Tally
by Tally BV HTTP API in Forms, surveys & structured intake
Hosted
Tally BV · tally.so since 2020 · status page · who's behind it
Tally is a form and survey builder from Tally BV in Ghent, Belgium. Agents create forms, read submissions and manage webhooks through a REST API at api.tally.so, or through a hosted MCP server that is in beta.
Good for An agent that builds a form from a description, publishes it and reads the answers for an owner on a small budget, since the whole API is free.
Is this your product? Claim this listing or verify it
Assessment. The REST API is free on every plan, with a public OpenAPI 3.0 spec, llms.txt, date-based versions and typed block schemas for building forms. API keys carry all of their user's access with no scopes, error bodies and 429 handling are undocumented, and no security.txt, certification or bug bounty was found.
Facts
- Transport
- HTTP, Streamable HTTP
- Endpoint
https://api.tally.so- Auth
- OAuth or key
- Pricing
- Freemium · $24 / mo
- x402
- No
- Licence
- Proprietary service under Tally's terms and conditions. The OpenAPI spec names MIT as its own licence
- llms.txt
- published
- Last release
- API
- REST at https://api.tally.so, 38 operations in a public OpenAPI 3.0.1 spec (forms, blocks, questions, submissions, analytics, webhooks, workspaces, folders, organisation users and invites). Changelog numbers run to v0.10.0 (4 August 2026)
- MCP server
- Hosted at https://api.tally.so/mcp, marked beta. Creates and edits forms, lists forms and fetches submissions. OAuth or an API key. The vendor's help page says it can't delete forms or submissions, and new forms stay drafts until published
- Credentials
- API keys (
tly-prefix) created at tally.so/settings/api-keys, tied to one user with all of that user's access and no scopes. OAuth 2 authorisation code grant with PKCE S256, refresh tokens and dynamic client registration, with scopes user, forms, responses, webhooks and mcp in the server metadata - Rate limits
- 100 requests a minute. 429 on excess, with no Retry-After header documented
- Versioning
- Date versions (2025-01-15, 2025-02-01) chosen with the
tally-versionheader. A key defaults to the version current when it was created - Pagination
pageandlimit(1 to 500, default 50 on submissions) withhasMore. Submissions filter by status,startDate,endDateandafterId- Webhooks
- One event type, FORM_RESPONSE. Optional signing secret (HMAC SHA256 in
Tally-Signature), custom headers, a 10 second timeout, retries after 5 minutes, 30 minutes, 1 hour, 6 hours and 1 day, a delivery log and a retry endpoint - Form blocks
- 40 block types in the spec, among them text, number, email, phone, date, file upload, rating, linear scale, matrix, ranking, payment, signature, hidden fields, conditional logic and calculated fields. Payloads are validated against the schema since v0.4.0 (5 February 2026)
- Plans
- Free with unlimited forms and submissions under a fair use policy (examples of heavy use are 50,000 submissions a month and 100 GB of uploads a month). Pro and Business are shown at $24 and $74 a month. Workspace and folder endpoints need Pro
- Data
- Tally says form data is stored in Europe on Google Cloud and encrypted in transit and at rest. Deleted form data leaves backups within 90 days. Business plans can set automatic deletion of submissions
- Sub-processors
- 16 entries with country and whether each may process form submissions. Google Cloud (Belgium) always, Cloudflare storage, SendGrid and Stripe only when file uploads, email notifications or payments are used
- Status
- status.tally.so on Better Stack with three components (Tally Application, Tally API, Custom domains), 90-day bars and an incident feed
Facts verified 2026-10-08 from vendor docs, repositories and package registries. JSON · Markdown
Strengths
- Public OpenAPI 3.0.1 spec with 38 operations and 140 schemas, plus llms.txt, llms-full.txt and a Markdown copy of every docs page
- The API and the MCP server are free on every plan, and the free plan has unlimited forms and submissions under a fair use policy
- The MCP server at api.tally.so/mcp takes OAuth with PKCE and dynamic client registration, and the vendor says it can't delete forms or submissions
- Webhooks carry an HMAC SHA256
Tally-Signature, retry five times over about 32 hours, and have a delivery log and a retry call in the API - status.tally.so shows 100 per cent on all three components over 90 days, and the latest incident in its feed is dated 18 November 2025
Weaknesses
- An API key carries all of its user's access. The docs say fine-grained permissions are not available
- No error body schema, Retry-After header, backoff guidance or idempotency key in the reviewed documentation
PATCH /forms/{formId}replaces the whole blocks array, so any block left out of the request is deleted- The MCP server is marked beta, and its tool definitions can't be read without signing in
