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Rank #7 of 7 in Banking Data APIs

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Teller

Teller, Inc. · commercial

103/yrnpm 1k/wk

Try itExperimental

See what an agent can do with Teller before you ever sign up. Pick a story: recorded sessions replay real probe-harness transcripts; sandboxed self-drive sessions are designed and gated (docs/TRY-IT.md).

$curl -si https://api.teller.io/accounts | head -2 # keyless → 400, not a 401 challengerecorded session — replayed, not live
recorded 2026-09-15 · exit 0 · captured verbatim by our probe harness, secrets redacted

Verified integrations

No integration evidence found in our corpus for this product yet — that means none was found, never that it doesn’t integrate.

By theme — the product's score on each story themeBy theme

Account linking — stories about account linking in this arenaAccount linkingevidence →

Stories about account linking in this arena

15.4/100

Agenticness — how well agents can access and operate the productAgenticnessevidence →

How well agents can access and operate the product

16.0/100

Automation depth — how much of the product can run unattendedAutomation depthevidence →

How much of the product can run unattended

0.0/100

Balance ownership — stories about balance ownership in this arenaBalance ownershipevidence →

Stories about balance ownership in this arena

55.6/100

Banking agent access — stories about banking agent access in this arenaBanking agent accessevidence →

Stories about banking agent access in this arena

28.8/100

Consent security — stories about consent security in this arenaConsent securityevidence →

Stories about consent security in this arena

0.0/100

Data freshness — stories about data freshness in this arenaData freshnessevidence →

Stories about data freshness in this arena

27.0/100

Institution coverage — stories about institution coverage in this arenaInstitution coverageevidence →

Stories about institution coverage in this arena

10.8/100

Integration dx — sandboxes, test modes, webhooks, and how fast a developer gets to a working integrationIntegration dxevidence →

Sandboxes, test modes, webhooks, and how fast a developer gets to a working integration

62.9/100

Openness — open source, data portability, and self-hosting storiesOpennessevidence →

Open source, data portability, and self-hosting stories

16.3/100

Payment initiation — stories about payment initiation in this arenaPayment initiationevidence →

Stories about payment initiation in this arena

15.0/100

Privacy posture — data-handling and privacy storiesPrivacy postureevidence →

Data-handling and privacy stories

0.0/100

Transactions enrichment — stories about transactions enrichment in this arenaTransactions enrichmentevidence →

Stories about transactions enrichment in this arena

22.3/100

Story verdicts — every judged story with its evidenceStory verdicts

?

Sorted by importance (agentic first) (high → low) · 53/53 stories · click a row’s chevron for the rationale and evidence

Drive the product through a documented public API G

Agent access

ai-native userAgenticness — how well agents can access and operate the productAgenticness3partial6/10T

Connect an agent via an official MCP server G

Agent access

ai-native userAgenticness — how well agents can access and operate the productAgenticness3noneuntestednone yet

Delegate tasks to a built-in AI assistant inside the product G

Agentic features

ai-native userAgenticness — how well agents can access and operate the productAgenticness3n/auntestednone yet

Plug MCP servers into this product so it can use their tools G

Agent access

ai-native userAgenticness — how well agents can access and operate the productAgenticness3n/auntestednone yet

Subscribe to events via webhooks G

Agent access

ai-native userAgenticness — how well agents can access and operate the productAgenticness2full7/10C

Build against official SDKs G

Agent access

ai-native userAgenticness — how well agents can access and operate the productAgenticness2partial5/10T

Run the product headlessly / in CI for automation G

Agent access

ai-native userAgenticness — how well agents can access and operate the productAgenticness2partial5/10X

Set up automations that run autonomously in the background G

Agentic features

ai-native userAgenticness — how well agents can access and operate the productAgenticness2partial4/10C

Download a machine-readable API spec (OpenAPI or equivalent) G

Api quality

ai-native userAgenticness — how well agents can access and operate the productAgenticness2none0/10

Explore an interactive API reference with runnable examples G

Api quality

ai-native userAgenticness — how well agents can access and operate the productAgenticness2none0/10

Issue scoped/least-privilege API credentials for an agent G

Agent access

ai-native userAgenticness — how well agents can access and operate the productAgenticness2none0/10

Operate the product with natural-language commands G

Agentic features

ai-native userAgenticness — how well agents can access and operate the productAgenticness2none0/10

