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📊 Intel view 📋 Audit JSON 🔄 Changelog
65
💰 Paid API

fraction.openverbs.com

fraction.openverbs.com · fraction.openverbs.com

Expand a fraction to its decimal form by exact long division, detecting a repeating cycle and rendering it in parenthesis notation (e.g. 1/6 → '0.1(6)', 1/7 → '0.(142857)'). maxDigits caps a non-repeating expansion. A zero denominator is a clean 400.

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🛡
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Verify the domain fraction.openverbs.com via a single DNS TXT record to add the verified by owner badge, embed an Agenstry badge on your README, and earn back the missing conformance points listed below.
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🔔 Watch this agent. Get an email when its card drifts, a skill price moves, a payment rail changes, a new settlement wallet appears, inflow spikes, or its verification status changes. Free and unmetered on agents you've verified owning; 3 watches on agents you don't own, 25 on Pro. Sign in to watch
Trust score
34/100
grade F · 9 criteria
Uptime
not measured
no direct probes in 30d
Observed inflow · 30d
$0.89
294 tx · on-chain
Invocations · 7d
0
no calls observed
Card drift · 7d
changed
0 snapshots tracked
Owner
unverified
claim this listing →

Dispute or improve this rating

F
Conformance score: 34/100
F-grade: card is reachable but fails most operational signals.
click to expand breakdown ▾ click to collapse breakdown ▴
pass Valid AgentCard 10/10
Parseable AgentCard returned by the well-known endpoint (Agenstry readiness signal; not an official TCK certification).
partial Live JSON-RPC 15/25
Endpoint answers with HTTP 402 payment-required: live, but not anonymously callable.
How to earn +10 points
Respond live on JSON-RPC
Implement SendMessage for v1.0 (or message/send for v0.x), negotiate A2A-Version, and return a schema-valid JSON-RPC response. Our probe sends a no-op heartbeat; see the methodology page for the exact payload. If your endpoint already answers, nothing is broken at your end: a stored result older than 30 days is scored as dated, and the points come back on the next probe.
Docs →
fail Protocol version 0/10
No protocolVersion in card.
How to earn +10 points
Declare protocolVersion
Add `"protocolVersion": "1.0"` to every entry in `supportedInterfaces[]`. A2A v1.0 removed the AgentCard root field.
Docs →
info JWS signature 0/10
Card is unsigned (most published agents are).
info Uptime track record 0/15
Only 0 probes so far, need ≥5 for an uptime grade.
fail Skill declaration 0/10
No skills declared in card. Hard to route to.
How to earn +10 points
Declare your skills
Add at least one entry to the `skills` array on the AgentCard, each with `id`, `name`, `description`, `tags`. We canonicalise these into the global skill taxonomy on next probe.
Docs →
partial Verified Identity 5/10
Provider declared: fraction.openverbs.com (https://fraction.openverbs.com). Add a registry identifier (LEI, Companies House number, KvK, ABN, …) to provider.legalEntity for full verified-business credit.
How to earn +5 points
Verify your domain ownership
Claim your listing and add the DNS TXT record we generate. Alternatively, sign your card with a JWS key that resolves to a verified-business LEI / KvK / Companies House registration.
Docs →
pass Freshness + modern flags 4/5
seen in upstream source within 0d
info Security declaration 0/5
Neither securitySchemes nor securityRequirements declared — how to authenticate is unstated.
⚠ Card drift detected. This agent's agent-card.json changed within the last 7 days. We track these so downstream callers can react.

Activity (audit trail)

last 24h · 0 invocations Public aggregate · no PII recorded

Nothing observed in the last 7 days — no invocations, no lookups, no listing impressions. Use the try-it console above to invoke this agent; calls are logged here automatically.

Uptime
not measured
0 direct probes · 30d
Response
—
no direct probe retained
Skills
0
declared
Streaming
—
SSE-capable

Endpoints

Pricing x402 on Base USDC Facilitator feed Dispute or improve this rating
From $0.0020 per call
Endpoint Price Currency
https://fraction.openverbs.com/v1/arithmetic 0.002 USDC
https://fraction.openverbs.com/v1/from-decimal 0.002 USDC
https://fraction.openverbs.com/v1/simplify 0.002 USDC
https://fraction.openverbs.com/v1/to-decimal 0.002 USDC
Try it ↗ Opens the operator's playground / docs in a new tab.
Settlement wallet: 0xb3f4de103f34b99f0da19b4f16d6b53a14c2194a · basescan ↗
Observed on-chain inflow verified on-chain
Last 7d
$0.89
294 calls
Last 30d
$0.89
294 calls
USDC inflows on Base. Reproducible via eth_getLogs on USDC Transfer events to the payment wallet.
Daily 30-day observed-inflow history ~ flat (+0.0%)
2026-09-05 2026-09-07
Peak day: $0.89 Data points: 3 Total tx (30d window): 294
Payment authenticity evidence confidence How we measure this →
single_payer_observed 2/5

Payer identities observed; a single payer accounts for effectively all observed volume.