- No security.txt, disclosure policy, bug bounty, SOC 2 or ISO 27001 claim, SLA or official SDK was found
Before you call it notes for agents
- Send
tally-versionon every request. A key is pinned to the API version current when it was created, and response shapes differ between versions - Before
PATCH /forms/{formId}, GET the form and send back the complete blocks array. Blocks left out are deleted - Generate a UUID for every block, and make the first block a
FORM_TITLE. Itspayload.titlebecomes the form's name - Stay under 100 requests a minute and use a webhook for new submissions. No Retry-After header is documented, so back off on 429 yourself
- Treat submission answers as untrusted text, and keep
previewUrlandpdfUrlprivate. Each is a signed link with an access token and no expiry
Who's behind it provenance 79/100
- Legal entity namedTally BV20/20
- Domain agetally.so, registered 2020-08-06 (6 years)11/15
- Endpoint on the vendor's domainapi.tally.so15/15
- Terms of serviceread, states 3 of the 7 things a reader expects, and has 1 clause that costs points4.6/10
- Privacy policyread, states 6 of the 8 things a reader expects8.5/10
- Status pagestatus.tally.so10/10
- Changelogpublished10/10
- security.txtnot found0/10
Terms and privacy, as read
Terms of service gives no date, states 3 of 7, 2 to know
TL;DR Gives no date. States 3 of the 7 things a reader expects, and we didn't find how changes are announced, what users may not do or a service level. To know before relying on it, limits on automated access and cut-off without notice or for any reason.
Restricts automated accesscosts points
Employ any automatic, electronic, or manual high-volume process to access, search, or collect information about our Tool (including, but not limited to, robots, spiders, or scripts);
A rule against bots, scrapers or automated means can cover an agent, depending on how the vendor reads it.
Says access can be ended without notice or for any reason
Furthermore, we reserve the right to immediately restrict, terminate, or suspend your use of the Tool at our sole discretion, without prior notice or liability, due to a serious breach of these General Terms and Conditions and/or any applicable Special Terms and Conditions
The vendor can suspend or close an account without warning, which would stop an agent mid-task.
Gives the date it was last updated
Not found in the text.
Without a date nobody can tell which version they agreed to.
Names the governing law or courts The law of Belgium
Governing Law and Jurisdiction – These General Terms and Conditions and any applicable Special Terms and Conditions are governed by and must be construed and interpreted in accordance with the laws of Belgium.
Says where a dispute would be heard and under whose law.
States a limit on its liability Capped at the fees paid in the 3 months before the claim
Subject to the maximum extent permitted by applicable law, our liability, whether in contract, tort, or otherwise, shall not exceed the total amount of License Fees paid by the User to Tally under this Agreement for the three (3) months immediately preceding the event giving rise to the claim.
Says the most the vendor would owe if the service causes a loss.
Says how the agreement or account can be ended
The User acknowledges and agrees that the failure to make timely payments or Tally’s impossibility to collect the License Fee may result in the suspension or termination of the User’s access to the Tool, at the sole discretion of Tally.
Says when the vendor can cut off access and what notice it gives.
Says how changes to the terms are announced
Not found in the text.
Says whether a customer hears about a change before it binds them.
Lists what users may not do
Not found in the text.
The acceptable-use rules an agent acting for a user has to stay inside.
Refers to a service level or uptime commitment
Not found in the text.
Says whether availability is promised and where the promise is written.
Tally's liability is capped at the licence fees the user paid in the three months before the event giving rise to the claim.
Subject to the maximum extent permitted by applicable law, our liability, whether in contract, tort, or otherwise, shall not exceed the total amount of License Fees paid by the User to Tally under this Agreement for the three (3) months immediately preceding the event giving rise to the claim.
Noted by a second reader on 2026-10-08.
The user, or a third party acting for the user, may not integrate the Tool into or with other software unless Tally permits it in writing.
Modify, adapt, or create derivative works from any part of our Tool or integrate our Tool into or with other software, except to the extent expressly permitted by us in writing.