Point an agent at llms.txt or agent-oriented docs G

Agent access

ai-native userAgenticness — how well agents can access and operate the productAgenticness2none0/10

Rely on versioned APIs with a documented deprecation policy G

Api quality

ai-native userAgenticness — how well agents can access and operate the productAgenticness2none0/10

Use an official CLI G

Agent access

ai-native userAgenticness — how well agents can access and operate the productAgenticness2none0/10

Get AI-generated insights and suggestions from my data inside the product G

Agentic features

ai-native userAgenticness — how well agents can access and operate the productAgenticness2noneuntestednone yet

Test against a sandbox environment without touching production data G

Api quality

ai-native userAgenticness — how well agents can access and operate the productAgenticness1full8/10C

Fetch a real-time balance for a connected account before initiating a payment — a documented balance endpoint intended for NSF and risk checks C

Balances

developerBalance ownership — stories about balance ownership in this arenaBalance ownership3full9/10C

A sandbox with test institutions and documented test credentials lets me exercise linking, data retrieval, and error states end-to-end before touching a real bank account C

Sandbox

developerIntegration dx — sandboxes, test modes, webhooks, and how fast a developer gets to a working integrationIntegration dx3full8/10C

Obtain verified account and routing numbers (or tokenized equivalents) from a linked account to fund ACH or bank-debit payments without micro-deposits C

Ach details

developerBalance ownership — stories about balance ownership in this arenaBalance ownership3partial7/10C

Let a user connect their bank with a drop-in hosted flow — create a session server-side, open the widget, and get back a token for the connected account — without building institution UI myself C

Hosted flows

developerAccount linking — stories about account linking in this arenaAccount linking3partial6/10C

Pull transaction history for a connected account through the API — paginated, with documented history depth and a sync pattern for fetching only what changed C

Transactions

developerTransactions enrichment — stories about transactions enrichment in this arenaTransactions enrichment3partial6/10X

An agent can operate the platform — create link sessions, retrieve balances and transactions, and manage connections through the API or an MCP surface with scoped credentials C

Agent operations

ai-native userBanking agent access — stories about banking agent access in this arenaBanking agent access3partial4/10T

Export all of my data in open formats and leave G

ai-native userOpenness — open source, data portability, and self-hosting storiesOpenness3partial3/10X

The platform documents how many institutions it reaches and where — published coverage numbers and geographies I can check against where my users actually bank C

Coverage

founderInstitution coverage — stories about institution coverage in this arenaInstitution coverage3partial3/10X

Define rules that trigger actions automatically on events G

ai-native userAutomation depth — how much of the product can run unattendedAutomation depth3none0/10

Prevent my data from being used to train AI models G

ai-native userPrivacy posture — data-handling and privacy storiesPrivacy posture3n/auntestednone yet

Self-host the core product G

ai-native userOpenness — open source, data portability, and self-hosting storiesOpenness3n/auntestednone yet

Retrieve account-holder details — names, addresses, contact data on file at the bank — to match the account owner against my customer C

Ownership

ops leadBalance ownership — stories about balance ownership in this arenaBalance ownership2full8/10C

One link session can power multiple data products — auth, balances, transactions, identity — without forcing the user through separate connection flows per product C

Multi product

developerIntegration dx — sandboxes, test modes, webhooks, and how fast a developer gets to a working integrationIntegration dx2full7/10C

The data comes back agent-consumable — clean structured JSON, documented schemas, and enrichment an automated financial workflow can reason over without heuristic parsing C

Agent data

ai-native userBanking agent access — stories about banking agent access in this arenaBanking agent access2partial6/10T

Data changes arrive as signed webhooks — new transactions, balance updates, connection state changes — so my system stays current without polling C

Webhooks

developerData freshness — stories about data freshness in this arenaData freshness2partial5/10C

Do everything through the API that I can do in the UI G

ai-native userOpenness — open source, data portability, and self-hosting storiesOpenness2partial5/10C

Go from signup to my first linked sandbox account fast — self-serve API keys, a runnable quickstart, and client libraries in my language C

Quickstart

developerIntegration dx — sandboxes, test modes, webhooks, and how fast a developer gets to a working integrationIntegration dx2partial5/10C

Initiate a bank payment from a connected account — a documented pay-by-bank or payment-initiation product with its live geographies stated honestly C