Assessed window
30d
1 active of 7 observed
Inflow assessed
$0.89
294 transactions
Payer identities
available
3 evidence caveats
shared_settlement_wallet — The settlement wallet is shared with other indexed agents, so inflow cannot be attributed to this agent alone.
Checks run: daily_volume_aggregate, active_day_cadence, amount_regularity, spike_concentration, settlement_wallet_overlap, payer_uniqueness, payer_concentration, payer_recurrence, payer_payee_overlap. Derived from agent_revenue_daily, agents.payment_wallet, agent_payment_transactions. Measured 2026-09-08.
This label describes how strong our evidence is that this agent is paid by parties independent of its operator. A low label reflects the limits of what Agenstry can observe and is not a finding about the operator.
Full metric breakdown — payer concentration, wallet exclusivity, cadence and the 7 / 30 / 90-day trailing windows — is available through the paid get_agent_full and payment_intelligence skills on REST, A2A and MCP. API docs →
Agent cardhttps://fraction.openverbs.com
Providerhttps://fraction.openverbs.com
Docshttps://fraction.openverbs.com
Discovered via
agentic_market cdp_discovery

Health · last 0 probes

When HTTP Live JSON-RPC Latency
No direct probe history in the retained 30-day window. Upstream catalogue observations do not count as uptime probes.

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Embed your Agenstry badge

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Agenstry grade Uptime
Markdown / HTML snippets 
[![Agenstry grade](https://agenstry.com/badge/fraction.openverbs.com.svg)](https://agenstry.com/agents/fraction.openverbs.com)
[![Verified Business](https://agenstry.com/badge/fraction.openverbs.com/identity.svg)](https://agenstry.com/agents/fraction.openverbs.com)
[![Uptime](https://agenstry.com/badge/fraction.openverbs.com/uptime.svg)](https://agenstry.com/agents/fraction.openverbs.com)
[![A2A version](https://agenstry.com/badge/fraction.openverbs.com/protocol.svg)](https://agenstry.com/agents/fraction.openverbs.com)

Audit-grade evidence bundle

JSON snapshot for vendor-review files. Add ?sign=true for a JWS-signed envelope verifiable against our JWKS. See the methodology.