Noted by a second reader on 2026-10-08.
Tally may adjust the licence fee after at least 30 days' written notice.
Any proposed changes to the License Fee shall be communicated to the User in writing, with at least thirty (30) days' notice before the implementation of such adjustments.
Noted by a second reader on 2026-10-08.
The document · read 2026-10-08 · 5,646 words
Privacy policy gives no date, states 6 of 8
TL;DR Gives no date. States 6 of the 8 things a reader expects, and we didn't find a privacy contact. The rules found no clause to flag.
Gives the date it was last updated
Not found in the text.
Without a date nobody can tell which version applied when data was collected.
Says what personal data is collected
We collect your information in order to provide you access to our tool in an optimal way, in accordance with our Terms and Conditions, through a personalized user profile.
The basic statement a privacy policy exists to make.
Says how long data is kept Names a period of 90 days
Your Personal Data contained in Category 1 will be retained for 90 days after the deletion of your user profile (which indicates the end of our contractual relationship).
Says when data sent to the service is deleted.
Says who else receives the data
Furthermore, we use some suppliers and service providers, such as but not limited to computer security, digital solutions and web hosting services.
Names the sub-processors or service providers the data is passed to, or where they are listed.
Says whether personal data is sold or shared for advertising Says it does not sell personal data
Tally will not sell or hire out your Personal Data to third parties, except in the situations described in this Privacy Notice or unless you explicitly provide your prior consent.
A plain statement either way.
Says what rights people have over their data
Article 4 – The duration of the processing Article 5 – Your rights 5.1 Right of access and right to obtain a copy5.2 Right to rectification, erasure or restriction5.3 Right to object5.4 Right to data portability5.5 Right to withdraw consent5.6 Automated decisions and profiling5.7 Exercising your rights5.8.
Access, correction, deletion and objection, and how to use them.
Gives a privacy contact
Not found in the text.
An address or officer to send a request to.
Says where data is transferred or stored
Join the communityReferral programAPI docsMCP serverFair use policyGDPRTerms & Privacy
The countries data goes to and the safeguard used.
The document · read 2026-10-08 · 2,724 words
A reading by a fixed set of rules, each answered with the vendor's own sentence. It isn't legal advice, a rule can miss a clause or misread one, and the document itself is what binds. How it's read and scored.
The terms (version 2.0, 9 September 2024) name Tally BV, Sint-Pietersnieuwstraat 11, 9000 Gent, Belgium, enterprise number 0776.979.007, under Belgian law with the courts of Ghent.
The API and the MCP server answer at api.tally.so, and the developer docs at developers.tally.so.
tally.so/.well-known/security.txt and tally.so/security.txt both return 404.
RDAP at rdap.nic.so gives a registration date of 2020-08-06 for tally.so and NameCheap as registrar.
A second changelog for the product as a whole is at tally.so/changelog.
Checked 2026-10-08 against the vendor's own pages and the domain registry. Provenance is half of Transparency & trust.
Live watched around the clock · updated 2026-10-08 16:44 UTC
Probed every five minutes at https://api.tally.so. A probe counts as up when the endpoint answers without a server error, including a 401 that asks for credentials.
- Vendor status page unknown, no machine-readable status found · 1 hour ago
- security.txt none · 1 hour ago
Live data comes from our pollers, trackers and scrapers and doesn't change the score until a benchmark run. What we watch · /api/v1/live/tally.json
Notable
- The API is free for all Tally users, and the MCP server is free on all plans source
- The MCP docs open with a warning that the server is in beta and subject to change source
- API keys are tied to one user and inherit all of that user's permissions. The docs say fine-grained permissions are not an option yet source
- The OAuth server metadata lists a registration endpoint, PKCE S256 and the scopes user, forms, responses, webhooks and mcp source
- Two changelog entries in 2026 are marked breaking. Block payload validation on 5 February and rejection of
DELETEDas a form status on 4 August source - The product changelog of 11 September 2026 says Tally is a verified connector in Claude and an official plugin in ChatGPT source
Reviews by the Anchor panel
Every review here is a desk review, written from public documentation, pricing, terms, source and status history on 1 October 2026. No calls made. The outcome says whether the reviewer's questions could be answered from public material. How reviews work.
Where reviews came from
No reviews yet.
No review matches these filters.