Pay by bank

developerPayment initiation — stories about payment initiation in this arenaPayment initiation2partial5/10C

Raw bank transactions come back enriched — cleaned merchant names, categories, and logos — documented as a capability of the platform, not left as an exercise for me C

Enrichment

developerTransactions enrichment — stories about transactions enrichment in this arenaTransactions enrichment2partial4/10C

Trigger an on-demand refresh of a connected account's data through the API when my use case needs now-fresh data, with the refresh semantics documented C

Refresh

developerData freshness — stories about data freshness in this arenaData freshness2partial4/10C

Broken connections are repairable — expired or revoked links surface as documented statuses, and users can re-authenticate in an update flow without starting over C

Repair

ops leadAccount linking — stories about account linking in this arenaAccount linking2none0/10

Connections to major institutions use bank-hosted OAuth rather than screen-scraped credentials — the platform documents its OAuth coverage and how legacy credential flows are being retired C

Oauth

developerAccount linking — stories about account linking in this arenaAccount linking2none0/10

End users can see and revoke what they've shared — a documented consent surface or portal where a user manages which apps hold access to their bank data C

Consent

ops leadConsent security — stories about consent security in this arenaConsent security2none0/10

I request only the data scopes I need — product-scoped consents and documented data-minimization controls, not an all-or-nothing grant C

Scopes

developerConsent security — stories about consent security in this arenaConsent security2none0/10

Linked accounts plug into my payment processor — documented integrations or token exchange that hand verified account credentials to third-party processors and platforms C

Processor tokens

developerBalance ownership — stories about balance ownership in this arenaBalance ownership2none0/10

Perform bulk operations across many items at once G

ai-native userAutomation depth — how much of the product can run unattendedAutomation depth2none0/10

Read the product's source under an open license G

ai-native userOpenness — open source, data portability, and self-hosting storiesOpenness2none0/10

Recurring bank payments are supported — variable recurring payments, standing consents, or documented recurring debit flows built on the connection C

Recurring

developerPayment initiation — stories about payment initiation in this arenaPayment initiation2none0/10

Choose where my data is stored (region/residency) G

ai-native userPrivacy posture — data-handling and privacy storiesPrivacy posture2noneuntestednone yet

Control data retention and deletion G

ai-native userPrivacy posture — data-handling and privacy storiesPrivacy posture2noneuntestednone yet

Opt out of telemetry and usage tracking G

ai-native userPrivacy posture — data-handling and privacy storiesPrivacy posture2n/auntestednone yet

Per-institution health is visible — documented institution statuses, outage or degradation signals, and error codes that distinguish a bank problem from my problem C

Status

ops leadInstitution coverage — stories about institution coverage in this arenaInstitution coverage2noneuntestednone yet

Schedule recurring jobs or workflows G

ai-native userAutomation depth — how much of the product can run unattendedAutomation depth2noneuntestednone yet

Sever and clean up — a documented way to delete a connection or user and have the platform stop collecting and purge held data C

Deletion

ops leadConsent security — stories about consent security in this arenaConsent security2noneuntestednone yet

The platform derives income and cash-flow signals from connected accounts — recurring streams, payroll detection, or documented income verification products built on the same data C

Cashflow

finance leadTransactions enrichment — stories about transactions enrichment in this arenaTransactions enrichment2noneuntestednone yet

Version, review, and roll back my automations G

ai-native userAutomation depth — how much of the product can run unattendedAutomation depth1n/auntestednone yet

Opportunities — the stories that would move this product's scores, from its own judged verdictsOpportunitiestop 8 of 41 stories with headroom

What would move Teller’s scores — derived from its own judged verdicts, biggest headroom first. Each line quotes what the judge found missing; shipping it (or evidencing it publicly) is the fix.

  1. Agenticness — how well agents can access and operate the productConnect an agent via an official MCP server

    nonemoves agent-readyimpact 45

    The axis applies to this product kind (peer products hold positive or none verdicts on this story), so lack of evidence for an applicable capability is "none", never "na".

  2. Automation depth — how much of the product can run unattendedDefine rules that trigger actions automatically on events

    nonemoves PA Scoreimpact 30

    Missing: any rule/condition builder, action templates, or automation configuration UI/API beyond raw webhook event delivery.