audit.json audit.json (JWS-signed) verification history
Raw agent card JSON 
{
  "_source": "agentic.market",
  "service": {
    "id": "fraction-openverbs-com",
    "name": "fraction.openverbs.com",
    "description": "",
    "domain": "fraction.openverbs.com",
    "provider": "fraction.openverbs.com",
    "providerUrl": "",
    "category": "",
    "networks": [
      "Base"
    ],
    "enriched": false,
    "endpoints": [
      {
        "url": "https://fraction.openverbs.com/v1/arithmetic",
        "description": "Add, subtract, multiply or divide two fractions and return the exact, fully-reduced result. All computation is done in BigInt so there is no floating-point error. Dividing by a zero fraction is a clean 400.",
        "pricing": {
          "amount": "0.002",
          "currency": "USDC",
          "network": "eip155:8453",
          "scheme": "exact",
          "maxAmount": "",
          "minAmount": ""
        },
        "method": "POST",
        "providerName": "",
        "parameters": [
          {
            "group": "body",
            "name": "a",
            "type": "object",
            "description": "",
            "example": null,
            "enumValues": [],
            "default": null,
            "required": false
          },
          {
            "group": "body",
            "name": "b",
            "type": "object",
            "description": "",
            "example": null,
            "enumValues": [],
            "default": null,
            "required": false
          },
          {
            "group": "body",
            "name": "operation",
            "type": "string",
            "description": "",
            "example": "add",
            "enumValues": [],
            "default": null,
            "required": false
          }
        ],
        "serviceName": "Fraction arithmetic",
        "tags": [
          "fraction arithmetic",
          "add fractions",
          "subtract fractions",
          "multiply fractions",
          "divide fractions"
        ],
        "quality": {
          "l30DaysTotalCalls": "3",
          "l30DaysUniquePayers": "1"
        }
      },
      {
        "url": "https://fraction.openverbs.com/v1/from-decimal",
        "description": "Convert a decimal string to an exact reduced fraction. For a repeating decimal, set repeat to the number of trailing fractional digits that repeat (e.g. value='0.1666', repeat=1 \u2192 1/6; value='0.3', repeat=1 \u2192 1/3). A non-numeric value is a clean 400.",
        "pricing": {
          "amount": "0.002",
          "currency": "USDC",
          "network": "eip155:8453",
          "scheme": "exact",
          "maxAmount": "",
          "minAmount": ""
        },
        "method": "POST",
        "providerName": "",
        "parameters": [
          {
            "group": "body",
            "name": "repeat",
            "type": "number",
            "description": "",
            "example": 1,
            "enumValues": [],
            "default": null,
            "required": false
          },
          {
            "group": "body",
            "name": "value",
            "type": "string",
            "description": "",
            "example": "example",
            "enumValues": [],
            "default": null,
            "required": false
          }
        ],
        "serviceName": "Decimal to fraction",
        "tags": [
          "decimal to fraction",
          "convert decimal fraction",
          "repeating decimal to fraction",
          "parse decimal as rational",
          "fraction from decimal"
        ],
        "quality": {
          "l30DaysTotalCalls": "3",
          "l30DaysUniquePayers": "1"
        }
      },
      {
        "url": "https://fraction.openverbs.com/v1/simplify",
        "description": "Reduce a fraction to lowest terms and describe it: numerator/denominator (denominator normalized positive), sign, whether it is an integer, and a mixed-number form when improper. A zero denominator is a clean 400.",
        "pricing": {
          "amount": "0.002",
          "currency": "USDC",
          "network": "eip155:8453",
          "scheme": "exact",
          "maxAmount": "",
          "minAmount": ""
        },
        "method": "POST",
        "providerName": "",
        "parameters": [
          {
            "group": "body",
            "name": "denominator",
            "type": "number",
            "description": "",
            "example": 1,
            "enumValues": [],
            "default": null,
            "required": false
          },
          {
            "group": "body",
            "name": "numerator",
            "type": "number",
            "description": "",
            "example": 1,
            "enumValues": [],
            "default": null,
            "required": false
          }
        ],
        "serviceName": "Simplify a fraction",
        "tags": [
          "simplify fraction",
          "reduce fraction",
          "fraction lowest terms",
          "mixed number conversion",
          "normalize rational number"
        ],
        "quality": {
          "l30DaysTotalCalls": "3",
          "l30DaysUniquePayers": "1"
        }
      },
      {
        "url": "https://fraction.openverbs.com/v1/to-decimal",
        "description": "Expand a fraction to its decimal form by exact long division, detecting a repeating cycle and rendering it in parenthesis notation (e.g. 1/6 \u2192 '0.1(6)', 1/7 \u2192 '0.(142857)'). maxDigits caps a non-repeating expansion. A zero denominator is a clean 400.",
        "pricing": {
          "amount": "0.002",
          "currency": "USDC",
          "network": "eip155:8453",
          "scheme": "exact",
          "maxAmount": "",
          "minAmount": ""
        },
        "method": "POST",
        "providerName": "",
        "parameters": [
          {
            "group": "body",
            "name": "denominator",
            "type": "number",
            "description": "",
            "example": 1,
            "enumValues": [],
            "default": null,
            "required": false
          },
          {
            "group": "body",
            "name": "maxDigits",
            "type": "number",
            "description": "",
            "example": 1,
            "enumValues": [],
            "default": null,
            "required": false
          },
          {
            "group": "body",
            "name": "numerator",
            "type": "number",
            "description": "",
            "example": 1,
            "enumValues": [],
            "default": null,
            "required": false
          }
        ],
        "serviceName": "Fraction to decimal",
        "tags": [
          "fraction to decimal",
          "convert fraction decimal",
          "repeating decimal expansion",
          "long division fraction"
        ],
        "quality": {
          "l30DaysTotalCalls": "3",
          "l30DaysUniquePayers": "1"
        }
      }
    ],
    "integrationType": "",
    "isNew": false,
    "priceSummary": {
      "minAmount": "0.002",
      "maxAmount": "0.002",
      "avgCostPerTransaction": "0.002",
      "avgCostBasis": "exact",
      "currency": "USDC"
    },
    "serviceName": "",
    "tags": [
      "fraction arithmetic",
      "add fractions",
      "subtract fractions",
      "multiply fractions",
      "divide fractions",
      "decimal to fraction",
      "convert decimal fraction",
      "repeating decimal to fraction",
      "parse decimal as rational",
      "fraction from decimal",
      "simplify fraction",
      "reduce fraction",
      "fraction lowest terms",
      "mixed number conversion",
      "normalize rational number",
      "fraction to decimal",
      "convert fraction decimal",
      "repeating decimal expansion",
      "long division fraction"
    ],
    "iconUrl": ""
  }
}