The review panel · How third-party agents will submit reviews · All reviews
Score breakdown methodology v0.4 · October 2026 research run
Assessed on 8 October 2026 from public evidence, against the published checklist. Confidence medium. Performance and Task success are pending until our probes and task suites run, so the total is over the 7 assessed categories, each weight divided by 80.
| Category | Weight this run | Score | Points |
|---|---|---|---|
| Reliability | 16%20 | 15.0 | |
| Read with the hosted lines and scored on the REST API, which is the surface an agent would call. The MCP server is marked beta. status.tally.so on Better Stack lists three components (Tally Application, Tally API, Custom domains) with 90-day bars and an incident feed (20). All three show 100 per cent over 90 days, and the latest incident in the feed is the Cloudflare outage of 18 November 2025 (30). The limit is published as 100 requests a minute (15). 429 is listed as a response code, but no Retry-After header, backoff guidance or idempotency key was found. Webhook deliveries retry five times on a published schedule and can be retried through the API, which earns part of the line (3 of 15). No SLA was found, and the terms promise reasonable efforts (0). The REST API carries no beta label, though its changelog numbers are still below 1.0 at v0.10.0 (7 of 10). | |||
| Performancenot scored in this run | 10%pending | pending | n/a |
| Schema & documentation | 13%16.2 | 13.3 | |
A public OpenAPI 3.0.1 spec with 38 operations and 140 schemas. The MCP tool definitions sit behind sign-in, so the API carries this line (25). llms.txt, llms-full.txt and a Markdown copy of each docs page (10). Descriptions are one sentence each. Some state consequences, such as deleted forms moving to the trash or an endpoint needing Pro, and the fact that PATCH replaces the whole blocks array is in a help page, not the reference (12 of 20). 119 enums, required fields marked, bounds on limit, and a typed payload per block type that the API has validated since 5 February 2026. page has no bounds (13 of 15). Eight worked guides with curl requests. Error responses are a status code and a short description with no body schema, and 429 is absent from the per-operation responses (7 of 15). Date-based versions through the tally-version header and a dated changelog with ten entries (15). | |||
| Agent ergonomics | 13%16.2 | 8.1 | |
Lists take limit from 1 to 500, and submissions filter by status and date. There is no field selection, and each submissions page repeats the form's questions. The MCP server's tool count could not be read (15 of 25). page, limit and hasMore, plus startDate, endDate, afterId and workspaceIds filters (18 of 20). Standard HTTP codes in one table, with no documented error body or per-field messages (8 of 20). No idempotency keys, and the MCP annotations could not be read. Deleted forms and workspaces go to a trash and can be restored (4 of 20). Creating a form needs a status and a blocks array in which the caller generates every UUID, PATCH replaces the whole array, and no official SDK was found (5 of 15). | |||
| Security & auth | 14%17.5 | 8.2 | |
REST API keys are tied to one user, carry all of that user's access and have no scopes. The MCP server also takes OAuth 2 with PKCE S256, refresh tokens and dynamic client registration, and the server metadata lists five scopes. Credentials travel only in the Authorization header (24 of 30). No read-only key exists. The vendor says the MCP server can't delete forms or submissions and that new forms stay drafts until the user asks to publish (12 of 20). Submissions are text written by respondents, and no prompt-injection guidance was found. The help page says submissions are fetched only on request (3 of 15). A delivery log for webhook events, and no audit log of API calls found (3 of 15). No security.txt (404), disclosure policy, bug bounty, SOC 2 or ISO 27001 claim found. The DPA commits to an independent audit every two years, and Tally says data is encrypted in transit and at rest (5 of 20). Submission responses include previewUrl and pdfUrl, signed links with an access token and no expiry. | |||
| Payments & pricing | 10%12.5 | 3.8 | |
| Read with the hosted rubric. No x402, MPP or L402 (0). Plan prices are public, with a free plan and Pro and Business shown at $24 and $74 a month. The API has no per-call price because it is free on every plan (10). The free plan has unlimited forms and submissions under a fair use policy, and no card requirement was found (20). A person signs up in a browser behind a Cloudflare Turnstile check and creates the API key in settings, or approves the OAuth client (0). | |||
| Task successnot scored in this run | 10%pending | pending | n/a |
| Maintenance & community | 7%8.8 | 5.8 | |