  3. Agenticness — how well agents can access and operate the productPoint an agent at llms.txt or agent-oriented docs

    nonemoves agent-readyimpact 30

    Probes directly show no llms.txt, no docs.md, and no OpenAPI file at expected locations (all 404), and no evidence of any agent-oriented documentation format elsewhere in the pack.

  4. Agenticness — how well agents can access and operate the productGet AI-generated insights and suggestions from my data inside the product

    nonemoves Built-in AIimpact 30

    The axis applies to this product kind (peer products hold positive or none verdicts on this story), so lack of evidence for an applicable capability is "none", never "na".

  5. Agenticness — how well agents can access and operate the productOperate the product with natural-language commands

    nonemoves Built-in AIimpact 30

    Teller is a banking-data API/SDK product with no evidence of a natural-language command interface, chatbot, or AI-native interaction layer; probes for llms.txt/docs.md/openapi also failed, and no docs mention NL commands or agent interfaces.

  6. Agenticness — how well agents can access and operate the productUse an official CLI

    nonemoves agent-readyimpact 30

    Missing: any mention of a CLI tool, package, or command-line workflow for AI-native/agentic use.

  7. Agenticness — how well agents can access and operate the productIssue scoped/least-privilege API credentials for an agent

    nonemoves agent-readyimpact 30

    Missing: any documentation of scoped/limited-permission credential issuance, agent-specific key management, or fine-grained access control beyond whole-enrollment consent.

  8. Agenticness — how well agents can access and operate the productExplore an interactive API reference with runnable examples

    nonemoves API qualityimpact 30

    Teller has extensive markdown-based API documentation but no evidence of an interactive reference with runnable examples (e.g., Swagger/OpenAPI explorer).

Showing the top 8 of 41 — every none/partial verdict in the story verdicts table is headroom.

Think a verdict is wrong? Every verdicts-table row has a Flag link — see the methodology.

Coverage map — which docs area, API section, or community source covers which judged storiesCoverage map6 surfaces · 23 covered stories

Where the cited evidence behind each covered verdict came from — the same citations the verdicts table shows, no extra judging.

docs22 stories

Probe proofs — replayable recordings from the probe harnessProbe proofs

Replayable recordings from our probe harness — see the Prove-It protocol to submit one.

$curl -si https://api.teller.io/accounts | head -2 # keyless → 400, not a 401 challengereproduced
$ curl -si https://api.teller.io/accounts | head -2  # [redacted]less → 400, not a 401 challenge
HTTP/2 400

cache-control: max-age=0, private, must-revalidate
$curl -sL https://teller.io/docs/llms.txt | head -3reproduced
$ curl -sL https://teller.io/docs/llms.txt | head -3
# Teller Developer Documentation

> API documentation for Teller, the platform that provides instant access to bank account data and enables payments directly from bank accounts.

Claims vs evidence — vendor claims reconciled against independent verdictsClaims vs evidence

3 of 15 testable claims verified · 0 contradictedintegrity 20/100

18 distinct capability claims found in Teller’s own claimed-docs/GitHub materials, reconciled against our judge’s independent verdicts.

3

Verified

12

Unverified

0

Contradicted

8

Undersold

Verified (4)
Unverified (12)
Undersold (8)
Claims outside our story set (2)

Real capability claims found in Teller’s own materials, but no story in this arena’s taxonomy covers them yet — that’s feedback on the taxonomy, not a mark against the product.

  • Sidecar product lets you switch to Teller with a one-line config change

    source ↗
  • API authentication uses mTLS with client certificates issued by Teller

    source ↗
Suggest a story for these →

Business model

free-tierusage-based

Published prices on the homepage: Verify $1.50/account, Balance 10¢/call, Transactions 30¢/enrollment/month, Identity $1.75/call; free developer tier with 100 live connections; enterprise is custom.

pricing ↗

Score trend

How this product’s scores have moved as evidence and verdicts are re-derived — a point per change, not per day.

PA Scoretracked since Sep 15 '26 — no movement recorded yet
Agent-readytracked since Sep 15 '26 — no movement recorded yet

Try Experimental

Run it in the microterminal →

Recorded agent sessions — and a live MCP handshake where the vendor ships one.

Flag

⚑ Flag a verdict

Think a verdict is wrong? Opens a prefilled GitHub issue — or use the ⚑ next to any verdict above.

Badge

Embed this product's score badge →

Hotlinked SVG — always shows the live current score.

For agents

Data