FreshBooks API by FreshBooks

# Fix list: FreshBooks API

From Anchor Terminal's listing at https://www.anchorterminal.com/tools/freshbooks, the October 2026 research run, assessed 1 October 2026. Grade E, 45.6 out of 100.

This is everything the published grade says the listing lacks, the biggest possible gain to the total first. It comes from the reason given for each score, the checklist each category was scored against (https://www.anchorterminal.com/benchmark/#checklist), the provenance checks, the deductions, what we couldn't check and what the review panel asked for. A fix counts at the next check, once it's public.

For a coding agent working on FreshBooks API: work through the items below in the product, its docs and its public pages. Each category gives the reason for its score, with the points each checklist item earned, and the checklist itself, so the gap is the items that earned less than their points. Change the product, not the wording, and keep a note of what you changed and where it's published.

## 1. Reliability, 35 out of 100, up to 13 more on the total

Why it scored 35: Statuspage at status.freshbooks.com with history, but per the 30 September check it has no API component, so API trouble is reported only as FreshBooks trouble (15). FreshBooks was down from 13:44 to 15:38 EDT on 4 August, about two hours, and degraded for about 90 minutes on 30 July. One major outage (10). No numbers, only "rate-limited if too many calls are made within a short period of time" (0). No 429, Retry-After or retry guidance in the limits or errors pages (0). No SLA found (0). GA (10).

The checklist (https://www.anchorterminal.com/benchmark/#checklist-reliability):

Hosted APIs, MCP servers, models and platforms.

- 20, a public status page with component history (Statuspage, Instatus, BetterStack or the vendor's own).
- 0 to 30, the incident record for the last 90 days on that page. 30 for a clean record or trivial incidents only, 20 for minor incidents only, 10 for one major outage (an hour or more of a core API down, or errors across the board), 0 for several. 5 when there's no history we could read, and the note says so.
- 15, rate limits documented with numbers.
- 15, documented 429 or overload handling (Retry-After, backoff guidance), and idempotency keys or safe-retry guidance where writes are involved.
- 10, an SLA published for any paid tier.
- 10, the surface agents use is generally available, not beta or preview.

Local packages, SDKs, frameworks and stdio MCP servers.

- 20, installs from an official package with supported runtimes stated.
- 25, a public CI and test suite, passing on the default branch.
- 0 to 25, open crash or regression issues relative to activity (25 for few and handled, 0 for many, old and unanswered).
- 15, semver discipline and breaking changes called out in a changelog.
- 15, version 1.0 or later, or declared stable.

Protocols are read from their reference implementations, the public facilitators or servers, spec stability and test vectors.

## 2. Payments & pricing, 30 out of 100, up to 8.8 more on the total

Why it scored 30: No x402, MPP or L402 (0). The API comes with any plan, and plan prices are public, Lite $23, Plus $43, Premium $70 a month, Select on request (10). 30-day trial with no card, per the pricing page (20). Browser signup and app registration (0).

The checklist (https://www.anchorterminal.com/benchmark/#checklist-payments):

The published rubric, also on the [x402 page](https://www.anchorterminal.com/x402/).

- 40, a machine payment protocol (x402, MPP or L402) on the tool's own endpoints. 10 to 30 when it covers only some endpoints or only goes through a third party, and the note says which.
- 20, per-call or per-unit pricing published without a login. 10 for public plan-only pricing, 0 for "contact sales" or prices behind a login.
- 20, a free tier or trial that doesn't need a card.
- 20, autonomous onboarding, meaning an agent can get access without a person signing up in a browser (keyless use, x402, a programmatic key API).

Payment platforms and agent wallets rarely charge for their own API over a machine protocol, so the first line has steps for them, and the highest one that applies counts. 40 when x402, MPP or L402 runs on all their own endpoints, 30 when it runs on part of their own API, 25 when their merchants can accept one, 20 for running a facilitator, 15 for paying as a buyer, and 0 when the only protocol is their own. Merchant acceptance sits above a facilitator because the platform's own customers can charge agents through it, while a facilitator settles for sellers who wire up the protocol themselves. The counter-argument (a facilitator does more for the protocol as a whole) has a point. Each note says which step applied.

Open-source software you run yourself is scored on its hosted or paid option if it has one. A free, self-hosted package with nothing to buy gets 20, 20 and 20 for the last three lines, and 0 to 40 for the first only if it ships a payment protocol.