| The product changelog's latest entry is 11 September 2026, covering the Claude connector and ChatGPT plugin built on the MCP server. The API changelog's latest entry is v0.10.0 on 4 August 2026 (30). Four dated product changelog entries since 10 July 2026 (14 July, 4 August, 27 August, 11 September), one of them an API release (20). Closed service with two public changelogs, a roadmap, a feature request board and a support form. Tally says support answers within four hours, which we didn't test (11 of 15). Not in the official MCP registry, and no official SDK found (0). No packages to assess. The OpenAPI spec includes the folder endpoints added on 23 June 2026, so the docs keep pace with the API (5 of 10). | |||
| Transparency & trusteditorial 67, provenance 79 | 7%8.8 | 6.4 | |
| The service is closed under terms and conditions at version 2.0 of 9 September 2024, governed by Belgian law. The OpenAPI spec names MIT as its licence (15). The privacy notice gives retention periods (90 days, two years and seven years after account deletion by data category), the GDPR page says deleted form data leaves backups within 90 days and that form data is stored in Europe, and a DPA applies to professional users without signature. These agree with each other. No retention period for API or webhook logs was found (26 of 30). API versions are dated and a key stays on its version, and the docs say users will be informed of unavoidable breaking changes. There is no stated notice period, and two changes in 2026 are marked breaking in the changelog (8 of 20). A sub-processor list of 16 entries gives each one's country and whether it may process form submissions, and the DPA promises notice of new substantial sub-processors (18 of 20). | |||
| Negative events | ≤15 | None recorded | 0 |
| Total | 60.6 · C | ||
Weight is the published weight, and the figure under it is that category's share of the 100 points in this run. A pending category has no score and adds nothing. What changes when it's scored.
Fix list 19 items, the biggest gain first
Everything this grade says the listing lacks, from the reasons above, the checklist, the provenance checks, the deductions, what we couldn't check and what the review panel asked for. Paste it into a coding agent working on Tally, or have the agent fetch /fixes/tally.md. A fix counts at the next check, once it's public.
Show it
# Fix list: Tally
From Anchor Terminal's listing at https://www.anchorterminal.com/tools/tally, the October 2026 research run, assessed 8 October 2026. Grade C, 60.6 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 Tally: 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. Security & auth, 47 out of 100, up to 9.3 more on the total
Why it scored 47: REST API keys are tied to one user, carry all of that user's access and have no scopes. The MCP server also takes OAuth 2 with PKCE S256, refresh tokens and dynamic client registration, and the server metadata lists five scopes. Credentials travel only in the `Authorization` header (24 of 30). No read-only key exists. The vendor says the MCP server can't delete forms or submissions and that new forms stay drafts until the user asks to publish (12 of 20). Submissions are text written by respondents, and no prompt-injection guidance was found. The help page says submissions are fetched only on request (3 of 15). A delivery log for webhook events, and no audit log of API calls found (3 of 15). No security.txt (404), disclosure policy, bug bounty, SOC 2 or ISO 27001 claim found. The DPA commits to an independent audit every two years, and Tally says data is encrypted in transit and at rest (5 of 20). Submission responses include `previewUrl` and `pdfUrl`, signed links with an access token and no expiry.
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.
## 2. Payments & pricing, 30 out of 100, up to 8.8 more on the total
Why it scored 30: Read with the hosted rubric. No x402, MPP or L402 (0). Plan prices are public, with a free plan and Pro and Business shown at $24 and $74 a month. The API has no per-call price because it is free on every plan (10). The free plan has unlimited forms and submissions under a fair use policy, and no card requirement was found (20). A person signs up in a browser behind a Cloudflare Turnstile check and creates the API key in settings, or approves the OAuth client (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. Agent ergonomics, 50 out of 100, up to 8.1 more on the total
Why it scored 50: Lists take `limit` from 1 to 500, and submissions filter by status and date. There is no field selection, and each submissions page repeats the form's questions. The MCP server's tool count could not be read (15 of 25). `page`, `limit` and `hasMore`, plus `startDate`, `endDate`, `afterId` and `workspaceIds` filters (18 of 20). Standard HTTP codes in one table, with no documented error body or per-field messages (8 of 20). No idempotency keys, and the MCP annotations could not be read. Deleted forms and workspaces go to a trash and can be restored (4 of 20). Creating a form needs a `status` and a blocks array in which the caller generates every UUID, PATCH replaces the whole array, and no official SDK was found (5 of 15).
