PayChasers MCP server for AI agents and assistants

Securely connect your AI agents and chatbots (Claude, ChatGPT, Cursor, etc) with PayChasers MCP or direct API to send payment reminders, list overdue invoices, update client accounts, and create follow-up sequences through natural language.

PayChasers logoPayChasers
Api Key

PayChasers automates payment reminders, client management, and follow-ups for overdue accounts. Helps reduce late payments and streamlines accounts receivable workflows.

7 Tools

Try PayChasers now

Type what you want done — sign in and watch it run live in the Tool Router playground.

TOOL ROUTER PLAYGROUND
PayChasers
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TOOLS

Supported Tools

Every PayChasers action and event your agent gets out of the box.

Create Chase

Create a payment chase and potentially send its initial reminder immediately.

Create Client

Create a persistent PayChasers client from a name, billing email, and notes.

Get Current User

Return the connected PayChasers account profile, plan, and default currency; use this to identify the account or check its tier.

List Chases

Return chases, optionally filtered by exact status and capped by a truncating limit; the API provides no continuation mechanism.

List Clients

Return all clients visible to the connected PayChasers account.

Mark Chase Paid

Irreversibly mark a chase as paid and stop its automated follow-ups.

Send Follow-Up

Immediately send one manual follow-up for a chase in the selected tone.

SETUP GUIDE

Connect PayChasers MCP Tool with your Agent

1

Install Composio

typescript
npm install @composio/core ai @ai-sdk/mcp @ai-sdk/openai
Install the Composio SDK and your agent framework
2

Create a session with MCP enabled

typescript
import { Composio } from "@composio/core";

const composio = new Composio();
const { mcp } = await composio.create("your-user-id", {
  toolkits: ["paychasers"],
  mcp: true,
});
Create a session scoped to PayChasers and read its MCP URL and headers
3

Connect your agent to the MCP server

typescript
import { createMCPClient } from "@ai-sdk/mcp";
import { openai } from "@ai-sdk/openai";
import { generateText, stepCountIs } from "ai";

const client = await createMCPClient({
  transport: { type: "http", url: mcp.url, headers: mcp.headers },
});

const { text } = await generateText({
  model: openai("gpt-5.6-sol"),
  tools: await client.tools(),
  prompt: "List overdue invoices older than 30 days",
  stopWhen: stepCountIs(10),
});

console.log(text);
await client.close();
Pass the session's MCP URL and headers to your agent and run a PayChasers request
SETUP GUIDE

Connect PayChasers API Tool with your Agent

1

Install Composio

typescript
npm install @composio/core @composio/openai openai
Install the Composio SDK, the OpenAI provider, and the OpenAI SDK
2

Create a Composio session

typescript
import OpenAI from "openai";
import { Composio } from "@composio/core";
import { OpenAIResponsesProvider } from "@composio/openai";

const composio = new Composio({ provider: new OpenAIResponsesProvider() });
const client = new OpenAI();

const session = await composio.create("your-user-id", { toolkits: ["paychasers"] });
const tools = await session.tools();
Initialize Composio with the OpenAI Responses provider and create a session scoped to PayChasers
3

Run PayChasers tools with your agent

typescript
let response = await client.responses.create({
  model: "gpt-5.6-sol",
  tools,
  input: [{ role: "user", content: "List overdue invoices older than 30 days" }],
});

while (response.output.some((o) => o.type === "function_call")) {
  const outputs = await composio.provider.handleToolCalls(session, response.output);
  response = await client.responses.create({
    model: "gpt-5.6-sol",
    tools,
    previous_response_id: response.id,
    input: outputs,
  });
}

console.log(response.output_text);
Send a request, execute the PayChasers tool calls through the session, and print the final answer

Why Use Composio?

AI Native PayChasers Integration

  • Supports both PayChasers MCP and direct API based integrations
  • Structured, LLM-friendly schemas for reliable tool execution
  • Rich coverage for reading, writing, and querying your PayChasers data

Managed Auth

  • Built-in OAuth handling with automatic token refresh and rotation
  • Central place to manage, scope, and revoke PayChasers access
  • Per user and per environment credentials instead of hard-coded keys

Agent Optimized Design

  • Tools are tuned using real error and success rates to improve reliability over time
  • Comprehensive execution logs so you always know what ran, when, and on whose behalf

Enterprise Grade Security

  • Fine-grained RBAC so you control which agents and users can access PayChasers
  • Scoped, least privilege access to PayChasers resources
  • Full audit trail of agent actions to support review and compliance

Rolling this out across your team?

Give your team centralized access control across every framework with Composio’s MCP Gateway.

EXPLORE MCP GATEWAY
FAQ

Frequently asked questions

Yes, PayChasers requires you to configure your own API key credentials. Once set up, Composio handles secure credential storage and API request handling for you.

Yes! Composio's Tool Router enables agents to use multiple toolkits. Learn more.

Yes. Composio is SOC 2 Type II compliant and is built to keep your PayChasers connection and credentials secure. OAuth tokens and API keys are encrypted, and sensitive customer data is protected at rest and in transit.

Composio also undergoes independent security testing and continuously monitors its systems for security threats. You can review the latest reports and policies in the Composio Trust Center.

Composio maintains and updates all toolkit integrations automatically, so your agents always work with the latest API versions.

Create the key in your PayChasers account settings, then paste it once on Composio's connection page. Composio stores it encrypted and uses it only for the PayChasers actions your agent runs. Nobody else in your workspace can read it, and you can revoke it inside PayChasers at any time.

When you connect a PayChasers account through Composio, every action runs under that account, so anything the agent creates, sends, or changes shows up in PayChasers as done by you. Keep an approval step in your prompt for actions with side effects, such as sending or deleting, and have the agent draft first.

Whatever the credentials you connect allow inside PayChasers. If PayChasers lets you scope a key to specific permissions, create a scoped one so the agent can only do what you intend. You can revoke the key inside PayChasers at any time.

Yes. Composio supports multiple connected accounts for the same app, and that works in Claude, ChatGPT, or any other assistant you connect through Composio. Give each PayChasers connection a name such as work or personal, and the assistant uses the one you mention in the request. Each account keeps its own credentials and nothing is merged.

The connection stops working the moment PayChasers rejects the old key. Create a new key in PayChasers and reconnect the account from the Composio dashboard or by asking your agent to reconnect PayChasers. Nothing else changes.

Composio's free Hobby plan includes 100,000 tool calls per month with no credit card, which covers most personal PayChasers use. Paid plans add higher limits and team features. Your PayChasers plan and its API limits still apply as usual.

Built-in connectors usually give one AI access to a limited set of apps. Many people use Composio because it lets their AI connect to more apps than it normally supports, or connect to multiple accounts for the same app (e.g. connect Claude to multiple PayChasers accounts).

With Composio, you connect PayChasers once and then use it across different AI assistants without setting it up separately in each one. Connect your apps to Composio once, then connect Composio to whichever AI you use, whether that's Claude, ChatGPT, Hermes, or your own custom assistant.

Start with PayChasers.It takes 30 seconds.

Managed auth, hosted MCP servers, and every PayChasers tool your agent needs.Free to start.

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