Connect LetSign to OpenAI Codex and your agent drafts the proposal, the pricing options and the contract right from your terminal - then stages it for your review. Your client opens one link, picks a plan, signs and pays into your own Stripe.
Codex does the thinking, LetSign does the contracting, Stripe does the collecting. You stay in the loop exactly once - at send time.
No SDK, no webhooks, no integration project. The whole setup is one config entry, one Stripe connection and one prompt.
In ~/.codex/config.toml, add an [mcp_servers.letsign] table with a url entry pointing at the LetSign remote MCP endpoint. Codex connects over streamable HTTP, and both bearer token and OAuth auth are supported. Even faster: one-click install from Codex at app.letsign.ai. One qualifier: this is for the local Codex CLI; Codex cloud does not support remote MCP server placement.
In the LetSign app, connect your own Stripe account once. From then on every payment - one-off, subscription, or save-card-on-file - is collected through your Stripe and lands in your account. LetSign never holds your money.
Talk to Codex in your terminal the way you would brief a colleague. One proven opener:
"Draft the retainer proposal for Meridian Consulting from the notes in ./meetings/meridian-call.md - three tiers, the middle one at the number we discussed - and stage it for my review."
Codex stages the proposal; nothing sends itself. You read it, tweak anything you like (a discount, net-60 terms, a different tier), and press send. The human send-gate is a feature, not a limitation.
Your client opens one public link, chooses between the plans you offered (conditional pricing built in), verifies their email, signs a binding e-signature and pays through your Stripe - in a single sitting. Remember: the sender never signs. The client does.
Prefer Anthropic's terminal agent? The same stack runs in Claude Code. Working in a chat window instead of a CLI? There is a Claude playbook too.
Codex drafts the whole proposal with up to several plans your client can choose from - three tiers, optional add-ons, the works - straight from your notes and repo context.
"Has Meridian signed yet?" Codex checks proposal status through the MCP: opened, plan picked, signed, paid - without you opening a dashboard.
Client asks for net-60 or a 10% discount? Tell Codex, and it updates the terms and restages the proposal for your review.
One-off invoices, subscriptions, or save-card-on-file - collected through your own Stripe account at signature time, not weeks later.
And everything Codex does here, you can also do by hand. Every proposal, template and setting is fully editable in the LetSign app - full parity with the MCP. That two-way door is the essence of an agent-native contract: your agent and you work on the same object, and neither is a second-class citizen.
Yes. The Codex CLI reads MCP servers from ~/.codex/config.toml: add an [mcp_servers.letsign] table with the LetSign MCP url and Codex connects over streamable HTTP, with bearer token or OAuth auth supported. One qualifier: this applies to the local Codex CLI; Codex cloud does not support remote MCP server placement.
No. Adding the server is a short TOML entry, not an integration project, and the one-click install from Codex at app.letsign.ai writes it for you. You connect Stripe once inside LetSign, then everything else happens in plain conversation with Codex. And if you ever prefer to work by hand, every proposal and template is fully editable in the LetSign app.
The Free plan is $0 with a 0.20% fee on payments collected through it. The launch plan is $19 per month until October 1, 2026, and that price is locked until October 1, 2028; after launch the standard price is $49 per month. Paid plans pay 0% on payments up to $20,000 per month, then 0.05% above that.
You do. Codex drafts and stages the proposal, but nothing sends itself: a human reviews and presses send. And the sender never signs. Your client opens the link, picks a plan, verifies their email, signs a binding e-signature and pays through your Stripe.
Add the config entry, connect Stripe, and let Codex stage the next proposal for your review.
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