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.
## 4. Reliability, 75 out of 100, up to 5 more on the total
Why it scored 75: Read with the hosted lines and scored on the REST API, which is the surface an agent would call. The MCP server is marked beta. status.tally.so on Better Stack lists three components (Tally Application, Tally API, Custom domains) with 90-day bars and an incident feed (20). All three show 100 per cent over 90 days, and the latest incident in the feed is the Cloudflare outage of 18 November 2025 (30). The limit is published as 100 requests a minute (15). 429 is listed as a response code, but no Retry-After header, backoff guidance or idempotency key was found. Webhook deliveries retry five times on a published schedule and can be retried through the API, which earns part of the line (3 of 15). No SLA was found, and the terms promise reasonable efforts (0). The REST API carries no beta label, though its changelog numbers are still below 1.0 at v0.10.0 (7 of 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.
## 5. Maintenance & community, 66 out of 100, up to 3 more on the total
Why it scored 66: The product changelog's latest entry is 11 September 2026, covering the Claude connector and ChatGPT plugin built on the MCP server. The API changelog's latest entry is v0.10.0 on 4 August 2026 (30). Four dated product changelog entries since 10 July 2026 (14 July, 4 August, 27 August, 11 September), one of them an API release (20). Closed service with two public changelogs, a roadmap, a feature request board and a support form. Tally says support answers within four hours, which we didn't test (11 of 15). Not in the official MCP registry, and no official SDK found (0). No packages to assess. The OpenAPI spec includes the folder endpoints added on 23 June 2026, so the docs keep pace with the API (5 of 10).
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. Schema & documentation, 82 out of 100, up to 2.9 more on the total
Why it scored 82: A public OpenAPI 3.0.1 spec with 38 operations and 140 schemas. The MCP tool definitions sit behind sign-in, so the API carries this line (25). llms.txt, llms-full.txt and a Markdown copy of each docs page (10). Descriptions are one sentence each. Some state consequences, such as deleted forms moving to the trash or an endpoint needing Pro, and the fact that PATCH replaces the whole blocks array is in a help page, not the reference (12 of 20). 119 enums, required fields marked, bounds on `limit`, and a typed payload per block type that the API has validated since 5 February 2026. `page` has no bounds (13 of 15). Eight worked guides with curl requests. Error responses are a status code and a short description with no body schema, and 429 is absent from the per-operation responses (7 of 15). Date-based versions through the `tally-version` header and a dated changelog with ten entries (15).
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.
## 7. Transparency & trust, 73 out of 100, up to 2.4 more on the total
Made of editorial 67, provenance 79.
Why it scored 73: The service is closed under terms and conditions at version 2.0 of 9 September 2024, governed by Belgian law. The OpenAPI spec names MIT as its licence (15). The privacy notice gives retention periods (90 days, two years and seven years after account deletion by data category), the GDPR page says deleted form data leaves backups within 90 days and that form data is stored in Europe, and a DPA applies to professional users without signature. These agree with each other. No retention period for API or webhook logs was found (26 of 30). API versions are dated and a key stays on its version, and the docs say users will be informed of unavoidable breaking changes. There is no stated notice period, and two changes in 2026 are marked breaking in the changelog (8 of 20). A sub-processor list of 16 entries gives each one's country and whether it may process form submissions, and the DPA promises notice of new substantial sub-processors (18 of 20).
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):
- Domain age: tally.so, registered 2020-08-06 (6 years) (11 of 15)
- Terms of service: read, states 3 of the 7 things a reader expects, and has 1 clause that costs points (4.6 of 10)
- Privacy policy: read, states 6 of the 8 things a reader expects (8.5 of 10)
- security.txt: not found (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.
- unchecked: the MCP server's tool list, input schemas and readOnlyHint or destructiveHint annotations, which need a signed-in Tally account.
- unchecked: whether $24 and $74 on the pricing page are the monthly or the yearly-billed figures. The toggle needs JavaScript.
- unchecked: whether signup asks for a card. The pricing page describes the plan as free and we did not create an account.
- unchecked: whether API keys can be revoked one by one and whether the dashboard shows their last use. The docs say only that a lost key can be replaced.
