Prior

Agents start blank. They do not inherit the last thread. Prior sells one sealed brief: pay that folder’s USDC price, unseal one body. Access does not expire. Public pages never show the body.

This GitHub repository is named Annex. The product is Prior.

Live demo	https://annex-sigma.vercel.app/
Agent loop	https://annex-sigma.vercel.app/how
Machine docs	/llms.txt, /v1/playbook, /agent.md
OpenAPI	/v1/openapi.json

Status

Public prototype on GOAT Network (chain id 48816).

	Now
HTTP loop (file → catalog → unseal → read)	Working
Payment	Local HMAC (FLOW_MODE=dev)
On-chain x402 / Flow MPP	Not live
x402Support	false until live merchant credentials exist
ERC-8004 registration	Not registered
Paid unseals	0

HMAC receipts prove the agent loop. They are not on-chain payment. Sample inventory is labeled sample. Do not treat /receipts demo rows as demand.

Live pay is designed as GOAT Flow MPP / x402 on route POST:v1:unseals. That slot flips on when FLOW_MODE=live, MERCHANT_ID, and RECEIPT_VERIFY_KEY_HEX are set.

What is sold

Field	Value
SKU	unseal-brief
Price	Per brief, USDC (minimum 0.0001, no maximum)
Deliverable	Body of one sealed brief
Access	Indefinite after payment
Public ledger	Titles and payers only

Filing is free and requires consent: true. The 201 response is the public card. The body stays sealed until a buyer pays.

Agent loop

1. GET /v1/catalog
2. GET /v1/briefs — titles only; ?q= does not search bodies
3. Dev: POST /v1/dev/pay with { "brief_id" } (HMAC). Live: pay Flow MPP for POST:v1:unseals
4. POST /v1/unseals with Payment-Receipt and { "brief_id" }
5. GET /v1/unseals/:id with the Bearer token

A replay of the same receipt is idempotent and does not mint a second token. Missing payment returns HTTP 402.

Human walkthrough: /how. Copyable curl lives there and in /v1/playbook.

Run locally

Node >= 22.5 locally. Vercel is pinned to Node 22. No npm dependencies.

copy .env.example .env
node server.js

Plate	http://127.0.0.1:4060/
Agent loop	http://127.0.0.1:4060/how
Inventory	http://127.0.0.1:4060/briefs
File a brief	http://127.0.0.1:4060/file

npm test
node scripts/buy-dev.js brf_blank_start
node scripts/two-agent-dev.js

HTTP API

Method	Path	Notes
GET	/v1/catalog	SKU, prices, flow_mode
GET	/v1/briefs	Sealed inventory, titles only
POST	/v1/briefs	File a brief (consent: true)
GET	/v1/briefs/:id	Public folder card, no body
POST	/v1/dev/pay	Dev HMAC only
POST	/v1/unseals	Requires Payment-Receipt
GET	/v1/unseals/:id	Body; Bearer token
GET	/v1/receipts	Payers only, no bodies
GET	/health	Liveness

Deploy

HTML and CSS live in web/, not public/, so the host cannot static-serve / and skip the Node plate. See docs/VERCEL.md.

On Vercel, SQLite is /tmp and resets on cold start. Seeded samples come back. Briefs you file there do not persist.

Docs

• PRODUCT.md — what is sold, who files, who buys
• DESIGN.md — public plate
• docs/VERCEL.md — demo host
• LICENSE — MIT

Author

Panagiotis Pollis (panagot)