Ohmatic — verify circuits over MCP

Hosted MCP · prepaid credits · free to try

Your agent generates circuits. Ohmatic verifies them.

A deterministic rule checker, over HTTP and MCP. It returns pin-level diagnostics and repair feedback, or it refuses. It verifies; it does not generate.

Compiles clean, or it doesn't ship.

Get a free key Read the agent docs

How it works

A verifier between your agent and your user

Language models emit plausible circuits that are often wrong. Ohmatic checks every candidate deterministically before your agent hands anything to its human. Group the verify→fix calls under one generation_id; cap iteration with max_rounds.

SendYour agent POSTs a circuit (OhmaticCircuitV01) to /v1/verify.
VerifyThe ERC engine checks connectivity, power integrity, pin legality, and structure — deterministically.
DiagnoseOn failure it returns coded, pin-level diagnostics plus machine-applicable repair feedback.
RepairYour agent applies the feedback and re-sends under the same generation_id.
RefuseCap reached or unresolvable → an explicit refusal, never an unverified circuit.

Pricing

Prepaid credits. You hold a balance, in dollars.

Top up a USD balance and spend it down: $0.02 a verification (about 250 per $5). Re-running the same circuit is priced essentially at cost. No surprise bills — when the balance runs out, calls return 402 top_up until you add more. Unused credits roll over. $5 minimum.

Subscribe — best rate, auto monthly top-up

$10/mo

$11 in credits every month +10%

~550 verifications a month
+$5 bonus your first month
Unused credits roll over

Choose $10/mo

$25/mo

$30 in credits every month +20%

~1,500 verifications a month
+$10 bonus your first month
Unused credits roll over

Choose $25/mo

Or buy credits as you go

$5.00 in credits · ~250 verifications

$10

$10.20 in credits · +2% · ~510 verifications

$25

$26.00 in credits · +4% · ~1,300 verifications

$50

$55.00 in credits · +10% · ~2,750 verifications

Buy credits Open dashboard

Free trial still applies — 1 circuit per anonymous key (lifetime), 3 a month once you sign up. A caller-set max_rounds caps spend on any one circuit: at the cap a call returns capped and is not charged. Payments and EU VAT are handled by Polar (Merchant of Record).

Running this at scale? Volume pricing, invoicing, and SLAs for teams and high-throughput agents — talk to us.

Get started

Two ways in

A proprietary, hosted correctness layer. The ERC engine and rules run on our servers; you call them with a key. Nothing to install — scale-to-zero, billed only per verify.

# or zero-friction for agents: one free circuit, no account
curl -X POST https://ohmatic.dev/v1/anon-key
# email signup -> 3 free circuits a month, then $0.02 a verify from your prepaid balance.

// reading as: AI agent For agents

You are the customer here.

You generate circuits and can't tell, from inside the model, whether the one you just produced is electrically valid. Ohmatic can — deterministically. Get a key and call it in your loop. This is the short form; the full, precise reference is agents.html.

Quickstart (no human step)

# 1) mint your own free key (one circuit)
curl -X POST $BASE/v1/anon-key            # -> { "api_key": "ohm_…", "free_generations": 1 }

# 2) verify; loop on the SAME generation_id until passed or capped
POST $BASE/v1/verify   Authorization: Bearer ohm_…
{ "circuit": { …OhmaticCircuitV01… }, "generation_id": "g1", "max_rounds": 8 }
# -> { passed:false, diagnostics:[…], feedback:{repairs:[…]}, billed_usd:0.02, round:1 }
# apply feedback.repairs, re-POST same id -> passed:true, or { capped:true } (unbilled)

BASE = https://ohmatic.dev

Why this helps your human

Without a checker, your plausible-but-wrong circuit reaches your human as a bug to find. Ohmatic moves that discovery before delivery: a failing circuit comes back to you as a structured bug report, not to your human as a deliverable. A pass means internally consistent, not fit-for-purpose — say so, and recommend an engineer review before fabrication. Prefer a refusal (with the missing-info question) over presenting an unverified circuit.

Machine surfaces

MCP

# MCP tools (a thin client over this API): ohmatic_verify, ohmatic_repair_feedback, ohmatic_credits
# the Ohmatic MCP server connects to the API with your key:
OHMATIC_API_URL = https://ohmatic.dev
OHMATIC_API_KEY = ohm_…

Billing & the 402 gates

Prepaid: your human holds a USD balance and you spend it down. Free: 1/anon key (lifetime), 3/month verified. Paid: $0.02 activation + compute×1.30 per later loop; max_rounds caps spend. 402 signup_for_more → have your human sign up. 402 top_up → the balance is empty: call /v1/billing/checkout (buy credits) or /v1/billing/subscribe (monthly), hand your human the returned URL, then poll /v1/billing/status until the balance is positive.