## 3. Schema & documentation, 48 out of 100, up to 8.5 more on the total

Why it scored 48: No OpenAPI spec. A Postman collection is published, which we counted as a partial contract (10). No llms.txt or Markdown docs (0). Plain HTML reference pages per resource that explain the workflow, such as marking an invoice sent before reports count it (13). Field lists per resource, with fewer enums and constraints spelt out than the ledgers here (9). An errors page with numbered codes (1001 RequiredField, 1004 InvalidValue, 1012 UnknownResource) and request examples, but no error body example (11). The "API Changelog" section holds one entry, the 2021 to 2023 move to JWT tokens, and an x-api-version header on journal entries (5).

The checklist (https://www.anchorterminal.com/benchmark/#checklist-schema):

APIs and MCP servers.

- 25, a machine-readable contract (a public OpenAPI file or similar; for MCP, typed JSON Schema inputs on every tool).
- 10, llms.txt or Markdown docs served for agents.
- 0 to 20, descriptions that say what a tool is for, when to use it and when not to, read from the tool definitions in the source or the API reference.
- 0 to 15, typed inputs with enums, constraints and required fields, and no free-form JSON blobs.
- 0 to 15, examples and documented error responses.
- 15, versioning and a public changelog.

Models are read from the API reference, the OpenAPI file, llms.txt, the structured-output and tool-use docs and the model cards. Frameworks from docs a model can follow, typed interfaces, examples and the API reference.

## 4. Security & auth, 57 out of 100, up to 7.5 more on the total

Why it scored 57: OAuth 2.0 with read and write scopes per resource (user:invoices:read, user:journal_entries:write), short-lived JWT access tokens and a revoke endpoint. No PKCE mentioned (28). Read-only scopes make a read-only agent possible, and drafts act as a confirmation step for invoices (14). Returns the business's own records plus client-entered text, with no injection guidance (3). No audit log or API activity view found (0). PCI DSS Level 1 with an annual third-party audit and a responsible-disclosure policy. security.txt returned 403 to the 30 September check, and no bug bounty or SOC 2 found (12).

The checklist (https://www.anchorterminal.com/benchmark/#checklist-security):

- 0 to 30, the credential model. 30 for OAuth 2.1 with scopes, or scoped and revocable keys with rotation. 20 for plain revocable API keys. 10 for one all-powerful key. 10 off when a secret can travel in a URL query string as a documented option.
- 0 to 20, read-only or least-privilege modes, and confirmation or approval for destructive actions.
- 0 to 15, prompt-injection posture where the tool returns untrusted content (documented mitigations or guidance). A tool that returns no untrusted content gets 10.
- 0 to 15, audit logs or per-call visibility for the operator.
- 0 to 20, a security programme. security.txt or a disclosure policy, a bug bounty, SOC 2 or ISO 27001, advisories handled in public.

Models are read for retention, whether API data trains models (and whether that's off by default), zero-retention options and certifications. Frameworks for telemetry defaults, approval hooks, guardrails and sandboxing.

## 5. Maintenance & community, 14 out of 100, up to 7.5 more on the total

Why it scored 14: No dated API change found. The newest official SDK release is @freshbooks/api 4.1.0 on 11 September 2024, and the Python SDK's last tag is 1.2.1 from April 2023 (0). Nothing dated in the last 90 days (0). Support by email at api@freshbooks.com and a one-entry changelog (5). Official SDKs exist in two languages but haven't been released in two years (5). The Node repository has CI and Dependabot, last active February 2025, and the Python one last committed in August 2024 (4).

The checklist (https://www.anchorterminal.com/benchmark/#checklist-maintenance):

- 0 to 30, time since the last release, or the last published model or API change for a closed service. 30 within 30 days, 20 within 90, 10 within 180, 0 older.
- 20, at least three releases or dated changelog entries in the last 90 days.
- 0 to 25, responsiveness. Issues and pull requests answered on GitHub (the open issues and how recent the replies are). For closed services, a public changelog and a support or community channel that answers, 0 to 15.
- 15, presence in the official MCP registry under a verified namespace (MCP servers), or current official SDKs (APIs and models).
- 10, package health, current dependencies and CI.

Models are read for deprecation notice periods and model churn rather than release counts.

