share-count-api/):
  GET https://count-server.sharethis.com/v2.0/get_counts?url=<url>. No authentication. Returns
  per-network click and share counts, reaction counts and totals. Optional wd=true for the legacy
  wd.sharethis.com widget.
- [ShareThis MCP Server](https://sharethis.com/mcp/): remote Model Context Protocol server at
  https://mcp.sharethis.com. JSON-RPC 2.0 over POST to the host root. Nine tools. OAuth 2.1
  authorization-code with PKCE S256, scope mcp:tools.

## MCP tools

- sharethis_properties_create — create a property for the authenticated user
- sharethis_properties_list — list properties (read-only)
- sharethis_properties_get — get a property by ID (read-only)
- sharethis_properties_validate — validate property ownership via domain file
- sharethis_apps_upsert — create or update an app config for a property
- sharethis_apps_list — list apps configured for a property (read-only)
- sharethis_apps_get — get configuration for a specific app (read-only)
- sharethis_apps_delete — remove an app from a property (DESTRUCTIVE — the only tool ShareThis
  annotates destructiveHint:true, and it cannot be undone)
- sharethis_apps_liveview — show the live saved view of an app via the sharethis.js runtime

## Configurable components

Four app_id values are addressable through the API and MCP server: inline-share-buttons,
sticky-share-buttons, inline-follow-buttons, inline-reaction-buttons. The Privacy Policy Generator
and Consent Management Platform are install-only and not API-configurable.

## Authentication

- Platform API: bearer JWT obtained from POST /auth/login. No scopes; all-or-nothing on the account.
- MCP server: OAuth 2.1, authorization_code and client_credentials, PKCE S256 required, single
  scope mcp:tools. Discovery at https://mcp.sharethis.com/.well-known/oauth-authorization-server and
  /.well-known/oauth-protected-resource. A ShareThis account at https://platform.sharethis.com must
  exist first.
- Share Count API: none.

## Limits an agent should know about

- No published rate limits, no RateLimit-* or Retry-After headers, no 429 declared.
- Property count and OAuth client count are both capped; the numeric limits are NOT published and
  surface only as 403 errors after the fact.
- Maximum four app configurations per property.
- No pagination on any collection operation.

## Cautions

- No idempotency support. POST /properties/ and POST /oauth-clients are unguarded creates — a retry
  after a timeout can duplicate a property and permanently consume quota.
- Nothing is reversible. There is NO delete-property operation at all, domain verification cannot be
  undone, app upsert overwrites the previous config with no history, and deleting an app or an OAuth
  client is permanent. Confirm before any write.
- No status page (status.sharethis.com does not resolve), no changelog, no deprecation policy, no
  SLA, and no request-id header — a failed call cannot be correlated with support.
- Errors use a proprietary {code, data} envelope, not RFC 9457 problem+json.

## Documentation

- API docs: https://sharethis.com/api-docs/
- Platform API reference: https://sharethis.com/platform-api/
- MCP guide: https://sharethis.com/mcp/
- Support centre: https://sharethis.com/support/
- Blog: https://sharethis.com/blog/
- GitHub: https://github.com/sharethis-github
- Terms: https://sharethis.com/publisher-terms-of-use/
- Privacy: https://sharethis.com/privacy/

## Related

- Predactiv (parent brand) runs a separate, auth-gated MCP server at https://mcp.predactiv.com for
  the Predactiv Data Platform. Different product, same company. Sample agent code:
  https://github.com/sharethis-github/predactiv-mcp-python-samples

## Not published

ShareThis publishes no AsyncAPI, no webhooks, no GraphQL, no gRPC/Protobuf, no WSDL, no A2A agent
card, no security.txt, no sandbox environment, no CLI, and no first-party API client SDK in any
language. These are honest absences verified by probe, not gaps in this profile.