# Anrok vs Numeral

> Anrok scores 61.6 (C) on agent readiness against Numeral's 49.3 (D), and leads in 4 of 7 scored categories. Numeral leads on schema & documentation and maintenance & community. Both do tax calculate. Category scores, facts, verdicts and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/anrok-vs-numeral
- Markdown: https://www.anchorterminal.com/compare/anrok-vs-numeral.md (~2,200 tokens)
- Slim: https://www.anchorterminal.com/compare/anrok-vs-numeral.min.md (~680 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/anrok-vs-numeral.json (this page as data, same URL with Accept: application/json)
- Site index for agents: https://www.anchorterminal.com/llms.txt (full text: https://www.anchorterminal.com/llms-full.txt)
- API: https://www.anchorterminal.com/api/v1/index.json
- Updated: 2026-10-08

Anrok scores 61.6 (C) on agent readiness against Numeral's 49.3 (D), and leads in 4 of 7 scored categories. Numeral leads on schema & documentation and maintenance & community. Both do tax calculate.

- Anrok: grade C, 61.6/100, rank #361 of 722. Markdown https://www.anchorterminal.com/tools/anrok.md · JSON https://www.anchorterminal.com/api/v1/tools/anrok.json
- Numeral: grade D, 49.3/100, rank #611 of 722. Markdown https://www.anchorterminal.com/tools/numeral.md · JSON https://www.anchorterminal.com/api/v1/tools/numeral.json

## Which one, for what

### Anrok (C)

Good for: An agent working for a software or ecommerce seller that already uses Anrok and wants calculation, exemption certificates and filing status in one account.

Ahead on:
- Reliability, 88 against 25
- Security & auth, 59 against 47
- Payments & pricing, 15 against 10
- Transparency & trust, 54 against 45

Watch for: No self-serve signup. Starter is $100 per market a month through "Talk to us", and Custom is quoted by sales

### Numeral (D)

Good for: An agent working for a seller or platform that has a Numeral account and needs tax at checkout, committed transactions for filing, and read access to nexus, registrations and filings through MCP.

Ahead on:
- Schema & documentation, 87 against 71
- Maintenance & community, 60 against 47

Watch for: No status page, uptime SLA or numeric rate limit was found. The product page says rate limits can be removed on request


## Score by category

| Category | Weight | Anrok | Numeral | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 88 | 25 | Anrok +63 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 71 | 87 | Numeral +16 |
| Agent ergonomics | 13% (16.2 this run) | 70 | 71 | Numeral +1 |
| Security & auth | 14% (17.5 this run) | 59 | 47 | Anrok +12 |
| Payments & pricing | 10% (12.5 this run) | 15 | 10 | Anrok +5 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 47 | 60 | Numeral +13 |
| Transparency & trust | 7% (8.8 this run) | 54 | 45 | Anrok +9 |
| Negative events | ≤15 | 0 | 0 | |
| **Total** | | **61.6 · C** | **49.3 · D** | |

## Facts side by side

| Fact | Anrok | Numeral |
| --- | --- | --- |
| Kind | HTTP API | HTTP API |
| Vendor | Anrok, Inc. | Numeral Two, Inc. |
| Hosted endpoint | `https://api.anrok.com` | `https://api.numeralhq.com` |
| Transports | HTTP, Streamable HTTP | HTTP, Streamable HTTP |
| Auth | OAuth or key | API key |
| Pricing | Paid | Paid |
| x402 | no | no |
| Licence | Proprietary service under the Anrok SaaS Services Agreement. The OpenAPI file states "All rights reserved" | Proprietary service under Numeral's terms of service. The Go, Python and Node SDKs are Apache-2.0 |
| Tools exposed | 31 | 14 |
| Read-only variant documented | no | yes |
| llms.txt | yes | yes |
| Last release | 2026-10-06 | 2026-09-15 |
| Terms last updated | 2026-07-01 | no date given |
| Privacy policy last updated | 2026-07-01 | no document linked |
| Customer content may train models | not found in the text | not found in the text |
| Terms restrict automated access | yes | not found in the text |
| Terms restrict benchmarking | yes | not found in the text |
| Terms or service can change without notice | not found in the text | not found in the text |
| Arbitration or class-action waiver | not found in the text | yes |
| Popularity | none | 0 stars, 9 npm/wk, 19 PyPI/wk |

## Verdicts

**Anrok.** The public OpenAPI 3.1 spec covers 26 operations with typed error codes, and the remote MCP server uses OAuth 2.1 with six scopes and keeps voids, refunds and filing approval away from the model. Access needs a seller account arranged through sales, API keys carry no scopes, and no API changelog, SDK or subprocessor list was found.

**Numeral.** Docs are written for agents, with a public OpenAPI spec for 32 operations, Markdown pages, llms.txt and a remote MCP server whose 14 tools are read-only by default. No status page, numeric rate limit or SLA was found, the API ignores idempotency keys, and API access is sold on a custom plan after a demo.

## Before you call either

### Anrok

1. Send every call as a POST with a JSON body to https://api.anrok.com, including reads such as /v1/seller/products/list
2. Call createEphemeral for a quote and createOrUpdate only when the invoice is final. createOrUpdate saves the transaction for filing
3. Reuse the same transaction id on a retry. createOrUpdate overwrites by id, so a repeat doesn't create a second record
4. Expect transactionFrozenForFiling once a transaction is on a filed return. Negate it with createNegation and write a new id with a suffix such as :s2
5. On 429 wait the number of seconds in Retry-After. The default limit is 10 requests a second per seller account

### Numeral

1. Send `X-API-Version: 2026-03-01` on every call to `https://api.numeralhq.com`. Merchant, platform and certificate endpoints reject requests without it
2. Commit with a stable `reference_order_id`. On `REFERENCE_ORDER_ID_ALREADY_EXISTS` look up the existing transaction, because `Idempotency-Key` is ignored
3. Commit before the calculation's `expires_at`. If it has expired, calculate again and commit the new `calculation_id` with the original `reference_order_id`
4. Send `amount` as the line total in minor units to `/tax/calculations` and as the per-unit price to `/tax/platform/calculations`
5. Start with an `sk_test_` key. Certificate endpoints and MCP certificate tools are live only and answer `TESTMODE_NOT_SUPPORTED` or `live_mode_required`

## Questions

### Which is better for AI agents, Anrok or Numeral?

Anrok scores 61.6 (C) on agent readiness against Numeral's 49.3 (D), and leads in 4 of 7 scored categories. Numeral leads on schema & documentation and maintenance & community.

### Do Anrok and Numeral need an API key?

Anrok takes an API key or an OAuth sign-in. Numeral needs an API key.

### Can an agent call Anrok and Numeral without installing anything?

Yes. Anrok has a hosted endpoint at https://api.anrok.com and Numeral at https://api.numeralhq.com.


## For agents

- This comparison as JSON: https://www.anchorterminal.com/compare/anrok-vs-numeral.json, and with the fewest tokens: https://www.anchorterminal.com/compare/anrok-vs-numeral.min.md
- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {"a": "anrok", "b": "numeral"}`. From a terminal: `anchor compare anrok numeral`
- Each listing in full: https://www.anchorterminal.com/api/v1/tools/anrok.json and https://www.anchorterminal.com/api/v1/tools/numeral.json

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- [Numeral vs Quaderno](https://www.anchorterminal.com/compare/numeral-vs-quaderno.md)
- [Numeral vs TaxCloud](https://www.anchorterminal.com/compare/numeral-vs-taxcloud.md)
- [Numeral vs TaxJar](https://www.anchorterminal.com/compare/numeral-vs-taxjar.md)
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