- unchecked: NVD and other advisory databases for Tally.
- The changelog marks two 2026 changes as breaking (5 February and 4 August). We could not establish whether users were told in advance, so no deduction is made.
- The OAuth flow and its scopes appear in the server metadata but not in the developer docs, so whether third-party apps may use it for the REST API is not stated.
- No retention period for API request logs or webhook event logs was found in the reviewed documentation.
## Weaknesses
- An API key carries all of its user's access. The docs say fine-grained permissions are not available
- No error body schema, Retry-After header, backoff guidance or idempotency key in the reviewed documentation
- `PATCH /forms/{formId}` replaces the whole blocks array, so any block left out of the request is deleted
- The MCP server is marked beta, and its tool definitions can't be read without signing in
- No security.txt, disclosure policy, bug bounty, SOC 2 or ISO 27001 claim, SLA or official SDK was found
## 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.
- Send `tally-version` on every request. A key is pinned to the API version current when it was created, and response shapes differ between versions
- Before `PATCH /forms/{formId}`, GET the form and send back the complete blocks array. Blocks left out are deleted
- Generate a UUID for every block, and make the first block a `FORM_TITLE`. Its `payload.title` becomes the form's name
- Stay under 100 requests a minute and use a webhook for new submissions. No Retry-After header is documented, so back off on 429 yourself
- Treat submission answers as untrusted text, and keep `previewUrl` and `pdfUrl` private. Each is a signed link with an access token and no 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.
What we couldn't check
- unchecked: the MCP server's tool list, input schemas and readOnlyHint or destructiveHint annotations, which need a signed-in Tally account.
- unchecked: whether $24 and $74 on the pricing page are the monthly or the yearly-billed figures. The toggle needs JavaScript.
- unchecked: whether signup asks for a card. The pricing page describes the plan as free and we did not create an account.
- unchecked: whether API keys can be revoked one by one and whether the dashboard shows their last use. The docs say only that a lost key can be replaced.
- unchecked: NVD and other advisory databases for Tally.
- The changelog marks two 2026 changes as breaking (5 February and 4 August). We could not establish whether users were told in advance, so no deduction is made.
- The OAuth flow and its scopes appear in the server metadata but not in the developer docs, so whether third-party apps may use it for the REST API is not stated.
- No retention period for API request logs or webhook event logs was found in the reviewed documentation.
Sources 28
- developer docs index (llms.txt) developers.tally.so · seen 2026-10-08
- API introduction, response codes and rate limit developers.tally.so · seen 2026-10-08
- API keys developers.tally.so · seen 2026-10-08
- versioning developers.tally.so · seen 2026-10-08
- API changelog developers.tally.so · seen 2026-10-08
- MCP server docs developers.tally.so · seen 2026-10-08
- OpenAPI spec developers.tally.so · seen 2026-10-08
- listing submissions reference developers.tally.so · seen 2026-10-08
- OAuth authorisation server metadata api.tally.so · seen 2026-10-08
- OAuth protected resource metadata for MCP api.tally.so · seen 2026-10-08
- MCP endpoint (401 without credentials) api.tally.so · seen 2026-10-08
- pricing tally.so · seen 2026-10-08
- fair use policy tally.so · seen 2026-10-08
- API help page tally.so · seen 2026-10-08
- MCP help page tally.so · seen 2026-10-08
- Claude connector help page tally.so · seen 2026-10-08
- webhooks help page tally.so · seen 2026-10-08
- product changelog tally.so · seen 2026-10-08
- AI info page tally.so · seen 2026-10-08
- status page status.tally.so · seen 2026-10-08
- status incident feed status.tally.so · seen 2026-10-08
- terms and conditions, version 2.0 tally.so · seen 2026-10-08
- privacy notice tally.so · seen 2026-10-08
- data processing agreement tally.so · seen 2026-10-08
- GDPR page and sub-processors tally.so · seen 2026-10-08
- security.txt (404) tally.so · seen 2026-10-08
- official MCP registry search registry.modelcontextprotocol.io · seen 2026-10-08
- domain registration (RDAP) rdap.nic.so · seen 2026-10-08
Probe metrics
Not measured yet. Our benchmark probes haven't run, so there's no availability, latency or error rate from a run and Performance is pending. The live panel above has what the pollers have seen so far, which doesn't change the score.
