Submittable
Submittable is a submission management, grants, and applications platform used by foundations, nonprofits, corporations, and governments to collect, review, and manage forms, applications, submissions, and awards. Its public REST API (v4, base https://submittable-api.submittable.com) provides read-and-write, programmatic access to account data - submissions and their form-field entries, projects and forms, submitters (users), labels, review team members and assignments, funds and payment distributions, and message attachments. The API uses HTTP Basic Authentication (an account access token sent as the password) and is throttled at roughly 10 transactions per second and 10,000 transactions per hour. API access is enabled per account under More > Integrations > API Access, and Submittable pricing is quote-based (bundled Grant/Application Management and Corporate Social Responsibility products, plus Enterprise) via contact-sales.
Limited machine-readable signal and partial portal coverage — documentation a human can read, but little a machine or agent can consume without scraping.
API Evangelist profiles Submittable the way a machine reads it — 29 machine-readable artifacts across 10 APIs, pulled from the provider's own public surface and indexed so a developer, an analyst, or an AI agent can evaluate it against every other provider on the network.
Every provider in the network is reduced to the same set of machine-readable artifacts — OpenAPI contracts, event specifications, GraphQL schemas, runnable collections, pricing and rate-limit signals, security posture, OAuth scopes, and the agent surfaces (MCP servers and skills) that let software drive the API on its own. We profile them because the interface is the part of a company you can actually inspect: it is a truer signal of what a provider does than any marketing page. From those artifacts we compute the Kin Score — Submittable scores 41.0/100 (thin), with a separate agent-readiness read of 31/100 (agent aware). The full breakdown is below, followed by every artifact we hold — each card links through to its machine-readable definition on apis.io.
Kin Score
This is the API Evangelist rating — a single, repeatable read computed from the artifacts on this page. Green fill is points earned; the red track is points possible, so every bar shows earned-versus-possible at a glance.
Kin Score
How this is scored →scored 2026-08-17 · rubric v0.11.0
Put this on your own site. The badge is drawn live from Submittable's current Kin Score — paste it once and it updates itself every time the score is recomputed. It follows your visitor's light or dark setting, and it links back here so anyone who sees it can read the full breakdown.
<!-- Kin Score · API Evangelist -->
<a href="https://providers.apievangelist.com/providers/submittable/"
title="Submittable on API Evangelist — API profile and Kin Score">
<img src="https://apis.io/badge/submittable.svg"
alt="Submittable Kin Score — API readiness rating by API Evangelist" width="150" height="150" loading="lazy">
</a>[](https://providers.apievangelist.com/providers/submittable/)<!-- Kin Score · API Evangelist -->
<a href="https://providers.apievangelist.com/providers/submittable/"
title="Submittable on API Evangelist — API profile and Kin Score">
<img src="https://apis.io/badge/submittable/card.svg"
alt="Submittable Kin Score — API readiness rating by API Evangelist" width="340" height="120" loading="lazy">
</a>More shapes, themes and sizes → · Score as JSON · How badges work
How we profile Submittable
Each block below is one kind of artifact we hold for Submittable. For each we say what it is and why it earns a place in the profile, then list every one we've indexed — capped at two rows, scroll within the panel for the rest.
APIs 10
Each API is captured as its own OpenAPI definition — every operation, parameter, and response. This is the single most useful machine-readable description of what an API does, and it's what lets us score, lint, mock, and generate against it without asking the provider for anything.
Individual APIs this provider publishes, each with its own machine-readable definition.
Submittable Assignments API
Routing of submissions to reviewers.
Submittable Entries API
Form-field responses captured on submissions.
Submittable Funds API
Budgets and grant distributions.
Submittable Labels API
Tags used to categorize submissions.
Submittable Messaging API
Message attachments.
Submittable Payments API
Payment records.
Submittable Projects API
The forms/programs people apply through.
Submittable Submissions API
Applications and entries sent to your projects.
Submittable Teams API
Organization team members and reviewers.
Submittable Users API
Submitters - the people who send submissions.
Scroll within the panel for all 10 ·
Open Collections 12
Open, tool-agnostic collections carry the same runnable value as Postman without locking you to one client — the portable, forkable form of the same exercise.
Open, tool-agnostic API collections (OpenAPI-derived and Bruno).
API Collection
OPEN COLLECTIONSubmittable Assignments API
OPEN COLLECTIONSubmittable Assignments Entries API
OPEN COLLECTIONSubmittable Assignments Funds API
OPEN COLLECTIONSubmittable Assignments Labels API
OPEN COLLECTIONSubmittable Assignments Messaging API
OPEN COLLECTIONSubmittable Assignments Payments API
OPEN COLLECTIONSubmittable Assignments Projects API
OPEN COLLECTIONSubmittable Assignments Submissions API
OPEN COLLECTIONSubmittable Assignments Teams API
OPEN COLLECTIONSubmittable Assignments Users API
OPEN COLLECTIONSubmittable API (v4)
OPEN COLLECTIONScroll within the panel for all 12 ·
Pricing Plans 1
Pricing is part of the interface. Machine-readable plans tell you what a tier costs and includes before you commit — one of the six things the Kin Score reads for commercial clarity.
Published pricing tiers and plan structures.
Rate Limits 1
Rate limits are the difference between a demo that works and a production integration that doesn't fall over. Publishing them is an operational-transparency signal — and a hard requirement for any agent that plans its own throughput.
Documented rate limits and quota policies.
Submittable Rate Limits
RATE LIMITSFinOps 1
Cost, billing, and metering signals let a buyer model the financial operations of an API before it's live. We profile them for the same reason we profile pricing: the money is part of the contract.
Cost, billing, and metering signals for API financial operations.
Submittable Finops
FINOPSSecurity Posture 3
Authentication, domain security, vulnerability disclosure, and trust-center signals — the evidence that a provider takes security seriously enough to document it. We profile it because you can't govern what you can't see.
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Agentic Access 1
An x-agentic-access contract marks which operations are safe for an agent to run on its own and which need a human in the loop. It is the difference between an API an agent can use and one it can use safely.
Recommended x-agentic-access execution contracts for AI agents.
Resources
Every other property we hold for Submittable — documentation, portals, status pages, policies, and corporate surface — grouped by the job it does, following the integrator's arc from getting started to running in production.
Documentation 2
Reference material describing how the API behaves
Agent Surfaces 1
MCP servers, agent skills, and machine-readable catalogs
Access & Security 3
Authentication, authorization, and security posture
Operate 1
Status, limits, changes, and where to get help
Commercial 3
Pricing, plans, and the legal terms of use
Company 2
The organization behind the API
← All providers · Data indexed from github.com/api-evangelist/submittable · machine-readable index on apis.io
This is an independent, third-party profile of Submittable, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.
The Kin Score and Agent Readiness rating are independently calculated assessments of a company's public API artifacts, scored against a published rubric. They are not certifications, endorsements, security assessments, or audits.
Corrections, re-scores, and removal are free — no partnership or purchase required, and you do not need to justify the request. A removed company is recorded as unrated, never scored zero for having asked. Acknowledgement within one business day; removal within two.
info@apievangelist.com
·
Read the full data-sourcing policy →
On a security or compliance team? Put security in the subject line and
you will get a person, not a form — we will tell you exactly which public URLs this profile was built from.