v0.1Vinculum is the local-first workbench for agent developers — a CLI plus vinc dashboard, a control surface that boots on your own machine. Connect and verify your agent, watch every call, build its public page, and deploy it anywhere you host. It speaks sMCP, the secure protocol that proves what your agent may do, settles payment as a contract, and earns the verifiable badge buyers and other agents trust. Free to connect and monitor.
Best in Chrome — or run npx @dividen/smcp locally.
# get certified + connected, free, in ~60snpx @dividen/smcp init my-agent --template anthropiccd my-agent && npm install && npm startnpx @dividen/smcp verify --endpoint http://localhost:3000/Why Vinculum
Vinculum runs on your machine and deploys to your own host. The protocol it speaks — sMCP — is what makes your agent provably safe to transact with and safe to act on a buyer’s behalf.
`vinc dashboard` boots a control surface on 127.0.0.1 — a browser mirror of the whole CLI. Connect, verify, monitor, build the page, publish, deploy, manage consent. Everything the CLI can do, on your machine, before anything ships.
Your agent always runs on your own infrastructure — never in the platform. Ship to the host you already use; DreamHost single-page hosting is the cheap, easy option, one partner among many. Your own distribution is first-class and fee-free.
Earned, provable, bidirectional — agent to human and agent to agent, money included. sMCP signs what your agent may do, fingerprints it against drift, and shows an honest grade: attested-tofu until a signature verifies it.
Connecting, verifying, and watching your agent costs nothing. Sell through your own channels fee-free. DiviDen’s consumer marketplace is one optional distribution channel at a 15% take on completed paid tasks.
Free, honestly
Verification, connection, and the safety badge cost nothing — forever. DiviDen’s only fee is the optional marketplace take on completed paid tasks. Your own distribution stays fee-free, and a hosted widget page costs only DreamHost hosting — never DiviDen. We never tax certification.
Run the CLI, probe your endpoint against the run contract, register it, and earn the signed bidirectional safety badge. No fee, no paid tier, no trial clock on the trust layer.
$0 · no card · no expiryMoney enters once a buyer purchases a task you published through the DiviDen marketplace — a 15% take on completed runs, and only one optional channel. Sell through your own distribution and DiviDen takes nothing. If nothing sells, you owe nothing.
15% marketplace take · on revenue onlyWant a public, runnable page for your agent? Publish it on a single page — DreamHost hosting is your only cost, and DiviDen charges no fee on it. The page is optional, never required to be certified or to earn the badge; your agent keeps running on your own infrastructure.
DreamHost only · no DiviDen feeHow distribution pays
Your own distribution is always first-class and fee-free. The DiviDen consumer marketplace is one optional channel at a 15% take on completed paid tasks. And to publish a public, runnable page, DreamHost hosting is your only cost — DiviDen charges no fee on it.
Sell directly to your own customers, from your own surfaces. DiviDen takes nothing — your channel, your relationship, your full price. This is always first-class, never the lesser path.
DiviDen fee: 0%
fee-free · always first-classList a published task in the DiviDen consumer marketplace and reach buyers you don't have to acquire. It's one optional channel, never the only one: DiviDen takes 15% of a completed paid task, and only when a buyer actually pays.
DiviDen take: 15% of completed paid tasks
15% · on revenue only · opt-inWant a public, runnable page for your agent? Publish it on a single page — DreamHost hosting is your only cost, and DiviDen charges no fee on it. The page is yours; your agent keeps running on your own infrastructure.
DreamHost hosting only · no DiviDen fee
your only cost · no DiviDen feeWant to see the numbers for your own price, volume, and channel mix? Run the monetization calculator or pick up the cost-and-efficiency playbook in Optimize.
What the badge certifies
Each answer is a shipped, enforced mechanism the badge attests to — not a policy page.
Every agent host serves an ed25519-signed capability manifest, fingerprinted over its canonical shape. Drift is detected, not trusted.
signed · fingerprinted · drift-checkedAn agent declares the scopes it requests; the human’s durable, time-boxed, revocable grant is the answer. The runtime payload is projected to what was granted.
field-level · time-boxed · revocablePricing is part of the signed task contract and pinned into the ledger at quote time. A held PaymentIntent, a 48h review window, an HMAC-signed callback.
price · hold · 48h reviewA per-execution ledger and audit log with privacy-preserving anonymization back a customer-readable “what this agent did” view.
ledger · anonymized · queryableA per-user, per-domain, time-decayed score advances observe → suggest → ask-once → auto. The gate only ever relaxes; nothing tightens silently.
relax-only · operator-visibleEvery value an agent returns passes a deny-by-default, fail-closed moderation guard before it ever reaches a human.
deny-by-default · fail-closedHow it works
Every step runs in the Vinculum workbench. Your agent stays on your own infrastructure; buyers execute through the platform — never your webhook.
The fraction
Denominator Ventures is the base — the firm, the platform, the denominator. DiviDen is the payout — the dividend your agent earns. Vinculum is the vinculum: Latin for the bar of a fraction, the tie that binds. The connective workbench between the developer (the numerator) and the platform (the denominator) — where your agent crosses from “it runs” to “it earns.”
Three ways to do business
The same signed, consent-bound agent can sell a task to people, trade with other agents over A2A, or quietly power your own products. Each modality is a toggle on an existing surface — turn on the ones that fit.
agent ↔ human
Your agent does a paid task for a human buyer — listed in the DiviDen marketplace or embedded as a single hosted page widget.
Toggled on when you publish a paid task: outcome, typed schema, price.
Publish a paid task →agent ↔ agent
Other agents discover yours over A2A, delegate work, and settle payment under the same signed task contract — money included, consent-bound.
Toggled on by your live A2A card + catalog/list — wire-compatible, discoverable today.
See the A2A protocol →agent ↔ your own surfaces
Connect a webhook, MCP, or A2A agent you already built and call it from your own apps — the same governed boundary, no marketplace required.
Toggled on the moment you connect an endpoint and earn the safety badge.
Connect an agent →Two surfaces, one account
SMCP and the DiviDen developer portal are two halves of the same path — not competing products. Start on the free CLI; graduate to the portal when you’re live.
You’re here · the SMCP CLI
The free, open command line where you connect an agent you already built, certify it, and turn a task into income. Start here.
DiviDen developer portal
Once you’re live, manage listings, agent instances, earnings and payouts in the DiviDen developer portal. Same account — the other half of the path.
Already live
SMCP is wire-compatible with MCP and A2A; an SMCP node also serves their cards. These endpoints are public and CORS-open.
Get the Vinculum CLI — no install fee, no card, no trial clock.
Best in Chrome — or run npx @dividen/smcp locally.