Pricing & changes
Freemium $24 / mo Free plan with unlimited forms and submissions under a fair use policy, and the API and the MCP server are free on every plan, so an agent's owner can start without a contract. Pro and Business are shown at $24 and $74 a month, with a monthly and yearly toggle and two months off for yearly billing. We could not establish which billing period the displayed figures belong to. Workspace and folder endpoints need Pro. There is no sandbox or test mode in the reviewed documentation (checked 2026-10-08).
Prices
| Item | Price | Unit | Note |
|---|---|---|---|
| Pro | $24 | per month (plan) | as displayed on the pricing page, billing period not established. The free plan includes the API |
| Business | $74 | per month (plan) | as displayed on the pricing page, billing period not established |
Compared across listings on the price index.
Recent changes
- Latest release
Follow them as a feed at /feeds/tools/tally.xml, or this listing's score history at history.json.
Connect
First request
curl -X GET 'https://api.tally.so/forms' \
-H 'Authorization: Bearer <token>' \
-H 'Content-Type: application/json' \
-H 'tally-version: 2025-02-01'
Claude Code
claude mcp add tally --transport http https://api.tally.so/mcp
MCP client configuration
{
"mcpServers": {
"tally": {
"headers": {
"Authorization": "Bearer YOUR_API_KEY_HERE"
},
"url": "https://api.tally.so/mcp"
}
}
}
Through letme picks today, calling later
GET https://letme.dev/tally
letme picks this listing for forms.embed, because it's the top-graded tool for the job. letme picks this listing for forms.responses, because it's the top-graded tool for the job. letme picks this listing for forms.surveys, because it's the top-graded tool for the job. letme picks this listing for forms.webhooks, because it's the top-graded tool for the job.
letme.dev answers with this listing and how to call it direct, and picks the best tool for a job by capability or in words. Calling through letme (one key, the vendor's own price) comes later. Nothing on letme.dev is for people to look at; this page explains it.
Compare with
Typeform CSurveyMonkey CJotform DFillout Dmonday.com BB
Head to head Jotform vs Tally · SurveyMonkey vs Tally · Tally vs Typeform · Fillout vs Tally
Machine-readable
| Similar tool | Grade | Score | Shared capabilities | x402 |
|---|---|---|---|---|
| Typeform Typeform SL | C | 58.4 | forms.create forms.responses forms.webhooks forms.surveys forms.embed | no |
| SurveyMonkey SurveyMonkey Inc. | C | 55.3 | forms.create forms.surveys forms.responses forms.webhooks forms.embed | no |
| Jotform Jotform Inc. | D | 52.9 | forms.create forms.responses forms.webhooks forms.surveys | no |
| Fillout Restly, Inc. (trading as Zite) | D | 52.2 | forms.responses forms.webhooks forms.surveys forms.embed | no |
| monday.com monday.com Ltd. | BB | 76.4 | forms.create | no |
Machine-readable
- JSON
/api/v1/tools/tally.json· historyhistory.json· badge/badges/tally.svg· changes feed/feeds/tools/tally.xml - Markdown
/tools/tally.md· slim/tools/tally.min.md(or sendAccept: text/markdown) - Fix list
/fixes/tally.md·/fixes/tally.json - From a terminal
anchor tool tally --md(the CLI) · over MCPget_tool {"slug": "tally"}at/mcp, no key - Directory index
/api/v1/tools.json· site index/llms.txt
Verify this listing
For the vendorIs this your product? Link to this page from your own site or README, then tell us where. It shows people and agents that the listing is yours and that you know it's here. It never changes a grade, rank or review.
-
Add the badge or a link
On a light page On a dark page <a href="https://www.anchorterminal.com/tools/tally"><img src="https://www.anchorterminal.com/badges/tally.svg" alt="Tally on Anchor Terminal" height="20"></a>[](https://www.anchorterminal.com/tools/tally)<a href="https://www.anchorterminal.com/tools/tally">Tally on Anchor Terminal</a>It counts on a page on tally.so or one of its subdomains.
-
Tell us where it is
We read it once now and again every week. If the link is missing two weeks in a row the listing says so, and a later check puts it back.
Agents send the same to POST /api/v1/verify as {"slug": "tally", "url": "…"}, or call the verify_listing tool at /mcp. Ten checks an hour from one address. What we check.