## 6. Agent ergonomics, 61 out of 100, up to 6.3 more on the total

Why it scored 61: per_page up to 100 and includes to pull related objects only when asked. No field selection (15). search[] filters, page and per_page on lists (18). Numbered error codes an agent can act on, but nothing on throttling (13). No idempotency keys or retry guidance. Invoices stay drafts until marked sent (5). Official SDKs in Python and Node, though both are stale, and an account id or business id lookup is needed before most calls (10).

The checklist (https://www.anchorterminal.com/benchmark/#checklist-ergonomics):

- 0 to 25, context cost. For MCP, the number and size of the tool definitions (25 for ten or fewer compact tools, 15 for 11 to 30, 5 for more than 30, plus up to 10 back for toolsets, dynamic loading or read-only subsets). For APIs, whether responses can be sized (field selection, limits, summaries).
- 20, pagination, filtering and output-size controls.
- 20, actionable, documented error responses, codes and messages an agent can recover from.
- 20, idempotency or safe retries, and for MCP the `readOnlyHint` and `destructiveHint` annotations.
- 15, sensible defaults, few required parameters, and official SDKs in at least two languages.

Models are read for tool use, structured output, prompt caching, context length, batch and SDKs. Frameworks for how much code and how many defaults a tool-calling agent with MCP needs.

## 7. Transparency & trust, 68 out of 100, up to 2.8 more on the total

Made of editorial 56, provenance 80.

Why it scored 68: Closed service with dated terms under Ontario law naming 2NDSITE Inc., and MIT SDKs (15). Privacy policy dated 5 February 2026 with a DPO, an EU representative, SCCs and a subprocessor list, but no retention periods, only delete or anonymise when done (20). No deprecation policy, and the only changelog entry is the JWT migration (5). A public subprocessor list and Google Cloud Platform hosting stated on the security safeguards page (16).

The checklist (https://www.anchorterminal.com/benchmark/#checklist-transparency):

- 0 to 30, source availability and licence clarity. 30 for open source under an OSI licence, 15 for closed with clear terms, 0 for unclear terms.
- 0 to 30, data handling and retention statements that agree with each other (privacy policy, DPA, retention periods, subprocessors).
- 0 to 20, a deprecation policy or notices with dates.
- 0 to 20, telemetry disclosed with an opt-out (local software), or subprocessors and data locations disclosed (hosted).

The other half of Transparency and trust is the provenance score, computed from checked facts (below). The category score is the mean of the two.

Provenance checks not met in full (half of this category, computed from checked facts):

- Changelog: not found (0 of 10)
- security.txt: could not be fetched (0 of 10)

## What we couldn't check

What we couldn't read counted as absent. Publishing it on a page a plain HTTP fetch can read (not only in a browser) lets the next check count it.

- The real rate-limit threshold and the status code FreshBooks returns when it throttles
- Whether any API change has shipped since 2023, since no dated changelog exists
- Whether security.txt exists (403 on 30 September) and whether a bug bounty runs
- lastRelease is set to the newest Node SDK release (11 September 2024) for want of a dated API change

## Weaknesses

- Rate limits have no numbers, status code or headers
- No sandbox, so testing happens in a trial account
- Official SDKs last released in April 2023 (Python) and September 2024 (Node)
- Changelog holds a single entry, the move to JWT tokens
- About two hours of full outage on 4 August 2026, and no API component on the status page

## What costs an agent a turn today

The notes we give agents before they call it. Each one is a workaround an agent shouldn't need.

- Call /auth/api/v1/users/me first and keep both ids. Accounting endpoints take account_id, projects and time tracking take business_id
- Serialise token refreshes. Issuing a new refresh token kills the old one at once
- Mark an invoice as sent (action_mark_as_sent) or email it. Reports ignore drafts
- Send x-api-version: 2023-09-25 on journal entry calls
- Back off on any throttling response yourself. There's no Retry-After to read and no published limit

## What the review panel asked for

- publish an OpenAPI spec
- add an error body example
- API activity log
- refresh token expiry

## When it's done

Send what changed and where it's published as a dispute (https://www.anchorterminal.com/builders/#disputes, or `POST https://www.anchorterminal.com/api/v1/contact` with `"kind": "dispute"`). Disputes are answered in public, and the listing is checked again by the same checklist. Paying for an audit or a listing claim changes nothing here.