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Fidel MCP server

55 operations0 webhooks

Card-linking API for linking consumer payment cards to programs and offers, exposing cards, transactions, programs, brands, locations, offers, and webhooks operations.

Use Fidel in Claude, ChatGPT, Cursor or another MCP client

Connect Fidel once in Corsair, then add one MCP address to your agent.

Connect Fidel
Setup steps for Claude, ChatGPT, Cursor and Claude Code

Building your own app on the Corsair SDK? Get API keys

Try Fidel with your agent

Connect Fidel, then paste this into Claude, ChatGPT or Cursor. For ideas from other apps, see the use cases.

Using Corsair, show me what you can do in Fidel on my account, then run one read-only example and show me the result.

Runs once, when you ask

Fidel tools and triggers

Tools are what your agent can do in Fidel through Corsair's MCP server. Triggers are the Fidel events a routine can start from.

Offers

  • Activate Offer On CardWrite

    Activate an offer on a linked card

    offers.activateOfferOnCard

  • Create OfferWrite

    Create an offer on Fidel

    offers.createOffer

  • Delete OfferDestructive

    Delete an offer from Fidel

    offers.deleteOffer

  • Link All Brand Locations To OfferWrite

    Link every location of a brand in a program to an offer

    offers.linkAllBrandLocationsToOffer

  • Link Location To OfferWrite

    Link a location to an offer

    offers.linkLocationToOffer

  • List Cards With Active OfferRead-only

    List the linked cards with an active offer

    offers.listCardsWithActiveOffer

  • List OffersRead-only

    List the offers of a program

    offers.listOffers

  • Retrieve Active Offer On CardRead-only

    Check whether an offer is active on a linked card

    offers.retrieveActiveOfferOnCard

  • Retrieve OfferRead-only

    Retrieve an offer by ID

    offers.retrieveOffer

  • Send Offer To BrandWrite

    Send an offer to its brand for approval; this notifies the brand and works only in the live environment

    offers.sendOfferToBrand

  • Unlink Card From OfferDestructive

    Deactivate an offer on a linked card and reset its usage

    offers.unlinkCardFromOffer

  • Unlink Location To OfferDestructive

    Unlink a location from an offer

    offers.unlinkLocationToOffer

Connect Fidel to Claude, ChatGPT or Cursor

  1. 1

    Connect Fidel in Corsair

    Add your Fidel API key once in Corsair. Corsair stores the credential encrypted and makes the Fidel API calls for your agent, so it never goes into a prompt or a config file. Connect Fidel

    If your link lets the agent add apps, you can skip this: it gives you a sign-in link the first time it needs Fidel. On a ChatGPT personal plan, connect Fidel here first.

  2. 2

    Add Corsair's MCP server to your agent

    Every client uses the same address:

    https://mcp.corsair.dev/mcp
    Open Customize → Connectors → Add custom connector, paste the address, then select Connect.

    Codex, Gemini CLI, VS Code, Zed and other clients with OAuth sign-in work the same way. Clients without it, such as GitHub Copilot's coding agent, use a link's own address and an API key. Setup for every client

  3. 3

    Sign in and choose what needs your approval

    Your client opens Corsair to sign in. Pick a link: the apps your agent can use and a mode that decides what it may do without asking. In the default Cautious mode, Fidel's read and write operations run right away and its 7 destructive operations wait for your approval. Strict mode asks before every write and refuses destructive operations, and Read mode allows reads only.

FAQ

Install corsair and @corsair-dev/fidel, add the Fidel plugin, and connect with an API key. Then call methods like corsair.fidel.api.brands.createBrand() from your app. Corsair keeps each tenant isolated.

Yes. Fidel requires an API key from your Fidel account or developer dashboard. Create credentials with access that matches what you automate, then paste them into Corsair or connect through managed auth in Hub.

Yes. One Corsair client can hit Fidel, GitHub, Notion, Stripe, and the rest. Trigger Fidel from a webhook, push updates to Slack, or chain actions across plugins. Same tenant context across integrations, plain TypeScript.

Teams use Corsair for card-linking API for linking consumer payment cards to programs and offers, exposing cards, transactions, programs, brands, locations, offers, and webhooks operations. Common builds include sync jobs, admin tooling, and agents that call Fidel APIs from your backend.

The SDK is open source. Self-host and you pay Corsair nothing for the integration layer. Hub bills for hosted auth and execution, not per Fidel API call. Hub has a generous free tier. For hobby projects you can probably run the whole thing on free. Paid plans start to matter with more tenants or heavier traffic.

We maintain @corsair-dev/fidel in the open repo. When Fidel ships API changes, upgrade the package. Your call sites stay typed. You should not need to rewrite the integration layer each time.

No. Corsair does not read your Fidel data or hold individual access credentials. Credentials stay in your database. API calls run on your instance. We do not store Fidel data on your behalf.

Yes. Add https://mcp.corsair.dev/mcp as a custom connector or MCP server in Claude, ChatGPT, Cursor, VS Code, Claude Code, Codex or any client that supports remote MCP servers with OAuth sign-in, then sign in to Corsair. On ChatGPT personal plans, custom servers currently get read tools only.

Yes. Put Fidel on a link in Strict mode and every write waits for your approval, while destructive actions are refused. The default Cautious mode asks only before the 7 destructive Fidel operations. You can change a link's mode at hub.corsair.dev/me.